Configures the MSDP router to send SA request messages to the MSDP peer when a new member becomes active in a group.
| remoteaddr | Specifies the IP address of the MSDP peer from which the local router requests SA messages when a new member becomes active in a group, and MSDP has no cache entry for the group in the local database. |
| vr_name | Specifies the name of the virtual router on which the MSDP cache server is configured. If a virtual router name is not specified, it is extracted from the current CLI context. |
By default, the router does not send SA request messages to its MSDP peers when a new member joins a group and wants to receive multicast traffic. The new member simply waits to receive SA messages, which eventually arrive.
You can use this command to force a new member of a group to learn the current active multicast sources in a connected PIM-SM domain that are sending to a group. The router will send SA request messages to the specified MSDP peer when a new member joins a group and MSDP doesn‘t have a cache entry for that group in the local database. The peer replies with the information in an SA cache response message.
Note
An MSDP peer must exist before it can be configured as an SA cache server. The configure msdp sa-cache-server command accepts the value for remoteaddr only if it is an existing peer‘s IP address.The following example configures an MSDP cache server:
configure msdp sa-cache-server 172.19.34.5
This command was first available in ExtremeXOS 12.0.
This command is available on platforms that support the appropriate license. For complete information about software licensing, including how to obtain and upgrade your license and which licenses support the MSDP feature, see the Switch Engine v33.1.1 Licensing Guide document.