Cisco Systems 3750E manual Ip dvmrp metric metric list, 42-40

Chapter 42 Configuring IP Multicast Routing

Configuring Basic DVMRP Interoperability Features

	Command	Purpose
Step 4
	ip dvmrp metric metric [list	Configure the metric associated with a set of destinations for DVMRP
	access-list-number] [[protocol process-id]	reports.
	[dvmrp]]	• For metric, the range is 0 to 32. A value of 0 means that the route
		is not advertised. A value of 32 is equivalent to infinity
		(unreachable).
		• (Optional) For list access-list-number, enter the access list number
		created in Step 2. If specified, only the multicast destinations that
		match the access list are reported with the configured metric.
		• (Optional) For protocol process-id, enter the name of the unicast
		routing protocol, such as eigrp, igrp, ospf, rip, static, or dvmrp,
		and the process ID number of the routing protocol. If specified,
		only routes learned by the specified routing protocol are advertised
		in DVMRP report messages.
		• (Optional) If specified, the dvmrp keyword allows routes from the
		DVMRP routing table to be advertised with the configured metric
		or filtered.
Step 5
	end	Return to privileged EXEC mode.
Step 6
	show running-config	Verify your entries.
Step 7
	copy running-config startup-config	(Optional) Save your entries in the configuration file.

To disable the metric or route map, use the no ip dvmrp metric metric [list access-list-number]

[[protocol process-id] [dvmrp]] or the no ip dvmrp metric metric route-mapmap-name interface configuration command.

A more sophisticated way to achieve the same results as the preceding command is to use a route map (ip dvmrp metric metric route-mapmap-nameinterface configuration command) instead of an access list. You subject unicast routes to route-map conditions before they are injected into DVMRP.

This example shows how to configure DVMRP interoperability when the PIM device and the DVMRP router are on the same network segment. In this example, access list 1 advertises the networks (198.92.35.0, 198.92.36.0, 198.92.37.0, 131.108.0.0, and 150.136.0.0) to the DVMRP router, and access list 2 prevents all other networks from being advertised (ip dvmrp metric 0 interface configuration command).

Switch(config-if)#interface gigabitethernet1/0/1

Switch(config-if)# ip address		131.119.244.244 255.255.255.0
Switch(config-if)# ip pim dense-mode
Switch(config-if)# ip dvmrp	metric 1		list 1
Switch(config-if)# ip dvmrp	metric 0		list 2
Switch(config-if)# exit
Switch(config)# access-list	1	permit	198.92.35.0 0.0.0.255
Switch(config)# access-list	1	permit	198.92.36.0 0.0.0.255
Switch(config)# access-list	1	permit	198.92.37.0 0.0.0.255
Switch(config)# access-list	1	permit	131.108.0.0 0.0.255.255
Switch(config)# access-list	1	permit	150.136.0.0 0.0.255.255
Switch(config)# access-list	1	deny	0.0.0.0 255.255.255.255
Switch(config)# access-list	2	permit	0.0.0.0 255.255.255.255

	Catalyst 3750-E and 3560-E Switch Software Configuration Guide
42-40	OL-9775-02