| Sun Ethernet Fabric Operating System CLI Base Reference Manual
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STP |
4.1 STP
STP is a link management protocol that provides path redundancy while preventing undesirable loops in the network that are created by multiple active paths between devices. To establish path redundancy, STP creates a tree that spans all of the switches in an extended network, forcing redundant paths into a standby or blocked state.
For an Ethernet network to function properly, only one active path must exist between two stations. Multiple active paths between stations in a bridged network can cause loops in which Ethernet frames can endlessly circulate. STP can logically break such loops and prevent looping traffic from clogging the network. The dynamic control of the topology provides continued network operation in the presence of redundant or unintended looping paths.
4.2 STP Commands
The following commands enable you to configure STP:
4.3 PVRST+
PVRST+ is a link management protocol that provides path redundancy while preventing undesirable loops in the network that are created by multiple active paths between stations working on same VLAN. To establish path redundancy, STP creates a tree for each VLAN that spans on the switches working on that VLAN, forcing redundant paths into a standby, or blocked state.
For an Ethernet network to function properly, only one active path must exist between two stations. Multiple active paths between stations in a bridged network can cause loops in which Ethernet frames can endlessly circulate. STP can logically break such loops and prevent looping traffic from clogging the network. The dynamic control of the topology provides continued network operation in the presence of redundant or unintended looping paths.
| Note - For each VLAN, a spanning-tree instance is created. The number of spanning-tree instances supported in PVRST+ will depend on the number of instances supported by the hardware. There can be more VLANs operating in the switch, but PVRST+ will be operating only on supported instances.
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4.4 PVRST+ Commands
The list of commands used for PVRST+ is as follows:
4.5 STP and PVRST+ Commands4.5.1 spanning-tree mode mst|rst
Sets the spanning-tree operating mode.
spanning-tree mode {mst | rst}
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Syntax Description
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mst - MSTP configuration
rst - RSTP configuration
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Mode
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Global Configuration
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Defaults
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mst
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Example
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SEFOS(config)# spanning-tree mode rst
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Notes
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- When SEFOS boots up, spanning-tree is enabled by default with MSTP operating in the switch.
- This command only starts and enables the spanning-tree mode. However, port-roles and states are computed only after enabling the spanning-tree.
- If the user-input for the spanning-tree mode is different from the current mode of operation, then SEFOS shuts down the operational spanning-tree and starts the spanning-tree per user-input.
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4.5.2 spanning-tree
Enables the spanning-tree operation. The no form of the command disables the spanning-tree operation.
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Mode
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Global Configuration
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Defaults
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Spanning-tree enabled is MSTP
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Example
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SEFOS(config)# spanning-tree
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4.5.3 spanning-tree compatibility
Sets the compatibility version for the spanning-tree protocol. The no form of the command sets the compatibility version for spanning-tree protocol to its default value.
spanning-tree compatibility {stp | rst | mst}
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no spanning-tree compatibility
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Syntax Description
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stp - STP configuration
rst - RSTP configuration
mst - MSTP configuration
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Mode
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Global Configuration
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Defaults
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If spanning-tree protocol enabled is MST, then MSTP compatible.
If spanning-tree protocol enabled is RST, then RSTP compatible.
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Example
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SEFOS(config)# spanning-tree compatibility stp
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Notes
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The option mst is available only when MSTP is the operational mode of the spanning-tree.
When the spanning-tree mode is mst, the fields in the dot1d Bridge-MIB are not updated, even when the compatibility mode has been set to rst or stp. If you want to use these MIB variables to manage or observe the switch, you must use spanning-tree mode rst.
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4.5.4 spanning-tree timers
Sets the spanning-tree timers in seconds. The no form of the command sets the spanning-tree timers to the default values.
spanning-tree {forward-time 4-30 | hello-time 1-2 | max-age 6-40}
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no spanning-tree { forward-time | hello-time | max-age }
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Syntax Description
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forward-time - Controls how fast a port changes its spanning-tree state from blocking state to forwarding state (in seconds).
hello-time- Determines how often the switch broadcasts its hello message to other switches when it is the root of the spanning-tree (in seconds).
max-age - The maximum age allowed for the STP information learnt from the network on any port before it is discarded (in seconds).
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Mode
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Global Configuration
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Defaults
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forward-time - 15
hello-time- 2
max-age - 20
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Example
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SEFOS(config)# spanning-tree max-age 6
SEFOS(config)# spanning-tree hello-time 1
SEFOS(config)# spanning-tree forward-time 4
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Notes
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The following relation must be observed while configuring the timers:
- 2 * (Forward-time - 1) >= Max-age
- Max-Age >= 2 * (Hello-time +1)
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4.5.5 spanning-tree mst forward-time
Configures the forward timer of the spanning-tree. The no form of the command sets the forward timer to the default value. The forward timer controls the speed at which a port changes its spanning-tree state from blocking state to forwarding state. The timer value ranges between 4 and 30 seconds.
This command operates similar to that of the command spanning-tree timers, but configures only the forward timer.
spanning-tree mst forward-time 4-30
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no spanning-tree mst forward-time
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Mode
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Global Configuration
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Defaults
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forward-time - 15
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Example
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SEFOS(config)# spanning-tree mst forward-time 4
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Notes
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The following relation must be observed while configuring the timers:
2 * (Forward-time - 1) >= Max-age
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4.5.6 spanning-tree mst max-age
Configures the max-age timer of the spanning-tree. The no form of the command sets the max-age timer to the default value. The max-age timer denotes the time (in seconds) after which the spanning-tree protocol information learnt from the network on any port will be discarded. The timer value ranges between 6 and 40 seconds.
This command operates similar to the command spanning-tree timers, but configures only the max-age timer.
spanning-tree mst max-age 6-40
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no spanning-tree mst max-age
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Mode
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Global Configuration
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Defaults
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max-age - 20
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Example
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SEFOS(config)# spanning-tree mst max-age 7
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Notes
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The following relation must be observed while configuring the timers:
- 2 * (Forward-time - 1) >= Max-age
- Max-Age >= 2 * (Hello-time +1)
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4.5.7 spanning-tree transmit hold-count
Sets the transmit hold-count value. The no form of the command sets the transmit hold-count to default value. The transmit hold-count value is a counter used to limit the maximum transmission rate of the switch.
spanning-tree transmit hold-count 1-10
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no spanning-tree transmit hold-count
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Mode
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Global Configuration
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Defaults
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3
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Example
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SEFOS(config)# spanning-tree transmit hold-count 5
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4.5.8 spanning-tree mst max-hops
Sets the maximum number of hops permitted in the MST. The no form of the command sets the maximum number of hops permitted in the MST to the default value.
spanning-tree mst max-hops 6-40
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no spanning-tree mst max-hops
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Mode
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Global Configuration
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Defaults
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20
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Example
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SEFOS(config)# spanning-tree mst max-hops 10
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Notes
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The root switch of the instance always sends a BPDU with a cost of 0 and the hop count set to the maximum value.
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show spanning-tree mst configuration - Displays multiple spanning-tree instance configuration
4.5.9 spanning-tree priority
Sets the bridge priority for the spanning-tree only in steps of 4096. The no form of the command sets the bridge priority to the default value.
spanning-tree [mst instance-id_1-64] [priority 0-61440]
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no spanning-tree [mst instance-id_1-64] priority
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Mode
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Global Configuration
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Defaults
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32768
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Example
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SEFOS(config)# spanning-tree priority 4096
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Notes
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spanning-tree priority 0-61440 configures the priority in RSTP if RSTP is running, or configures the CIST priority if MSTP is running. spanning-tree mst instance-id_1-64 priority 0-61440 configures the priority in MSTI and is supported only if MSTP is running.
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4.5.10 spanning-tree mst root
spanning-tree mst instance-id_1-64 root {primary | secondary}
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no spanning-tree mst instance-id_1-64 root
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Syntax Description
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instance-id_1-64 - Instance identification number. This value ranges between 1 and 64.
primary - Sets high enough priority (low value) for the switch so that the switch can be made as the bridge root of the spanning-tree instance. The priority value will be set as 24576.
secondary - Sets the switch as a secondary root if the primary root fails. The priority value will be set as 28672.
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Mode
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Global Configuration
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Example
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SEFOS(config)# spanning-tree mst instance-id 1 root secondary
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4.5.11 spanning-tree mst configuration
Helps enter MST configuration submode.
spanning-tree mst configuration
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Mode
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Global Configuration
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Example
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SEFOS(config)# spanning-tree mst configuration
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Notes
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In MST mode, the switch supports up to 64 instances. This MST configuration submode is used to make instance-specific and MST region configurations only. The switch supports up to 64 instances.
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show spanning-tree mst configuration - Displays multiple spanning-tree instance configurations
4.5.12 name
Sets the configuration name for the MST region. The no form of the command deletes the configuration name.
name optional-max-length-string
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Mode
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MSTP Configuration
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Defaults
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The default configuration name is 00: 00: 00: 00: 00: 00
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Example
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SEFOS(config-mst)# name regionone
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Notes
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The name string is case sensitive.
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show spanning-tree mst configuration - Displays multiple spanning-tree instance configuration
4.5.13 revision
Sets the configuration revision number for the MST region. The no form of the command deletes the configuration revision number.
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Mode
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MSTP Configuration
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Defaults
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0
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Example
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SEFOS(config-mst)# revision 100
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show spanning-tree mst configuration - Displays multiple spanning-tree instance configurations
4.5.14 instance
Maps VLANs to an MST instance. The no form of the command deletes the instance and unmaps specific VLANs from the MST instance.
instance {instance-id_1-64 | 4094} [vlan vlan-range]
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no instance instance-id_1-64 [vlan vlan-range]
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Syntax Description
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vlan - The VLAN range associated with a spanning-tree instance.
MST instance 4094 is used only in Provider backbone bridging (BPP-TE) and is not supported in this release.
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Mode
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MSTP Configuration
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Defaults
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VLANs mapped for instance 0: 11-1024, 1025-2048, 2049-3072,3073-4094.
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Example
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SEFOS(config-mst)# instance 2 vlan 2
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Notes
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A single VLAN identified by a VLAN ID number is specified by a range of VLANs separated by a hyphen, or a series of VLANs separated by a comma.
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show spanning-tree mst configuration - Displays multiple spanning-tree instance configuration
4.5.15 spanning-tree auto-edge
Enables automatic detection of a bridge attached to an interface. The no form of the command disables automatic detection of a bridge attached to an interface.
no spanning-tree auto-edge
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Mode
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Interface Configuration
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Example
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SEFOS(config-if)# spanning-tree auto-edge
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show spanning-tree bridge - Displays the spanning-tree configuration of the bridge
4.5.16 spanning-tree
Sets the spanning-tree properties of an interface. The no form of the command sets the spanning-tree properties of an interface to the default value.
spanning-tree {cost 0-200000000 | disable | link-type {point-to-point | shared} | portfast | port-priority 0-240}
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no spanning-tree {cost | disable | link-type | portfast | port-priority}
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Syntax Description
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cost - Path cost value associated with the port.
disable - Disables the spanning-tree on the port.
link-type - The link can be a point-to-point link or can be a shared LAN segment on which another bridge is present. The no form of the command sets the link type as auto.
portfast - Specifies that port has only hosts connected and hence can transition to forwarding rapidly.
port-priority - Port priority value.
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Mode
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Interface Configuration
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Defaults
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cost - 200000
port-priority - 128.1
portfast - Not in portfast.
link-type - Shared.
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Example
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SEFOS(config-if)# spanning-tree cost 2200
SEFOS(config-if)# spanning-tree link-type point-to-point
SEFOS(config-if)# spanning-tree portfast
SEFOS(config-if)# spanning-tree port-priority 25
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Notes
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In MSTP mode, this configuration applies to the CIST context.
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show spanning-tree interface - Displays the spanning-tree port specific configuration.
4.5.17 spanning-tree restricted-role
Enables the root-guard or restricted role feature on the port (prevents a specific port from becoming the root port). The no form of the command disables the root-guard or restricted role feature on the port.
spanning-tree restricted-role
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no spanning-tree restricted-role
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Mode
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Interface Configuration
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Defaults
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Disabled.
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Example
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SEFOS(config-if)# spanning-tree restricted-role
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4.5.18 spanning-tree restricted-tcn
Enables the topology change guard or restricted TCN feature on the port (prevents the topology change caused by that port). The no form of the command disables the topology change guard or restricted TCN feature on the port.
spanning-tree restricted-tcn
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no spanning-tree restricted-tcn
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Mode
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Interface Configuration
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Defaults
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Disabled
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Example
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SEFOS(config-if)# spanning-tree restricted-tcn
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4.5.19 spanning-tree mst - Properties of an interface for MSTP
Sets the spanning-tree properties of an interface for MSTP. The no form of the command sets the spanning-tree properties of an interface to the default value. The port-priority must be in increments of 16 with a maximum value of 240.
spanning-tree mst instance-id_1-64 {cost 1-200000000 | port-priority 0-240 | disable}
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no spanning-tree mst instance-id_1-64 {cost | port-priority | disable}
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Syntax Description
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cost - Cost value associated with the port
port-priority - Port priority value
disable - Disables the spanning-tree on the port
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Mode
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Interface Configuration
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Defaults
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cost - 200000
port-priority - 128
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Example
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SEFOS(config-if)# spanning-tree mst 2 cost 4000
SEFOS(config-if)# spanning-tree mst 1 port-priority 32
SEFOS(config-if)# spanning-tree mst 2 disable
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Notes
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- The MST instance must exist for this command.
- If all interfaces have the same priority value, the MST instance places the interface with the lowest interface number in the forwarding state and blocks other interfaces.
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show spanning-tree mst - CIST or Specified MST Instance - Displays the spanning-tree properties of an interface for an MSTP instance
4.5.20 spanning-tree mst hello-time
This command configures the spanning tree hello time.
The no form of this command resets the hello time to its default value.
The hello time represents the time interval (in seconds) between two successive
configuration BPDUs generated by the switch on the port. This value is either 1 or 2 seconds. This value is applied to all active MSTIs.
spanning-tree mst hello-time seconds_1-2
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no spanning-tree mst hello-time
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Mode
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Global Configuration, Interface Configuration
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Defaults
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2 seconds.
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Example
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SEFOS(config-if)# spanning-tree mst hello-time 1
SEFOS(config)# spanning-tree mst hello-time 1
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Notes
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This command can be executed successfully, only if the spanning tree functionality is not shutdown in the switch. The type of spanning tree mode should be set as mst.
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- shutdown spanning-tree - Shuts down spanning tree functionality in the switch.
- spanning-tree mode - Sets the type of spanning tree to be executed, enables spanning tree operation and starts spanning tree functionality in the switch.
- show spanning-tree - Summary, Blockedports, Pathcost, redundancy - Displays spanning tree related information available in the switch for the current STP enabled in the switch.
- show spanning-tree detail - Displays detailed spanning tree related information of the switch and all ports enabled in the switch.
- show spanning-tree interface - Displays the port related spanning tree information for the specified interface.
- show spanning-tree root - Displays the spanning tree root information.
- show spanning-tree bridge - Displays the spanning tree bridge information.
- show spanning-tree mst - Port Specific Configuration - Displays multiple spanning tree port speci fic information for the specified port.
4.5.21 clear spanning-tree counters
Resets all bridge and port level spanning tree statistics counters.
For RSTP, the information contains the number of:
- Transitions to forwarding state
- RSTP BPDU count received / transmitted
- Config BPDU count received / transmitted
- TCN BPDU count received / transmitted
- Invalid BPDU count transmitted
- Port protocol migration count
For MSTP, the information contains the number of:
- Port forward transitions
- Port received BPDUs
- Port transmitted BPDUs
- Port invalid BPDUs received
- Port protocol migration count
- BPDUs sent / received for each MSTI
For PVRST, the information contains the number of:
- Transitions to forwarding state
- PVRST BPDU count received / transmitted
- Config BPDU count received / transmitted
- TCN BPDU count received / transmitted
- Port protocol migration count
clear spanning-tree [mst instance-id] counters [interface interface-type interface-id]
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Syntax Description
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mst instance-id - Clears the statistical counters specific to the MSTP instance already created in the switch. This value ranges between 1 and 64. The special value 4094 can be used only in the switch that supports Provider backbone bridging (BPP-TE) and is not supported in this release. This option is applicable, only if the spanning tree mode is set as mst.
interface interface-type interface-id - Clears all port-level spanning-tree statistics counters for the given port.
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Mode
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Global Configuration
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Example
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SEFOS(config)# clear spanning-tree mst 1 counters
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Notes
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The statistics information can be deleted only if the spanning tree functionality is not shutdown in the switch. The type of spanning tree mode should be set if the functionality is already shutdown.
Valid interfaces include physical ports, VLANs, and port channels. Port protocol migration count gets incremented consistently when there is a protocol migration.
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4.5.22 spanning-tree pathcost dynamic [lag-speed]
Enables dynamic path cost calculation feature in the switch. The no form of the command disables dynamic path cost calculation. The dynamic pathcost calculation feature is disabled, even if the spanning tree mode is changed.
spanning-tree pathcost dynamic [lag-speed]
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no spanning-tree pathcost dynamic [lag-speed]
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Syntax Description
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lag-speed - Calculates the path cost for change in speed of the port. This feature is used for LA ports whose speed changes due to addition or deletion of ports from the port channel.
The manually assigned path cost is used even if the lag speed feature is enabled in the switch, if the path cost is assigned manually.
The lag speed feature can be enabled only after enabling the dynamic pathcost calculation feature.
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Mode
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Global Configuration
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Defaults
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Disabled
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Example
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SEFOS(config)# spanning-tree pathcost dynamic
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Notes
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- The dynamic pathcost calculation feature can be configured in the switch, only if the spanning tree functionality is not shutdown in the switch. The type of spanning tree mode should be set, if the functionality is already shutdown.
- This feature is applied only for the ports that are not shutdown during the execution of STP.
- On execution of this command, the path cost of all the ports are calculated dynamically based on the speed of the interface.
- This feature is applied only for the ports that are not shutdown during the execution of STP.
- If the cost has already been configured for a CIST or an RSTP interface, this command has no effect on those interfaces.
- If the cost has been configured previously for an MST instance on a particular interface, this command has no effect on that instance in the specified interface. Whereas, the path cost of all the other instances on the same interface are calculated dynamically.
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4.5.23 spanning-tree loop-guard
Enables the loop guard feature in a port. This feature prevents the alternative or root ports from becoming designated ports due to failure in a unidirectional link. This feature is useful when the neighbor bridge is faulty, that is, the bridge cannot send BPDUs but continues to send data traffic.
The no form of this command disables the loop guard feature in the port. The loop guard feature is disabled, even if the spanning tree mode is changed.
no spanning-tree loop-guard
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Mode
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Interface Configuration
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Default
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Disabled in all ports.
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Example
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SEFOS(config-if)# spanning-tree loop-guard
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Notes
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The loop guard feature can be configured, only if the spanning tree functionality is not shutdown in the switch. The type of spanning tree mode should be set, if the functionality is already shutdown.
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- shutdown spanning-tree - Shuts down spanning tree functionality in the switch.
- spanning-tree mode - Sets the type of spanning tree to be executed, enables spanning tree operation and starts spanning tree functionality in the switch.
- show spanning-tree detail - Displays detailed spanning tree related information of the switch and all ports enabled in the switch.
- show spanning-tree active detail - Displays detailed spanning tree related information of the switch and all ports enabled in the switch.
- show spanning-tree interface - Displays the port related spanning tree information for the specified interface.
4.5.24 clear spanning-tree detected protocols
Restarts the protocol migration process on all the interfaces and forces renegotiation with the neighboring switches.
clear spanning-tree detected protocols [{interface interface-type interface-id | switch context-name}]
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Syntax Description
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interface interface-type interface-id - Restarts the protocol migration process on the specified interface. Valid interfaces include physical ports, VLANs, and port channels.
switch context-name - Context or switch name. This parameter is specific to multiple instance. The keyword switch is not supported.
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Mode
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Privileged EXEC
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Example
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SEFOS# clear spanning-tree detected protocols interface extreme-ethernet 0/1
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Notes
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Port protocol migration count gets incremented consistently when there is a protocol migration.
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4.5.25 shutdown spanning-tree
Shuts down spanning-tree operation.
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Mode
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Global Configuration
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Defaults
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MSTP is started and enabled.
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Example
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SEFOS(config)# shutdown spanning-tree
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Notes
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MSTP and RSTP are mutually exclusive and thus the MSTP module must be shutdown to start the RSTP module.
The bridge module must be enabled for RSTP to be started.
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4.5.26 debug spanning-tree
Provides spanning-tree debugging support. The no form of the command disables debugging.
debug spanning-tree {global | {all | errors | init-shut | management | memory | bpdu | events | timer | state-machine {port-info | port-receive | port-role-selection | role-transition | state-transition | protocol-migration | topology-change | port-transmit | bridge-detection | pseudoInfo } | redundancy | sem-variables} switch context-name}
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no debug spanning-tree {global | {all | errors | init-shut | management | memory | bpdu |events | timer | state-machine {port-info | port-receive | port-role-selection | role-transition | state-transition | protocol-migration | topology-change | port-transmit | bridge-detection | pseudoInfo } redundancy | sem-variables} switch context-name}
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Syntax Description
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global - Global debug messages (this parameter is specific to multiple instance).
all - All RSTP or MSTP debug messages.
errors - Error code debug messages.
init-shut - Init and Shutdown debug messages.
management - Management messages.
memory - Memory related messages.
bpdu - BPDU related messages.
timer - Timer module messages.
events - Events related messages.
state machine - State-machine related debug messages.
port-info - Port information messages.
port-recieve - Port received messages.
port-role-selection - Port role selection messages.
role-transition - Role transition messages.
state-transition - State transition messages.
protocol-migration - Protocol migration messages.
topology-change - Topology change messages.
port-transmit - Port transmission messages.
bridge-detection - Bridge detection messages.
pseudoInfo - Pseudo information debug statements.
redundancy - Redundancy related messages. The keyword redundancy is not supported.
sem-variables - State-machine variables debug messages.
switch context-name - Context or switch name. This parameter is specific to multiple instance. The keyword switch is not supported.
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Mode
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Privileged EXEC
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Defaults
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Debugging is disabled.
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Example
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SEFOS# debug spanning-tree all
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show spanning-tree detail - Displays detailed spanning-tree information for STP/RSTP/MSTP configuration
4.5.27 show spanning-tree
Displays spanning-tree information, such as summary, blockedports, and path cost.
show spanning-tree [{summary | blockedports | pathcost method}] [switch context-name]
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Syntax Description
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summary - Summary of port states.
blockedports - Blocked ports in the system.
pathcost method - Path cost method configured for a bridge.
switch context-name - Context or switch name. This parameter is specific to multiple instance. The keyword switch is not supported.
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Mode
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Privileged EXEC
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Defaults
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When SEFOS boots up, spanning-tree is enabled by default with MSTP operating in the switch.
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Example
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Single Instance:
SEFOS# show spanning-tree
Root Id Priority 32768
Address 00:02:02:03:04:01
Cost 1900
Port 73 [po1]
Max age 20 Sec, forward delay 15 Sec
Hello Time 2 Sec
MST00
Spanning tree Protocol has been enabled
MST00 is executing the mstp compatible Multiple Spanning Tree Protocol
Bridge Id Priority 32768
Address 00:01:02:03:04:01
Max age is 20 sec, forward delay is 15 sec
Hello Time is 2 sec
Dynamic Path Cost is Disabled
Dynamic Path Cost Lag-Speed Change is Enabled
Name Role State Cost Prio Type
---- ---- ----- ---- ---- ------
Ex0/46 Alternate Discarding 2000 128 P2P
po1 Root Forwarding 1900 128 P2P
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SEFOS# show spanning-tree blockedports
Blocked Interfaces List:
The Number of Blocked Ports in the system is :1
SEFOS# show spanning-tree pathcost method
spanning-tree port pathcost method is Long
SEFOS# show spanning-tree summary
spanning-tree enabled protocol is RSTP
spanning-tree port pathcost method is Long
RSTP Port Roles and States
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Port-Index Port-Role Port-State Port-Status
---------- --------- ---------- -----------
1 Designated Forwarding Enabled
2 Designated Forwarding Enabled
3 Designated Forwarding Enabled
4 Designated Forwarding Enabled
5 Designated Forwarding Enabled
6 Designated Forwarding Enabled
7 Designated Forwarding Enabled
8 Designated Forwarding Enabled
Multiple Instance:
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SEFOS# show spanning-tree
Root Id Priority 32768
Address 00:02:02:03:04:01
Cost 1900
Port 73 [po1]
Max age 20 Sec, forward delay 15 Sec
Hello Time 2 Sec
MST00
Spanning tree Protocol has been enabled
MST00 is executing the mstp compatible Multiple Spanning Tree Protocol
Bridge Id Priority 32768
Address 00:01:02:03:04:01
Max age is 20 sec, forward delay is 15 sec
Hello Time is 2 sec
Dynamic Path Cost is Disabled
Dynamic Path Cost Lag-Speed Change is Enabled
Name Role State Cost Prio Type
---- ---- ----- ---- ---- ------
Ex0/46 Alternate Discarding 2000 128 P2P
po1 Root Forwarding 1900 128 P2P
|
|
|
SEFOS# show spanning-tree summary
Switch - default
|
|
|
spanning-tree port pathcost method is Long
spanning-tree enabled protocol is MSTP
MST00 Port Roles and States
Port-Index Port-Role Port-State Port-Status
---------- --------- ---------- -----------
49 Disabled Forwarding Disabled
Switch - cust1
spanning-tree port pathcost method is Long
|
|
|
spanning-tree enabled protocol is MSTP
MST00 Port Roles and States
Port-Index Port-Role Port-State Port-Status
---------- --------- ---------- -----------
1 Designated Forwarding Enabled
2 Root Forwarding Enabled
3 Designated Forwarding Enabled
4 Disabled Discarding Enabled
5 Disabled Discarding Enabled
6 Disabled Discarding Enabled
|
|
|
Switch - cust2
spanning-tree port pathcost method is Long
spanning-tree enabled protocol is MSTP
MST00 Port Roles and States
Port-Index Port-Role Port-State Port-Status
---------- --------- ---------- -----------
7 Designated Forwarding Enabled
8 Root Forwarding Enabled
9 Alternate Discarding Enabled
10 Disabled Discarding Enabled
11 Disabled Discarding Enabled
12 Disabled Discarding Enabled
|
|
Notes
|
This command is the same for both RSTP and MSTP.
|
4.5.28 show spanning-tree redundancy
Displays spanning-tree information.
show spanning-tree [{summary | blockedports | pathcost method | redundancy}] [switch context-name]
|
|
Syntax Description
|
summary - Summary of port states.
blockedports - Blocked ports in the system.
pathcost method - Path cost method configured for a bridge.
switch context-name - Context or switch name. This parameter is specific to multiple instance.
|
|
Mode
|
Privileged EXEC
|
|
Defaults
|
When SEFOS boots up, spanning-tree is enabled by default with MSTP operating in the switch.
|
|
Example
|
SEFOS# show spanning-tree redundancy
Port Role/State for Instance 0 Port 1
======================
Port Role 3 Port State 5
Port Role/State for Instance 0 Port 2
======================
Port Role 1 Port State 2
|
|
|
Dumping Data On Port 1
------------------------
RootId 0:00:11:22:33:44:55
Designated BrId 0:00:11:22:33:44:55
Root path Cost 0
Length 0
Protocol Id 0
Port Id 8001
Message Age 0
|
|
|
Max Age 14
Hello Time 2
Fwd Delay Time f
Dest Addr 00:00:00:00:00:00
Src Addr 00:00:00:00:00:00
Version Length 0
Version 2
BPDU Type 2
Flags e
|
|
|
Dumping Data On Port 2
------------------------
RootId 0:00:11:22:33:44:55
Designated BrId 0:00:11:22:33:44:55
Root path Cost 0
Length 0
Protocol Id 0
Port Id 8002
Message Age 0
|
|
|
Max Age 14
Hello Time 2
Fwd Delay Time f
Dest Addr 00:00:00:00:00:00
Src Addr 00:00:00:00:00:00
Version Length 0
Version 2
BPDU Type 2
Flags e
|
|
|
Instance 0 Port 1
======================
Expected FdWile expiry time 0
Expected rcvdInfo exp Time 4654
Expected rrWhile exp Time 0
Expected rbWhile exp Time 0
Expected tcWhile exp Time 0
Instance 0 Port 1
TCN Var 1
STP Version 1
Proposing Flag 0
Info Is 4
|
|
|
Instance 0 Port 2
======================
Expected FdWile expiry time 0
Expected rcvdInfo exp Time 4656
Expected rrWhile exp Time 0
Expected rbWhile exp Time 0
Expected tcWhile exp Time 0
Instance 0 Port 2
TCN Var 1
STP Version 1
Proposing Flag 0
Info Is 4
|
|
Notes
|
This command is the same for both RSTP and MSTP.
|
4.5.29 show spanning-tree detail
Displays detailed spanning-tree information.
show spanning-tree detail [switch context-name]
|
|
Syntax Description
|
switch context-name - Context or switch name. This parameter is specific to multiple instance. The keyword switch is not supported.
|
|
Mode
|
Privileged EXEC
|
|
Example
|
SEFOS# show spanning-tree detail
|
|
|
Spanning tree Protocol has been enabled
MST00 is executing the mstp compatible Multiple Spanning Tree Protocol
Bridge Identifier has Priority 32768, Address 00:01:02:03:04:01
Configured Max age 20 sec, Forward delay 15 sec
Configured Hello Time 2 sec
Dynamic Path Cost Disabled
Flush Interval 0 centi-sec, Flush Invocations 72
Flush Indication threshold 0
Current Root has priority 32768, address 00:02:02:03:04:01
cost of root path is 2000
Number of Topology Changes 1, Time since topology Change 89 seconds ago
Transmit Hold-Count 3
Root Times : Max age 20 Sec Forward delay 15 Sec
|
|
|
Port 45 [Ex0/45] of MST00 is Root , Forwarding
Ex0/45 is operating in the MSTP Mode
Port path cost 2000, Port priority 128,
Port Identifier 128.45. Port HelloTime 2,
Timers: Hello - 1, Forward Delay - 0, Topology Change - 0
Designated root has priority 32768, address 00:02:02:03:04:01
|
|
|
Designated Bridge has priority 32768, address 00:02:02:03:04:01
Designated Port Id is 128.45, Designated pathcost is 0
Operational Forward delay 15, Max age 20
Received Hello Time 2 Sec
Number of Transitions to forwarding State : 1
Auto-Edge is enabled
PortFast is disabled, Oper-Edge is disabled
|
|
|
Link type is point to Point
BPDUs : sent 4, recieved 4466
Restricted Role is disabled.
Restricted TCN is disabled.
bpdu-transmit enabled
bpdu-receive enabled
Loop Guard is disabled
|
4.5.30 show spanning-tree active
Displays spanning-tree information of active ports.
show spanning-tree active [detail] [switch context-name]
|
|
Syntax Description
|
detail - Displays in detail about the port and bridge. This includes designated bridge details, designated port details, timer values, root bridge, and so on.
switch context-name - Context or switch name. This parameter is specific to multiple instance. The keyword switch is not supported.
|
|
Mode
|
Privileged EXEC
|
|
Example
|
Single Instance:
SEFOS# show spanning-tree active
Root Id Priority 32768
Address 00:02:02:03:04:01
Cost 2000
Port 45 [Ex0/45]
Max age 20 Sec, forward delay 15 Sec
Hello Time 2 Sec
MST00
Spanning tree Protocol has been enabled
MST00 is executing the stp compatible Multiple Spanning Tree Pr
otocol
Bridge Id Priority 32768
Address 00:01:02:03:04:01
Max age is 20 sec, forward delay is 15 sec
|
|
|
Hello Time is 2 sec
Dynamic Path Cost is Disabled
Dynamic Path Cost Lag-Speed Change is Disabled
Name Role State Cost Prio Type
---- ---- ----- ---- ---- ----
Ex0/45 Root Learning 2000 128 P2P
|
|
|
SEFOS# show spanning-tree active switch default
Root Id Priority 32768
Address 00:02:02:03:04:01
Cost 2000
Port 45 [Ex0/45]
Max age 20 Sec, forward delay 15 Sec
Hello Time 2 Sec
MST00
Spanning tree Protocol has been enabled
MST00 is executing the stp compatible Multiple Spanning Tree Pr
otocol
Bridge Id Priority 32768
Address 00:01:02:03:04:01
Max age is 20 sec, forward delay is 15 sec
Hello Time is 2 sec
Dynamic Path Cost is Disabled
Dynamic Path Cost Lag-Speed Change is Disabled
Name Role State Cost Prio Type
---- ---- ----- ---- ---- -----
Ex0/45 Root Learning 2000 128 P2P
|
4.5.31 show spanning-tree interface
Diplays spanning-tree port configuration.
show spanning-tree interface interface-type interface-id [{cost | priority | portfast | rootcost | restricted-role | restricted-tcn | state | stats | detail}]
|
|
Syntax Description
|
cost - spanning-tree port cost
state - spanning-tree state
stats - Displays the input and output packets by switching path for the interface
priority - spanning-tree port priority
portfast - spanning-tree portfast state
rootcost - spanning-tree rootcost (pathcost to reach the root ) value
restricted-role - Spanning-tree Restricted Role
restricted-tcn - Spanning-tree Restricted Topology Change
detail - Displays in detail about the port and bridge
|
|
Mode
|
Privileged EXEC
|
|
Example
|
SEFOS# show spanning-tree interface extreme-ethernet 0/1
Instance Role State Cost Prio Type
-------- ---- ----- ---- ---- ----
MST00 Root Forwarding 200000 128.1 SharedLan
SEFOS# show spanning-tree interface extreme-ethernet 0/1 cost
Port cost is 200000
SEFOS# show spanning-tree interface extreme-ethernet 0/1 priority
Port Priority is 128
|
|
|
SEFOS# show spanning-tree interface extreme-ethernet 0/1 portfast
PortFast is disabled
SEFOS# show spanning-tree interface extreme-ethernet 0/1 rootcost
Root Cost is 200000
SEFOS# show spanning-tree interface extreme-ethernet 0/1 state
Forwarding
|
|
|
SEFOS# show spanning-tree interface extreme-ethernet 0/1 stats
Statistics for Port Ex0/1
Number of Transitions to forwarding State : 1
Number of RSTP BPDU Count received : 1692
Number of Config BPDU Count received : 9
Number of TCN BPDU Count received : 0
Number of RSTP BPDU Count Transmitted : 735
Number of Config BPDU Count Transmitted : 11
Number of TCN BPDU Count Transmitted : 0
Number of Invalid BPDU Count Transmitted : 0
Port Protocol Migration Count : 1
|
|
|
SEFOS# show spanning-tree interface extreme-ethernet 0/1 detail
Port 1 [Ex0/1] of MST00 is Alternate , Discarding
Ex0/1 is operating in the MSTP Mode
Port path cost 2000, Port priority 128,
Port Identifier 128.1. Port HelloTime 2,
Timers: Hello - 1, Forward Delay - 0, Topology Change - 0
Designated root has priority 32768, address 00:02:02:03:04:01
Designated Bridge has priority 32768, address 00:02:02:03:04:01
Designated Port Id is 128.1, Designated pathcost is 0
Operational Forward delay 15, Max age 20
Received Hello Time 2 Sec
Number of Transitions to forwarding State : 1
Auto-Edge is disabled
PortFast is disabled, Oper-Edge is disabled
Link type is point to Point
BPDUs : sent 19, recieved 484
Restricted Role is disabled.
Restricted TCN is disabled.
bpdu-transmit enabled
bpdu-receive enabled
Loop Guard is enabled
|
|
|
SEFOS# show spanning-tree interface extreme-ethernet 0/1 restricted-role
Restricted Role is Disabled
SEFOS# show spanning-tree interface extreme-ethernet 0/1 restricted-tcn
Restricted TCN is Disabled
|
|
|
Multiple Instance:
SEFOS# show spanning-tree interface extreme-ethernet 0/1
Switch - default
Role State Cost Prio Type
---- ----- ---- ---- ----
Root Forwarding 200000 128 SharedLan
SEFOS# show spanning-tree interface extreme-ethernet 0/1 cost
Port cost is 200000
Switch - default
|
|
|
SEFOS# show spanning-tree interface extreme-ethernet 0/1 priority
Switch - default
Port Priority is 128
SEFOS# show spanning-tree interface extreme-ethernet 0/1 portfast
Switch - default
PortFast is disabled
|
|
|
SEFOS# show spanning-tree interface extreme-ethernet 0/1 rootcost
Switch - default
Root Cost is 200000
SEFOS# show spanning-tree interface extreme-ethernet 0/1 state
Switch - default
Forwarding
SEFOS# show spanning-tree interface extreme-ethernet 0/1 stats
Switch - default
|
|
|
Statistics for Port Ex0/1
Number of Transitions to forwarding State : 1
Number of RSTP BPDU Count received : 1692
Number of Config BPDU Count received : 9
Number of TCN BPDU Count received : 0
Number of RSTP BPDU Count Transmitted : 735
Number of Config BPDU Count Transmitted : 11
Number of TCN BPDU Count Transmitted : 0
Number of Invalid BPDU Count Transmitted : 0
Port Protocol Migration Count : 1
SEFOS# show spanning-tree interface extreme-ethernet 0/1 detail
Port 1 [Ex0/1] of MST00 is Root , Forwarding
Ex0/1 is operating in the MSTP Mode
Port path cost 2000, Port priority 128,
Port Identifier 128.1. Port HelloTime 2,
Timers: Hello - 0, Forward Delay - 0, Topology Change - 0
Designated root has priority 32768, address 00:02:02:03:04:01
Designated Bridge has priority 32768, address
|
|
|
00:02:02:03:04:01
Designated Port Id is 128.1, Designated pathcost is 0
Operational Forward delay 15, Max age 20
Received Hello Time 2 Sec
Number of Transitions to forwarding State : 2
Auto-Edge is enabled
PortFast is disabled, Oper-Edge is disabled
Link type is point to Point
BPDUs : sent 21, recieved 1331
Restricted Role is disabled.
Restricted TCN is disabled.
bpdu-transmit enabled
bpdu-receive enabled
Loop Guard is disabled
|
|
|
SEFOS# show spanning-tree interface fast 0/1 restricted-role
Switch - default
Restricted Role is Disabled
SEFOS# show spanning-tree interface fast 0/1 restricted-tcn
Switch - default
Restricted TCN is Disabled
|
|
Notes
|
Enter each interface separated by a space. Ranges are not supported. Valid interfac es include physical ports. VLANs, and port channels.
|
4.5.32 show spanning-tree root
Displays spanning-tree root information.
show spanning-tree root [{address | cost | forward-time | id | max-age | port | priority | detail }] [switch context-name]
|
|
Syntax Description
|
address - Root bridge MAC address.
cost - Cost value associated with the port.
forward-time - Root bridge forward time.
id - Root bridge identifier.
max-age - Root bridge maximum age
port - Root port
priority - Root bridge priority
detail - Displays in detail about the port and bridge. This information includes designated bridge details, designated port details, timer values, root bridge, and so on.
switch context-name - Context or switch name. This parameter is specific to multiple instance. The keyword switch is not supported.
|
|
Mode
|
Privileged EXEC
|
|
Example
|
Single Instance:
SEFOS# show spanning-tree root
Root ID RootCost MaxAge FwdDly RootPort
------- -------- ------ ------ --------
80:00:00:01:02:03:04:11 0 20 15 0
SEFOS# show spanning-tree root address
Root Bridge Address is 00:01:02:03:04:11
|
|
|
SEFOS# show spanning-tree root cost
Root Cost is 0
SEFOS# show spanning-tree root forward-time
Forward delay is 15 sec
|
|
|
SEFOS# show spanning-tree root id
Root Bridge Id is 80:00:00:01:02:03:04:11
SEFOS# show spanning-tree root max-age
Root MaxAge is 20
SEFOS# show spanning-tree root port
Root Port is 0
|
|
|
SEFOS# show spanning-tree root priority
Root Priority is 32768
SEFOS# show spanning-tree root detail
We are the root of the spanning-tree
Root Id Priority 32768
Address 00:01:02:03:04:11
Cost 0
Port 0
Hello Time 2 Sec, Max Age 20 Sec, Forward Delay 15 Sec
|
|
|
Multiple Instance:
SEFOS# show spanning-tree root
Switch - default
Instance Root ID RootCost MaxAge FwdDly RootPort
-------- ------- -------- ------ ------ --------
MST00 80:00:00:01:02:03:04:01 0 20 15 0
Switch - cust1
|
|
|
Instance Root ID RootCost MaxAge FwdDly RootPort
-------- ------- -------- ------ ------ --------
MST00 00:00:00:01:02:03:04:04 200000 20 15 Ex0/2
|
4.5.33 show spanning-tree bridge
Displays the spanning-tree configuration of the bridge.
show spanning-tree bridge [{address | forward-time | hello-time | id | max-age | protocol | priority | detail}] [switch context-name]
|
|
Syntax Description
|
address - Bridge address.
forward-time - Bridge forward time.
hello-time - Bridge hello time.
id - Bridge identifier.
max-age - Bridge maximum age.
protocol - spanning-tree protocol.
priority - Bridge priority.
detail - Bridge detail.
switch context-name - Context or switch name. This parameter is specific to multiple instance. The keyword switch is not supported.
|
|
Mode
|
Privileged EXEC
|
|
Example
|
Single Instance:
SEFOS# show spanning-tree bridge address
Bridge Address is 00:01:02:03:04:21
SEFOS# show spanning-tree bridge forward-time
Bridge Forward delay is 15 sec
SEFOS# show spanning-tree bridge
Bridge ID HelloTime MaxAge FwdDly Protocol
--------- --------- ------ ------ --------
80:00:00:01:02:03:04:21 2 20 15 rstp
SEFOS# show spanning-tree bridge hello-time
Bridge Hello Time is 2 sec
|
|
|
SEFOS# show spanning-tree bridge id
Bridge ID is 80:00:00:01:02:03:04:21
SEFOS# show spanning-tree bridge max-age
Bridge Max Age is 20 sec
SEFOS# show spanning-tree bridge protocol
Bridge Protocol Running is RSTP
|
|
|
SEFOS# show spanning-tree bridge priority
Bridge Priority is 32768
SEFOS# show spanning-tree bridge detail
Bridge Id Priority 32768,
Address 00:01:02:03:04:21
Hello Time 2 sec, Max Age 20 sec, Forward Delay 15 sec
|
|
|
Multiple Instance:
SEFOS# show spanning-tree bridge
Switch - default
MST Instance Bridge ID MaxAge FwdDly Protocol
------------ --------- ------ ------ --------
MST00 0 :00:00:01:02:03:04:01 20 15 mstp
Switch - cust1
|
|
|
MST Instance Bridge ID MaxAge FwdDly Protocol
------------ --------- ------ ------ --------
MST00 0 :00:00:01:02:03:04:02 20 15 mstp
SEFOS# show spanning-tree bridge address
Switch - default
MST00 00:01:02:03:04:01
Switch - cust1
MST00 00:01:02:03:04:0
|
|
Notes
|
Expressions are case sensitive.
|
4.5.34 show spanning-tree mst - CIST or Specified MST Instance
Displays multiple spanning-tree information for the CIST instance or specified MST instance.
show spanning-tree mst [instance-id_1-64 | 4094] [detail] [switch context-name]
|
|
Syntax Description
|
instance-id_1-64 - Range of spanning-tree instances.
detail - Spanning-tree MST instance specific details.
switch contex-name - Context or switch name. This parameter is specific to multiple instance. The keyword switch is not supported.
|
|
Mode
|
Privileged EXEC
|
|
Example
|
Single Instance:
SEFOS# show spanning-tree mst 1
## MST01
Vlans mapped: 2
Bridge Address 00:01:02:03:04:11 Priority 32768
Root Address 00:01:02:03:04:11 Priority 32768
Root this switch for MST01
Interface Role Sts Cost Prio.Nbr Type
--------- ---- --- ---- -------- ----
Ex0/1 Master Forwarding 200000 128.1 SharedLan
SEFOS# show spanning-tree mst 1 detail
## MST01
|
|
|
Vlans mapped: 2
Bridge Address 00:01:02:03:04:11 Priority 32768
Root Address 00:01:02:03:04:11 Priority 32768
Root this switch for MST01
Ex0/1 of MST01 is Master , Forwarding
Port info port id 128.1 priority 128 cost 200000
Designated root address 00:01:02:03:04:11 priority 32768 cost 0
Designated bridge address 00:01:02:03:04:11 priority 32768 port id 128.1
|
|
|
Multiple Instance:
SEFOS# show spanning-tree mst 1
Switch - default
## MST01
Vlans mapped: 2
Bridge Address 00:01:02:03:04:11 Priority 32768
Root Address 00:01:02:03:04:11 Priority 32768
Root this switch for MST01
Interface Role Sts Cost Prio.Nbr Type
--------- ---- --- ---- -------- ----
Ex0/1 Master Forwarding 200000 128.1 SharedLan
|
|
Notes
|
The option mst is available only when MSTP is the operational mode of the spanning-tree.
|
4.5.35 show spanning-tree mst configuration
Diplays multiple spanning-tree instance configuration.
show spanning-tree mst configuration [switch context-name]
|
|
Syntax Description
|
switch context-name - Context or switch name. This parameter is specific to multiple instance.
The keyword switch is not supported.
|
|
Mode
|
Privileged EXEC
|
|
Example
|
Single Instance:
SEFOS# show spanning-tree mst configuration
Name [00:01:02:99:99:99]
Revision 0
Instance Vlans mapped
-------- ------------------------------------------
0 11-1024,1025-2048,2049-3072,3073-4094
1 -
2 -
4094 1-10
-------------------------------------------------------
|
|
|
Multiple Instance:
SEFOS# show spanning-tree mst configuration
Switch - default
Name [00:01:02:03:04:01]
Revision 0
Instance Vlans mapped
-------- ------------------------------------------
0 1-1024,1025-2048,2049-3072,3073-4094
-------------------------------------------------------
Switch - cust1
|
|
|
Name [00:01:02:03:04:02]
Revision 0
Instance Vlans mapped
-------- ------------------------------------------
0 1-1024,1025-2048,2049-3072,3073-4094
-------------------------------------------------------
|
- name - Sets Configuration name
- revision - Sets the configuration revision number
- instance - Maps VLANs to an MST instance
4.5.36 show spanning-tree mst - Port Specific Information
Displays multiple spanning-tree port specific configuration.
show spanning-tree mst [instance-id_1-64 ] interface interface-type interface-id [{stats | hello-time | detail}]
|
|
Syntax Description
|
instance-id - Range of spanning-tree instances.
interface - Details about a particular interface.
stats - Displays the input and output packets by switching path for the interface.
hello-time - Determines how often the switch broadcasts its hello. message to other switches when it is the root of the spanning-tree.
detail - Detailed multiple spanning-tree port specific configuration.
|
|
Mode
|
Privileged EXEC
|
|
Example
|
SEFOS# show spanning-tree mst 1 interface extreme-ethernet 0/1
Instance Role Sts Cost Prio.Nbr
-------- ---- --- ---- --------
1 Master Forwarding 200000 128.1
SEFOS# show spanning-tree mst 1 interface extreme-ethernet 0/1 stats
MST01 Bpdus sent 2, Received 0
SEFOS# show spanning-tree mst 1 interface extreme-ethernet 0/1 hello-time
MST01 2
SEFOS# show spanning-tree mst 1 interface extreme-ethernet 0/1 detail
|
|
|
Ex0/1 of MST01 is Master , Forwarding
Port info port id 128.1 priority 128 cost 200000
Designated root address 00:01:02:03:04:11 priority 32768 cost 0
Designated bridge address 00:01:02:03:04:11 priority 32768 port id 128.1
|
|
Notes
|
Valid interfaces include physical ports and port channels.
|
4.5.37 show customer spanning-tree
Displays the detailed customer spanning-tree information.
show customer spanning-tree [cep interface interface-type interface-id] [{detail [active] | active [detail]}]
|
|
Syntax Description
|
cep interface interface-type interface-id - Customer edge port
detail - Displays in detail about the port and bridge. This includes designated Bridge details, designated port details, timer values, root bridge, and so on.
active - Displays the bridge and details of the active (active ports are those ports that are participating in the spanning-tree) ports.
|
|
Mode
|
Privileged EXEC
|
|
Example
|
Single Instance:
SEFOS# show customer spanning-tree cep interface fast 0/1
Port [Ex0/1]
We are the root of the spanning-tree
Root Id Priority 65535
Address 00:01:02:03:04:01
Cost 0
Root Ports
Hello Time 2 Sec, Max Age 0 Sec, Forward Delay 0 Sec
Customer spanning-tree Enabled Protocol RSTP
Bridge Id Priority 65535
Address 00:01:02:03:04:01
Hello Time 2 sec, Max Age 20 sec, Forward Delay 15 sec
|
|
|
Name Role State Cost Prio Type
---- ---- ----- ---- ---- ------
PEP-Service: 2 Designated Forwarding 128 32 SharedLan
CEP-Ex0/1 Designated Forwarding 200000 32 SharedLan
SEFOS# show customer spanning-tree
Port [Ex0/1]
We are the root of the spanning-tree
Root Id Priority 65535
Address 00:01:02:03:04:01
Cost 0
Root Ports
Hello Time 2 Sec, Max Age 0 Sec, Forward Delay 0 Sec
|
|
|
Customer spanning-tree Enabled Protocol RSTP
Bridge Id Priority 65535
Address 00:01:02:03:04:01
Hello Time 2 sec, Max Age 20 sec, Forward Delay 15 sec
Name Role State Cost Prio Type
---- ---- ----- ---- ---- ------
PEP-Service: 2 Designated Forwarding 128 32 SharedLan
CEP-Ex0/1 Designated Forwarding 200000 32 SharedLan
-------------------------------------------------------
|
|
|
Multiple Instance:
SEFOS# show customer spanning-tree
Switch default
Port [Ex0/1]
We are the root of the spanning-tree
Root Id Priority 65535
Address 00:01:02:03:04:01
Cost 0
Root Ports
Hello Time 2 Sec, Max Age 0 Sec, Forward Delay 0
|
|
|
Sec
Customer spanning-tree Enabled Protocol RSTP
Bridge Id Priority 65535
Address 00:01:02:03:04:01
Hello Time 2 sec, Max Age 20 sec, Forward Delay 15 sec
Name Role State Cost Prio Type
---- ---- ----- ---- ---- ------
PEP-Service: 2 Designated Forwarding 128 32 SharedLan
CEP-Ex0/1 Designated Forwarding 200000 32 SharedLan
SEFOS# show customer spanning-tree cep interface fastethernet 0/1
Switch default
|
|
|
Port [Ex0/1]
We are the root of the spanning-tree
Root Id Priority 65535
Address 00:01:02:03:04:01
Cost 0
Root Ports
Hello Time 2 Sec, Max Age 0 Sec, Forward Delay 0 Sec
Customer spanning-tree Enabled Protocol RSTP
Bridge Id Priority 65535
|
|
|
Address 00:01:02:03:04:01
Hello Time 2 sec, Max Age 20 sec, Forward Delay 15 sec
Name Role State Cost Prio Type
---- ---- ----- ---- ---- ------
PEP-Service: 2 Designated Forwarding 128 32 SharedLan
CEP-Ex0/1 Designated Forwarding 200000 32 SharedLan
|
|
Notes
|
The port must be configured as CEP.
|
show customer spanning-tree - Displays the detailed customer spanning information
4.5.38 spanning-tree mode-mst|rst|pvrst|pvst
Sets the spanning-tree operating mode. The no form of the command sets the default spanning-tree operating mode.
spanning-tree mode {mst | rst | pvrst | pvst}
|
|
Syntax Description
|
mst - Multiple spanning-tree configuration.
rst - Rapid spanning-tree configuration.
pvrst - Per-VLAN-rapid spanning-tree configuration.
pvst - Per-VLAN-spanning-tree configuration. The keyword pvst is not supported.
|
|
Mode
|
Global Configuration
|
|
Defaults
|
mst
|
|
Example
|
SEFOS(config)# spanning-tree mode pvrst
|
|
Notes
|
- When SEFOS boots up, spanning-tree is enabled by default with MSTP operating in the switch.
- This command starts and enables only the spanning-tree mode. However, port-roles and states are computed only after enabling the spanning-tree.
- If the user-input for the spanning-tree mode is different from the current mode of operation, SEFOS shuts down the operational spanning-tree and start the spanning-tree as per user-input.
- GVRP must be disabled for setting the spanning-tree mode as PVRST.
|
4.5.39 spanning-tree vlan
Configures spanning-tree on a per VLAN basis. The no form of the command is used to return to the default setting.
spanning-tree vlan 1-4094 {forward-time 4-30 | hello-time 1-10 | max-age 6-40 | hold-count 1-10 | brg-priority 0-61440 | root {primary | secondary}}
|
no spanning-tree vlan 1-4096 {forward-time | hello-time | max-age | hold-count | brg-priority | root}
|
|
Syntax Description
|
vlan-id - VLAN identifier associated with a spanning-tree instance. The range is 1 to 4094.
forward-time - The range is 4 to 30 seconds. Sets the forward-delay time for the specified spanning-tree instance. The forwarding time controls how long each of the listening and learning states last before the interface begins forwarding.
hello-time - The range is 1 to 10 seconds. Sets the interval between hello bridge protocol data units (BPDUs) sent by the switch.
max-age - The range is 6 to 40 seconds. Sets the interval between messages the spanning-tree receives from the root switch. If a switch does not receive a BPDU message from the root switch within this interval, it recomputes the spanning-tree topology.
hold-count - The range is 1 to 10. Sets the holding limit of the bridge. The bridge responds to the messages only when it is within the range of its hold-count.
brg-priority - Sets the bridge priority for the given instance.
root - Sets the spanning-tree root with two options:
- primary - Forces the switch to be the root bridge.
- secondary - Forces the switch to be the root switch when the primary root fails.
|
|
Mode
|
Global Configuration
|
|
Defaults
|
Spanning-tree is enabled on all VLANs.
forward-delay - 15 seconds.
hello-time - 2 seconds.
max-age - 20 seconds.
hold-count - 3
brg-priority - 32768 + vlan-id
|
|
Example
|
SEFOS(config)# no spanning-tree vlan 5 hello-time
SEFOS(config)# spanning-tree vlan 20 forward-time 18
|
show spanning-tree active - Displays spanning-tree information of active ports
4.5.40 spanning-tree bpduguard
Places an interface in the error-disabled state when it receives a bridge protocol data unit (BPDU). The no form of the command sets it to the default configuration of bpduguard.
spanning-tree bpduguard {disable | enable}
|
no spanning-tree bpduguard
|
|
Syntax Description
|
disable - Disables BPDU guard on the specified interface
enable - Enables BPDU guard on the specified interface
|
|
Mode
|
Interface Configuration
|
|
Defaults
|
BPDU guard is disabled.
|
|
Example
|
SEFOS(config-if)# switchport mode trunk
SEFOS(config-if)# spanning-tree bpduguard enable
|
4.5.41 spanning-tree guard
Enables root guard or loop guard on all the VLANs associated with the selected interface. The no form of the command is used to return to the default setting.
spanning-tree guard {root | none | loop}
|
|
Syntax Description
|
root - Enables root guard on the specified interface. Root guard restricts which interface is allowed to be the spanning-tree root port or the path-to-the-root for the switch.
none - Disables root guard on the specified interface
loop - Enables loop guard on the specified interface. Loop guard prevents alternate or root ports from becoming designated ports when a failure creates a unidirectional link.
|
|
Mode
|
Interface Configuration
|
|
Defaults
|
Root guard is disabled.
|
|
Example
|
SEFOS(config-if)# spanning-tree guard root
|
|
Notes
|
VLAN port mode should be configured as trunk port prior to the execution of this command.
|
switchport mode - Configures the VLAN port mode.
4.5.42 spanning-tree encap
Sets the encapsulation type on the interface. The no form of the command sets the encapsulation type to dot1q.
spanning-tree encap {dot1q | ISL}
|
|
Syntax Description
|
dot1q - Sets the encapsulation type as dot1q
ISL - Sets the encapsulation type as ISL
|
|
Mode
|
Interface Configuration
|
|
Defaults
|
dot1q encapsulation is set.
|
|
Example
|
SEFOS(config-if)# switchport mode trunk
SEFOS(config-if)# spanning-tree encap ISL
|
4.5.43 spanning-tree vlan status
Enables or disables the PVRST status of an instance on a port.
spanning-tree vlan 1-4094 status {disable | enable}
|
|
Syntax Description
|
vlan-id 1-4094 - VLAN identifier
disable - Disables the PVRST status for the VLAN-ID
enable - Enables the PVRST status for the VLAN-ID
|
|
Mode
|
Interface Configuration
|
|
Defaults
|
PVRST status is enable
|
|
Example
|
SEFOS(config-if)# spanning-tree vlan 1 status disable
|
show spanning-tree vlan - interface - Displays spanning-tree port information
4.5.44 spanning-tree vlan port-priority
Sets port priority for the given VLAN. The no form of the command sets port priority for the given VLAN to the default value.
spanning-tree vlan 1-4094 port-priority 0-240
|
no spanning-tree vlan 1-4094 port-priority
|
|
Syntax Description
|
vlan - VLAN identifier
port-priority - Port priority value
|
|
Mode
|
Interface Configuration
|
|
Defaults
|
port-priority - 128
|
|
Example
|
SEFOS(config-if)# spanning-tree vlan 1 port-priority 16
|
show spanning-tree vlan - interface - Displays spanning-tree port information
4.5.45 spanning-tree vlan cost
Sets port cost for the given VLAN. The no form of the command sets the spanning-tree VLAN cost to the default value.
spanning-tree vlan 1-4094 cost 0-200000
|
no spanning-tree vlan 1-4094 cost
|
|
Syntax Description
|
vlan - VLAN identifier.
cost - Cost value per VLAN.
|
|
Mode
|
Interface Configuration
|
|
Defaults
|
Cost on the port is 200000.
|
|
Example
|
SEFOS(config-if)# spanning-tree vlan 1 cost 250
|
show spanning-tree vlan - interface - Displays spanning-tree port information
4.5.46 show spanning-tree vlan - blockedports|pathcost|summary
Displays spanning-tree information, such as summary, blocked ports, and path cost.
show spanning-tree vlan 1-4094 [{active [detail] | blockedports | detail [active] | pathcost-method | summary}]
|
|
Syntax Description
|
vlan - VLAN identifier.
active [detail] - Displays details about the port and bridge, including: designated bridge details, designated port details, timer values, root bridge, and so on.
blockedports - Blocked ports in the system.
detail [active] - Displays the bridge and details of the active ports (active ports are those ports that are participating in the spanning-tree).
pathcost-method - spanning-tree port priority.
summary - Summary of port states.
|
|
Mode
|
Privileged EXEC
|
|
Example
|
Single Instance:
SEFOS# show spanning-tree vlan 1 active
Spanning-tree for VLAN 1
Root Id Priority 32768
Address 00:02:02:03:04:01
Cost 2000
Port Ex0/46
Hello Time 2 Sec, Max Age 20 Sec, Forward Delay 15 Sec
Spanning Tree Enabled Protocol PVRST
Bridge Id Priority 32769
Address 00:01:02:03:04:01
Hello Time 2 sec, Max Age 20 sec, Forward Delay 15 sec
Dynamic Path Cost is Disabled
Dynamic Path Cost Lag-Speed Change is Disabled
Name Role State Cost Prio Type
---- ---- ----- ---- ---- ------
Ex0/46 Root Forwarding 2000 128 P2P
|
|
|
Name Role State Cost Prio Type
---- ---- ----- ---- ---- ------
Ex0/1 Designated Forwarding 200000 128 SharedLan
SEFOS# show spanning-tree vlan 1 active detail
Spanning-tree for VLAN 1
Bridge is executing the rstp compatible PVRST Protocol
Bridge Identifier has priority 32769, Address 00:01:02:03:04:01
Configured Hello time 2 sec, Max Age 20 sec, Forward Delay 15 sec
Dynamic Path Cost is Disabled
Number of Topology Changes 1
Time since topology Change 0 seconds ago
Transmit Hold-Count 3
Root Times: Max Age 20 Sec, Forward Delay 15 Sec, Hello Time 2 Sec
Port 46 [Ex0/46] of VLAN 1 is Root , Forwarding
Port PathCost 2000 , Port Priority 128 , Port Identifier 128.46
Designated Root has priority 32768, address 00:02:02:03:04:01
Designated Bridge has priority 32768, address 00:02:02:03:04:01
Designated Port Id is 128.46, Designated PathCost 0
Timers: Hello Time - 2, MaxAge - 20, Forward Delay - 15, Hold - 1
No of Transitions to forwarding State :1
BPDUs : sent 3 , recieved 46
|
|
|
SEFOS# show spanning-tree vlan 1 blockedports
Blocked Interfaces List:
Ex0/2,Ex0/3,Ex0/4,Ex0/5,Ex0/6,Ex0/7,Ex0/8,Ex0/9,Ex0/10, ...
|
|
|
The Number of Blocked Ports in the system is :23
SEFOS# show spanning-tree vlan 1 detail active
Spanning-tree for VLAN 1
Bridge is executing the rstp compatible PVRST Protocol
Bridge Identifier has priority 32769, Address 00:01:02:03:04:01
Configured Hello time 2 sec, Max Age 20 sec, Forward Delay 15 sec
Dynamic Path Cost is Disabled
Number of Topology Changes 1
Time since topology Change 0 seconds ago
Transmit Hold-Count 3
Root Times: Max Age 20 Sec, Forward Delay 15 Sec, Hello Time 2 Sec
|
|
|
Port 46 [Ex0/46] of VLAN 1 is Root , Forwarding
Port PathCost 2000 , Port Priority 128 , Port Identifier 128.46
Designated Root has priority 32768, address 00:02:02:03:04:01
Designated Bridge has priority 32768, address 00:02:02:03:04:01
Designated Port Id is 128.46, Designated PathCost 0
Timers: Hello Time - 2, MaxAge - 20, Forward Delay - 15, Hold - 1
No of Transitions to forwarding State :1
BPDUs : sent 3 , recieved 46
|
|
|
SEFOS# show spanning-tree vlan 1 pathcost-method
spanning-tree port pathcost method is Long
SEFOS# show spanning-tree vlan 1 summary
spanning-tree enabled protocol is PVRST
Spanning-tree pathcost method is long
PVRST Port Roles and States
Port-Index Port-Role Port-State Port-Status
---------- --------- ---------- -----------
1 Designated Forwarding Enabled
2 Designated Forwarding Enabled
3 Designated Discarding Enabled
4 Designated Discarding Enabled
5 Designated Discarding Enabled
6 Designated Discarding Enabled
7 Designated Discarding Enabled
8 Designated Discarding Enabled
...
|
|
|
Multiple Instance:
SEFOS# show spanning-tree
Root Id Priority 32768
Address 00:02:02:03:04:01
Cost 2000
Port 45 [Ex0/45]
Max age 20 Sec, forward delay 15 Sec
Hello Time 2 Sec
MST00
Spanning tree Protocol has been enabled
MST00 is executing the stp compatible Multiple Spanning Tree Pr
otocol
Bridge Id Priority 32768
Address 00:01:02:03:04:01
Max age is 20 sec, forward delay is 15 sec
Hello Time is 2 sec
Dynamic Path Cost is Disabled
Dynamic Path Cost Lag-Speed Change is Disabled
Name Role State Cost Prio Type
---- ---- ----- ---- ---- -----
Ex0/45 Root Learning 2000 128 P2P
|
|
|
SEFOS# show spanning-tree vlan 1 active
Spanning-tree for VLAN 1
Root Id Priority 32768
Address 00:02:02:03:04:01
Cost 2000
Port Ex0/46
Hello Time 2 Sec, Max Age 20 Sec, Forward Delay 15 Sec
Spanning Tree Enabled Protocol PVRST
Bridge Id Priority 32769
Address 00:01:02:03:04:01
Hello Time 2 sec, Max Age 20 sec, Forward Delay 15 sec
Dynamic Path Cost is Disabled
Dynamic Path Cost Lag-Speed Change is Disabled
Name Role State Cost Prio Type
---- ---- ----- ---- ---- ------
Ex0/46 Root Forwarding 2000 128 P2P
|
|
|
SEFOS# show spanning-tree vlan 1 active detail switch default
Spanning-tree for VLAN 1
Root Id Priority 32768
Address 00:02:02:03:04:01
Cost 2000
Port Ex0/46
Hello Time 2 Sec, Max Age 20 Sec, Forward Delay 15 Sec
Spanning Tree Enabled Protocol PVRST
Bridge Id Priority 32769
Address 00:01:02:03:04:01
Hello Time 2 sec, Max Age 20 sec, Forward Delay 15 sec
Dynamic Path Cost is Disabled
Dynamic Path Cost Lag-Speed Change is Disabled
Name Role State Cost Prio Type
---- ---- ----- ---- ---- ------
Ex0/46 Root Forwarding 2000 128 P2P
|
|
|
Port 46 [Ex0/46] of VLAN 1 is Root , Forwarding
Port PathCost 2000 , Port Priority 128 , Port Identifier 128.46
Designated Root has priority 32768, address 00:02:02:03:04:01
Designated Bridge has priority 32768, address 00:02:02:03:04:01
Designated Port Id is 128.46, Designated PathCost 0
Timers: Hello Time - 2, MaxAge - 20, Forward Delay - 15, Hold - 1
No of Transitions to forwarding State :1
BPDUs : sent 3 , recieved 235
|
|
|
SEFOS# show spanning-tree vlan 1 blockedports switch default
Switch default
|
|
|
Blocked Interfaces List:
The Number of Blocked Ports in the system is :0
SEFOS# show spanning-tree vlan 1 detail active switch default
Spanning-tree for VLAN 1
Bridge is executing the rstp compatible PVRST Protocol
Bridge Identifier has priority 32769, Address 00:01:02:03:04:01
Configured Hello time 2 sec, Max Age 20 sec, Forward Delay 15 sec
Dynamic Path Cost is Disabled
Number of Topology Changes 1
Time since topology Change 0 seconds ago
Transmit Hold-Count 3
Root Times: Max Age 20 Sec, Forward Delay 15 Sec, Hello Time 2 Sec
|
|
|
Port 46 [Ex0/46] of VLAN 1 is Root , Forwarding
Port PathCost 2000 , Port Priority 128 , Port Identifier 128.46
Designated Root has priority 32768, address 00:02:02:03:04:01
Designated Bridge has priority 32768, address 00:02:02:03:04:01
Designated Port Id is 128.46, Designated PathCost 0
Timers: Hello Time - 2, MaxAge - 20, Forward Delay - 15, Hold - 1
No of Transitions to forwarding State :1
BPDUs : sent 3 , recieved 235
|
|
|
SEFOS# show spanning-tree vlan 1 pathcost-method switch default
Switch default
spanning-tree port pathcost method is Long
SEFOS# show spanning-tree vlan 1 summary switch default
|
|
|
Switch default
spanning-tree enabled protocol is PVRST
Spanning-tree pathcost method is long
PVRST Port Roles and States
Port-Index Port-Role Port-State Port-Status
---------- --------- ---------- -----------
1 Designated Discarding Enabled
2 Designated Forwarding Enabled
|
|
Notes
|
Enter each interface separated by a space. Ranges are not supported.
Valid interfaces include physical ports, VLANs, and port channels.
|
4.5.47 show spanning-tree vlan - bridge
Displays the spanning-tree configuration of the bridge.
show spanning-tree vlan 1-4094 bridge [{address | detail | forward-time | hello-time | id | max-age | priority [system-id] | protocol}]
|
|
Syntax Description
|
vlan - VLAN identifier.
address - Bridge address.
detail - Bridge detail.
forward-time - Bridge forward time.
hello-time - Bridge hello time.
id - Bridge identifier.
max-age - Bridge max age.
priority - Bridge priority.
system-id - Bridge system identifier.
protocol - Spanning-tree protocol.
|
|
Mode
|
Privileged EXEC
|
|
Example
|
Single Instance:
SEFOS# show spanning-tree vlan 1 bridge
Bridge ID HelloTime MaxAge FwdDly Protocol
--------- --------- ------ ------ --------
80:00:00:01:02:03:04:01 2 20 15 Pvrst
SEFOS# show spanning-tree vlan 1 bridge address
Bridge Address is 00:01:02:03:04:01
SEFOS# show spanning-tree vlan 1 bridge detail
Bridge Id Priority 32769,
Address 00:01:02:03:04:01
Hello Time 2 sec, Max Age 20 sec,
|
|
|
Forward Delay 15 sec
SEFOS# show spanning-tree vlan 1 bridge forward-time
Bridge Forward delay is 15 sec
SEFOS# show spanning-tree vlan 1 bridge hello-time
Bridge Hello Time is 2 sec
SEFOS# show spanning-tree vlan 1 bridge id
Bridge ID is 80:00:00:01:02:03:04:01
SEFOS# show spanning-tree vlan 1 bridge max-age
Bridge Max Age is 20 sec
|
|
|
SEFOS# show spanning-tree vlan 1 bridge priority
Bridge Priority is 32769
SEFOS# show spanning-tree vlan 1 bridge priority system-id
Bridge Address is 00:01:02:03:04:01
SEFOS# show spanning-tree vlan 1 bridge protocol
Bridge Protocol Running is PVRST
|
|
|
Multiple Instance:
SEFOS# show spanning-tree vlan 1 bridge switch default
Switch default
Bridge ID HelloTime MaxAge FwdDly Protocol
--------- --------- ------ ------ --------
80:00:00:01:02:03:04:01 2 20 15 Pvrst
SEFOS# show spanning-tree vlan 1 bridge address
Switch default
|
|
|
Bridge Address is 00:01:02:03:04:01
SEFOS# show spanning-tree vlan 1 bridge detail switch default
Switch default
Bridge Id Priority 32769,
Address 00:01:02:03:04:01
Hello Time 2 sec, Max Age 20 sec, Forward Delay 15 sec
SEFOS# show spanning-tree vlan 1 bridge forward-time switch default
|
|
|
Switch default
Bridge Forward delay is 15 sec
SEFOS# show spanning-tree vlan 1 bridge hello-time switch default
Switch default
Bridge Hello Time is 2 sec
SEFOS# show spanning-tree vlan 1 bridge id switch default
Switch default
|
|
|
Bridge ID is 80:00:00:01:02:03:04:01
SEFOS# show spanning-tree vlan 1 bridge max-age switch default
Switch default
Bridge Max Age is 20 sec switch default
SEFOS# show spanning-tree vlan 1 bridge priority
Switch default
Bridge Priority is 32769
SEFOS# show spanning-tree vlan 1 bridge priority system-id switch default
|
|
|
Switch default
Bridge Address is 00:01:02:03:04:01
SEFOS# show spanning-tree vlan 1 bridge protocol switch default
Switch default
Bridge Protocol Running is PVRST
SEFOS# show spanning-tree vlan 1 bridge switch default
Switch default
|
|
|
Bridge ID HelloTime MaxAge FwdDly Protocol
--------- --------- ------ ------ --------
80:00:00:01:02:03:04:01 2 20 15 Pvrst
|
|
Notes
|
Expressions are case sensitive.
|
4.5.48 show spanning-tree vlan - root
Displays spanning-tree root information.
show spanning-tree vlan 1-4094 root [{address | cost | detail | forward-time | hello-time | root-bridge-id | max-age | port | priority [system-id]}]
|
|
Syntax Description
|
vlan-id 1-4094 - VLAN identifier.
address - Root bridge MAC address.
cost - Cost value associated with the port.
detail - Displays in detail about the port and bridge. This includes designated Bridge details, designated port details, timer values, root bridge, and so on.
forward-time - Root bridge forward time.
hello-time - Root bridge hello time.
root-bridge-id - Root bridge identifier.
max-age - Root bridge maximum age.
port - Root port.
priority - Root bridge priority.
system-id - Root bridge system identifier.
|
|
Mode
|
Privileged EXEC
|
|
Example
|
Single Instance:
SEFOS# show spanning-tree vlan 1
Spanning-tree for VLAN 1
Root Id Priority 32768
Address 00:02:02:03:04:01
Cost 2000
Port Ex0/46
Hello Time 2 Sec, Max Age 20 Sec, Forward Delay 15 Sec
Spanning Tree Enabled Protocol PVRST
Bridge Id Priority 32769
Address 00:01:02:03:04:01
Hello Time 2 sec, Max Age 20 sec, Forward Delay 15 sec
Dynamic Path Cost is Disabled
Dynamic Path Cost Lag-Speed Change is Disabled
Name Role State Cost Prio Type
---- ---- ----- ---- ---- ------
Ex0/46 Root Forwarding 2000 128 P2P
|
|
|
SEFOS# show spanning-tree vlan 1 root address
Root Bridge Address is 00:01:02:03:04:01
SEFOS# show spanning-tree vlan 1 root cost
Root Cost is 0
SEFOS# show spanning-tree vlan 1 root detail
We are the root of the spanning-tree
Root Id Priority 32769
Address 00:01:02:03:04:01
Cost 0
Port 0
Hello Time 2 Sec, Max Age 20 Sec, Forward Delay 15 Sec
|
|
|
SEFOS# show spanning-tree vlan 1 root forward-time
Forward delay is 15 sec
SEFOS# show spanning-tree vlan 1 root hello-time
Hello Time is 2 sec
SEFOS# show spanning-tree vlan 1 root id
Root Bridge Id is 80:01:00:01:02:03:04:01
|
|
|
SEFOS# show spanning-tree vlan 1 root max-age
Root MaxAge is 20
SEFOS# show spanning-tree vlan 1 root port
Root Port is 0
SEFOS# show spanning-tree vlan 1 root priority
Root Priority is 32769
|
|
|
Multiple Instance:
SEFOS# show spanning-tree vlan 1 root switch default
Switch default
Root ID RootCost HelloTime MaxAge FwdDly RootPort
------- -------- --------- ------ ------ --------
80:01:00:01:02:03:04:01 0 2 20 15 0
SEFOS# show spanning-tree vlan 1 root address switch default
|
|
|
Switch default
Root Bridge Address is 00:01:02:03:04:01
SEFOS# show spanning-tree vlan 1 root cost
Switch default
Root Cost is 0
SEFOS# show spanning-tree vlan 1 root detail switch default
Switch default
We are the root of the spanning-tree
Root Id Priority 32769
Address 00:01:02:03:04:01
Cost 0
Port 0
Hello Time 2 Sec, Max Age 20 Sec, Forward Delay 15 Sec
|
|
|
SEFOS# show spanning-tree vlan 1 root forward-time
Switch default
|
|
|
Forward delay is 15 sec
SEFOS# show spanning-tree vlan 1 root hello-time switch default
Switch default
Hello Time is 2 sec
SEFOS# show spanning-tree vlan 1 root id switch default
Switch default
Root Bridge Id is 80:01:00:01:02:03:04:01
SEFOS# show spanning-tree vlan 1 root max-age switch default
Switch default
|
|
|
Root MaxAge is 20
SEFOS# show spanning-tree vlan 1 root port switch default
Switch default
Root Port is 0
SEFOS# show spanning-tree vlan 1 root priority switch default
Switch default
Root Priority is 32769
SEFOS# show spanning-tree vlan 1 root priority system-id switch default
Switch default
|
4.5.49 show spanning-tree vlan - interface
Displays instance specific interface information.
show spanning-tree vlan 1-4094 interface ifXtype ifnum [{cost | detail | priority | rootcost | state | stats}]
|
|
Syntax Description
|
vlan - VLAN identifier.
ifXtype - Interface type.
ifnum - Interface number.
cost - Spanning-tree port cost.
detail - Displays detaisl about the port and bridge.
priority - Spanning-tree port priority.
rootcost - Spanning-tree root cost value (path cost to reach the root).
state - Spanning-tree state.
stats - Displays input and output packets by switching path for the interface
|
|
Mode
|
Privileged EXEC
|
|
Example
|
Single Instance:
SEFOS# show spanning-tree vlan 1 interface extreme-ethernet 0/1
Role State Cost Prio
---- ----- ---- ----
Designated Forwarding 200000 128
SEFOS# show spanning-tree vlan 1 interface extreme-ethernet 0/1 cost
Port cost is 200000
SEFOS# show spanning-tree vlan 1 interface extreme-ethernet 0/1 detail
|
|
|
Port 1 [Ex0/1] of VLAN 1 is Designated, Forwarding
Port PathCost 200000 , Port Priority 128 , Port Identifier 128.1
Designated Root has priority 32769, address 00:01:02:03:04:01
Designated Bridge has priority 32769, address 00:01:02:03:04:01
Designated Port Id is 128.1, Designated PathCost 0
Timers: Hello Time - 2, MaxAge - 20, Forward Delay - 15, Hold - 1
No of Transitions to forwarding State :1
BPDUs : sent 59 , recieved 0
|
|
|
SEFOS# show spanning-tree vlan 1 interface extreme-ethernet 0/1 priority
|
|
|
Port Priority is 128
SEFOS# show spanning-tree vlan 1 interface extreme-ethernet 0/1 rootcost
Root Cost is 0
SEFOS# show spanning-tree vlan 1 interface extreme-ethernet 0/1 state
Forwarding
SEFOS# show spanning-tree vlan 1 interface extreme-ethernet 0/1 stats
Statistics for Port Ex0/1
Number of Transitions to forwarding State : 1
|
|
|
Number of RSTP BPDU Count received : 0
Number of Config BPDU Count received : 0
Number of TCN BPDU Count received : 0
Number of RSTP BPDU Count Transmitted : 97
Number of Config BPDU Count Transmitted : 0
Number of TCN BPDU Count Transmitted : 0
Port Protocol Migration Count : 0
|
|
|
Multiple Instance:
SEFOS# show spanning-tree vlan 1 interface extreme-ethernet 0/1 cost
Switch default
Port cost is 200000
SEFOS# show spanning-tree vlan 1 interface extreme-ethernet 0/1 detail
|
|
|
Switch default
Port 1 [Ex0/1] of VLAN 1 is Designated, Forwarding
Port PathCost 200000 , Port Priority 128 , Port Identifier 128.1
|
|
|
Designated Root has priority 32769, address 00:01:02:03:04:01
Designated Bridge has priority 32769, address 00:01:02:03:04:01
Designated Port Id is 128.1, Designated PathCost 0
Timers: Hello Time - 2, MaxAge - 20, Forward Delay - 15, Hold - 1
No of Transitions to forwarding State :1
BPDUs : sent 233 , recieved 0
SEFOS# show spanning-tree vlan 1 interface extreme-ethernet 0/1 priority
Switch default
|
|
|
Port Priority is 128
SEFOS# show spanning-tree vlan 1 interface extreme-ethernet 0/1 rootcost
Switch default
Root Cost is 0
SEFOS# show spanning-tree vlan 1 interface extreme-ethernet 0/1 state
Switch default
Forwarding
SEFOS# show spanning-tree vlan 1 interface extreme-ethernet 0/1 stats
|
|
|
Switch default
Statistics for Port Ex0/1
Number of Transitions to forwarding State : 1
Number of RSTP BPDU Count received : 0
Number of Config BPDU Count received : 0
Number of TCN BPDU Count received : 0
Number of RSTP BPDU Count Transmitted : 261
Number of Config BPDU Count Transmitted : 0
Number of TCN BPDU Count Transmitted : 0
Port Protocol Migration Count : 0
|
4.5.50 show spanning-tree interface
Displays the spanning-tree port configuration.
This command is an extension of the show spanning-tree interface command. Additional options bpduguard, encapsulation type, and rootguard are added for PVRST.
show spanning-tree interface interface-type interface-id [{bpduguard | cost | encapsulationtype | priority | portfast | rootcost | rootguard | restricted-role | restricted-tcn | state | stats | detail}]
|
|
Syntax Description
|
bpduguard - Spanning-tree BPDU guard.
cost - Spanning-tree port cost.
encapsulationtype - spanning-tree encapsulation type.
state - Spanning-tree state.
stats - Displays input and output packets per switching path for the interface.
priority - Spanning-tree port priority.
portfast - Spanning-tree portfast state.
rootcost - Spanning-tree rootcost (pathcost to reach the root ) value.
rootguard - Spanning-tree rootguard.
restricted-role - Spanning-tree restricted role.
restricted-tcn - Spanning-tree restricted topology change.
detail - Displays details about the port and bridge.
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Mode
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Privileged EXEC
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Example
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Single Instance:
SEFOS# show spanning-tree interface extreme-ethernet 0/1
Role State Cost Prio Type
---- ----- ---- ---- ----
Root Forwarding 200000 128 SharedLan
SEFOS# show spanning-tree interface extreme-ethernet 0/1 cost
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Port cost is 200000
SEFOS# show spanning-tree interface extreme-ethernet 0/1 priority
Port Priority is 128
SEFOS# show spanning-tree interface extreme-ethernet 0/1 portfast
PortFast is disabled
SEFOS# show spanning-tree interface extreme-ethernet 0/1 rootcost
Root Cost is 200000
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SEFOS# show spanning-tree interface extreme-ethernet 0/1 state
Forwarding
SEFOS# show spanning-tree interface extreme-ethernet 0/1 stats
Statistics for Port Ex0/1
Number of Transitions to forwarding State : 1
Number of RSTP BPDU Count received : 1692
Number of Config BPDU Count received : 9
Number of TCN BPDU Count received : 0
Number of RSTP BPDU Count Transmitted : 735
Number of Config BPDU Count Transmitted : 11
Number of TCN BPDU Count Transmitted : 0
Number of Invalid BPDU Count Transmitted : 0
Port Protocol Migration Count : 1
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SEFOS# show spanning-tree interface extreme-ethernet 0/1 detail
Port 1 [Ex0/1] of MST00 is Alternate, Discarding
Ex0/1 is operating in the MSTP Mode
Port path cost 2000, Port priority 128,
Port Identifier 128.1. Port HelloTime 2,
Timers: Hello - 1, Forward Delay - 0, Topology Change - 0
Designated root has priority 32768, address 00:02:02:03:04:01
Designated Bridge has priority 32768, address 00:02:02:03:04:01
Designated Port Id is 128.1, Designated pathcost is 0
Operational Forward delay 15, Max age 20
Received Hello Time 2 Sec
Number of Transitions to forwarding State : 1
Auto-Edge is disabled
PortFast is disabled, Oper-Edge is disabled
Link type is point to Point
BPDUs : sent 19, recieved 484
Restricted Role is disabled.
Restricted TCN is disabled.
bpdu-transmit enabled
bpdu-receive enabled
Loop Guard is enabled
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SEFOS# show spanning-tree interface extreme-ethernet 0/1 restricted-role
Restricted Role is Disabled
SEFOS# show spanning-tree interface extreme-ethernet 0/1 restricted-tcn
Restricted TCN is Disabled
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Multiple Instance:
SEFOS# show spanning-tree interface extreme-ethernet 0/1
Switch - default
Role State Cost Prio Type
---- ----- ---- ---- ----
Root Forwarding 200000 128 SharedLan
SEFOS# show spanning-tree interface extreme-ethernet 0/1 cost
Port cost is 200000
Switch - default
SEFOS# show spanning-tree interface extreme-ethernet 0/1 priority
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Switch - default
Port Priority is 128
SEFOS# show spanning-tree interface extreme-ethernet 0/1 portfast
Switch - default
PortFast is disabled
SEFOS# show spanning-tree interface extreme-ethernet 0/1 rootcost
Switch - default
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Root Cost is 200000
SEFOS# show spanning-tree interface extreme-ethernet 0/1 state
Switch - default
Forwarding
SEFOS# show spanning-tree interface extreme-ethernet 0/1 stats
Switch - default
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Statistics for Port Ex0/1
Number of Transitions to forwarding State : 1
Number of RSTP BPDU Count received : 1692
Number of Config BPDU Count received : 9
Number of TCN BPDU Count received : 0
Number of RSTP BPDU Count Transmitted : 735
Number of Config BPDU Count Transmitted : 11
Number of TCN BPDU Count Transmitted : 0
Number of Invalid BPDU Count Transmitted : 0
Port Protocol Migration Count : 1
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SEFOS# show spanning-tree interface extreme-ethernet 0/1 detail
Port 1 [Ex0/1] of MST00 is Root , Forwarding
Ex0/1 is operating in the MSTP Mode
Port path cost 2000, Port priority 128,
Port Identifier 128.1. Port HelloTime 2,
Timers: Hello - 0, Forward Delay - 0, Topology Change - 0
Designated root has priority 32768, address 00:02:02:03:04:01
Designated Bridge has priority 32768, address 00:02:02:03:04:01
Designated Port Id is 128.1, Designated pathcost is 0
Operational Forward delay 15, Max age 20
Received Hello Time 2 Sec
Number of Transitions to forwarding State : 2
Auto-Edge is enabled
PortFast is disabled, Oper-Edge is disabled
Link type is point to Point
BPDUs : sent 21, recieved 1331
Restricted Role is disabled.
Restricted TCN is disabled.
bpdu-transmit enabled
bpdu-receive enabled
Loop Guard is disabled
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SEFOS# show spanning-tree interface fast 0/1 restricted-role
Switch - default
Restricted Role is Disabled
SEFOS# show spanning-tree interface fast 0/1 restricted-tcn
Switch - default
Restricted TCN is Disabled
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4.5.51 spanning-tree layer2-gateway-port
Configures port as layer two gateway port. The no form of the command withdraws layer two gateway port status.
spanning-tree layer2-gateway-port
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no spanning-tree layer2-gateway-port
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Mode
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Interface Configuration
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Defaults
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By default, the port is not configured as layer two gateway port.
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Example
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SEFOS(config-if)# spanning-tree layer2-gateway-port
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Notes
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The BPDU transmit status of the port must be disabled before configuring the port as layer two gateway port.
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4.5.52 spanning-tree bpdu-receive
Configures the BPDU receive status of the port.
spanning-tree bpdu-receive {enabled | disabled}
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Syntax Description
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enabled - Receives the BPDUs on the port.
disabled - Ignores the BPDUs received on the port.
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Mode
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Interface Configuration
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Defaults
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Enabled.
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Example
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SEFOS(config-if)# spanning-tree bpdu-receive enabled
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4.5.53 spanning-tree bpdu-transmit
Configures BPDU transmit status of the port.
spanning-tree bpdu-transmit {enabled | disabled}
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Syntax Description
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enabled - The port transmits BPDUs.
disabled - The port does not transmit BPDUs.
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Mode
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Interface Configuration
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Defaults
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Enabled.
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Example
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SEFOS(config-if)# spanning-tree bpdu-transmit enabled
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Notes
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The BPDU transmit status of the port must be disabled before configuring the port as layer two gateway port.
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4.5.54 spanning-tree bpdufilter
Enables or disables the BPDU filter on an interface. The no form of the command returns to the default setting.
This command operates similar to that of the spanning-tree bpdu-receive and spanning-tree bpdu-transmit commands.
spanning-tree bpdufilter {disable | enable}
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no spanning-tree bpdufilter
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Syntax Description
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enable - Enables BPDU filtering on the interface.
disable - Disables BPDU filtering on the interface.
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Mode
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Interface Configuration
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Defaults
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Disabled.
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Example
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SEFOS(config-if)# spanning-tree bpdufilter enable
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Notes
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The BPDU transmit status of the port must be disabled before configuring the port as layer two gateway port.
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4.5.55 spanning-tree mst - pseudoRootID priority
Sets the pseudoroot MAC address and priority for the spanning-tree in steps of 4096. The no form of the command resets the pseudoroot identifier for the spanning-tree to bridge identifier.
spanning-tree [mst instance-id_1-64] pseudoRootID priority 0-61440 mac-address ucast-mac
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no spanning-tree [mst instance-id_1-64] pseudoRootId
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Syntax Description
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mst - Specifies the spanning-tree instance. This value ranges from 1 to 64.
priority - Specifies the pseudoroot priority. This value ranges from 0 to 61440.
mac-address - Specifies the pseudoroot unicast MAC address.
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Mode
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Interface Configuration
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Defaults
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Default bridge identifier is set for the spanning-tree.
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Example
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SEFOS(config-if)# spanning-tree mst 1 pseudoRootId priority 8192 mac-address 00:00:12:34:45:55
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Notes
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The pseudoroot identifier is used by layer two gateway port as the root identifier in generated BPDUs.
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4.5.56 show spanning-tree interface layer2-gateway-port
Displays the spanning-tree layer two gateway port specific configuration.
show spanning-tree interface [interface-type interface-id] layer2-gateway-port [switch context_name]
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Syntax Description
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interface-type - Type of interface.
interface-id - Interface identifier.
switch - Context or switch name. This parameter is specific to multiple instance. The keyword switch is not supported.
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Mode
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Privileged EXEC
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Example
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SEFOS# show spanning-tree int extreme-ethernet 0/1 layer2-gateway-port
Port Ex0/1
PseudoRootId
Instance Priority MacAddress State
---------- ---------- ------------------- ----------
MST00 32768 00:01:02:99:99:99 Discarding
MST01 8192 00:00:12:34:45:55 Forwarding
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4.5.57 spanning-tree mst max-instance
Sets maximum MSTP instance value. The no form of the command resets maximum MSTP instance value.
spanning-tree mst max-instance 1-64
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no spanning-tree mst max-instance
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Mode
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Global Configuration
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Example
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SEFOS(config)# spanning-tree mst max-instance 1
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| Sun Ethernet Fabric Operating System CLI Base Reference Manual
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E26513-02
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Copyright © 2012, Oracle and/or its affiliates. All rights reserved.