Cisco 6500 QoS Priority Queuing (DSCP & EXP based)

Rampley Jr, Jim F jim.rampley at chartercom.com
Thu Nov 18 13:40:04 CST 2010


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 would 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 at 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.  Research lan qos methods and it should make sense.
On Nov 17, 2010 11:55 AM, "Manu Chao" <linux.yahoo at gmail.com<mailto:linux.yahoo at 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 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 at chartercom.com<mailto:jim.rampley at 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 at gmail.com<mailto:linux.yahoo at 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
>>
>> E-MAIL CONFIDENTIALITY NOTICE:
>>
>>
>>
>>
>>
>>
>>
>> The contents of this e-mail message and
>> any attachments are intended solely for the
>> addressee(s) and may contain confidential
>> and/or legally privileged information. If you
>> are not the intended recipient of this message
>> or if this message has been addressed to you
>> in error, please immediately alert the sender
>> by reply e-mail and then delete this message
>> and any attachments. If you are not the
>> intended recipient, you are notified that
>> any use, dissemination, distribution, copying,
>> or storage of this message or any attachment
>> is strictly prohibited.
>>
>>
>>
>>
>>
>>
>>
>>
>>

E-MAIL CONFIDENTIALITY NOTICE: 

 

 

 

The contents of this e-mail message and 
any attachments are intended solely for the 
addressee(s) and may contain confidential 
and/or legally privileged information. If you 
are not the intended recipient of this message 
or if this message has been addressed to you 
in error, please immediately alert the sender
 by reply e-mail and then delete this message 
and any attachments. If you are not the 
intended recipient, you are notified that 
any use, dissemination, distribution, copying, 
or storage of this message or any attachment 
is strictly prohibited.










More information about the NANOG mailing list