Chapter 38 Configuring IP Unicast Routing

Configuring RIP

 

Command

Purpose

Step 5

 

 

neighbor ip-address

(Optional) Define a neighboring router with which to exchange routing

 

 

information. This step allows routing updates from RIP (normally a

 

 

broadcast protocol) to reach nonbroadcast networks.

Step 6

 

 

offset list [access-list number name]

(Optional) Apply an offset list to routing metrics to increase incoming

 

{in out} offset [type number]

and outgoing metrics to routes learned through RIP. You can limit the

 

 

offset list with an access list or an interface.

Step 7

 

 

timers basic update invalid holddown

(Optional) Adjust routing protocol timers. Valid ranges for all timers are

 

flush

0 to 4294967295 seconds.

 

 

update—The time between sending routing updates. The default is

 

 

30 seconds.

 

 

invalid—The timer after which a route is declared invalid. The

 

 

default is 180 seconds.

 

 

holddown—The time before a route is removed from the routing

 

 

table. The default is 180 seconds.

 

 

flush—The amount of time for which routing updates are postponed.

 

 

The default is 240 seconds.

Step 8

 

 

version {1 2}

(Optional) Configure the switch to receive and send only RIP Version 1

 

 

or RIP Version 2 packets. By default, the switch receives Version 1 and 2

 

 

but sends only Version 1.

 

 

You can also use the interface commands ip rip {send receive} version

 

 

1 2 1 2} to control what versions are used for sending and receiving on

 

 

interfaces.

Step 9

 

 

no auto summary

(Optional) Disable automatic summarization. By default, the switch

 

 

summarizes subprefixes when crossing classful network boundaries.

 

 

Disable summarization (RIP Version 2 only) to advertise subnet and host

 

 

routing information to classful network boundaries.

Step 10

 

 

no validate-update-source

(Optional) Disable validation of the source IP address of incoming RIP

 

 

routing updates. By default, the switch validates the source IP address of

 

 

incoming RIP routing updates and discards the update if the source

 

 

address is not valid. Under normal circumstances, disabling this feature

 

 

is not recommended. However, if you have a router that is off-network

 

 

and you want to receive its updates, you can use this command.

Step 11

 

 

output-delay delay

(Optional) Add interpacket delay for RIP updates sent.

 

 

By default, packets in a multiple-packet RIP update have no delay added

 

 

between packets. If you are sending packets to a lower-speed device, you

 

 

can add an interpacket delay in the range of 8 to 50 milliseconds.

Step 12

 

 

end

Return to privileged EXEC mode.

Step 13

 

 

show ip protocols

Verify your entries.

Step 14

 

 

copy running-config startup-config

(Optional) Save your entries in the configuration file.

 

 

 

To turn off the RIP routing process, use the no router rip global configuration command.

To display the parameters and current state of the active routing protocol process, use the show ip protocols privileged EXEC command. Use the show ip rip database privileged EXEC command to display summary address entries in the RIP database.

 

Catalyst 3750-E and 3560-E Switch Software Configuration Guide

38-22

OL-9775-02

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Image 882
Cisco Systems 3750E manual 38-22