From: cannonr (cannonr@attbi.com)
Date: Thu Apr 10 2003 - 23:37:41 GMT-3
The port range used for Cisco VOIP devices is 16384 - 32767. For the ip rtp
command your first value is the low port number the second value should be
added to the first for the high range. 16384+16383=32767.
HTH
----- Original Message -----
From: "Niksa Tomulic" <ccie@otokrab.net>
To: "'Ccielab'" <ccielab@groupstudy.com>
Sent: Thursday, April 10, 2003 5:22 AM
Subject: VoIP UDP ports
> Hi,
> Reading trough QOS for VoIP, and using ACLs to identify VoIP traffic, I
> can't find definite reference about which ports VoIP traffic use.
> There are different examples by Cisco what I've seen so far:
>
> For sure there is TCP port 1720 which is used for H.323 signaling
> traffic, but: for VoIP itself I've seen different examples, and they all
> state "common UDP ports used by VoIP":
>
> EX 1
> access-list 100 permit udp any any range 16384 32767
>
> EX 2
> access-list 100 permit udp any any range 16384 32000
>
> And with this command, again different:
>
> ip rtp priority 16384 16383 40
>
> Any thoughts?
>
> Thanks,
> niksa
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