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Configuring Per-Source Active Source Limit

You can configure an active source limit for an address range as well as for a specific peer. A per-source active source limit uses an IP prefix and prefix length instead of a specific address. You can configure more than one per-source active source limit. The longest match determines the limit.



[edit protocols msdp]
source 10.1.1.1/32 {


active-source-limit {
maximum 10000;
}


}
source 10.1.0.0/16 {


active-source-limit {
maximum 500;
}


}
source 0.0.0.0/0 {


active-source-limit {
maximum 5;
}


}

In this example, the source 10.1.1.1 is allowed active sources for 10,000 groups. Any other source on the 10.1.0.0/16 network is allowed 500 groups. All other sources are allowed to source 5 active streams.

Per-source active source limits can be combined with active source limits at the peer, group, and global (instance) hierarchy level. Per-source limits are applied before any other type of active source limit. Limits are tested in the following order:

Per-source
Per-peer or group
Per-instance

An active source message must “pass” all limits established before being accepted. For example, if a source is configured with an active source limit of 10,000 active multicast groups and the instance is configured with a limit of 5,000 (and there are no other sources or limits configured), only 5,000 active source messages are accepted from this source.

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