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Chapter 2

IP Multicast in a Campus Network

IP Multicast Medium Campus Design

Core-Layer Switch Configuration

The following example shows the configuration of “6509-left-core.” This switch is configured for Anycast RP and is the HSRP standby device.

ip multicast-routing ! interface Loopback0

description MSDP local peer address ip address 10.6.1.1 255.255.255.255 ! interface Loopback1

description Anycast RP address ip address 10.6.2.1 255.255.255.255

! ! interface Vlanxx

Loopback 1 has same address on both the right and left routers.

description VLANs for other L3 links ip address 10.0.0.x 255.255.255.252 ip pim sparse-mode ! ip pim rp-address 10.6.2.1 ! ip msdp peer 10.6.1.2 connect-source Loopback0 ! ! ip msdp cache-sa-state ! ! ip msdp originator-id Loopback0

Identifies the address of the RP.

Enables MSDP and identifies the address of the MSDP peer.

Creates SA state (S,G). The SA cache entry is created when either MSDP peer has an active source.

Sets RP address in SA messages to be Loopback 0.

The following example shows the configuration of “6509-right-core.” This switch is configured for Anycast RP and is the HSRP active device.

ip multicast-routing ! interface Loopback0

description MSDP local peer address ip address 10.6.1.2 255.255.255.255 ! interface Loopback1

description Anycast RP address ip address 10.6.2.1 255.255.255.255

! ! interface Vlanxx

Loopback 1 has same address on both the right and left routers.

description VLANs for other L3 links ip address 10.0.0.x 255.255.255.252 ip pim sparse-mode ! ip pim rp-address 10.6.2.1 ! ip msdp peer 10.6.1.1 connect-source Loopback0 ! ! ! !

Identifies the address of the RP.

Enables MSDP and identifies the address of the MSDP peer. The connect-source identifies the primary interface used to source the TCP connection between peers.

Cisco AVVID Network Infrastructure IP Multicast Design

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