From: Scott Morris (swm@emanon.com)
Date: Sat Mar 19 2005 - 15:52:05 GMT-3
As you go through the examples, or a description in the configuration guide,
this will tell you how VoIP works. In the QoS section, the examples that
you find may be enough to let you in on that..
But after your e-mail here I poked around in the DocCD and actually did not
find the list I expected to with port numbers listed.... (Perhaps it moved,
or I'm going crazy after all)
H.323 as a protocol suite uses RTP for transporting multimedia traffic over
IP. Things are broken down into 16K ranges of ports.
Udp/16384-32767 is for voice
Udp/32768-49141 is for whiteboard
Udp/49152-65535 is for video
Looking at NBAR for "rtp audio" though seems like a really good way to do
things...
So my apologies, apparantly this one isn't as easy as I remember it being!
But look for config examples whenever they talk about voice and you'll
ilkely see some examples. Or look for the "ip rtp priority" command which
was designed for voice stuff before the MQC became popular. So those
examples will nail the ports.
HTH,
Scott
-----Original Message-----
From: simon hart [mailto:simon.hart@btinternet.com]
Sent: Saturday, March 19, 2005 1:09 PM
To: Scott Morris; mcodina@nwncable.com; ccielab@groupstudy.com
Subject: RE: VoIP
Hi Scott,
You mention that they can be found easy enough. I must say when it comes to
such detail, I do find it hard work finding it. For example, I have never
been able to find RTP port numbers (most port numbers can be found in the
QOS Configuration overview - NBAR).
Simon
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of Scott
Morris
Sent: 19 March 2005 14:53
To: mcodina@nwncable.com; ccielab@groupstudy.com
Subject: RE: VoIP
VoIP configuration itself is.... But I can't see any reason why QoS or
shaping/filtering stuff related to it would need to be out. It could be a
valid topic to hand you, but anything there you should already know from the
QoS portion. Any specifics (port numbers, etc.) you should be able to find
easily enough on the DocCD.
Scott
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
mcodina@nwncable.com
Sent: Saturday, March 19, 2005 9:44 AM
To: ccielab@groupstudy.com
Subject: VoIP
Hi,
Is VoX definitely out of the CCIE R&S Lab, including filtering or any other
topic related to it?
Thanks.
Mauricio
This archive was generated by hypermail 2.1.4 : Sun Apr 03 2005 - 17:56:48 GMT-3