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Chapter 2

IP Multicast in a Campus Network

IP Multicast Large Campus Design

address 10.0.0.x 255.255.255.252 pim sparse-mode

pim rp-address 10.6.2.1 msdp peer 10.6.1.2 connect-source Loopback0

Identifies the TCP peer and source interface.

msdp cache-sa-state msdp originator-id Loopback0

Creates SA state (S,G). Sets RP address in SA messages to Loopback 0.

ip pim sparse-mode ! interface Vlanxx description VLANs for other L3 links

ip ip ! ip ip ! ip ip

The following example shows the multicast configuration for “6k-botright-core.”

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 ip pim sparse-mode ! interface Vlanxx description VLANs for other L3 links

ip ip ! ip ip ! ip ip

address 10.0.0.x 255.255.255.252 pim sparse-mode

pim rp-address 10.6.2.1 msdp peer 10.6.1.1 connect-source Loopback0

msdp cache-sa-state msdp originator-id Loopback0

Figure 2-8 provides a logical view of the MSDP configuration of the core switches.

Figure 2-8

Logical View of MSDP Configuration

MSDP

Lo0–10.6.1.1

Lo0–10.6.1.2

Lo1–10.6.2.1

Lo1–10.6.2.1

6k-botleft-core

6k-botright-core

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Cisco AVVID Network Infrastructure IP Multicast Design

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