[132227] in North American Network Operators' Group
RE: Cisco 6500 QoS Priority Queuing (DSCP & EXP based)
daemon@ATHENA.MIT.EDU (Rampley Jr, Jim F)
Thu Nov 18 14:40:30 2010
From: "Rampley Jr, Jim F" <jim.rampley@chartercom.com>
To: Chris Evans <chrisccnpspam2@gmail.com>, Manu Chao <linux.yahoo@gmail.com>
Date: Thu, 18 Nov 2010 13:40:04 -0600
In-Reply-To: <AANLkTinT-H2ZCbgarxd_d9_1i6iNoZ6kWDWOpvUbH=82@mail.gmail.com>
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
As it relates directly to QoS on 6700 series cards, yes those blades do COS=
based QoS. So if you want to put voice traffic in a priority queue you wo=
uld do something like this:
! map COS 5 to the priority queue, assuming you want COS 5 in the priority =
queue
priority-queue cos-map 1 5
! Set the queue limit to the size you want
priority-queue queue-limit 10
Jim
From: Chris Evans [mailto:chrisccnpspam2@gmail.com]
Sent: Wednesday, November 17, 2010 10:59 AM
To: Manu Chao
Cc: NANOG list; Rampley Jr, Jim F
Subject: Re: Cisco 6500 QoS Priority Queuing (DSCP & EXP based)
These are lan modules. They have fixed queues that you map traffic into. R=
esearch lan qos methods and it should make sense.
On Nov 17, 2010 11:55 AM, "Manu Chao" <linux.yahoo@gmail.com<mailto:linux.y=
ahoo@gmail.com>> wrote:
> Thanks Jim,
>
> The line cards are 6700 series only.
>
> It seems (i will test it) that wrr commands can only be associated with C=
OS
> 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<mailto: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 w=
ork
>> on ES series line cards.
>>
>>
>>
>> Jim
>>
>>
>> -----Original Message-----
>> From: Manu Chao [mailto:linux.yahoo@gmail.com<mailto:linux.yahoo@gmail.c=
om>]
>> 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 on=
ly
>> COS based not DSCP nor EXP. I may be wrong.
>>
>> I would appreciate any 6500 QoS help.
>>
>> Thanks in advance
>>
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