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Chapter 2

IP Multicast in a Campus Network

IP Multicast Large Campus Design

IP Multicast Large Campus Design

This section provides a sample design for IP multicast in a large campus network. Multicast design in a large enterprise network can be difficult if the design is too granular. The optimal design provides fast-failover and a simplistic approach to traffic control. Although there are a large number of possible combinations in deploying multicast in a large campus and even more combinations for each type of multicast application, the sample design in this chapter focuses on keeping things simple and the traffic reliable.

Note

The large campus network also has a distinct distribution and core layer. The IP addressing, VLAN numbering, and HSRP numbering conventions are the same as those used in the small campus design.

For IP multicast in a large campus (shown in Figure 2-7): Use IGMP snooping enabled access-layer switches.

Enable PIM-SM on the distribution-layer switches that have their RPs defined as the Anycast RP address of the two RPs located on 6k-botleft-core and 6k-botright-core.

Reduce multicast state (S,G) from the leaf routers by keeping traffic on the shared tree. (Optional)

Place the RPs in the core-layer switches. Run PIM-SM and Anycast RP. A minimum of two RPs must be used to deploy Anycast RP.

Cisco AVVID Network Infrastructure IP Multicast Design

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