To reduce Link State Database (LSDB) changes and Intermediate-System-to-Intermediate-System (IS-IS) processing, the switch advertises or withdraws the static data I-SIDs from the Shortest Path Bridging (SPB) fabric when you issue the apply command for the routed multicast policy. As a result, the switch triggers most of the IS-IS computation for the I-SIDs by user configuration and not by volatile network changes or UNI IGMP messages.
For Multi-area SPB boundary nodes, the static data I-SID multicast redistribution policy takes precedence over the Layer 2 multicast redistribution.
You can configure the static I-SID redistribution in the Multi-area SPB for any direction (home-to-remote or remote-to-home).
Multi-area SPB boundary nodes do not support static data I-SID configuration.
For more information, see the following sections: