Cisco Systems 3750E manual Ip pim rp-candidate interface-id, Group-list access-list-number, 42-23

Chapter 42 Configuring IP Multicast Routing

Configuring IP Multicast Routing

Configuring Candidate RPs

You can configure one or more candidate RPs. Similar to BSRs, the RPs should also have good connectivity to other devices and be in the backbone portion of the network. An RP can serve the entire IP multicast address space or a portion of it. Candidate RPs send candidate RP advertisements to the BSR. When deciding which devices should be RPs, consider these options:

•In a network of Cisco routers and multilayer switches where only Auto-RP is used, any device can be configured as an RP.

•In a network that includes only Cisco PIMv2 routers and multilayer switches and with routers from other vendors, any device can be used as an RP.

•In a network of Cisco PIMv1 routers, Cisco PIMv2 routers, and routers from other vendors, configure only Cisco PIMv2 routers and multilayer switches as RPs.

Beginning in privileged EXEC mode, follow these steps to configure your switch to advertise itself as a PIMv2 candidate RP to the BSR. This procedure is optional.

	Command	Purpose
Step 1
	configure terminal	Enter global configuration mode.
Step 2
	ip pim rp-candidate interface-id	Configure your switch to be a candidate RP.
	[group-listaccess-list-number]	• For interface-id,specify the interface whose associated IP address
		is advertised as a candidate RP address. Valid interfaces include
		physical ports, port channels, and VLANs.
		• (Optional) For group-listaccess-list-number, enter an IP standard
		access list number from 1 to 99. If no group-list is specified, the
		switch is a candidate RP for all groups.
Step 3
	access-listaccess-list-number {deny	Create a standard access list, repeating the command as many times as
	permit} source [source-wildcard]	necessary.
		• For access-list-number, enter the access list number specified in
		Step 2.
		• The deny keyword denies access if the conditions are matched. The
		permit keyword permits access if the conditions are matched.
		• For source, enter the number of the network or host from which the
		packet is being sent.
		• (Optional) For source-wildcard, enter the wildcard bits in dotted
		decimal notation to be applied to the source. Place ones in the bit
		positions that you want to ignore.
		Recall that the access list is always terminated by an implicit deny
		statement for everything.
Step 4
	end	Return to privileged EXEC mode.
Step 5
	show running-config	Verify your entries.
Step 6
	copy running-config startup-config	(Optional) Save your entries in the configuration file.

To remove this device as a candidate RP, use the no ip pim rp-candidateinterface-idglobal configuration command.

	Catalyst 3750-E and 3560-E Switch Software Configuration Guide
OL-9775-02		42-23