Configuring Multicast (MSDP)
You can use the Multicast Source Discovery Protocol (MSDP) to exchange multicast source information between multiple Border Gateway Protocol (BGP) enabled Protocol Independent Multicast (PIM) sparse-mode domains. In addition, MSDP can be used to create an Anycast-RP configuration to provide RP redundancy and load sharing. For information about BGP, see the Cisco Nexus 9000 Series NX-OS Unicast Routing Configuration Guide.
When a receiver joins a group that is transmitted by a source in another domain, the rendezvous point (RP) sends PIM join messages in the direction of the source to build a shortest path tree. The designated router (DR) sends packets on the sourcetree within the source domain, which can travel through the RP in the source domain and along the branches of the sourcetree to other domains. In domains where there are receivers, RPs in those domains can be on the sourcetree. The peering relationship is conducted over a TCP connection.
This section contains payload examples and CLIs to demonstrate how to use the NX-API REST API to configure MSDP on Cisco Nexus 3000 and 9000 Series switches and to show how the REST APIs correspond to the CLI commands.
For more information about configuring MSDP, see the Cisco Nexus 9000 Series NX-OS Multicast Routing Configuration Guide, Release 7.x.
See also Configuring Multicast (PIM)