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Inter-AS Multicast Using Static RPF Peers
As mentioned in RPF Rules of SA Messages, if an SA message is sent by an RPF peer, the message is accepted and forwarded to other MSDP peers. If you manually specify MSDP peers as static RPF peers to one another, these RPF peers accept SA messages without performing the RPF check.
Incorrect static RPF configurations may lead to loops of SA messages. Exercise caution when you configure static RPF peers. Static RPF peer relationships are usually set up among MSDP peers in multiple ASs.
Figure 6-8 Inter-AS multicast using static RPF peers
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The configuration plan is as follows:
- Configure an MSDP peer relationship between RP1 and RP2.
- Configure RP1 and RP2 as static RPF peers of each other.