Routing Commands

C H A P T E R 4

Routing Commands

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

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

Show commands are used to display switch settings, statistics, and other information.

Configuration commands are used to configure features and options of the switch. For every configuration command there is a show command that will display the configuration setting.

Clear commands clear some or all of the settings to factory defaults.

This chapter contains the following sections:

Address Resolution Protocol (ARP) Commands

IP Routing Commands

Router Discovery Protocol Commands

Virtual LAN Routing Commands

Virtual Router Redundancy Protocol Commands

VRRP Tracking Commands

DHCP and BOOTP Relay Commands

Open Shortest Path First (OSPF) Commands

Routing Information Protocol (RIP) Commands

Address Resolution Protocol (ARP) Commands

This section describes the commands you use to configure ARP and to view ARP information on the switch. ARP associates IP addresses with MAC addresses and stores the information as ARP entries in the ARP cache.

arp

This command creates an ARP entry. The value for <ipaddress> is the IP address of a device on a subnet attached to an existing routing interface. <macaddr> is a unicast MAC address for that device.

The format is 6 two-digit hexadecimal numbers that are separated by colons, for example 00:06:29:32:81:40.

Format	arp <ipaddress> <macaddr>
Mode	Global Config

`no arp`

This command deletes an ARP entry. The value for <arpentry> is the IP address of the interface. The value for <ipaddress> is the IP address of a device on a subnet attached to an existing routing interface. <macaddr> is a unicast MAC address for that device.

Format	no arp <ipaddress> <macaddr>
Mode	Global Config

ip proxy-arp

This command enables proxy ARP on a router interface. Without proxy ARP, a device only responds to an ARP request if the target IP address is an address configured on the interface where the ARP request arrived. With proxy ARP, the device may also respond if the target IP address is reachable. The device only responds if all next hops in its route to the destination are through interfaces other than the interface that received the ARP request.

Default	enabled
Format	ip proxy-arp
Mode	Interface Config

no ip proxy-arp

This command disables proxy ARP on a router interface.

Format	no ip proxy-arp
Mode	Interface Config

arp cachesize

This command configures the ARP cache size. The ARP cache size value is a platform specific integer value. The default size also varies depending on the platform.

Format	arp cachesize <platform specific integer value>
Mode	Global Config

no arp cachesize

This command configures the default ARP cache size.

Format	no arp cachesize
Mode	Global Config

arp dynamicrenew

This command enables the ARP component to automatically renew dynamic ARP entries when they age out.

Default	enabled
Format	arp dynamicrenew
Mode	Privileged EXEC

no arp dynamicrenew

This command prevents dynamic ARP entries from renewing when they age out.

Format	no arp dynamicrenew
Mode	Privileged EXEC

arp purge

This command causes the specified IP address to be removed from the ARP cache. Only entries of type dynamic or gateway are affected by this command.

Format	arp purge <ipaddr>
Mode	Privileged EXEC

arp resptime

This command configures the ARP request response timeout.

The value for <seconds> is a valid positive integer, which represents the IP ARP entry response timeout time in seconds. The range for <seconds> is between 1-10 seconds.

Default	l
Format	arp resptime <1-10>
Mode	Global Config

no arp resptime

This command configures the default ARP request response timeout.

Format	no arp resptime
Mode	Global Config

arp retries

This command configures the ARP count of maximum request for retries.

The value for <retries> is an integer, which represents the maximum number of request for retries. The range for <retries> is an integer between 0-10 retries.

Default	4
Format	arp retries <0-10>
Mode	Global Config

no arp retries

This command configures the default ARP count of maximum request for retries.

Format	no arp retries
Mode	Global Config

arp timeout

This command configures the ARP entry ageout time.

The value for <seconds> is a valid positive integer, which represents the IP ARP entry ageout time in seconds. The range for <seconds> is between 15-21600 seconds.

Default	1200
Format	arp timeout <15-21600>
Mode	Global Config

no arp timeout

This command configures the default ARP entry ageout time.

Format	no arp timeout
Mode	Global Config

clear arp-cache

This command causes all ARP entries of type dynamic to be removed from the ARP cache. If the gateway keyword is specified, the dynamic entries of type gateway are purged as well.

Format	clear arp-cache [gateway]
Mode	Privileged EXEC

show arp

This command displays the Address Resolution Protocol (ARP) cache. The displayed results are not the total ARP entries. To view the total ARP entries, the operator should view the show arp results in conjunction with the show arp switch results.

Format	show arp
Mode	Privileged EXEC

TABLE 4-1 Entry Definitions for `show arp`
Entry	Definition
Age Time (seconds)	Is the time it takes for an ARP entry to age out. This value was configured into the unit. Age time is measured in seconds.
Response Time (seconds)	Is the time it takes for an ARP request timeout. This value was configured into the unit. Response time is measured in seconds.
Retries	Is the maximum number of times an ARP request is retried. This value was configured into the unit.
Cache Size	Is the maximum number of entries in the ARP table. This value was configured into the unit.
Dynamic Renew Mode	Displays whether the ARP component automatically attempts to renew dynamic ARP entries when they age out.
Total Entry Count Current / Peak	Field listing the total entries in the ARP table and the peak entry count in the ARP table.
Static Entry Count Current / Max	Field listing the static entry count in the ARP table and maximum static entry count in the ARP table. The following entries are displayed for each ARP entry.
IP Address	Is the IP address of a device on a subnet attached to an existing routing interface.
MAC Address	Is the hardware MAC address of that device.
Interface	Is the routing slot/port associated with the device ARP entry.
Type	Is the type that was configured into the unit. The possible values are Local, Gateway, Dynamic and Static.
Age	This field displays the current age of the ARP entry since last refresh (in hh:mm:ss format

show arp brief

This command displays the brief Address Resolution Protocol (ARP) table information.

Format	show arp brief
Mode	Privileged EXEC

TABLE 4-2 Entry Definitions for *show arp brief*
Entry	Definition
Age Time (seconds)	Is the time it takes for an ARP entry to age out. This value was configured into the unit. Age time is measured in seconds.
Response Time (seconds)	Is the time it takes for an ARP request timeout. This value was configured into the unit. Response time is measured in seconds.
Retries	Is the maximum number of times an ARP request is retried. This value was configured into the unit.
Cache Size	Is the maximum number of entries in the ARP table. This value was configured into the unit.
Dynamic Renew Mode	Displays whether the ARP component automatically attempts to renew dynamic ARP entries when they age out.
Total Entry Count Current / Peak	Field listing the total entries in the ARP table and the peak entry count in the ARP table.
Static Entry Count Current / Max	Field listing the static entry count in the ARP table and maximum static entry count in the ARP table.

show arp switch

This command displays the contents of the switch’s Address Resolution Protocol (ARP) table.

Format	show arp switch
Mode	Privileged EXEC

TABLE 4-3 Entry Definitions for *show arp switch*
Entry	Definition
IP Address	Is the IP address of a device on a subnet attached to the switch.
MAC Address	Is the hardware MAC address of that device.
Interface	Is the routing slot/port associated with the device’s ARP entry.

IP Routing Commands

This section describes the commands you use to enable and configure IP routing on the switch.

routing

This command enables IPv4 and IPv6 routing for an interface. You can view the current value for this function with the show ip brief command. The value is labeled as “Routing Mode.”

Default	disabled
Format	routing
Mode	Interface Config

no routing

This command disables routing for an interface.

You can view the current value for this function with the show ip brief command. The value is labeled as “Routing Mode.”

Format	no routing
Mode	Interface Config

ip routing

This command enables the IP Router Admin Mode for the master switch.

Format	ip routing
Mode	Global Config

no ip routing

This command disables the IP Router Admin Mode for the master switch.

Format	no ip routing
Mode	Global Config

ip address

This command configures an IP address on an interface. You can also use this command to configure one or more secondary IP addresses on the interface.The value for <ipaddr> is the IP Address of the interface. The value for <subnetmask> is a 4-digit dotted-decimal number which represents the subnet mask of the interface. The subnet mask must have contiguous ones and be no longer than 30 bits, for example 255.255.255.0. This command changes the label IP address in show ip interface.

Format	ip address <ipaddr> <subnetmask> [secondary]
Mode	Interface Config

no ip address

This command deletes an IP address from an interface. The value for <ipaddr> is the IP Address of the interface. The value for <subnetmask> is a 4-digit dotted-decimal number which represents the Subnet Mask of the interface.

Format	no ip address <ipaddr> <subnetmask> [secondary]
Mode	Interface Config

ip route

This command configures a static route.

The <ipaddr> parameter is a valid IP address, and <subnetmask> is a valid subnet mask.

The <nexthopip> parameter is a valid IP address of the next hop router.

The optional <preference> parameter is an integer (value from 1 to 255) that allows you to specify the preference value (sometimes called “administrative distance”) of an individual static route.

Among routes to the same destination, the route with the lowest preference value is the route entered into the forwarding database. By specifying the preference of a static route, you control whether a static route is more or less preferred than routes from dynamic routing protocols. The preference also controls whether a static route is more or less preferred than other static routes to the same destination. A route with a preference of 255 cannot be used to forward traffic.

For the static routes to be visible, you must perform the following steps:

Enable ip routing globally.

Enable ip routing for the interface.

Confirm that the associated link is also up.

Default	preference--1
Format	ip route <ipaddr> <subnetmask> <nexthopip> [<preference>]
Mode	Global Config

no ip route

This command deletes all next hops to a destination static route. If you use the <nexthopip> parameter, the next hop is deleted. If you use the <preference> value, the preference value of the static route is reset to its default.

Format	no ip route <ipaddr> <subnetmask> [{<nexthopip> \| <preference>}]
Mode	Global Config

ip route default

This command configures the default route. The value for <nexthopip> is a valid IP address of the next hop router. The <preference> is an integer value from 1 to 255. A route with a preference of 255 cannot be used to forward traffic.

Default	preference--1
Format	ip route default <nexthopip> [<preference>]
Mode	Global Config

no ip route default

This command deletes all configured default routes. If the optional <nexthopip> parameter is designated, the specific next hop is deleted from the configured default route and if the optional preference value is designated, the preference of the configured default route is reset to its default.

Format	no ip route default [{<nexthopip> \| <preference>}]
Mode	Global Config

ip route distance

This command sets the default distance (preference) for static routes. Lower route distance values are preferred when determining the best route. The ip route and ip route default commands allow you to optionally set the distance (preference) of an individual static route. The default distance is used when no distance is specified in these commands. Changing the default distance does not update the distance of existing static routes, even if they were assigned the original default distance. The new default distance will only be applied to static routes created after invoking the ip route distance command.

Default	1
Format	ip route distance <1-255>
Mode	Global Config

no ip route distance

This command sets the default static route preference value in the router. Lower route preference values are preferred when determining the best route.

Format	no ip route distance
Mode	Global Config

ip forwarding

This command enables forwarding of IP frames.

Default	enabled
Format	ip forwarding
Mode	Global Config

no ip forwarding

This command disables forwarding of IP frames.

Format	no ip forwarding
Mode	Global Config

ip netdirbcast

This command enables the forwarding of network-directed broadcasts. When enabled, network directed broadcasts are forwarded. When disabled they are dropped.

Default	disabled
Format	ip netdirbcast
Mode	Interface Config

no ip netdirbcast

This command disables the forwarding of network-directed broadcasts. When disabled, network directed broadcasts are dropped.

Format	no ip netdirbcast
Mode	Interface Config

ip mtu

This command sets the IP Maximum Transmission Unit (MTU) on a routing interface. The IP MTU is the size of the largest IP packet that can be transmitted on the interface without fragmentation. FASTPATH software currently does not fragment IP packets.

Packets forwarded in hardware ignore the IP MTU.

Packets forwarded in software are dropped if they exceed the IP MTU of the outgoing interface.

Packets originated on the router, such as OSPF packets, may be fragmented by the IP stack. The IP stack uses its default IP MTU and ignores the value set using the ip mtu command.

OSPF advertises the IP MTU in the Database Description packets it sends to its neighbors during database exchange. If two OSPF neighbors advertise different IP MTUs, they will not form an adjacency (unless OSPF has been instructed to ignore differences in IP MTU with the ip ospf mtu-ignore command.)

Note - The IP MTU size refers to the maximum size of the IP packet (IP Header + IP payload). It does not include any extra bytes that may be required for Layer-2 headers. To receive and process packets, the Ethernet MTU (mtu) must take into account the size of the Ethernet header.

Default	1500 bytes
Format	ip mtu <68-1500>
Mode	Interface Config

no ip mtu

This command resets the ip mtu to the default value.

Format	no ip mtu <mtu>
Mode	Interface Config

encapsulation

This command configures the link layer encapsulation type for the packet. The encapsulation type can be ethernet or snap.

Default	ethernet
Format	encapsulation {ethernet \| snap}
Mode	Interface Config

Note - Routed frames are always ethernet encapsulated when a frame is routed to a VLAN.

show ip brief

This command displays all the summary information of the IP.

Format	show ip brief
Modes	Privileged EXEC User EXEC

TABLE 4-4 Entry Definitions for *show ip brief*
Entry	Definition
Default Time to Live	The computed TTL (Time to Live) of forwarding a packet from the local router to the final destination.
Routing Mode	Shows whether the routing mode is enabled or disabled.
IP Forwarding Mode	Shows whether forwarding of IP frames is enabled or disabled. This is a configured value.
Maximum Next Hops	Shows the maximum number of next hops the packet can travel.

show ip interface

This command displays all pertinent information about the IP interface.

Format	show ip interface <slot/port>
Modes	Privileged EXEC User EXEC

TABLE 4-5 Entry Definitions for *show ip interface*
Entry	Definition
Primary IP Address	Displays the primary IP address and subnet masks for the interface. This value appears only if you configure it.
Secondary IP Address	Displays one or more secondary IP addresses and subnet masks for the interface. This value appears only if you configure it.
Routing Mode	Is the administrative mode of router interface participation. The possible values are enable or disable. This value was configured into the unit.
Administrative Mode	Is the administrative mode of the specified interface. The possible values of this field are enable or disable. This value was configured into the unit.
Forward Net Directed Broadcasts	Displays whether forwarding of network-directed broadcasts is enabled or disabled. This value was configured into the unit.
Proxy ARP	Displays whether Proxy ARP is enabled or disabled on the system.
Active State	Displays whether the interface is active or inactive. An interface is considered active if its link is up and it is in forwarding state.
Link Speed Data Rate	Is an integer representing the physical link data rate of the specified interface. This is measured in Megabits per second (Mbps).
MAC Address	Is the burned in physical address of the specified interface. The format is 6 two-digit hexadecimal numbers that are separated by colons.
Encapsulation Type	Is the encapsulation type for the specified interface. The types are: Ethernet or SNAP.
IP MTU	Displays the maximum transmission unit (MTU) size of a frame, in bytes.

show ip interface brief

This command displays summary information about IP configuration settings for all ports in the router.

Format	show ip interface brief
Modes	Privileged EXEC User EXEC

TABLE 4-6 Entry Definitions for *show ip interface brief*
Entry	Definition
Interface	Valid slot and port number separated by forward slashes.
IP Address	The IP address of the routing interface in 32-bit dotted decimal format.
IP Mask	The IP mask of the routing interface in 32-bit dotted decimal format.
Netdir Bcast	Indicates if IP forwards net-directed broadcasts on this interface. Possible values are Enable or Disable.
MultiCast Fwd	Indicates the multicast forwarding administrative mode on the interface. Possible values are Enable or Disable.

show ip route

This command displays the routing table.

The <ip-address> specifies the network for which the route is to be displayed and displays the best matching best-route for the address.

The <mask> specifies the subnet mask for the given <ip-address>.

When you use the longer-prefixes keyword, the <ip-address> and <mask> pair becomes the prefix, and the command displays the routes to the addresses that match that prefix.

Use the <protocol> parameter to specify the protocol that installed the routes. The value for <protocol> can be connected, ospf, rip, static, or bgp.

Use the all parameter to display all routes including best and non-best routes. If you do not use the all parameter, the command only displays the best route.

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 ip route [{<ip-address> [<protocol>] \| {<ip-address> <mask> [longer-prefixes] [<protocol>] \| <protocol>} [all] \| all}]
Mode	Privileged EXEC User EXEC
Route Codes	Displays the key for the routing protocol codes that might appear in the routing table output.

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

Code   IP-Address/Mask [Preference/Metric] via Next-Hop, Interface

The columns for the routing table display the following information.

TABLE 4-7 Entry Definitions for *show ip route*
Entry	Definition
Code	The codes for the routing protocols that created the routes.
IP-Address/Mask	The IP-Address and mask of the destination network corresponding to this route.
Preference	The administrative distance associated with this route. Routes with low values are preferred over routes with higher values.
Metric	The cost associated with this route.
via Next-Hop	The outgoing router IP 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 destination

show ip route summary

Use this command to display the routing table summary. Use the optional all parameter to show the number of all routes, including best and non-best routes. To include only the number of best routes, do not use the optional parameter.

Format	show ip route summary [all]
Mode	Privileged EXEC User EXEC

TABLE 4-8 Entry Definitions for *show ip route summary*
Entry	Definition
Connected Routes	The total number of connected routes in the routing table.
Static Routes	Total number of static routes in the routing table.
RIP Routes	Total number of routes installed by RIP protocol.
BGP Routes	Total number of routes installed by BGP protocol.
OSPF Routes	Total number of routes installed by OSPF protocol.
Total Routes	Total number of routes in the routing table.

show ip route preferences

This command displays detailed information about the route preferences. Route preferences are used in determining the best route. Lower router preference values are preferred over higher router preference values. A route with a preference of 255 cannot be used to forward traffic.

Format	show ip route preferences
Modes	Privileged EXEC User EXEC

TABLE 4-9 Entry Definitions for *show ip route preferences*
Entry	Definition
Local	This field displays the local route preference value.
Static	This field displays the static route preference value.
OSPF Intra	This field displays the OSPF Intra route preference value.
OSPF Inter	This field displays the OSPF Inter route preference value.
OSPF Ext T1	This field displays the OSPF External Type-1 route preference value.
OSPF Ext T2	This field displays the OSPF External Type-2 route preference value.
OSPF NSSA T1	This field displays the OSPF NSSA Type-1 route preference value.
OSPF NSSA T2	This field displays the OSPF NSSA Type-2 route preference value.
RIP	This field displays the RIP route preference value.
BGP4	This field displays the BGP-4 route preference value.

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

show ip stats

This command displays IP statistical information. Refer to RFC 1213 for more information about the fields that are displayed.

Format	show ip stats
Modes	Privileged EXEC User EXEC

Router Discovery Protocol Commands

This section describes the commands you use to view and configure Router Discovery Protocol settings on the switch. The Router Discovery Protocol enables a host to discover the IP address of routers on the subnet.

ip irdp

This command enables Router Discovery on an interface.

Default	disabled
Format	ip irdp
Mode	Interface Config

no ip irdp

This command disables Router Discovery on an interface.

Format	no ip irdp
Mode	Interface Config

ip irdp address

This command configures the address that the interface uses to send the router discovery advertisements. The valid values for <ipaddr> are 224.0.0.1, which is the all-hosts IP multicast address, and 255.255.255.255, which is the limited broadcast address.

Default	224.0.0.1
Format	ip irdp address <ipaddr>
Mode	Interface Config

no ip irdp address

This command configures the default address used to advertise the router for the interface.

Format	no ip irdp address
Mode	Interface Config

ip irdp holdtime

This command configures the value, in seconds, of the holdtime field of the router advertisement sent from this interface. The holdtime range is the value of <maxadvertinterval> to 9000 seconds.

Default	3 * maxinterval
Format	ip irdp holdtime <maxadvertinterval-9000>
Mode	Interface Config

no ip irdp holdtime

This command configures the default value, in seconds, of the holdtime field of the router advertisement sent from this interface.

Format	no ip irdp holdtime
Mode	Interface Config

ip irdp maxadvertinterval

This command configures the maximum time, in seconds, allowed between sending router advertisements from the interface. The range for maxadvertinterval is 4 to 1800 seconds.

Default	600
Format	ip irdp maxadvertinterval <4-1800>
Mode	Interface Config

no ip irdp maxadvertinterval

This command configures the default maximum time, in seconds.

Format	no ip irdp maxadvertinterval
Mode	Interface Config

ip irdp minadvertinterval

This command configures the minimum time, in seconds, allowed between sending router advertisements from the interface. The range for minadvertinterval is three to the value of maxadvertinterval.

Default	0.75 * maxadvertinterval
Format	ip irdp minadvertinterval <3-maxadvertinterval>
Mode	Interface Config

no ip irdp minadvertinterval

This command sets the default minimum time to the default.

Format	no ip irdp minadvertinterval
Mode	Interface Config

ip irdp preference

This command configures the preferability of the address as a default router address, relative to other router addresses on the same subnet.

Default	0
Format	ip irdp preference <-2147483648 to 2147483647>
Mode	Interface Config

no ip irdp preference

This command configures the default preferability of the address as a default router address, relative to other router addresses on the same subnet.

Format	no ip irdp preference
Mode	Interface Config

show ip irdp

This command displays the router discovery information for all interfaces, or a specified interface.

Format	show ip irdp {<slot/port> \| all}
Modes	Privileged EXEC User EXEC

TABLE 4-10 Entry Definitions for *show ip irdp*
Entry	Definition
Interface	Shows the <slot/port> that matches the rest of the information in the row.
Ad Mode	Displays the advertise mode, which indicates whether router discovery is enabled or disabled on this interface.
Advertise Address	Displays the IP address to which the interface sends the advertisement.
Max Int	Displays the maximum advertise interval, which is the maximum time, in seconds, allowed between sending router advertisements from the interface.
Min Int	Displays the minimum advertise interval, which is the minimum time, in seconds, allowed between sending router advertisements from the interface.
Hold Time	Displays the amount of time, in seconds, that a system should keep the router advertisement before discarding it.
Preference	Displays the preference of the address as a default router address, relative to other router addresses on the same subnet.

Virtual LAN Routing Commands

This section describes the commands you use to view and configure VLAN routing and to view VLAN routing status information.

vlan routing

This command creates routing on a VLAN. The <vlanid> value has a range from 1 to 4094.

Format	vlan routing <vlanid>
Mode	VLAN Config

no vlan routing

This command deletes routing on a VLAN. The <vlanid> value has a range from 1 to 4094.

Format	no vlan routing <vlanid>
Mode	VLAN Config

show ip vlan

This command displays the VLAN routing information for all VLANs with routing enabled.

Format	show ip vlan
Modes	Privileged EXEC User EXEC

TABLE 4-11 Entry Definitions for *show ip vlan*
Entry	Definition
MAC Address used by Routing VLANs	Is the MAC Address associated with the internalbridge-router interface (IBRI). The same MAC Address is used by all VLAN routing interfaces. It will be displayed above the per-VLAN information.
VLAN ID	Is the identifier of the VLAN.
Logical Interface	Shows the logical slot/port associated with the VLAN routing interface.
IP Address	Displays the IP Address associated with this VLAN.
Subnet Mask	Indicates the subnet mask that is associated with this VLAN.

Virtual Router Redundancy Protocol Commands

This section describes the commands you use to view and configure Virtual Router Redundancy Protocol (VRRP) and to view VRRP status information. VRRP helps provide failover and load balancing when you configure two devices as a VRRP pair.

ip vrrp

In Global Config mode, this command enables the administrative mode of VRRP in the router. In Interface Config mode, this command enables the VRRP protocol on an interface. The parameter <vrid> is the virtual router ID which has an integer value range from 1 to 255.

Default	none
Format	ip vrrp <vrid>
Mode	Global Config Interface Config

no ip vrrp

In Global Config mode, this command disables the default administrative mode of VRRP in the router. In Interface Config mode, this command disables the VRRP protocol on an interface. This command also removes a virtual router IP address as a secondary IP address on an interface. The virtual Router ID, <vrid>, is an integer value that ranges from 1 to 255.

Format	no ip vrrp <vrid> <ipaddress> [secondary]
Mode	Global Config Interface Config

ip vrrp mode

This command enables the virtual router configured on the specified interface. Enabling the status field starts a virtual router. The parameter <vrid> is the virtual router ID which has an integer value ranging from 1 to 255.

Default	disabled
Format	ip vrrp <vrid> mode
Mode	Interface Config

no ip vrrp mode

This command disables the virtual router configured on the specified interface. Disabling the status field stops a virtual router.

Format	no ip vrrp <vrid> mode
Mode	Interface Config

ip vrrp ip

This command sets the virtual router ipaddress value for an interface. The value for <ipaddr> is the IP Address which is to be configured on that interface for VRRP. The parameter <vrid> is the virtual router ID which has an integer value range from 1 to 255. You can use the optional [secondary] parameter to designate the IP address as a secondary IP address.

Default	none
Format	ip vrrp <vrid> ip <ipaddr> [secondary]
Mode	Interface Config

ip vrrp authentication

This command sets the authorization details value for the virtual router configured on a specified interface. The parameter {none | simple} specifies the authorization type for virtual router configured on the specified interface. The parameter [key] is optional, it is only required when authorization type is simple text password. The parameter <vrid> is the virtual router ID which has an integer value ranges from 1 to 255.

Default	no authorization
Format	ip vrrp <vrid> authentication {none \| simple <key>}
Mode	Interface Config

no ip vrrp authentication

This command sets the default authorization details value for the virtual router configured on a specified interface.

Format	no ip vrrp <vrid> authentication
Mode	Interface Config

ip vrrp preempt

This command sets the preemption mode value for the virtual router configured on a specified interface. The parameter <vrid> is the virtual router ID, which is an integer from 1 to 255

Default	enabled
Format	ip vrrp <vrid> preempt
Mode	Interface Config

no ip vrrp preempt

This command sets the default preemption mode value for the virtual router configured on a specified interface.

Format	no ip vrrp <vrid> preempt
Mode	Interface Config

ip vrrp priority

This command sets the priority value for the virtual router configured on a specified interface. The priority of the interface is a priority integer from 1 to 254. The parameter <vrid> is the virtual router ID which has an integer value ranges from 1 to 255.

Default	100
Format	ip vrrp <vrid> priority <1-254>
Mode	Interface Config

no ip vrrp priority

This command sets the default priority value for the virtual router configured on a specified interface.

Format	no ip vrrp <vrid> priority
Mode	Interface Config

ip vrrp timers advertise

This command sets the frequency, in seconds, that an interface on the specified virtual router sends a virtual router advertisement.

Default	1
Format	ip vrrp <vrid> timers advertise <1-255>
Mode	Interface Config

no ip vrrp timers advertise

This command sets the default virtual router advertisement value for an interface.

Format	no ip vrrp <vrid> timers advertise
Mode	Interface Config

show ip vrrp interface stats

This command displays the statistical information about each virtual router configured on the FASTPATH switch.

Format	show ip vrrp interface stats <slot/port> <vrid>
Modes	Privileged EXEC User EXEC

TABLE 4-12 Entry Definitions for *show ip vrrp interface stats*
Entry	Definition
Uptime	The time that the virtual router has been up, in days, hours, minutes and seconds.
Protocol	Represents the protocol configured on the interface.
State Transitioned to Master	Represents the total number of times virtual router state has changed to MASTER.
Advertisement Received	Represents the total number of VRRP advertisements received by this virtual router.
Advertisement Interval Errors	Represents the total number of VRRP advertisements received for which advertisement interval is different than the configured value for this virtual router.
Authentication Failure	Represents the total number of VRRP packets received that don't pass the authentication check.
IP TTL errors	Represents the total number of VRRP packets received by the virtual router with IP TTL (time to live) not equal to 255.
Zero Priority Packets Received	Represents the total number of VRRP packets received by virtual router with a priority of '0'.
Zero Priority Packets Sent	Represents the total number of VRRP packets sent by the virtual router with a priority of '0'.
Invalid Type Packets Received	Represents the total number of VRRP packets received by the virtual router with invalid 'type' field.
Address List Errors	Represents the total number of VRRP packets received for which address list does not match the locally configured list for the virtual router.
Invalid Authentication Type	Represents the total number of VRRP packets received with unknown authentication type.
Authentication Type Mismatch	Represents the total number of VRRP advertisements received for which 'auth type' not equal to locally configured one for this virtual router.
Packet Length Errors	Represents the total number of VRRP packets received with packet length less than length of VRRP header.

show ip vrrp

This command displays whether VRRP functionality is enabled or disabled on the FASTPATH switch. It also displays some global parameters which are required for monitoring This command takes no options.

Format	show ip vrrp
Modes	Privileged EXEC User EXEC

TABLE 4-13 Entry Definitions for *show ip vrrp*
Entry	Definition
VRRP Admin Mode	Displays the administrative mode for VRRP functionality on the switch.
Router Checksum Errors	Represents the total number of VRRP packets received with an invalid VRRP checksum value.
Router Version Errors	Represents the total number of VRRP packets received with Unknown or unsupported version number.
Router VRID Errors	Represents the total number of VRRP packets received with invalid VRID for this virtual router.

show ip vrrp interface

This command displays all configuration information and VRRP router statistics of a virtual router configured on a specific interface.

Format	show ip vrrp interface <slot/port> <vrid>
Modes	Privileged EXEC User EXEC

TABLE 4-14 Entry Definitions for *show ip vrrp interface*
Entry	Definition
IP Address	This field represents the configured IP Address for the Virtual router.
VMAC address	Represents the VMAC address of the specified router.
Authentication type	Represents the authentication type for the specific virtual router.
Priority	Represents the priority value for the specific virtual router.
Advertisement interval	Represents the advertisement interval for the specific virtual router.
Pre-Empt Mode	Is the preemption mode configured on the specified virtual router.
Administrative Mode	Represents the status (Enable or Disable) of the specific router.
State	Represents the state (Master/backup) of the virtual router.

show ip vrrp interface brief

This command displays information about each virtual router configured on the FASTPATH switch. This command takes no options. It displays information about each virtual router.

Format	show ip vrrp interface brief
Modes	Privileged EXEC User EXEC

TABLE 4-15 Entry Definitions for *show ip vrrp interface brief*
Entry	Definition
Interface	Valid slot and port number separated by forward slashes.
VRID	Represents the router ID of the virtual router.
IP Address	The virtual router IP address.
Mode	Represents whether the virtual router is enabled or disabled.
State	Represents the state (Master/backup) of the virtual router.

VRRP Tracking Commands

This section describes the commands for tracking VRRP. The configuration of VRRP tracking is accomplished with two logical steps:

1. Configure the events that can impact VRRP priority change by defining tracking objects.

2. Link between VRRP priority changes and tracking objects by specifying VRRP priority change for state change in the tracked objects.

A track command object can track an interface property or IP layer properties. An interface might be tracked by its line-protocol state (up/down) or by its IP routing state (enable/disable). Use the commands in this section according to the preferred tracking method.

`track interface line-protocol`

This command tracks the link state of an interface. The object will be up when the interface is linked.

Default	none
Format	track <object-number> interface <unit/port> line-protocol
Modes	Global Config

`track interface` `ip routing`

This command tracks the state of a local ip route.

Default	none
Format	track <object-number> interface <unit/port> ip routing
Modes	Global Config

An IP-routing object is considered up when the following criteria exists:

IP routing is enabled and active on the interface

Interface line-protocol state is up

Interface IP address is known (The IP address is configured or received through the Dynamic Host Configuration Protocol (DHCP) or IP Control Protocol (IPCP) negotiation.)

An IP-routing object is considered down when one of the following criteria exist:

IP routing is disabled globally

Interface line-protocol state is down

Interface IP address is unknown (The IP address is not configured or received through DHCP or IPCP negotiation.)

`track ip route reachability`

This command tracks the state of a local ip route.

Default	none
Format	track <object-number> ip route <ip-address/prefix-length> reachability
Modes	Global Config

`no` `track`

This command removes the track with the given object number..

Format	no track <object-number>
Modes	Global Config

`vrrp`

This command assocates a track object with a VRRP instance. When the tracked object is down, the VRRP instance’s priority will be decremented by <decrement priority>..

Format	vrrp <vrID> track <object-number> <decrement priority>
Modes	Global Config

`vrrp`

This command removes the specified track object from a specificed VRRP instance..

Format	no vrrp <vrID> track <object-number>
Modes	Global Config

show track

This command displays all configuration information for VRRP track objects.

Format	show track <object-number>
Modes	Privileged EXEC User EXEC

TABLE 4-16 Entry Definitions for *show track*
Entry	Definition
Interface	Represents the interface the track object is monitoring.
Track ID	Represents the tracked objects ID number.
Attribute	Represents this particular track object’s type.

show ip vrrp track

This command displays the current status of all tracks associated with <vrID>.

Format	show ip vrrp track <vrID>
Modes	Privileged EXEC User EXEC

TABLE 4-17 Entry Definitions for *show ip vrrp track*
Entry	Definition
Priority Dec	Represents the amount the given track object is decrementing the priority of the VRRP instance.
Interface	Represents the interface the track object is monitoring.
Track ID	Represents the tracked objects ID number.
Attribute	Represents this particular track object’s type.

DHCP and BOOTP Relay Commands

This section describes the commands you use to configure BootP/DHCP Relay on the switch. A DHCP relay agent operates at Layer 3 and forwards DHCP requests and replies between clients and servers when they are not on the same physical subnet.

bootpdhcprelay cidoptmode

This command enables the circuit ID option mode for BootP/DHCP Relay on the system.

Default	disabled
Format	bootpdhcprelay cidoptmode
Mode	Global Config

no bootpdhcprelay cidoptmode

This command disables the circuit ID option mode for BootP/DHCP Relay on the system.

Format	no bootpdhcprelay cidoptmode
Mode	Global Config

bootpdhcprelay enable

This command enables the forwarding of relay requests for BootP/DHCP Relay on the system.

Default	disabled
Format	bootpdhcprelay enable
Mode	Global Config

no bootpdhcprelay enable

This command disables the forwarding of relay requests for BootP/DHCP Relay on the system.

Format	no bootpdhcprelay enable
Mode	Global Config

bootpdhcprelay maxhopcount

This command configures the maximum allowable relay agent hops for BootP/DHCP Relay on the system. The <hops> parameter has a range of 1 to 16.

Default	4
Format	bootpdhcprelay maxhopcount <1-16>
Mode	Global Config

no bootpdhcprelay maxhopcount

This command configures the default maximum allowable relay agent hops for BootP/DHCP Relay on the system.

Format	no bootpdhcprelay maxhopcount
Mode	Global Config

bootpdhcprelay minwaittime

This command configures the minimum wait time in seconds for BootP/DHCP Relay on the system. When the BOOTP relay agent receives a BOOTREQUEST message, it MAY use the seconds-since-client-began-booting field of the request as a factor in deciding whether to relay the request or not. The parameter has a range of 0 to 100 seconds.

Default	0
Format	bootpdhcprelay minwaittime <0-100>
Mode	Global Config

no bootpdhcprelay minwaittime

This command configures the default minimum wait time in seconds for BootP/DHCP Relay on the system.

Format	no bootpdhcprelay minwaittime
Mode	Global Config

bootpdhcprelay serverip

This command configures the server IP Address for BootP/DHCP Relay on the system. The <ipaddr> parameter is an IP address in a 4-digit dotted decimal format.

Default	0.0.0.0
Format	bootpdhcprelay serverip <ipaddr>
Mode	Global Config

no bootpdhcprelay serverip

This command configures the default server IP Address for BootP/DHCP Relay on the system.

Format	no bootpdhcprelay serverip
Mode	Global Config

show bootpdhcprelay

This command displays the BootP/DHCP Relay information.

Format	show bootpdhcprelay
Modes	Privileged EXEC User EXEC

TABLE 4-18 Entry Definitions for *show bootpdhcprelay*
Entry	Definition
Maximum Hop Count	Is the maximum allowable relay agent hops.
Minimum Wait Time (Seconds)	Is the minimum wait time.
Admin Mode	Represents whether relaying of requests is enabled or disabled.
Server IP Address	Is the IP Address for the BootP/DHCP Relay server.
Circuit Id Option Mode	Is the DHCP circuit Id option which may be enabled or disabled.
Requests Received	Is the number or requests received.
Requests Relayed	Is the number of requests relayed.
Packets Discarded	Is the number of packets discarded.

Open Shortest Path First (OSPF) Commands

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

router ospf

Use this command to enter Router OSPF mode.

Format	router ospf
Mode	Global Config

enable (OSPF)

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

Default	enabled
Format	enable
Mode	Router OSPF Config

no enable (OSPF)

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

Format	no enable
Mode	Router OSPF Config

ip ospf

This command enables OSPF on a router interface.

Default	disabled
Format	ip ospf
Mode	Interface Config

no ip ospf

This command disables OSPF on a router interface.

Format	no ip ospf
Mode	Interface Config

1583compatibility

This command enables OSPF 1583 compatibility.

Note - 1583 compatibility mode is enabled by default. If all OSPF routers in the routing domain are capable of operating according to RFC 2328, OSPF 1583 compatibility mode should be disabled.

Default	enabled
Format	1583compatibility
Mode	Router OSPF Config

no 1583compatibility

This command disables OSPF 1583 compatibility.

Format	no 1583compatibility
Mode	Router OSPF Config

area default-cost (OSPF)

This command configures the default cost for the stub area. You must specify the area ID and an integer value between 1-16777215.

Format	area <areaid> default-cost <1-16777215>
Mode	Router OSPF Config

area nssa (OSPF)

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

Format	area <areaid> nssa
Mode	Router OSPF Config

no area nssa

This command disables nssa from the specified area id.

Format	no area <areaid> nssa
Mode	Router OSPF Config

area nssa default-info-originate (OSPF)

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 ****. 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 OSPF Config

area nssa no-redistribute (OSPF)

This command configures the NSSA Area Border router (ABR) so that learned external routes will not be redistributed to the NSSA.

Format	area <areaid> nssa no-redistribute
Mode	Router OSPF Config

area nssa no-summary (OSPF)

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

Format	area <areaid> nssa no-summary
Mode	Router OSPF Config

area nssa translator-role (OSPF)

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 OSPF Config

area nssa translator-stab-intv (OSPF)

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 OSPF Config

area range (OSPF)

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 <ipaddr> <subnetmask> {summarylink \| nssaexternallink} [advertise \| not-advertise]
Mode	Router OSPF 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 <ipaddr> <subnetmask>
Mode	Router OSPF Config

area stub (OSPF)

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 OSPF Config

no area stub

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

Format	no area <areaid> stub
Mode	Router OSPF Config

area stub no-summary (OSPF)

This command configures the Summary LSA mode for the stub area identified by <areaid>. Use this command to prevent LSA Summaries from being sent.

Default	disabled
Format	area <areaid> stub no-summary
Mode	Router OSPF Config

no area stub no-summary

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

Format	no area <areaid> stub no-summary
Mode	Router OSPF Config

area virtual-link (OSPF)

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 OSPF 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 OSPF Config

area virtual-link authentication

This command configures the authentication type and key for the OSPF virtual interface identified by <areaid> and <neighbor>. The <neighbor> parameter is the Router ID of the neighbor. The value for <type> is either none, simple, or encrypt. The [key] is composed of standard displayable, non-control keystrokes from a Standard 101/102-key keyboard. The authentication key must be 8 bytes or less if the authentication type is simple. If the type is encrypt, the key may be up to 256 bytes. Unauthenticated interfaces do not need an authentication key. If the type is encrypt, a key id in the range of 0 and 255 must be specified.The default value for authentication type is none. Neither the default password key nor the default key id are configured.

Default	none
Format	area <areaid> virtual-link <neighbor> authentication {none \| {simple <key>} \| {encrypt <key> <keyid>}}
Mode	Router OSPF Config

no area virtual-link authentication

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

Format	no area <areaid> virtual-link <neighbor> authentication
Mode	Router OSPF Config

area virtual-link dead-interval (OSPF)

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 OSPF 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 OSPF Config

area virtual-link hello-interval (OSPF)

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 <1-65535>
Mode	Router OSPF 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 OSPF Config

area virtual-link retransmit-interval (OSPF)

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 OSPF 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 OSPF Config

area virtual-link transmit-delay (OSPF)

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 OSPF Config

no area virtual-link transmit-delay

This command resets the default transmit delay for the OSPF virtual interface to the default value.

Format	no area <areaid> virtual-link <neighbor> transmit-delay
Mode	Router OSPF Config

default-information originate (OSPF)

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 OSPF Config

no default-information originate (OSPF)

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

Format	no default-information originate [metric] [metric-type]
Mode	Router OSPF Config

default-metric (OSPF)

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

Format	default-metric <1-16777214>
Mode	Router OSPF Config

no default-metric (OSPF)

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

Format	no default-metric
Mode	Router OSPF Config

distance ospf (OSPF)

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 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 OSPF Config

no distance ospf

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

Format	no distance ospf {intra \| inter \| type1 \| type2}
Mode	Router OSPF Config

distribute-list out (OSPF)

Use this command to specify the access list to filter routes received from the source protocol.

Format	distribute-list <1-199> out {rip \| bgp \| static \| connected}
Mode	Router OSPF Config

no distribute-list out

Use this command to specify the access list to filter routes received from the source protocol.

Format	no distribute-list <1-199> out {rip \| bgp \| static \| connected}
Mode	Router OSPF Config

exit-overflow-interval (OSPF)

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 OSPF Config

no exit-overflow-interval

This command configures the default exit overflow interval for OSPF.

Format	no exit-overflow-interval
Mode	Router OSPF Config

external-lsdb-limit (OSPF)

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 OSPF Config

no external-lsdb-limit

This command configures the default external LSDB limit for OSPF.

Format	no external-lsdb-limit
Mode	Router OSPF Config

ip ospf areaid

This command sets the OSPF area to which the specified router interface belongs. The <areaid> is an IP 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	ip ospf areaid <areaid>
Mode	Interface Config

ip ospf authentication

This command sets the OSPF Authentication Type and Key for the specified interface. The value of <type> is either none, simple or encrypt. The [key] is composed of standard displayable, non-control keystrokes from a Standard 101/102-key keyboard. The authentication key must be 8 bytes or less if the authentication type is simple. If the type is encrypt, the key may be up to 256 bytes. If the type is encrypt a <keyid> in the range of 0 and 255 must be specified. Unauthenticated interfaces do not need an authentication key or authentication key ID.

Default	none
Format	ip ospf authentication {none \| {simple <key>} \| {encrypt <key> <keyid>}}
Mode	Interface Config

no ip ospf authentication

This command sets the default OSPF Authentication Type for the specified interface.

Format	no ip ospf authentication
Mode	Interface Config

ip ospf cost

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

Default	10
Format	ip ospf cost <1-65535>
Mode	Interface Config

no ip ospf cost

This command configures the default cost on an OSPF interface.

Format	no ip ospf cost
Mode	Interface Config

ip 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	ip ospf dead-interval <seconds>
Mode	Interface Config

no ip ospf dead-interval

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

Format	no ip ospf dead-interval
Mode	Interface Config

ip 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 range from 1 to 65535.

Default	10
Format	ip ospf hello-interval <seconds>
Mode	Interface Config

no ip ospf hello-interval

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

Format	no ip ospf hello-interval
Mode	Interface Config

ip 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	ip ospf priority <0-255>
Mode	Interface Config

no ip ospf priority

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

Format	no ip ospf priority
Mode	Interface Config

ip 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	ip ospf retransmit-interval <0-3600>
Mode	Interface Config

no ip ospf retransmit-interval

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

Format	no ip ospf retransmit-interval
Mode	Interface Config

ip 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	ip ospf transmit-delay <1-3600>
Mode	Interface Config

no ip ospf transmit-delay

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

Format	no ip ospf transmit-delay
Mode	Interface Config

ip 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	ip ospf mtu-ignore
Mode	Interface Config

no ip ospf mtu-ignore

This command enables the OSPF MTU mismatch detection.

Format	no ip ospf mtu-ignore
Mode	Interface Config

router-id (OSPF)

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 OSPF Config

redistribute (OSPF)

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

Default	metric--unspecified type--2 tag--0
Format	redistribute {rip \| bgp \| static \| connected} [metric <0-16777214>] [metric-type {1 \| 2}] [tag <0-4294967295>] [subnets]
Mode	Router OSPF Config

no redistribute

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

Format	no redistribute {rip \| bgp \| static \| connected} [metric] [metric-type] [tag] [subnets]
Mode	Router OSPF Config

maximum-paths (OSPF)

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 OSPF 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 OSPF Config

timers spf

Use this command to configure the SPF delay time and hold time. The valid range for both parameters is 0-65535 seconds.

Default	delay-time--5 hold-time--10
Format	timers spf <delay-time> <hold-time>
Mode	Router OSPF Config

trapflags (OSPF)

This command enables OSPF traps.

Default	enabled
Format	trapflags
Mode	Router OSPF Config

no trapflags

This command disables OSPF traps.

Format	no trapflags
Mode	Router OSPF Config

show ip ospf

This command displays information relevant to the OSPF router.

Format	show ip ospf
Mode	Privileged EXEC

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

TABLE 4-19 Entry Definitions for *show ip ospf*
Entry	Definition
Router ID	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 learnt 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).
RFC 1583 Compatibility	Reflects whether 1583 compatibility is enabled or disabled. This is a configured value.
ABR Status	Shows whether the router is an OSPF Area Border Router.
Exit Overflow Interval	Shows the number of seconds that, after entering OverflowState, a router will attempt to leave OverflowState.
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 ip ospf area

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

Format	show ip ospf area <areaid>
Modes	Privileged EXEC User EXEC

TABLE 4-20 Entry Definitions for *show ip 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 LSA's.
Area LSA Checksum	A number representing the Area LSA Checksum for the specified AreaID excluding the external (LS type 5) link-state advertisements.
Import Summary LSAs	Shows whether to import summary LSAs.
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 ip ospf border-routers

This command displays the internal OSPF routing table entries to an Area Border Router (ABR) and Autonomous System Boundary Router (ASBR).

Format	show ip ospf border-routers
Modes	User EXEC Privileged EXEC

TABLE 4-21 Entry Definitions for *show ip 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 ip ospf database

This command displays information about the link state database when OSPF 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 optional parameters to specify the type of link state advertisements to display.

Use asbr-summary to show the autonomous system boundary router (ASBR) summary LSAs. Use external to display the external LSAs.

Use network to display the network LSAs.

Use nssa-external to display NSSA external LSAs.

Use router to display router LSAs.

Use summary to show the LSA database summary information.

Use <lsid> to specify the link state ID (LSID). The value of <lsid> can be an IP address or an integer in the range of 0-4294967295.

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.

Format	show ip ospf [<areaid>] database [{asbr-summary \| external \| network \| nssa-external \| router \| summary}] [<lsid>] [{adv-router [<rtrid>] \| self-originate}]
Modes	Privileged EXEC User EXEC

For each link-type and area, the following information is displayed only if OSPF is enabled.

TABLE 4-22 Entry Definitions for *show ip ospf database*
Entry	Definition
Link Id	Is a number that uniquely identifies an LSA that a router originates from all other self originated LSA's 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 ip ospf database database-summary

Use this command to display the number of each type of LSA in the database for each area and for the router. The command also displays the total number of LSAs in the database.

Format	show ip ospf database database-summary
Modes	Privileged EXEC User EXEC

TABLE 4-23 Entry Definitions for *show ip ospf database database-summary*
Entry	Definition
Router	Total number of router LSAs in the OSPF link state database.
Network	Total number of network LSAs in the OSPF link state database.
Summary Net	Total number of summary network LSAs in the database.
Summary ASBR	Number of summary ASBR LSAs in the database.
Type-7 Ext	Total number of Type-7 external LSAs in the database.
Self-Originated Type-7	Total number of self originated AS external LSAs in the OSPFv3 link state database.
Opaque Link	Number of opaque link LSAs in the database.
Opaque Area	Number of opaque area LSAs in the database.
Subtotal	Number of entries for the identified area.
Total	Number of entries for all areas.

show ip ospf interface

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

Format	show ip ospf interface {<slot/port> \| loopback <loopback-id>}
Modes	Privileged EXEC User EXEC

TABLE 4-24 Entry Definitions for *show ip ospf interface*
Entry	Definition
IP Address	Represents the IP address for the specified interface.
Subnet Mask	A mask of the network and host portion of the IP address for the OSPF interface.
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	A number representing the OSPF Priority for the specified interface.
Retransmit Interval	A number representing the OSPF Retransmit Interval for the specified interface.
Hello Interval	A number representing the OSPF Hello Interval for the specified interface.
Dead Interval	A number representing the OSPF Dead Interval for the specified interface.
LSA Ack Interval	A number representing the OSPF LSA Acknowledgement Interval for the specified interface.
Transit Delay Interval	A number representing the OSPF Transit Delay for the specified interface.
Authentication Type	The OSPF Authentication Type for the specified interface are: none, simple, and encrypt. The following information is displayed only if OSPF is enabled.
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 ip ospf interface brief

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

Format	show ip ospf interface brief
Modes	Privileged EXEC User EXEC

TABLE 4-25 Entry Definitions for *show ip ospf 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	A number representing the OSPF Priority for the specified interface.
Hello Interval	A number representing the OSPF Hello Interval for the specified interface.
Dead Interval	A number representing the OSPF Dead Interval for the specified interface.
Retransmit Interval	A number representing the OSPF Retransmit Interval for the specified interface.
Retransmit Delay Interval	A number representing the OSPF Transit Delay for the specified interface.
LSA Ack Interval	A number representing the OSPF LSA Acknowledgement Interval for the specified interface.

show ip ospf interface stats

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

Format	show ip ospf interface stats <slot/port>
Modes	Privileged EXEC User EXEC

TABLE 4-26 Entry Definitions for *show ip ospf interface stats*
Entry	Definition
OSPF Area ID	The area id of this OSPF interface.
Area Border Router Count	The total number of area border routers reachable within this area. This is initially zero, and is calculated in each SPF pass.
AS Border Router Count	The total number of Autonomous System border routers reachable within this area.
Area LSA Count	The total number of link-state advertisements in this area's link-state database, excluding AS External LSAs.
IP Address	The IP address associated with this OSPF interface.
OSPF 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.
External LSA Count	The number of external (LS type 5) link-state advertisements in the link-state database.

show ip 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 ip ospf neighbor [interface <slot/port>] [<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 4-27 Entry Definitions for *show ip 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.
IP Address	Shows the IP address 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	Valid slot and port number separated by forward slashes.
Neighbor IP Address	Shows the IP address of the neighbor router.
Interface Index	Shows the interface ID of the neighbor router.
Area ID	Shows the area ID of the OSPF area associated with the interface.
Options	An integer value that indicates the optional OSPF capabilities supported by the neighbor. The neighbor's optional OSPF capabilities are also 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 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.
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	The 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 ip 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 ip ospf range <areaid>
Modes	Privileged EXEC User EXEC

TABLE 4-28 Entry Definitions for *show ip 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. Advertisement has two possible settings: enabled or disabled.

show ip ospf statistics

This command displays information about recent Shortest Path First (SPF) calculations. The SPF is the OSPF routing table calculation. The output lists the number of times the SPF has run for each OSPF area. A table follows this information. For each of the 15 most recent SPF runs, the table lists how long ago the SPF ran, how long the SPF took, and the reasons why the SPF was scheduled.

Format	show ip ospf statistics
Modes	Privileged EXEC User EXEC

TABLE 4-29 Entry Definitions for *show ip ospf statistics*
Entry	Definition
Delta T	How long ago the SPF ran. The time is in the format hh:mm:ss, giving the hours, minutes, and seconds since the SPF run.
SPF Duration	How long the SPF took in milliseconds.
Reason	The reason the SPF was scheduled. Reason codes are as follows: R - a router LSA has changed N - a network LSA has changed SN - a type 3 network summary LSA has changed SA - a type 4 ASBR summary LSA has changed X - a type 5 or type 7 external LSA has changed

show ip 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 ip ospf stub table
Modes	Privileged EXEC User EXEC

TABLE 4-30 Entry Definitions for *show ip stub table*
Entry	Definition
Area ID	Is a 32-bit identifier for the created stub area.
Type of Service	Is the type of service associated with the stub metric. FASTPATH only supports Normal TOS.
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 ip 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 ip ospf virtual-link <areaid> <neighbor>
Modes	Privileged EXEC User EXEC

TABLE 4-31 Entry Definitions for *show ip 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	The configured authentication type of the OSPF virtual interface.
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 ip ospf virtual-link brief

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

Format	show ip ospf virtual-link brief
Modes	Privileged EXEC User EXEC

TABLE 4-32 Entry Definitions for *show ip ospf virtual-link brief*
Entry	Definition
Area Id	The area id of the requested OSPF area.
Neighbor	The neighbor interface of the OSPF virtual interface.
Hello Interval	The configured hello interval for the OSPF virtual interface.
Dead Interval	The configured dead interval for the OSPF virtual interface.
Retransmit Interval	The configured retransmit interval for the OSPF virtual interface.
Transit Delay	The configured transit delay for the OSPF virtual interface.

Routing Information Protocol (RIP) Commands

This section describes the commands you use to view and configure RIP, which is a distance-vector routing protocol that you use to route traffic within a small network.

router rip

Use this command to enter Router RIP mode.

Format	router rip
Mode	Global Config

enable (RIP)

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

Default	enabled
Format	enable
Mode	Router RIP Config

no enable (RIP)

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

Format	no enable
Mode	Router RIP Config

ip rip

This command enables RIP on a router interface.

Default	disabled
Format	ip rip
Mode	Interface Config

no ip rip

This command disables RIP on a router interface.

Format	no ip rip
Mode	Interface Config

auto-summary

This command enables the RIP auto-summarization mode.

Default	disabled
Format	auto-summary
Mode	Router RIP Config

no auto-summary

This command disables the RIP auto-summarization mode.

Format	no auto-summary
Mode	Router RIP Config

default-information originate (RIP)

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

Format	default-information originate
Mode	Router RIP Config

no default-information originate (RIP)

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

Format	no default-information originate
Mode	Router RIP Config

default-metric (RIP)

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

Format	default-metric <0-15>
Mode	Router RIP Config

no default-metric (RIP)

This command is used to reset the default metric of distributed routes to its default value.

Format	no default-metric
Mode	Router RIP Config

distance rip

This command sets the route preference value of RIP in the router. Lower route preference values are preferred when determining the best route. A route with a preference of 255 cannot be used to forward traffic.

Default	15
Format	distance rip <1-255>
Mode	Router RIP Config

no distance rip

This command sets the default route preference value of RIP in the router.

Format	no distance rip
Mode	Router RIP Config

distribute-list out (RIP)

This command is used to specify the access list to filter routes received from the source protocol.

Default	0
Format	distribute-list <1-199> out {ospf \| bgp \| static \| connected}
Mode	Router RIP Config

no distribute-list out

This command is used to specify the access list to filter routes received from the source protocol.

Format	no distribute-list <1-199> out {ospf \| bgp \| static \| connected}
Mode	Router RIP Config

ip rip authentication

This command sets the RIP Version 2 Authentication Type and Key for the specified interface. The value of <type> is either none, simple, or encrypt. The value for authentication key [key] must be 16 bytes or less. The [key] is composed of standard displayable, non-control keystrokes from a Standard 101/102-key keyboard. If the value of <type> is encrypt, a keyid in the range of 0 and 255 must be specified. Unauthenticated interfaces do not need an authentication key or authentication key ID.

Default	none
Format	ip rip authentication {none \| {simple <key>} \| {encrypt <key> <keyid>}}
Mode	Interface Config

no ip rip authentication

This command sets the default RIP Version 2 Authentication Type for an interface.

Format	no ip rip authentication
Mode	Interface Config

ip rip receive version

This command configures the interface to allow RIP control packets of the specified version(s) to be received.

The value for <mode> is one of: rip1 to receive only RIP version 1 formatted packets, rip2 for RIP version 2, both to receive packets from either format, or none to not allow any RIP control packets to be received.

Default	both
Format	ip rip receive version {rip1 \| rip2 \| both \| none}
Mode	Interface Config

no ip rip receive version

This command configures the interface to allow RIP control packets of the default version(s) to be received.

Format	no ip rip receive version
Mode	Interface Config

ip rip send version

This command configures the interface to allow RIP control packets of the specified version to be sent.

The value for <mode> is one of: rip1 to broadcast RIP version 1 formatted packets, rip1c (RIP version 1 compatibility mode) which sends RIP version 2 formatted packets via broadcast, rip2 for sending RIP version 2 using multicast, or none to not allow any RIP control packets to be sent.

Default	rip2
Format	ip rip send version {rip1 \| rip1c \| rip2 \| none}
Mode	Interface Config

no ip rip send version

This command configures the interface to allow RIP control packets of the default version to be sent.

Format	no ip rip send version
Mode	Interface Config

hostroutesaccept

This command enables the RIP hostroutesaccept mode.

Default	enabled
Format	hostroutesaccept
Mode	Router RIP Config

no hostroutesaccept

This command disables the RIP hostroutesaccept mode.

Format	no hostroutesaccept
Mode	Router RIP Config

split-horizon

This command sets the RIP split horizon mode. Split horizon is a technique for avoiding problems caused by including routes in updates sent to the router from which the route was originally learned. The options are: None - no special processing for this case. Simple - a route will not be included in updates sent to the router from which it was learned. Poisoned reverse - a route will be included in updates sent to the router from which it was learned, but the metric will be set to infinity.

Default	simple
Format	split-horizon {none \| simple \| poison}
Mode	Router RIP Config

no split-horizon

This command sets the default RIP split horizon mode.

Format	no split-horizon
Mode	Router RIP Config

redistribute (RIP)

This command configures RIP protocol to redistribute routes from the specified source protocol/routers. There are five possible match options. When you submit the command redistribute ospf match <match-type> the match-type or types specified are added to any match types presently being redistributed. Internal routes are redistributed by default.

Default

metric--not-configured
match--internal

Format

OSPF as source protocol:

redistribute ospf [metric <0-15>] [match [internal] [external 1] [external 2] [nssa-external 1] [nssa-external-2]]

Other source protocol:

redistribute {bgp | static | connected} [metric <0-15>]

Mode

Router RIP Config

no redistribute

This command de-configures RIP protocol to redistribute routes from the specified source protocol/routers.

Format	no redistribute {ospf \| bgp \| static \| connected} [metric] [match [internal] [external 1] [external 2] [nssa-external 1] [nssa-external-2]]
Mode	Router RIP Config

show ip rip

This command displays information relevant to the RIP router.

Format	show ip rip
Modes	Privileged EXEC User EXEC

TABLE 4-33 Entry Definitions for *show ip rip*
Entry	Definition
RIP Admin Mode	Enable or disable.
Split Horizon Mode	None, simple or poison reverse.
Auto Summary Mode	Enable or disable. If enabled, groups of adjacent routes are summarized into single entries, in order to reduce the total number of entries The default is enable.
Host Routes Accept Mode	Enable or disable. If enabled the router accepts host routes. The default is enable.
Global Route Changes	The number of route changes made to the IP Route Database by RIP. This does not include the refresh of a route's age.
Global queries	The number of responses sent to RIP queries from other systems.
Default Metric	Sets a default for the metric of redistributed routes.This field displays the default metric if one has already been set or blank if not configured earlier. The valid values are (1 to 15)
Default Route Advertise	The default route.

show ip rip interface brief

This command displays general information for each RIP interface. For this command to display successful results routing must be enabled per interface (i.e. ip rip).

Format	show ip rip interface brief
Modes	Privileged EXEC User EXEC

TABLE 4-34 Entry Definitions for *show ip rip interface brief*
Entry	Definition
Interface	Valid slot and port number separated by forward slashes.
IP Address	The IP source address used by the specified RIP interface.
Send Version	The RIP version(s) used when sending updates on the specified interface. The types are none, RIP-1, RIP-1c, RIP-2.
Receive Version	The RIP version(s) allowed when receiving updates from the specified interface. The types are none, RIP-1, RIP-2, Both
RIP Mode	RIP administrative mode of router RIP operation; enable activates, disable de-activates it.
Link State	The mode of the interface (up or down).

show ip rip interface

This command displays information related to a particular RIP interface.

Format	show ip rip interface <slot/port>
Modes	Privileged EXEC User EXEC

TABLE 4-35 Entry Definitions for *show ip rip interface*
Entry	Definition
Interface	Valid slot and port number separated by forward slashes. This is a configured value.
IP Address	The IP source address used by the specified RIP interface. This is a configured value.
Send version	The RIP version(s) used when sending updates on the specified interface. The types are none, RIP-1, RIP-1c, RIP-2. This is a configured value.
Receive version	The RIP version(s) allowed when receiving updates from the specified interface. The types are none, RIP-1, RIP-2, Both. This is a configured value.
Both RIP Admin Mode	RIP administrative mode of router RIP operation; enable activates, disable de-activates it. This is a configured value.
Link State	Indicates whether the RIP interface is up or down. This is a configured value.
Authentication Type	The RIP Authentication Type for the specified interface. The types are none, simple, and encrypt. This is a configured value.
Default Metric	A number which represents the metric used for default routes in RIP updates originated on the specified interface. This is a configured value. The following information will be invalid if the link state is down.
Bad Packets Received	The number of RIP response packets received by the RIP process which were subsequently discarded for any reason.
Bad Routes Received	The number of routes contained in valid RIP packets that were ignored for any reason.
Updates Sent	The number of triggered RIP updates actually sent on this interface.