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New Member

PIM-SM Join Messages

Hello,

I have two questions here on the above.

Are PIM joins sent multicast or unicast. Some docs says it's unicast, but I see it as multicast in my trace.

Also, If a flow maintains state for a period of time, do PIM-Join messages get sent periodically to the RP or root of the source, if so how often?

Many thx

Ken

2 REPLIES
New Member

Re: PIM-SM Join Messages

Pim joins are sent every minute, just like IGMP queries,

Regards

Ian

New Member

Re: PIM-SM Join Messages

First:Router sends Join message out the upstream interface to 224.0.0.13

Second:Once the shared tree is established,routers periodically send Join/Prune messages to upstream neighbors as a keepalive.The default period is 60 seconds.

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