Ken,

PIM messages are sent multicast, either to 224.0.0.2 or 224.0.0.13 
depending on the PIM version.

PIM Joins are sent periodically, every 60 seconds.

- Tom

[EMAIL PROTECTED] wrote:
> 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
> 
> 
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