What does "match protocol sip" match?

Unanswered Question
Jun 30th, 2008

I'm allowing SIP traffic in to my network from outside using my 2821 ISR's "match protocol sip" statement in a class map and ACL. I'd like to know what criteria this statement uses to identify sip traffic.

Thanks!

P.S. "It matches sip traffic." is not quite what I'm after :) How does it recognise sip traffic?

I have this problem too.
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Kenneth Mohammed Mon, 06/30/2008 - 07:09

Hello Andrew,

I believe that the "match protocol sip" statement in your class-map is going to match all traffic that uses port 5060, which is the port that SIP talks on.

Hope that helped.

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