From: James Matrisciano (jmatrisciano@kenttech.com)
Date: Thu Aug 18 2005 - 13:56:40 GMT-3
If I was to have my drothers in assigning a qos policy for voice traffic, I would go with this:
class-map match-any call-sig
match ip dscp cs3
match ip dscp af31
!
class-map match-all voice
match ip dscp ef
!
class-map match-any protocols
match ip dscp cs6
match ip dscp cs7
!
policy-map Voice_QoS
class voice
priority percent 25
!
class call-sig
bandwidth percent 5
!
class protocols
bandwidth percent 5
!
exit
You need to keep in mind that you have the call set up (either SCCP, H.323, SIP) as well as the actual RTP traffic. As well, with any access-list, you need to make sure not to drop any other packets that need to come across the line.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Hictor Fernandez
Sent: Thursday, August 18, 2005 12:42 PM
To: ccie2be; ccielab@groupstudy.com
Subject: Re: match protocol rtp audio
AFAIK,
using those commands you're matching RTP packets (IP/UDP traffic, inside RTP range, bearing specific payload types). Those have "nothing" to do with H.323, which, at least will use an initial TCP/IP connection (optionally, some additional UDP and/or TCPs, for H.245.0 and H.225.0, etc, depending on
H.323 version).
I'd say, no, it does not include it.
Best regards
Hictor
----- Original Message -----
From: "ccie2be" <ccie2be@nyc.rr.com>
To: "Group Study" <ccielab@groupstudy.com>
Sent: Thursday, August 18, 2005 2:39 PM
Subject: match protocol rtp audio
> Hi guys,
>
> Can someone confirm this:
>
> access-list 100 permit udp any any range 16384 32767 = match prot rtp
audio
>
> And, match prot rtp audio doesn't include the control H323 signaling
(tcp
> any any eq 1720).
>
> The Doc-CD is about as clear as mud on this:
>
> <quote>
>
> audio: Specifies matching by audio payload-type values in the range of 0
to
> 23. These payload-type values are reserved for audio traffic.
>
> <endquote>
>
>
http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123cgcr/qos_
> r/qos_m1g.htm#wp1112916
>
>
> TIA, Tim
>
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