nanog mailing list archives

Re: Cisco 6500 QoS Priority Queuing (DSCP & EXP based)


From: Manu Chao <linux.yahoo () gmail com>
Date: Wed, 17 Nov 2010 16:51:46 +0000

Thanks Jim,

The line cards are 6700 series only.

It seems (i will test it) that wrr commands can only be associated with COS
marking not DSCP nor EXP.

May be Priority Queuing is not supported for MPLS traffic on 6700 modules ?

On Wed, Nov 17, 2010 at 3:36 PM, Rampley Jr, Jim F <
jim.rampley () chartercom com> wrote:


This depends on which line cards you have in your chassis.  This
configuration below won't work on 6700 series line cards.  You have to use
the wrr commands.  I didn't test it, but MQC configuration below should work
on ES series line cards.



Jim


-----Original Message-----
From: Manu Chao [mailto:linux.yahoo () gmail com]
Sent: Wednesday, November 17, 2010 9:11 AM
To: NANOG list
Subject: Cisco 6500 QoS Priority Queuing (DSCP & EXP based)

I would to translate following 7200 QoS configuration to Catalyst 6500:

class-map match-any PQ
 match  dscp ef
 match mpls experimental topmost 5

policy-map QOS-PE-OUT
 class PQ
  priority percent 33
 class class-default

AFAIK we need extra command on 6500 to enable Priority Queuing at the
interface level but my problem is that interface priority command are only
COS based not DSCP nor EXP. I may be wrong.

I would appreciate any 6500 QoS help.

Thanks in advance

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