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Beginner

Question about SIP traffic through Cisco 3640

Hi all,

I am trying to see if the traffic to/from port 5060 is passing through my router.

Is there any easy way to do this apart from port sniffing.

I need to see if my SIP RTP are going through the router.

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Beginner

If you don't have any traffic other than SIP/RTP you can do a "debug ip udp". This would show debugging like this.

Dec 13 14:47:49: UDP: sent src=xx.yy.163.70(5060), dst=192.168.2.45(5065), length=383

Dec 13 14:47:49: UDP: sent src=xx.yy.163.70(17063), dst=xx.yy.181.6(14565), length=56

Dec 13 14:47:49: UDP: rcvd src=xx.yy.181.6(14565), dst=xx.yy.163.70(17063), length=16

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Beginner

I'm not seing any traffic udp on port 5060 hitting the external interface using the "debug IP udp".

5060 is TCP though right? only RTP is UDP...?!?

So how could I see the SIP sessions on 5060 witting the router to confirm there getting at least there?

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