C H A P T E R  5

IPv6 Commands

This chapter describes the IPv6 commands available in the FASTPATH® CLI.

The commands in this chapter are in one of three functional groups:

This chapter contains the following sections:


Tunnel Interface Commands

The commands in this section describe how to create, delete, and manage tunnel interfaces.Several different types of tunnels provide functionality to facilitate the transition of IPv4 networks to IPv6 networks. These tunnels are divided into two classes: configured and automatic. The distinction is that configured tunnels are explicitly configured with a destination or endpoint of the tunnel. Automatic tunnels, in contrast, infer the endpoint of the tunnel from the destination address of packets routed into the tunnel. To assign an IP address to the tunnel interface, see ip address. To assign an IPv6 address to the tunnel interface, see ipv6 address.

interface tunnel

Use this command to enter the Interface Config mode for a tunnel interface. The <tunnel-id> range is 0 to 7.


Format

interface tunnel <tunnel-id>

Mode

Global Config


no interface tunnel

This command removes the tunnel interface and associated configuration parameters for the specified tunnel interface.


Format

no interface tunnel <tunnel-id>

Mode

Global Config


tunnel source

This command specifies the source transport address of the tunnel, either explicitly or by reference to an interface.


Format

tunnel source {<ipv4-address> | <ethernet> <slot/port>}

Mode

Interface Config


tunnel destination

This command specifies the destination transport address of the tunnel.


Format

tunnel destination {<ipv4-address>}

Mode

Interface Config


tunnel mode ipv6ip

This command specifies the mode of the tunnel.


Format

tunnel mode ipv6ip

Mode

Interface Config


show interface tunnel

This command displays the parameters related to tunnel such as tunnel mode, tunnel source address and tunnel destination address.


Format

show interface tunnel [<tunnel-id>]

Mode

Privileged EXEC


If you do not specify a tunnel ID, the command shows the following information for each configured tunnel.


TABLE 5-1 Entry Definitions for show interface tunnel

Entry

Definition

Tunnel ID

Shows the tunnel identification number.

Interface

Shows the name of the tunnel interface.

Tunnel Mode

Shows the tunnel mode.

Source Address

Shows the source transport address of the tunnel.

Destination Address

Shows the destination transport address of the tunnel.

If you specify a tunnel ID, the command shows the following information for the tunnel:

Interface Link Status

Shows whether the link is up or down.

MTU Size

Shows the maximum transmission unit for packets on the interface.

IPv6 Address/ Length

If you enable IPv6 on the interface and assign an address, the IPv6 address and prefix display.



Loopback Interface Commands

The commands in this section describe how to create, delete, and manage loopback interfaces. A loopback interface is always expected to be up. This interface can provide the source address for sent packets and can receive both local and remote packets. The loopback interface is typically used by routing protocols.

To assign an IP address to the loopback interface, see ip address. To assign an IPv6 address to the loopback interface, see ipv6 address.

interface loopback

Use this command to enter the Interface Config mode for a loopback interface. The range of the loopback ID is 0 to 7.


Format

interface loopback <loopback-id>

Mode

Global Config


no interface loopback

This command removes the loopback interface and associated configuration parameters for the specified loopback interface.


Format

no interface loopback <loopback-id>

Mode

Global Config


show interface loopback

This command displays information about configured loopback interfaces.


Format

show interface loopback [<loopback-id>]

Mode

Privileged EXEC


If you do not specify a loopback ID, the following information appears for each loopback interface on the system.


TABLE 5-2 Entry Definitions for show interface loopback

Entry

Definition

Loopback ID

Shows the loopback ID associated with the rest of the information in the row.

Interface

Shows the interface name.

IP Address

Shows the IPv4 address of the interface

Received Packets

Shows the number of packets received on this interface.

Sent Packets

Shows the number of packets transmitted from this interface.

IPv6 Address

Shows the IPv6 address of this interface If you specify a loopback ID, the following information appears:

Interface Link Status

Shows whether the link is up or down.

IP Address

Shows the IPv4 address of the interface.

IPv6 is enabled (disabled)

Show whether IPv6 is enabled on the interface

IPv6 Address/Length is

Shows the IPv6 address of the interface.

MTU size

Shows the maximum transmission size for packets on this interface, in bytes.



IPv6 Routing Commands

This section describes the IPv6 commands you use to configure IPv6 on the system and on the interfaces. This section also describes IPv6 management commands and show commands.

ipv6 forwarding

This command enables IPv6 forwarding on the router


Default

enabled

Format

ipv6 forwarding

Mode

Global Config


no ipv6 forwarding

This command disables ipv6 forwarding on the router.


Format

no ipv6 forwarding

Mode

Global Config


ipv6 unicast-routing

Use this command to enable the forwarding of IPv6 unicast datagrams.


Default

disabled

Format

ipv6 unicast-routing

Mode

Global Config


no ipv6 unicast-routing

Use this command to disable the forwarding of IPv6 unicast datagrams.


Format

no ipv6 unicast-routing

Mode

Global Config


ipv6 enable

Use this command to enable IPv6 routing on an interface, including tunnel and loopback interfaces, that has not been configured with an explicit IPv6 address. When you use this command, the interface is automatically configured with a link-local address. You do not need to use this command if you configured an IPv6 global address on the interface.


Default

disabled

Format

ipv6 enable

Mode

Interface Config


no ipv6 enable

Use this command to disable IPv6 routing on an interface.


Format

no ipv6 enable

Mode

Interface Config


ipv6 address

Use this command to configure an IPv6 address on an interface, including tunnel and loopback interfaces, and to enable IPv6 processing on this interface. You can assign multiple globally reachable addresses to an interface by using this command. You do not need to assign a link-local address by using this command since one is automatically created. The <prefix> field consists of the bits of the address to be configured. The <prefix_length> designates how many of the high-order contiguous bits of the address make up the prefix.

You can express IPv6 addresses in eight blocks. Also of note is that instead of a period, a colon now separates each block. For simplification, leading zeros of each 16 bit block can be omitted. One sequence of 16 bit blocks containing only zeros can be replaced with a double colon "::", but not more than one at a time (otherwise it is no longer a unique representation).

The hexadecimal letters in the IPv6 addresses are not case-sensitive. An example of an IPv6 prefix and prefix length is 3ffe:1::1234/64.

The optional [eui-64] field designates that IPv6 processing on the interfaces was enabled using an EUI-64 interface ID in the low order 64 bits of the address. If you use this option, the value of <prefix_length> must be 64 bits.


Format

ipv6 address <prefix>/<prefix_length> [eui64]

Mode

Interface Config


no ipv6 address

Use this command to remove all IPv6 addresses on an interface or specified IPv6 address. The <prefix> parameter consists of the bits of the address to be configured. The <prefix_length> designates how many of the high-order contiguous bits of the address comprise the prefix.The optional [eui-64] field designates that IPv6 processing on the interfaces was enabled using an EUI-64 interface ID in the low order 64 bits of the address.

If you do not supply any parameters, the command deletes all the IPv6 addresses on an interface.


Format

no ipv6 address [<prefix>/<prefix_length>] [eui64]

Mode

Interface Config


ipv6 route

Use this command to configure an IPv6 static route. The <ipv6-prefix> is the IPv6 network that is the destination of the static route. The <prefix_length> is the length of the IPv6 prefix -- a decimal value (usually 0-64) that shows how many of the high-order contiguous bits of the address comprise the prefix (the network portion of the address). A slash mark must precede the <prefix_length>. The <next-hop-address> is the IPv6 address of the next hop that can be used to reach the specified network. The <preference> parameter is a value the router uses to compare this route with routes from other route sources that have the same destination. The range for <preference> is 1 - 255, and the default value is 1. The interface <slot/port> identifies direct static routes from point-to-point and broadcast interfaces, and must be specified when using a link-local address as the next hop. A route with a preference of 255 cannot be used to forward traffic.


Default

disabled

Format

ipv6 route <ipv6-prefix>/<prefix_length> {<next-hop-address> [<preference>] | interface <slot/port> <next-hop-address> [<preference>]}

Mode

Global Config


no ipv6 route

Use this command to delete an IPv6 static route. Use the command without the optional parameters to delete all static routes to the specified destination. Use the <preference> parameter to revert preference of a route to default preference.


Default

disabled

Format

no ipv6 route <ipv6-prefix>/<prefix_length> [{<next-hop-address> | interface <slot/port> <next-hop-address> | <preference>}]

Mode

Global Config


ipv6 mtu

This command sets the maximum transmission unit (MTU) size, in bytes, of IPv6 packets on an interface. This command replaces the default or link MTU with a new MTU value.



Note - The default MTU value for a tunnel interface is 1480. You cannot change this value.



Default

0 or link speed (MTU value (1500))

Format

ipv6 mtu <1280-1500>

Mode

Interface Config


no ipv6 mtu

This command resets maximum transmission unit value to default value.


Format

no ipv6 mtu

Mode

Interface Config


ipv6 nd dad attempts

This command sets the number of duplicate address detection probes transmitted. Duplicate address detection verifies that an IPv6 address on an interface is unique.


Default

1

Format

ipv6 nd dad attempts <0 - 600>

Mode

Interface Config


no ipv6 nd dad attempts

This command resets to number of duplicate address detection value to default value.


Format

no ipv6 nd dad attempts

Mode

Interface config


ipv6 nd managed-config-flag

This command sets the “managed address configuration” flag in router advertisements. When the value is true, end nodes use DHCPv6. When the value is false, end nodes automatically configure addresses.


Default

false

Format

ipv6 nd managed-config-flag

Mode

Interface Config


no ipv6 nd managed-config-flag

This command resets the “managed address configuration” flag in router advertisements to the default value.


Format

no ipv6 nd managed-config-flag

Mode

Interface Config


ipv6 nd ns-interval

This command sets the interval between router advertisements for advertised neighbor solicitations, in milliseconds. An advertised value of 0 means the interval is unspecified.


Default

0

Format

ipv6 nd ns-interval {<1000-3600000> | 0}

Mode

Interface Config


no ipv6 nd ns-interval

This command resets the neighbor solicit retransmission interval of the specified interface to the default value.


Format

no ipv6 nd ns-interval

Mode

Interface Config


ipv6 nd other-config-flag

This command sets the “other stateful configuration” flag in router advertisements sent from the interface.


Default

false

Format

ipv6 nd other-config-flag

Mode

Interface Config


no ipv6 nd other-config-flag

This command resets the “other stateful configuration” flag back to its default value in router advertisements sent from the interface.


Format

no ipv6 nd other-config-flag

Mode

Interface Config


ipv6 nd ra-interval

This command sets the transmission interval between router advertisements.


Default

600

Format

ipv6 nd ra-interval-max <4- 1800>

Mode

Interface Config


no ipv6 nd ra-interval

This command sets router advertisement interval to the default.


Format

no ipv6 nd ra-interval-max

Mode

Interface Config


ipv6 nd ra-lifetime

This command sets the value, in seconds, that is placed in the Router Lifetime field of the router advertisements sent from the interface. The <lifetime> value must be zero, or it must be an integer between the value of the router advertisement transmission interval and 9000. A value of zero means this router is not to be used as the default router.


Default

1800

Format

ipv6 nd ra-lifetime <lifetime>

Mode

Interface Config


no ipv6 nd ra-lifetime

This command resets router lifetime to the default value.


Format

no ipv6 nd ra-lifetime

Mode

Interface config


ipv6 nd reachable-time

This command sets the router advertisement time to consider a neighbor reachable after neighbor discovery confirmation. Reachable time is specified in milliseconds. A value of zero means the time is unspecified by the router.


Default

0

Format

ipv6 nd reachable-time <0-4294967295>

Mode

Interface Config


no ipv6 nd reachable-time

This command means reachable time is unspecified for the router.


Format

no ipv6 nd reachable-time

Mode

Interface Config


ipv6 nd suppress-ra

This command suppresses router advertisement transmission on an interface.


Default

disabled

Format

ipv6 nd suppress-ra

Mode

Interface Config


no ipv6 nd suppress-ra

This command enables router transmission on an interface


Format

no ipv6 nd suppress-ra

Mode

Interface Config


ipv6 nd prefix

This command sets the IPv6 prefixes to include in the router advertisement. The first optional parameter is the valid lifetime of the router, in seconds. You can specify a value or indicate that the lifetime value is infinite. The second optional parameter is the preferred lifetime of the router.


Default

valid-lifetime--604800
preferred-lifetime--2592000
autoconfig--enabled
on-link--enabled

Format

ipv6 nd prefix <prefix/prefix_length> [{<0-4294967295> | infinite} {<0-4294967295> | infinite}] [no-autoconfig off-link]

Mode

Interface Config


ping ipv6

 

Use this command to determine whether another computer is on the network. To use the command, configure the switch for network (in-band) connection. The source and target devices must have the ping utility enabled and running on top of TCP/IP. The switch can be pinged from any IP workstation with which the switch is connected through the default VLAN (VLAN 1), as long as there is a physical path between the switch and the workstation. The terminal interface sends three pings to the target station. Use the <ipv6-address> parameter to ping an interface by using the global IPv6 address of the interface. Use the optional size keyword to specify the size of the ping packet.


Format

ping ipv6 <ipv6-address> [size <datagram-size>]

Mode

Privileged EXEC
User Exec


ping ipv6 interface

 

Use this command to determine whether another computer is on the network. To use the command, configure the switch for network (in-band) connection. The source and target devices must have the ping utility enabled and running on top of TCP/IP. The switch can be pinged from any IP workstation with which the switch is connected through the default VLAN (VLAN 1), as long as there is a physical path between the switch and the workstation. The terminal interface sends three pings to the target station. Use the interface keyword to ping an interface by using the link-local address or the global IPv6 address of the interface. You can use a loopback, tunnel, or logical interface as the source. Use the optional size keyword to specify the size of the ping packet. The <ipv6-address> is the IPv6 address of the device you want to query.


Format

ping ipv6 interface {<slot/port> | tunnel <tunnel-id>} | loopback <loopback-id>} {link-local-address <link-local-address> | <ipv6-address>} [size <datagram-size>]

Mode

Privileged EXEC
User Exec


traceroute ipv6

Use this command to discover the routes that packets actually take when traveling to their destination through the network on a hop-by-hop basis. The <ipv6-address> parameter must be a valid IPv6 address. The optional <port> parameter is the UDP port used as the destination of packets sent as part of the traceroute. This port should be an unused port on the destination system. The range for <port> is 0 (zero) to 65535.The default value is 33434.


Format

traceroute ipv6 <ipv6-address> [<port>]

Mode

Privileged EXEC


show ipv6 brief

Use this command to display the IPv6 status of forwarding mode and IPv6 unicast routing mode.


Format

show ipv6 brief

Mode

Privileged EXEC



TABLE 5-3

Entry

Definition

IPv6 Forwarding Mode

Shows whether the IPv6 forwarding mode is enabled.

IPv6 Unicast Routing Mode

Shows whether the IPv6 unicast routing mode is enabled.


show ipv6 interface

Use this command to show the usability status of IPv6 interfaces.


Format

show ipv6 interface {brief | <slot/port>}

Mode

Privileged EXEC


If you use the brief parameter, the following information displays for all configured IPv6 interfaces.


TABLE 5-4 Entry Definitions for show ipv6 interface

Entry

Definition

Interface

Shows the interface in slot/port format.

IPv6 Routing Operational Mode

Shows whether the mode is enabled or disabled.

IPv6 Address/Length

Shows the IPv6 address and length on interfaces with IPv6 enabled.

If you specify an interface, the following information also appears.

IPv6 is enabled

Appears if IPv6 is enabled on the interface.

Routing Mode

Shows whether IPv6 routing is enabled or disabled.

Administrative Mode

Shows whether the interface administrative mode is enabled or disabled.

Interface Maximum Transmission Unit

Shows the MTU size, in bytes.

Router Duplicate Address Detection Transmits

Shows the number of consecutive duplicate address detection probes to transmit.

Router Advertisement NS Interval

Shows the interval, in milliseconds, between router advertisements for advertised neighbor solicitations.

Router Lifetime Interval

Shows the router lifetime value of the interface in router advertisements.

Router Advertisement Reachable Time

Shows the amount of time, in milliseconds, to consider a neighbor reachable after neighbor discovery confirmation.

Router Advertisement Interval

Shows the frequency, in seconds, that router advertisements are sent.

Router Advertisement Managed Config Flag

Shows whether the managed configuration flag is set (enabled) for router advertisements on this interface.

Router Advertisement Other Config Flag

Shows whether the other configuration flag is set (enabled) for router advertisements on this interface.

Router Advertisement Suppress Flag

Shows whether router advertisements are suppressed (enabled) or sent (disabled). If an IPv6 prefix is configured on the interface, the following information also appears.

IFPv6 Prefix is

Shows the IPv6 prefix for the specified interface.

Preferred Lifetime

Shows the amount of time the advertised prefix is a preferred prefix.

Valid Lifetime

Shows the amount of time the advertised prefix is valid.

Onlink Flag

Shows whether the onlink flag is set (enabled) in the prefix.

Autonomous Flag

Shows whether the autonomous address-configuration flag (autoconfig) is set (enabled) in the prefix.


show ipv6 neighbor

Use this command to display information about the IPv6 neighbors.


Format

show ipv6 neighbor

Mode

Privileged EXEC



TABLE 5-5 Entry Definitions for show ipv6 neighbor

Entry

Definition

Interface

Shows the interface in slot/port format.

IPv6 Address

IPV6 address of neighbor or interface

MAC Address

Link-layer Address

IsRtr

Shows whether the neighbor is a router. If the value is TRUE, the neighbor is known to be a router, and FALSE otherwise. A value of FALSE might not mean Note that routers are not always known to be routers.

Neighbor State

State of neighbor cache entry. Possible values are Incomplete, Reachable, Stale, Delay, Probe, and Unknown.

Last Updated

Shows the system uptime when the information for the neighbor was last updated.


clear ipv6 neighbors

Use this command to clear all entries IPv6 neighbor table or an entry on a specific interface. Use the <slot/port> parameter to specify the interface.


Format

clear ipv6 neighbors [<slot/port>]

Mode

Privileged EXEC


show ipv6 route

This command displays the IPv6 routing table.



Note - If you use the connected keyword for <protocol>, the all option is not available because there are no best or non-best connected routes.



Format

show ipv6 route [{<ipv6-address> [<protocol>] | {{<ipv6-prefix/ipv6-prefix-length> | <unit/slot/port>} [<protocol>] | <protocol> | summary} [all] | all}]

Modes

Privileged EXEC
User EXEC

Route Codes

Displays the key for the routing protocol codes that might appear in the routing table output.


The show ipv6 route command displays the routing tables in the following format:


Codes: C - connected, S - static
       O - OSPF Intra, OI - OSPF Inter, OE1 - OSPF Ext 1, OE2 - OSPF Ext 2
       ON1 - OSPF NSSA Ext Type 1, ON2 - OSPF NSSA Ext Type 2

The columns for the routing table display the following information.


TABLE 5-6 Entry Definitions for show ipv6 route

Entry

Definition

Code

The code for the routing protocol that created this routing entry.

IPv6-Prefix/ IPv6-Prefix-Length

The IPv6-Prefix and prefix-length of the destination IPv6 network corresponding to this route.

Preference/ Metric

The administrative distance (preference) and cost (metric) associated with this route. An example of this output is [1/0], where 1 is the preference and 0 is the metric.

Tag

Displays the decimal value of the tag associated with a redistributed route, if it is not 0.

Next-Hop

The outgoing router IPv6 address to use when forwarding traffic to the next router (if any) in the path toward the destination

Interface

The outgoing router interface to use when forwarding traffic to the next destnation.


show ipv6 route preferences

Use this command to show the preference value associated with the type of route. Lower numbers have a greater preference. A route with a preference of 255 cannot be used to forward traffic.


Format

show ipv6 route preferences

Mode

Privileged EXEC



TABLE 5-7 Entry Definitions for show ipv6 route preferences

Entry

Definition

Local

Preference of directly-connected routes.

Static

Preference of static routes.

OSPF Intra

Preference of routes within the OSPF area.

OSPF Inter

Preference of routes to other OSPF routes that are outside of the area.

OSPF Ext T1

Preference of OSPF Type-1 external routes.

OSPF Ext T2

Preference of OSPF Type-2 external routes.

OSPF NSSA T1

Preference of OSPF NSSA Type 1 routes.

OSPF NSSA T2

Preference of OSPF NSSA Type 1 routes.




Note - The configuration of NSSA preferences is not supported in this release.


show ipv6 route summary

This command displays the summary of the routing table. Use all to display the count summary for all routes, including best and non-best routes. Use the command without parameters to display the count summary for only the best routes.


Format

show ipv6 route summary [all]

Modes

Privileged EXEC
User EXEC



TABLE 5-8 Entry Definitions for show ipv6 route summary

Entry

Definition

Connected Routes

Total number of connected routes in the routing table.

Static Routes

Total number of static routes in the routing table.

OSPF Routes

Total number of routes installed by OSPFv3 protocol.

Number of Prefixes

Summarizes the number of routes with prefixes of different lengths

Total Routes

Shows the total number of routes in the routing table.


show ipv6 vlan

This command displays IPv6 VLAN routing interface addresses.


Format

show ipv6 vlan

Modes

Privileged EXEC
User EXEC



TABLE 5-9 Entry Definitions for show ipv6 vlan

Entry

Definition

MAC Address used by Routing VLANs

Shows the MAC address.

VLAN ID

Shows the VLAN ID of a configured VLAN.

Logical Interface

Shows the interface in slot/port format that is associated with the VLAN ID.

IPv6 Address/Prefix Length

Shows the IPv6 prefix and prefix length associated with the VLAN ID.


show ipv6 traffic

Use this command to show traffic and statistics for IPv6 and ICMPv6. Specify a logical, loopback, or tunnel interface to view information about traffic on a specific interface. If you do not specify an interface, the command displays information about traffic on all interfaces.


Format

show ipv6 traffic [{<slot/port> | loopback <loopback-id> | tunnel <tunnel-id>}]

Mode

Privileged EXEC



TABLE 5-10 Entry Definitions for show ipv6 traffic

Entry

Definition

Total Datagrams Received

Total number of input datagrams received by the interface, including those received in error.

Received Datagrams Locally Delivered

Total number of datagrams successfully delivered to IPv6 user-protocols (including ICMP). This counter increments at the interface to which these datagrams were addressed, which might not necessarily be the input interface for some of the datagrams.

Received Datagrams Discarded Due To Header Errors

Number of input datagrams discarded due to errors in their IPv6 headers, including version number mismatch, other format errors, hop count exceeded, errors discovered in processing their IPv6 options, etc.

Received Datagrams Discarded Due To MTU

Number of input datagrams that could not be forwarded because their size exceeded the link MTU of outgoing interface.

Received Datagrams Discarded Due To No Route

Number of input datagrams discarded because no route could be found to transmit them to their destination.

Received Datagrams With Unknown Protocol

Number of locally-addressed datagrams received successfully but discarded because of an unknown or unsupported protocol. This counter increments at the interface to which these datagrams were addressed, which might not be necessarily the input interface for some of the datagrams.

Received Datagrams Discarded Due To Invalid Address

Number of input datagrams discarded because the IPv6 address in their IPv6 header's destination field was not a valid address to be received at this entity. This count includes invalid addresses (for example, ::0) and unsupported addresses (for example, addresses with unallocated prefixes). For entities which are not IPv6 routers and therefore do not forward datagrams, this counter includes datagrams discarded because the destination address was not a local address.

Received Datagrams Discarded Due To Truncated Data

Number of input datagrams discarded because datagram frame didn't carry enough data.

Received Datagrams Discarded Other

Number of input IPv6 datagrams for which no problems were encountered to prevent their continue processing, but which were discarded (e.g., for lack of buffer space). Note that this counter does not include datagrams discarded while awaiting re-assembly.

Received Datagrams Reassembly Required

Number of IPv6 fragments received which needed to be reassembled at this interface. Note that this counter increments at the interface to which these fragments were addressed, which might not be necessarily the input interface for some of the fragments.

Datagrams Successfully Reassembled

Number of IPv6 datagrams successfully reassembled. Note that this counter increments at the interface to which these datagrams were addressed, which might not be necessarily the input interface for some of the fragments.

Datagrams Failed To Reassemble

Number of failures detected by the IPv6 reassembly algorithm (for whatever reason: timed out, errors, etc.). Note that this is not necessarily a count of discarded IPv6 fragments since some algorithms (notably the algorithm in by combining them as they are received. This counter increments at the interface to which these fragments were addressed, which might not be necessarily the input interface for some of the fragments.

Datagrams Forwarded

Number of output datagrams which this entity received and forwarded to their final destinations. In entities which do not act as IPv6 routers, this counter will include only those packets which were Source-Routed via this entity, and the Source-Route processing was successful. Note that for a successfully forwarded datagram the counter of the outgoing interface increments.

Datagrams Locally Transmitted

Total number of IPv6 datagrams which local IPv6 user-protocols (including ICMP) supplied to IPv6 in requests for transmission. Note that this counter does not include any datagrams counted in ipv6IfStatsOutForwDatagrams.

Datagrams Transmit Failed

Number of output IPv6 datagrams for which no problem was encountered to prevent their transmission to their destination, but which were discarded (e.g., for lack of buffer space). Note that this counter would include datagrams counted in ipv6IfStatsOutForwDatagrams if any such packets met this (discretionary) discard criterion.

Fragments Created

Number of output datagram fragments that have been generated as a result of fragmentation at this output interface.

Datagrams Successfully Fragmented

Number of IPv6 datagrams that have been successfully fragmented at this output interface.

Datagrams Failed To Fragment

Number of IPv6 datagrams that have been discarded because they needed to be fragmented at this output interface but could not be.

Multicast Datagrams Received

Number of multicast packets received by the interface.

Multicast Datagrams Transmitted

Number of multicast packets transmitted by the interface.

Total ICMPv6 messages received

Total number of ICMP messages received by the interface which includes all those counted by ipv6IfIcmpInErrors. Note that this interface is the interface to which the ICMP messages were addressed which may not be necessarily the input interface for the messages.

ICMPv6 Messages with errors

Number of ICMP messages which the interface received but determined as having ICMP-specific errors (bad ICMP checksums, bad length, etc.).

ICMPv6 Destination Unreachable Messages

Number of ICMP Destination Unreachable messages received by the interface.

ICMPv6 Messages Prohibited Administratively

Number of ICMP destination unreachable/communication administratively prohibited messages received by the interface.

ICMPv6 Time Exceeded Messages

Number of ICMP Time Exceeded messages received by the interface.

ICMPv6 Parameter Problem Messages

Number of ICMP Parameter Problem messages received by the interface.

ICMPv6 messages with too big packets

Number of ICMP Packet Too Big messages received by the interface.

ICMPv6 Echo Request Messages Received

Number of ICMP Echo (request) messages received by the interface.

ICMPv6 Echo Reply Messages Received

Number of ICMP Echo Reply messages received by the interface.

ICMPv6 Router Solicit Messages Received

Number of ICMP Router Solicit messages received by the interface.

ICMPv6 Router Advertisement Messages Received

Number of ICMP Router Advertisement messages received by the interface.

ICMPv6 Neighbor Solicit Messages Received

Number of ICMP Neighbor Solicit messages received by the interface.

ICMPv6 Neighbor Advertisement Messages Received

Number of ICMP Neighbor Advertisement messages received by the interface.

ICMPv6 Redirect Messages Received

Number of Redirect messages received by the interface.

Transmitted

Number of ICMPv6 Group Membership Query messages received by the interface.

Total ICMPv6 Messages Transmitted

Total number of ICMP messages which this interface attempted to send. Note that this counter includes all those counted by icmpOutErrors.

ICMPv6 Messages Not Transmitted Due To Error

Number of ICMP messages which this interface did not send due to problems discovered within ICMP such as a lack of buffers. This value should not include errors discovered outside the ICMP layer such as the inability of IPv6 to route the resultant datagram. In some implementations there may be no types of error which contribute to this counter's value.

ICMPv6 Destination Unreachable Messages Transmitted

Number of ICMP Destination Unreachable messages sent by the interface.

ICMPv6 Messages Prohibited Administratively Transmitted

Number of ICMP destination unreachable/communication administratively prohibited messages sent.

ICMPv6 Time Exceeded Messages Transmitted

Number of ICMP Time Exceeded messages sent by the interface.

ICMPv6 Parameter Problem Messages Transmitted

Number of ICMP Parameter Problem messages sent by the interface.

ICMPv6 Packet Too Big Messages Transmitted

Number of ICMP Packet Too Big messages sent by the interface.

ICMPv6 Echo Request Messages Transmitted

Number of ICMP Echo (request) messages sent by the interface.ICMP echo messages sent

ICMPv6 Echo Reply Messages Transmitted

Number of ICMP Echo Reply messages sent by the interface.

ICMPv6 Router Solicit Messages Transmitted

Number of ICMP Router Solicitation messages sent by the interface.

ICMPv6 Router Advertisement Messages Transmitted

Number of ICMP Router Advertisement messages sent by the interface.

ICMPv6 Neighbor Solicit Messages Transmitted

Number of ICMP Neighbor Solicitation messages sent by the interface.

ICMPv6 Neighbor Advertisement Messages Transmitted

Number of ICMP Neighbor Advertisement messages sent by the interface.

ICMPv6 Redirect Messages Received

Number of Redirect messages sent. For a host, this object will always be zero, since hosts do not send redirects.

ICMPv6 Group Membership Query Messages Received

Number of ICMPv6 Group Membership Query messages sent.

ICMPv6 Group Membership Response Messages Received

Number of ICMPv6 group Membership Response messages sent.

ICMPv6 Group Membership Reduction Messages Received

Number of ICMPv6 Group Membership Reduction messages sent.

ICMPv6 Duplicate Address Detects

Number of duplicate addresses detected by the interface


clear ipv6 statistics

Use this command to clear IPv6 statistics for all interfaces or for a specific interface, including loopback and tunnel interfaces. IPv6 statistics display in the output of the show ipv6 traffic command. If you do not specify an interface, the counters for all IPv6 traffic statistics reset to zero.


Format

clear ipv6 statistics [{<slot/port> | loopback <loopback-id> | tunnel <tunnel-id>}]

Mode

Privileged EXEC



OSPFv3 Commands

This section describes the commands you use to configure OSPFv3, which is a link-state routing protocol that you use to route traffic within a network.

ipv6 ospf

This command enables OSPF on a router interface or loopback interface.


Default

disabled

Format

ipv6 ospf

Mode

Interface Config


no ipv6 ospf

This command disables OSPF on a router interface or loopback interface.


Format

no ipv6 ospf

Mode

Interface Config


ipv6 ospf areaid

This command sets the OSPF area to which the specified router interface belongs. The <areaid> is an IPv6 address, formatted as a 4-digit dotted-decimal number or a decimal value in the range of <0-4294967295>. The <areaid> uniquely identifies the area to which the interface connects. Assigning an area id, which does not exist on an interface, causes the area to be created with default values.


Format

ipv6 ospf areaid <areaid>

Mode

Interface Config


ipv6 ospf cost

This command configures the cost on an OSPF interface. The <cost> parameter has a range of 1 to 65535.


Default

10

Format

ipv6 ospf cost <1-65535>

Mode

Interface Config


no ipv6 ospf cost

This command configures the default cost on an OSPF interface.


Format

no ipv6 ospf cost

Mode

Interface Config


ipv6 ospf dead-interval

This command sets the OSPF dead interval for the specified interface. The value for <seconds> is a valid positive integer, which represents the length of time in seconds that a router's Hello packets have not been seen before its neighbor routers declare that the router is down. The value for the length of time must be the same for all routers attached to a common network. This value should be some multiple of the Hello Interval (i.e. 4). Valid values range for <seconds> is from 1 to 2147483647.


Default

40

Format

ipv6 ospf dead-interval <seconds>

Mode

Interface Config


no ipv6 ospf dead-interval

This command sets the default OSPF dead interval for the specified interface.


Format

no ipv6 ospf dead-interval

Mode

Interface Config


ipv6 ospf hello-interval

This command sets the OSPF hello interval for the specified interface. The value for <seconds> is a valid positive integer, which represents the length of time in seconds. The value for the length of time must be the same for all routers attached to a network.

Valid values for <seconds> range from 1 to 65535.


Default

10

Format

ipv6 ospf hello-interval <seconds>

Mode

Interface Config


no ipv6 ospf hello-interval

This command sets the default OSPF hello interval for the specified interface.


Format

no ipv6 ospf hello-interval

Mode

Interface Config


ipv6 ospf mtu-ignore

This command disables OSPF maximum transmission unit (MTU) mismatch detection. OSPF Database Description packets specify the size of the largest IP packet that can be sent without fragmentation on the interface. When a router receives a Database Description packet, it examines the MTU advertised by the neighbor. By default, if the MTU is larger than the router can accept, the Database Description packet is rejected and the OSPF adjacency is not established.


Default

enabled

Format

ipv6 ospf mtu-ignore

Mode

Interface Config


no ipv6 ospf mtu-ignore

This command enables the OSPF MTU mismatch detection.


Format

no ipv6 ospf mtu-ignore

Mode

Interface Config


ipv6 ospf network

This command changes the default OSPF network type for the interface. Normally, the network type is determined from the physical IP network type. By default all Ethernet networks are OSPF type broadcast. Similarly, tunnel interfaces default to point-to-point. When an Ethernet port is used as a single large bandwidth IP network between two routers, the network type can be point-to-point since there are only two routers. Using point-to-point as the network type eliminates the overhead of the OSPF designated router election. It is normally not useful to set a tunnel to OSPF network type broadcast.


Default

broadcast

Format

ipv6 ospf network {broadcast | point-to-point}

Mode

Interface Config


no ipv6 ospf network

This command sets the interface type to the default value.


Format

ipv6 ospf network {broadcast | point-to-point}

Mode

Interface Config


ipv6 ospf priority

This command sets the OSPF priority for the specified router interface. The priority of the interface is a priority integer from 0 to 255. A value of 0 indicates that the router is not eligible to become the designated router on this network.


Default

1, which is the highest router priority

Format

ipv6 ospf priority <0-255>

Mode

Interface Config


no ipv6 ospf priority

This command sets the default OSPF priority for the specified router interface.


Format

no ipv6 ospf priority

Mode

Interface Config


ipv6 ospf retransmit-interval

This command sets the OSPF retransmit Interval for the specified interface. The retransmit interval is specified in seconds. The value for <seconds> is the number of seconds between link-state advertisement retransmissions for adjacencies belonging to this router interface. This value is also used when retransmitting database description and link-state request packets. Valid values range from 0 to 3600 (1 hour).


Default

5

Format

ipv6 ospf retransmit-interval <seconds>

Mode

Interface Config


no ipv6 ospf retransmit-interval

This command sets the default OSPF retransmit Interval for the specified interface.


Format

no ipv6 ospf retransmit-interval

Mode

Interface Config


ipv6 ospf transmit-delay

This command sets the OSPF Transit Delay for the specified interface. The transmit delay is specified in seconds. In addition, it sets the estimated number of seconds it takes to transmit a link state update packet over this interface. Valid values for <seconds> range from 1 to 3600 (1 hour).


Default

1

Format

ipv6 ospf transmit-delay <seconds>

Mode

Interface Config


no ipv6 ospf transmit-delay

This command sets the default OSPF Transit Delay for the specified interface.


Format

no ipv6 ospf transmit-delay

Mode

Interface Config


ipv6 router ospf

Use this command to enter Router OSPFv3 Config mode.


Format

router ospf

Mode

Global Config


area default-cost (OSPFv3)

This command configures the monetary default cost for the stub area. The operator must specify the area id and an integer value between 1-16777215.


Format

area <areaid> default-cost <1-16777215>

Mode

Router OSPFv3 Config


area nssa (OSPFv3)

This command configures the specified areaid to function as an NSSA.


Format

area <areaid> nssa

Mode

Router OSPFv3 Config


no area nssa

This command disables nssa from the specified area id.


Format

no area <areaid> nssa

Mode

Router OSPFv3 Config


area nssa default-info-originate (OSPFv3)

This command configures the metric value and type for the default route advertised into the NSSA. The optional metric parameter specifies the metric of the default route and is to be in a range of 1-16777214. If no metric is specified, the default value is 10. The metric type can be comparable (nssa-external 1) or non-comparable (nssa-external 2).


Format

area <areaid> nssa default-info-originate [<metric>] [{comparable | non-comparable}]

Mode

Router OSPFv3 Config


area nssa no-redistribute (OSPFv3)

This command configures the NSSA ABR so that learned external routes will not be redistributed to the NSSA.


Format

area <areaid> nssa no-redistribute

Mode

Router OSPFv3 Config


area nssa no-summary (OSPFv3)

This command configures the NSSA so that summary LSAs are not advertised into the NSSA.


Format

area <areaid> nssa no-summary

Mode

Router OSPFv3 Config


area nssa translator-role (OSPFv3)

This command configures the translator role of the NSSA. A value of always causes the router to assume the role of the translator the instant it becomes a border router and a value of candidate causes the router to participate in the translator election process when it attains border router status.


Format

area <areaid> nssa translator-role {always | candidate}

Mode

Router OSPFv3 Config


area nssa translator-stab-intv (OSPFv3)

This command configures the translator <stabilityinterval> of the NSSA. The <stabilityinterval> is the period of time that an elected translator continues to perform its duties after it determines that its translator status has been deposed by another router.


Format

area <areaid> nssa translator-stab-intv <stabilityinterval>

Mode

Router OSPFv3 Config


area range (OSPFv3)

This command creates a specified area range for a specified NSSA. The <ipaddr> is a valid IP address. The <subnetmask> is a valid subnet mask. The LSDB type must be specified by either summarylink or nssaexternallink, and the advertising of the area range can be allowed or suppressed.


Format

area <areaid> range <ipv6-prefix> <prefix-length> {summarylink | nssaexternallink} [advertise | not-advertise]

Mode

Router OSPFv3 Config


no area range

This command deletes a specified area range. The <ipaddr> is a valid IP address. The <subnetmask> is a valid subnet mask.


Format

no area <areaid> range <ipv6-prefix> <prefix-length>

Mode

Router OSPFv3 Config


area stub (OSPFv3)

This command creates a stub area for the specified area ID. A stub area is characterized by the fact that AS External LSAs are not propagated into the area. Removing AS External LSAs and Summary LSAs can significantly reduce the link state database of routers within the stub area.


Format

area <areaid> stub

Mode

Router OSPFv3 Config


no area stub

This command deletes a stub area for the specified area ID.


Format

no area <areaid> stub

Mode

Router OSPFv3 Config


area stub no-summary (OSPFv3)

This command disables the import of Summary LSAs for the stub area identified by <areaid>.


Default

enabled

Format

area <areaid> stub no-summary

Mode

Router OSPFv3 Config


no area stub no-summary

This command sets the Summary LSA import mode to the default for the stub area identified by <areaid>.


Format

no area <areaid> stub summarylsa

Mode

Router OSPFv3 Config


area virtual-link (OSPFv3)

This command creates the OSPF virtual interface for the specified <areaid> and <neighbor>. The <neighbor> parameter is the Router ID of the neighbor.


Format

area <areaid> virtual-link <neighbor>

Mode

Router OSPFv3 Config


no area virtual-link

This command deletes the OSPF virtual interface from the given interface, identified by <areaid> and <neighbor>. The <neighbor> parameter is the Router ID of the neighbor.


Format

no area <areaid> virtual-link <neighbor>

Mode

Router OSPFv3 Config


area virtual-link dead-interval (OSPFv3)

This command configures the dead interval for the OSPF virtual interface on the virtual interface identified by <areaid> and <neighbor>. The <neighbor> parameter is the Router ID of the neighbor. The range for <seconds> is 1 to 65535.


Default

40

Format

area <areaid> virtual-link <neighbor> dead-interval <seconds>

Mode

Router OSPFv3 Config


no area virtual-link dead-interval

This command configures the default dead interval for the OSPF virtual interface on the virtual interface identified by <areaid> and <neighbor>. The <neighbor> parameter is the Router ID of the neighbor.


Format

no area <areaid> virtual-link <neighbor> dead-interval

Mode

Router OSPFv3 Config


area virtual-link hello-interval (OSPFv3)

This command configures the hello interval for the OSPF virtual interface on the virtual interface identified by <areaid> and <neighbor>. The <neighbor> parameter is the Router ID of the neighbor. The range for <seconds> is 1 to 65535.


Default

10

Format

area <areaid> virtual-link <neighbor> hello-interval <seconds>

Mode

Router OSPFv3 Config


no area virtual-link hello-interval

This command configures the default hello interval for the OSPF virtual interface on the virtual interface identified by <areaid> and <neighbor>. The <neighbor> parameter is the Router ID of the neighbor.


Format

no area <areaid> virtual-link <neighbor> hello-interval

Mode

Router OSPFv3 Config


area virtual-link retransmit-interval (OSPFv3)

This command configures the retransmit interval for the OSPF virtual interface on the virtual interface identified by <areaid> and <neighbor>. The <neighbor> parameter is the Router ID of the neighbor. The range for <seconds> is 0 to 3600.


Default

5

Format

area <areaid> virtual-link <neighbor> retransmit-interval <seconds>

Mode

Router OSPFv3 Config


no area virtual-link retransmit-interval

This command configures the default retransmit interval for the OSPF virtual interface on the virtual interface identified by <areaid> and <neighbor>. The <neighbor> parameter is the Router ID of the neighbor.


Format

no area <areaid> virtual-link <neighbor> retransmit-interval

Mode

Router OSPFv3 Config


area virtual-link transmit-delay (OSPFv3)

This command configures the transmit delay for the OSPF virtual interface on the virtual interface identified by <areaid> and <neighbor>. The <neighbor> parameter is the Router ID of the neighbor. The range for <seconds> is 0 to 3600 (1 hour).


Default

1

Format

area <areaid> virtual-link <neighbor> transmit-delay <seconds>

Mode

Router OSPFv3 Config


no area virtual-link transmit-delay

This command configures the default transmit delay for the OSPF virtual interface on the virtual interface identified by <areaid> and <neighbor>. The <neighbor> parameter is the Router ID of the neighbor.


Format

no area <areaid> virtual-link <neighbor> transmit-delay

Mode

Router OSPFv3 Config


default-information originate (OSPFv3)

This command is used to control the advertisement of default routes.


Default

metric--unspecified
type--2

Format

default-information originate [always] [metric <0-16777214>] [metric-type {1 | 2}]

Mode

Router OSPFv3 Config


no default-information originate (OSPFv3)

This command is used to control the advertisement of default routes.


Format

no default-information originate [metric] [metric-type]

Mode

Router OSPFv3 Config


default-metric (OSPFv3)

This command is used to set a default for the metric of distributed routes.


Format

default-metric <1-16777214>

Mode

Router OSPFv3 Config


no default-metric (OSPFv3)

This command is used to set a default for the metric of distributed routes.


Format

no default-metric

Mode

Router OSPFv3 Config


distance ospf (OSPFv3)

This command sets the route preference value of OSPF in the router. Lower route preference values are preferred when determining the best route. The type of OSPF route can be intra, inter, type-1, or type-2. The OSPF specification (RFC 2328) requires that preferences must be given to the routes learned via OSPF in the following order: intra < inter < type-1 < type-2. The <preference> range is 1 to 255. A route with a preference of 255 cannot be used to forward traffic.


Default

intra--8
inter--10
type-1--13
type-2--50

Format

distance ospf {intra | inter | type1 | type2} <preference>

Mode

Router OSPFv3 Config


no distance ospf

This command sets the default route preference value of OSPF in the router. The type of OSPF route can be intra, inter, type-1, or type-2.


Format

no distance ospf {intra | inter | type1 | type2}

Mode

Router OSPFv3 Config


enable (OSPFv3)

This command resets the default administrative mode of OSPF in the router (active).


Default

enabled

Format

enable

Mode

Router OSPFv3 Config


no enable (OSPFv3)

This command sets the administrative mode of OSPF in the router to inactive.


Format

no enable

Mode

Router OSPFv3 Config


exit-overflow-interval (OSPFv3)

This command configures the exit overflow interval for OSPF. It describes the number of seconds after entering Overflow state that a router will wait before attempting to leave the Overflow State. This allows the router to again originate non-default AS-external-LSAs. When set to 0, the router will not leave Overflow State until restarted. The range for <seconds> is 0 to 2147483647 seconds.


Default

0

Format

exit-overflow-interval <seconds>

Mode

Router OSPFv3 Config


no exit-overflow-interval

This command configures the default exit overflow interval for OSPF.


Format

no exit-overflow-interval

Mode

Router OSPFv3 Config


external-lsdb-limit (OSPFv3)

This command configures the external LSDB limit for OSPF. If the value is -1, then there is no limit. When the number of non-default AS-external-LSAs in a router's link-state database reaches the external LSDB limit, the router enters overflow state. The router never holds more than the external LSDB limit non-default AS-external-LSAs in it database. The external LSDB limit MUST be set identically in all routers attached to the OSPF backbone and/or any regular OSPF area. The range for <limit> is -1 to 2147483647.


Default

-1

Format

external-lsdb-limit <limit>

Mode

Router OSPFv3 Config


no external-lsdb-limit

This command configures the default external LSDB limit for OSPF.


Format

no external-lsdb-limit

Mode

Router OSPFv3 Config


maximum-paths (OSPFv3)

This command sets the number of paths that OSPF can report for a given destination where maxpaths is platform dependent.


Default

4

Format

maximum-paths <maxpaths>

Mode

Router OSPFv3 Config


no maximum-paths

This command resets the number of paths that OSPF can report for a given destination back to its default value.


Format

no maximum-paths

Mode

Router OSPFv3 Config


redistribute (OSPFv3)

This command configures the OSPFv3 protocol to allow redistribution of routes from the specified source protocol/routers.


Default

metric--unspecified
type--2
tag--0

Format

redistribute {static | connected} [metric <0-16777214>] [metric-type {1 | 2}] [tag <0-4294967295>]

Mode

Router OSPFv3 Config


no redistribute

This command configures OSPF protocol to prohibit redistribution of routes from the specified source protocol/routers.


Format

no redistribute {static | connected} [metric] [metric-type] [tag]

Mode

Router OSPFv3 Config


router-id (OSPFv3)

This command sets a 4-digit dotted-decimal number uniquely identifying the router ospf id. The <ipaddress> is a configured value.


Format

router-id <ipaddress>

Mode

Router OSPFv3 Config


trapflags

This command enables OSPF traps.


Default

enabled

Format

trapflags

Mode

Router OSPFv3 Config


no trapflags

This command disables OSPF traps.


Format

no trapflags

Mode

Router OSPFv3 Config


show ipv6 ospf

This command displays information relevant to the OSPF router.


Format

show ipv6 ospf

Mode

Privileged EXEC




Note - Some of the information below displays only if you enable OSPF and configure certain features.



TABLE 5-11 Entry Definitions for show ipv6 ospf

Entry

Definition

Router ID

Is a 32 bit integer in dotted decimal format identifying the router, about which information is displayed. This is a configured value.

OSPF Admin Mode

Shows whether the administrative mode of OSPF in the router is enabled or disabled. This is a configured value.

ASBR Mode

Reflects whether the ASBR mode is enabled or disabled. Enable implies that the router is an autonomous system border router. Router automatically becomes an ASBR when it is configured to redistribute routes learned from other protocol. The possible values for the ASBR status is enabled (if the router is configured to re-distribute routes learnt by other protocols) or disabled (if the router is not configured for the same).

ABR Status

Shows whether the router is an OSPF Area Border Router.

Exit Overflow Interval

Shows the number of seconds that, after entering Overflow State, a router will attempt to leave Overflow State.

External LSA Count

Shows the number of external (LS type 5) link-state advertisements in the link-state database.

External LSA Checksum

Shows the sum of the LS checksums of external link-state advertisements contained in the link-state database.

New LSAs Originated

Shows the number of new link-state advertisements that have been originated.

LSAs Received

Shows the number of link-state advertisements received determined to be new instantiations.

External LSDB Limit

Shows the maximum number of non-default AS-external-LSAs entries that can be stored in the link-state database.

Default Metric

Default value for redistributed routes.

Default Route Advertise

Indicates whether the default routes received from other source protocols are advertised or not

Always

Shows whether default routes are always advertised.

Metric

Shows the metric for the advertised default routes. If the metric is not configured, this field is blank.

Metric Type

Shows whether the routes are External Type 1 or External Type 2.

Maximum Paths

Shows the maximum number of paths that OSPF can report for a given destination.

Redistributing

This field is a heading and appears only if you configure the system to take routes learned from a non-OSPF source and advertise them to its peers.

Source

Shows source protocol/routes that are being redistributed. Possible values are static, connected, BGP, or RIP.

Metric

Shows the metric of the routes being redistributed.

Metric Type

Shows whether the routes are External Type 1 or External Type 2.

Tag

Shows the decimal value attached to each external route.

Subnets

For redistributing routes into OSPF, the scope of redistribution for the specified protocol.

Distribute-List

Shows the access list used to filter redistributed routes.


show ipv6 ospf area

This command displays information about the area. The <areaid> identifies the OSPF area that is being displayed.


Format

show ipv6 ospf area <areaid>

Modes

Privileged EXEC
User EXEC



TABLE 5-12 Entry Definitions for show ospf area

Entry

Definition

AreaID

Is the area id of the requested OSPF area.

External Routing

Is a number representing the external routing capabilities for this area.

Spf Runs

Is the number of times that the intra-area route table has been calculated using this area's link-state database.

Area Border Router Count

The total number of area border routers reachable within this area.

Area LSA Count

Total number of link-state advertisements in this area's link-state database, excluding AS External LSAs.

Area LSA Checksum

A number representing the Area LSA Checksum for the specified AreaID excluding the external (LS type 5) link-state advertisements.

Stub Mode

Represents whether the specified Area is a stub area or not. The possible values are enabled and disabled. This is a configured value.

Import Summary LSAs

Shows whether to import summary LSAs (enabled).

OSPF Stub Metric Value

Shows the metric value of the stub area. This field displays only if the area is a configured as a stub area.

The following OSPF NSSA specific information displays only if the area is configured as an NSSA.

Import Summary LSAs

Shows whether to import summary LSAs into the NSSA.

Redistribute into NSSA

Shows whether to redistribute information into the NSSA.

Default Information Originate

Shows whether to advertise a default route into the NSSA

Default Metric

Shows the metric value for the default route advertised into the NSSA.

Default Metric Type

Shows the metric type for the default route advertised into the NSSA.

Translator Role

Shows the NSSA translator role of the ABR, which is always or candidate.

Translator Stability Interval

Shows the amount of time that an elected translator continues to perform its duties after it determines that its translator status has been deposed by another router.

Translator State

Shows whether the ABR translator state is disabled, always, or elected.


show ipv6 ospf border-routers

This command displays ospfv3 routes to reach area border and AS border routers.


Format

show ipv6 ospf border-routers

Mode

Privileged EXEC



TABLE 5-13 Entry Definitions for show ipv6 ospf border-routers

Entry

Definition

Type

The type of the route to the destination, which is one of the following values:
intra - Intra-area route
inter - Inter-area route

Router ID

Router ID of the destination.

Cost

Cost of using this route.

Area ID

The area ID of the area from which this route is learned.

Router Type

The router type of the destination; it is either an ABR or ASBR or both.

Next Hop

Address of the next hop toward the destination.

Next Hop Intf

The outgoing router interface to use when forwarding traffic to the next hop.


show ipv6 ospf database

This command displays information about the link state database when OSPFv3 is enabled. If you do not enter any parameters, the command displays the LSA headers for all areas. Use the optional <areaid> parameter to display database information about a specific area. Use the other optional parameters to specify the type of link state advertisements to display. Use external to display the external LSAs. Use inter-area to display the inter-area LSAs. Use link to display the link LSAs. Use network to display the network LSAs. Use nssa-external to display NSSA external LSAs. Use prefix to display intra-area Prefix LSAs. Use router to display router LSAs. Use unknown area, unknown as, or unknown link to display unknown area, AS or link-scope LSAs, respectively. Use <lsid> to specify the link state ID (LSID). Use adv-router to show the LSAs that are restricted by the advertising router. Use self-originate to display the LSAs in that are self originated. The information below is only displayed if OSPF is enabled.


Format

show ipv6 ospf [<areaid>] database [{external | inter-area {prefix | router} | link | net work | nssa-external | prefix | router | unknown {area | as | link}}] [<lsid>] [{adv-router [<rtrid>] | self-originate}]

Modes

Privileged EXEC
User EXEC


For each link-type and area, the following information is displayed.


TABLE 5-14 Entry Definitions for show ipv6 ospf database

Entry

Definition

Link Id

Is a number that uniquely identifies an LSA that a router originates from all other self originated LSAs of the same LS type.

Adv Router

The Advertising Router. Is a 32 bit dotted decimal number representing the LSDB interface.

Age

Is a number representing the age of the link state advertisement in seconds.

Sequence

Is a number that represents which LSA is more recent.

Checksum

Is the total number LSA checksum.

Options

This is an integer. It indicates that the LSA receives special handling during routing calculations.

Rtr Opt

Router Options are valid for router links only.


show ipv6 ospf database database-summary

Use this command to display the number of each type of LSA in the database and the total number of LSAs in the database.


Format

show ipv6 ospf database database-summary

Modes

Privileged EXEC
User EXEC



TABLE 5-15 Entry Definitions for show ipv6 ospf database database-memory

Entry

Definition

Router

Total number of router LSAs in the OSPFv3 link state database.

Network

Total number of network LSAs in the OSPFv3 link state database.

Inter-area Prefix

Total number of inter-area prefix LSAs in the OSPFv3 link state database.

Inter-area Router

Total number of inter-area router LSAs in the OSPFv3 link state database.

Type-7 Ext

Total number of NSSA external LSAs in the OSPFv3 link state database.

Link

Total number of link LSAs in the OSPFv3 link state database.

Intra-area Prefix

Total number of intra-area prefix LSAs in the OSPFv3 link state database.

Link Unknown

Total number of link-source unknown LSAs in the OSPFv3 link state database.

Area Unknown

Total number of area unknown LSAs in the OSPFv3 link state database.

AS Unknown

Total number of as unknown LSAs in the OSPFv3 link state database.

Type-5 Ext

Total number of AS external LSAs in the OSPFv3 link state database.

Self-Originated Type-5

Total number of self originated AS external LSAs in the OSPFv3 link state database.

Total

Total number of router LSAs in the OSPFv3 link state database.


show ipv6 ospf interface

This command displays the information for the IFO object or virtual interface tables.


Format

show ipv6 ospf interface {<slot/port> | loopback <loopback-id> | tunnel <tunnel-id>}

Modes

Privileged EXEC
User EXEC



TABLE 5-16 Entry Definitions for show ipv6 interface

Entry

Definition

IP Address

Shows the IPv6 address of the interface.

ifIndex

Shows the interface index number associated with the interface.

OSPF Admin Mode

Shows whether the admin mode is enabled or disabled.

OSPF Area ID

Shows the area ID associated with this interface.

Router Priority

Shows the router priority. The router priority determines which router is the designated router.

Retransmit Interval

Shows the frequency, in seconds, at which the interface sends LSA.

Hello Interval

Shows the frequency, in seconds, at which the interface sends Hello packets.

Dead Interval

Shows the amount of time, in seconds, the interface waits before assuming a neighbor is down.

LSA Ack Interval

Shows the amount of time, in seconds, the interface waits before sending an LSA acknowledgement after receiving an LSA.

Iftransit Delay Interval

Shows the number of seconds the interface adds to the age of LSA packets before transmission.

Authentication Type

Shows the type of authentication the interface performs on LSAs it receives.

Metric Cost

Shows the priority of the path. Low costs have a higher priority than high costs.

OSPF MTU-ignore

Shows whether to ignore MTU mismatches in database descriptor packets sent from neighboring routers. The following information only displays if OSPF is initialized on the interface:

OSPF Interface Type

Broadcast LANs, such as Ethernet and IEEE 802.5, take the value broadcast. The OSPF Interface Type will be 'broadcast'.

State

The OSPF Interface States are: down, loopback, waiting, point-to-point, designated router, and backup designated router.

Designated Router

The router ID representing the designated router.

Backup Designated Router

The router ID representing the backup designated router.

Number of Link Events

The number of link events.

Metric Cost

The cost of the OSPF interface.


show ipv6 ospf interface brief

This command displays brief information for the IFO object or virtual interface tables.


Format

show ipv6 ospf interface brief

Modes

Privileged EXEC
User EXEC



TABLE 5-17 Entry Definitions for show ipv6 interface brief

Entry

Definition

Interface

Valid slot and port number separated by forward slashes.

OSPF Admin Mode

States whether OSPF is enabled or disabled on a router interface.

OSPF Area ID

Represents the OSPF Area ID for the specified interface.

Router Priority

Shows the router priority. The router priority determines which router is the designated router.

Hello Interval

Shows the frequency, in seconds, at which the interface sends Hello packets.

Dead Interval

Shows the amount of time, in seconds, the interface waits before assuming a neighbor is down.

Retransmit Interval

Shows the frequency, in seconds, at which the interface sends LSA.

Retransmit Delay Interval

Shows the number of seconds the interface adds to the age of LSA packets before transmission.

LSA Ack Interval

Shows the amount of time, in seconds, the interface waits before sending an LSA acknowledgement after receiving an LSA.


show ipv6 ospf interface stats

This command displays the statistics for a specific interface. The command only displays information if OSPF is enabled.


Format

show ipv6 ospf interface stats <slot/port>

Modes

Privileged EXEC
User EXEC



TABLE 5-18 Entry Definitions for show ipv6 ospf interface stats

Entry

Definition

OSPFv3 Area ID

The area id of this OSPF interface.

IP Address

The IP address associated with this OSPF interface.

OSPFv3 Interface Events

The number of times the specified OSPF interface has changed its state, or an error has occurred.

Virtual Events

The number of state changes or errors that occurred on this virtual link.

Neighbor Events

The number of times this neighbor relationship has changed state, or an error has occurred.

Packets Received

The number of OSPFv3 packets received on the interface.

Packets Transmitted

The number of OSPFv3 packets sent on the interface.

LSAs Sent

The total number of LSAs flooded on the interface.

LSA Acks Received

The total number of LSA acknowledged from this interface.

LSA Acks Sent

The total number of LSAs acknowledged to this interface.


show ipv6 ospf neighbor

This command displays information about OSPF neighbors. If you do not specify a neighbor IP address, the output displays summary information in a table. If you specify an interface or tunnel, only the information for that interface or tunnel displays. The <ip-address> is the IP address of the neighbor, and when you specify this, detailed information about the neighbor displays. The information below only displays if OSPF is enabled and the interface has a neighbor.


Format

show ipv6 ospf neighbor [interface {<slot/port> | tunnel <tunnel_id>}][<ip-address>]

Modes

Privileged EXEC
User EXEC


If you do not specify an IP address, a table with the following columns displays for all neighbors or the neighbor associated with the interface that you specify.


TABLE 5-19 Entry Definitions for show ipv6 ospf neighbor

Entry

Definition

Router ID

Shows the 4-digit dotted-decimal number of the neighbor router.

Priority

Displays the OSPF priority for the specified interface. The priority of an interface is a priority integer from 0 to 255. A value of '0' indicates that the router is not eligible to become the designated router on this network.

Intf ID

Shows the interface ID of the neighbor.

Interface

Shows the interface of the local router in slot/port format.

State

Shows the state of the neighboring routers. Possible values are as follows:

  • Down- initial state of the neighbor conversation - no recent information has been received from the neighbor.
  • Attempt - no recent information has been received from the neighbor but a more concerted effort should be made to contact the neighbor.
  • Init - an Hello packet has recently been seen from the neighbor, but bidirectional communication has not yet been established.
  • 2 way - communication between the two routers is bidirectional.
  • Exchange start - the first step in creating an adjacency between the two neighboring routers, the goal is to decide which router is the master and to decide upon the initial DD sequence number.
  • Exchange - the router is describing its entire link state database by sending Database Description packets to the neighbor.
  • Loading - Link State Request packets are sent to the neighbor asking for the more recent LSAs that have been discovered (but not yet received) in the Exchange state.
  • Full - the neighboring routers are fully adjacent and they will now appear in router-LSAs and network-LSAs.

Dead Time

Shows the amount of time, in seconds, to wait before the router assumes the neighbor is unreachable.

If you specify an IP address for the neighbor router, the following fields display:

Interface

Shows the interface of the local router in slot/port format.

Area ID

The area ID associated with the interface.

Options

An integer value that indicates the optional OSPF capabilities supported by the neighbor. These are listed in its Hello packets. This enables received Hello Packets to be rejected (i.e., neighbor relationships will not even start to form) if there is a mismatch in certain crucial OSPF capabilities.

Router Priority

Displays the router priority for the specified interface.

Dead Timer Due

Shows the amount of time, in seconds, to wait before the router assumes the neighbor is unreachable.

State

Shows the state of the neighboring routers.

Events

Number of times this neighbor relationship has changed state, or an error has occurred.

Retransmission Queue Length

Is an integer representing the current length of the retransmission queue of the specified neighbor router Id of the specified interface.


show ipv6 ospf range

This command displays information about the area ranges for the specified <areaid>. The <areaid> identifies the OSPF area whose ranges are being displayed.


Format

show ipv6 ospf range <areaid>

Modes

Privileged EXEC

User EXEC

 



TABLE 5-20 Entry Definitions for show ipv6 ospf range

Entry

Definition

Area ID

The area id of the requested OSPF area.

IP Address

An IP Address which represents this area range.

Subnet Mask

A valid subnet mask for this area range.

Lsdb Type

The type of link advertisement associated with this area range.

Advertisement

The status of the advertisement: enabled or disabled.


show ipv6 ospf stub table

This command displays the OSPF stub table. The information below will only be displayed if OSPF is initialized on the switch.


Format

show ipv6 ospf stub table

Modes

Privileged EXEC
User EXEC



TABLE 5-21 Entry Definitions for show ipv6 ospf stub table

Entry

Definition

Area ID

A 32-bit identifier for the created stub area.

Type of Service

Type of service associated with the stub metric. For this release, Normal TOS is the only supported type.

Metric Val

The metric value is applied based on the TOS. It defaults to the least metric of the type of service among the interfaces to other areas. The OSPF cost for a route is a function of the metric value.

Import Summary LSA

Controls the import of summary LSAs into stub areas.


show ipv6 ospf virtual-link

This command displays the OSPF Virtual Interface information for a specific area and neighbor. The <areaid> parameter identifies the area and the <neighbor> parameter identifies the neighbor's Router ID.


Format

show ipv6 ospf virtual-link <areaid> <neighbor>

Modes

Privileged EXEC
User EXEC



TABLE 5-22 Entry Definitions for show ipv6 ospf virtual-link

Entry

Definition

Area ID

The area id of the requested OSPF area.

Neighbor Router ID

The input neighbor Router ID.

Hello Interval

The configured hello interval for the OSPF virtual interface.

Dead Interval

The configured dead interval for the OSPF virtual interface.

Iftransit Delay Interval

The configured transit delay for the OSPF virtual interface.

Retransmit Interval

The configured retransmit interval for the OSPF virtual interface.

Authentication Type

Shows the type of authentication the interface performs on LSAs it receives.

State

The OSPF Interface States are: down, loopback, waiting, point-to-point, designated router, and backup designated router. This is the state of the OSPF interface.

Neighbor State

The neighbor state.


show ipv6 ospf virtual-link brief

This command displays the OSPFV3 Virtual Interface information for all areas in the system.


Format

show ipv6 ospf virtual-link brief

Mode

Privileged EXEC
User EXEC



TABLE 5-23 Entry Definitions for show ipv6 ospf virtual-link brief

Entry

Definition

Area ID

The area id of the requested OSPFV3 area.

Neighbor

The neighbor interface of the OSPFV3 virtual interface.

Hello Interval

The configured hello interval for the OSPFV3 virtual interface.

Dead Interval

The configured dead interval for the OSPFV3 virtual interface.

Retransmit Interval

The configured retransmit interval for the OSPFV3 virtual interface.

Transit Delay

The configured transit delay for the OSPFV3 virtual interface.



DHCPv6 Commands

This section describes the command you use to configure the DHCPv6 server on the system and to view DHCPv6 information.

service dhcpv6

This command enables DHCPv6 configuration on the router.


Default

enabled

Format

service dhcpv6

Mode

Global Config


no service dhcpv6

This command disables DHCPv6 configuration on router.


Format

no service dhcpv6

Mode

Global Config


ipv6 dhcp server

Use this command to configure DHCPv6 server functionality on an interface. The <pool-name> is the DHCPv6 pool containing stateless and/or prefix delegation parameters, rapid-commit is an option that allows for an abbreviated exchange between the client and server, and <pref-value> is a value used by clients to determine preference between multiple DHCPv6 servers. For a particular interface DHCPv6 server and DHCPv6 relay functions are mutually exclusive.


Format

ipv6 dhcp server <pool-name> [rapid-commit] [preference <pref-value>]

Mode

Interface Config


ipv6 dhcp relay destination

Use this command to configure an interface for DHCPv6 relay functionality.



Note - If <relay-address> is an IPv6 global address, then <relay-interface> is not required. If <relay-address> is a link-local or multicast address, then <relay-interface> is required. Finally, if you do not specify a value for <relay-address>, then you must specify a value for <relay-interface> and the DHCPV6-ALL-AGENTS multicast address (i.e. FF02::1:2) is used to relay DHCPv6 messages to the relay server.



Format

ipv6 dhcp relay {destination [<relay-address>] interface [<relay-interface>]| interface [<relay-interface>]} [remote-id (duid-ifid | <user-defined-string>)]

Mode

Interface Config


ipv6 dhcp relay-agent-info-opt

Use this command to configure a number to represent the DHCPv6 Relay Agent Information Option. The DHCPv6 Relay Agent Information Option allows for various sub-options to be attached to messages that are being relayed by the local router to a relay server. The relay server may in turn use this information in determining an address to assign to a DHCPv6 client.


Default

32

Format

ipv6 dhcp relay-agent-info-opt <32-65535>

Mode

Global Config


ipv6 dhcp relay-agent-info-remote-id-subopt

Use this command to configure a number to represent the DHCPv6 the “remote-id” sub-option.


Default

1

Format

ipv6 dhcp relay-agent-info-remote-id-subopt <1-65535>

Mode

Global Config


ipv6 dhcp pool

Use this command from Global Config mode to enter IPv6 DHCP Pool Config mode. Use the exit command to return to Global Config mode. To return to the User EXEC mode, enter CTRL+Z. The <pool-name> should be less than 31 alpha-numeric characters. DHCPv6 pools are used to specify information for DHCPv6 server to distribute to DHCPv6 clients. These pools are shared between multiple interfaces over which DHCPv6 server capabilities are configured.


Format

ipv6 dhcp pool <pool-name>

Mode

Global Config


no ipv6 dhcp pool

This command removes the specified DHCPv6 pool.


Format

no ipv6 dhcp pool <pool-name>

Mode

Global Config


domain-name (IPv6)

This command sets the DNS domain name which is provided to DHCPv6 client by DHCPv6 server. DNS domain name is configured for stateless server support. Domain name consist of no more than 31 alpha-numeric characters. DHCPv6 pool can have multiple number of domain names with maximum of 8.


Format

domain-name <dns-domain-name>

Mode

IPv6 DHCP Pool Config


no domain-name

This command will remove dhcpv6 domain name from dhcpv6 pool.


Format

no domain-name <dns-domain-name>

Mode

IPv6 DHCP Pool Config


dns-server (IPv6)

This command sets the ipv6 DNS server address which is provided to dhcpv6 client by dhcpv6 server. DNS server address is configured for stateless server support. DHCPv6 pool can have multiple number of domain names with maximum of 8.


Format

dns-server <dns-server-address>

Mode

IPv6 DHCP Pool Config


no dns-server

This command will remove DHCPv6 server address from DHCPv6 server.


Format

no dns-server <dns-server-address>

Mode

IPv6 DHCP Pool Config


prefix-delegation (IPv6)

Multiple IPv6 prefixes can be defined within a pool for distributing to specific DHCPv6 Prefix delegation clients. Prefix is the delegated IPv6 prefix. DUID is the client's unique DUID value (Example: 00:01:00:09:f8:79:4e:00:04:76:73:43:76'). Name is 31 characters textual client’s name which is useful for logging or tracing only. Valid lifetime is the valid lifetime for the delegated prefix in seconds and preferred lifetime is the preferred lifetime for the delegated prefix in seconds.


Default

preferred-lifetime: 2592000
valid-lifetime: 604800

Format

prefix-delegation <prefix/prefixlength> <DUID> [name <hostname>] [valid-lifetime <04294967295>][preferred-lifetime < 0-4294967295>]

Mode

IPv6 DHCP Pool Config


no prefix-delegation

This command deletes a specific prefix-delegation client.


Format

no prefix-delegation <prefix/prefix-delegation> <DUID>

Mode

IPv6 DHCP Pool Config


show ipv6 dhcp

This command displays the DHCPv6 server name and status.


Format

show ipv6 dhcp

Mode

Privileged EXEC

DHCPv6 is Enabled (Disabled)

Shows the status of the DHCPv6 server.

Server DUID:

If configured, shows the DHCPv6 unique identifier


show ipv6 dhcp statistics

This command displays the IPv6 DHCP statistics for all interfaces.


Format

show ipv6 dhcp statistics

Mode

Privileged EXEC



TABLE 5-24 Entry Definitions for show ipv6 dhcp statistics

Entry

Definition

DHCPv6 Solicit Packets Received

Number of solicit received statistics.

DHCPv6 Request Packets Received

Number of request received statistics.

DHCPv6 Confirm Packets Received

Number of confirm received statistics.

DHCPv6 Renew Packets Received

Number of renew received statistics.

DHCPv6 Rebind Packets Received

Number of rebind received statistics.

DHCPv6 Release Packets Received

Number of release received statistics.

DHCPv6 Decline Packets Received

Number of decline received statistics.

DHCPv6 Inform Packets Received

Number of inform received statistics.

DHCPv6 Relay-forward Packets Received

Number of relay forward received statistics.

DHCPv6 Relay-reply Packets Received

Number of relay-reply received statistics.

DHCPv6 Malformed Packets Received

Number of malformed packets statistics.

Received DHCPv6 Packets Discarded

Number of DHCP discarded statistics.

Total DHCPv6 Packets Received

Total number of DHCPv6 received statistics.

DHCPv6 Advertisement Packets Transmitted

Number of advertise sent statistics.

DHCPv6 Reply Packets Transmitted

Number of reply sent statistics.

DHCPv6 Reconfig Packets Transmitted

Number of reconfigure sent statistics.

DHCPv6 Relay-reply Packets Transmitted

Number of relay-reply sent statistics.

DHCPv6 Relay-forward Packets Transmitted

Number of relay-forward sent statistics.

Total DHCPv6 Packets Transmitted

total number of DHCPv6 sent statistics.


show ipv6 dhcp interface

This command displays DHCPv6 information for all relevant interfaces or the specified interface. If you specify an interface, you can use the optional statistics parameter to view statistics for the specified interface.


Format

show ipv6 dhcp interface <slot/port> [statistics]

Mode

Privileged EXEC



TABLE 5-25 Entry Definitions for show ipv6 dhcp interface

Entry

Definition

IPv6 Interface

Shows the interface name in <slot/port> format.

Mode

Shows whether the interface is a IPv6 DHCP relay or server.

(Server)

If the interface mode is server, the following information displays.

Pool Name

Shows the pool name specifying information for DHCPv6 server distribution to DHCPv6 clients.

Server Preference

Shows the preference of the server.

Option Flags

Shows whether rapid commit is enabled..

(Relay)

If the interface mode is relay, the following information displays

Relay Address

Shows the IPv6 address of the relay server.

Relay Interface Number

Shows the relay server interface in <slot/port> format.

Relay Remote ID

If configured, shows the name of the relay remote.

Option Flags

Shows whether rapid commit is configured.


If you use the statistics parameter, the command displays the IPv6 DHCP statistics for the specified interface. See show ipv6 dhcp statistics for information about the output.

clear ipv6 dhcp

Use this command to clear DHCPv6 statistics for all interfaces or for a specific interface. Use the <slot/port> parameter to specify the interface.


Format

clear ipv6 dhcp {statistics | interface <slot/port> statistics}

Mode

Privileged EXEC


show ipv6 dhcp pool

This command displays configured DHCP pool.


Format

show ipv6 dhcp pool <pool-name>

Mode

Privileged EXEC



TABLE 5-26 Entry Definitions for show ipv6 dhcp pool

Entry

Definition

DHCP Pool Name

Unique pool name configuration.

Client DUID

Client’s DHCP unique identifier. DUID is generated using the combination of the local system burned-in MAC address and a timestamp value.

Host

Name of the client.

Prefix/Prefix Length

IPv6 address and mask length for delegated prefix.

Preferred Lifetime

Preferred lifetime in seconds for delegated prefix.

Valid Lifetime

Valid lifetime in seconds for delegated prefix.

DNS Server Address

Address of DNS server address.

Domain Name

DNS domain name.


show ipv6 dhcp binding

This command displays configured DHCP pool.


Format

show ipv6 dhcp binding [<ipv6-address>]

Mode

Privileged EXEC



TABLE 5-27 Entry Definitions for show ipv6 dhcp interface

Entry

Definition

DHCP Client Address

Address of DHCP Client

DUID

String that represents the Client DUID.

IAID

Identity Association ID

Prefix/Prefix Length

IPv6 address and mask length for delegated prefix.

Prefix Type

IPV6 Prefix type (IAPD, IANA, or IATA).

Client Address

Address of DHCP Client.

Client Interface

IPv6 Address of DHCP Client.

Expiration

Address of DNS server address.

Valid Lifetime

Valid lifetime in seconds for delegated prefix.

Preferred Lifetime

Preferred lifetime in seconds for delegated prefix.