Re: Custom Queuing

And by that logic, RIP would be included. What you're referring to
(assumed, whether intended or not!) is the PAK Priority concept that a
router does to important traffic. :) That's true of any of the QoS
functions.

I just figured it was a slight against RIP to not specifically list it
in Custom queueing's Queue 0, but it may have been an oversight (grin)
Bummer on that.

*Scott Morris*, CCIE/x4/ (R&S/ISP-Dial/Security/Service Provider) #4713,

JNCIE-M #153, JNCIS-ER, CISSP, et al.

JNCI-M, JNCI-ER

evil_at_ine.com

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Ryan West wrote:
> Anantha,
>
> I think you're understanding is correct:
>
> Rack1R1(config)#queue-list ?
> <1-16> Queue list number
>
> Rack1R1(config)#queue-list 0 ?
> % Unrecognized command
>
> http://www.cisco.com/en/US/partner/docs/ios/qos/configuration/guide/congstion_mgmt_oview.html#wp1003648
>
> Queue number 0 is a system queue; it is emptied before any of the queues numbered 1 through 16 are processed. The system queues high priority packets, such as keepalive packets and signalling packets, to this queue. Other traffic cannot be configured to use this queue.
>
> The phrase 'high priority packets, such as' is ambiguous, so I'm not really sure about routing updates.
>
> Clearly RIP qualifies as a high priority packet though :)
>
> -ryan
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of Anantha Subramanian Natarajan
> Sent: Monday, August 24, 2009 4:16 PM
> To: Narbik Kocharians; Cisco certification
> Subject: Re: Custom Queuing
>
> Hi Narbik,
>
> Thank you for the response.Is queue 0 is user configurable .I may be
> totally wrong but for somereason I read that it cannot be set by user.But
> will take your understanding until I get more clarity on that.
>
> Thanks Narbik
>
> Regards
> Anantha Subramanian Natarajan
>
> On Mon, Aug 24, 2009 at 3:10 PM, Narbik Kocharians <narbikk_at_gmail.com>wrote:
>
>
>> From what i recall, the system queue (Queue 0), is the priority Queue and
>> it handles Layer 2 keepalives ONLY (By default) and NOT routing updates,
>> however, you can assign them to Queue 0 if you need to.
>>
>> On Mon, Aug 24, 2009 at 12:56 PM, Scott Morris <smorris_at_ine.com> wrote:
>>
>>
>>> My teeth don't feel longer. But yes, indeed... the queue 0 is used for
>>> many layer2 keepalives as well as routing protocol hellos/updates.
>>>
>>> Specifically IS-IS, EIGRP and OSPF use it for sure. I haven't found
>>> anything telling me whether BGP did or not, and I don't recall ever
>>> caring to do debugs on it to be sure, so I wouldn't count on that one.
>>>
>>> Perhaps someone whose teeth FEEL longer may remember something more on
>>> that (grin). RIP does not make that list, by the way. *shrug*
>>>
>>>
>>>
>>>
>>> *Scott Morris*, CCIE/x4/ (R&S/ISP-Dial/Security/Service Provider) #4713,
>>>
>>>
>>> JNCIE-M #153, JNCIS-ER, CISSP, et al.
>>>
>>> JNCI-M, JNCI-ER
>>>
>>> evil_at_ine.com
>>>
>>>
>>> Internetwork Expert, Inc.
>>>
>>> http://www.InternetworkExpert.com <http://www.internetworkexpert.com/>
>>>
>>> Toll Free: 877-224-8987
>>>
>>> Outside US: 775-826-4344
>>>
>>>
>>> Knowledge is power.
>>>
>>> Power corrupts.
>>>
>>> Study hard and be Eeeeviiiil......
>>>
>>>
>>>
>>>
>>>
>>>
>>> Anthony Sequeira wrote:
>>>
>>>> I seem to recall this system queue DOES NOT include routing protocol
>>>> traffic.
>>>>
>>>> Perhaps someone "longer in the tooth" can elaborate more for us.
>>>>
>>>> :-)
>>>>
>>>> Warmest Regards,
>>>>
>>>> Anthony J. Sequeira, CCIE #15626
>>>> http://www.INE.com <http://www.ine.com/>
>>>>
>>>> Test your Core Knowledge today!
>>>> Q: What OSPF feature allows LSA updates to be refreshed in groups, as
>>>> opposed to on-demand?
>>>> A: LSA Pacing
>>>> More Info:
>>>> http://www.cisco.com/en/US/docs/ios/11_3/feature/guide/ospfpace.html
>>>>
>>>>
>>>> On Aug 24, 2009, at 1:15 PM, Anantha Subramanian Natarajan wrote:
>>>>
>>>>
>>>>> Hi All,
>>>>>
>>>>> I have a basic question on Custom Queuing.When we enable custom
>>>>> queuing on
>>>>> an interface on cisco routers,we will have 17 queues right.where
>>>>> queue 1 to
>>>>> 16 is user configurable and queue 0 is system queue(non-user
>>>>> configurable).I
>>>>> am understanding that system queue will take care keepalives and
>>>>> sigalling
>>>>> traffic.Is it includes Routing protocol traffic and also traffic
>>>>> destined to
>>>>> routers or sourced from routers.
>>>>>
>>>>> Thanks for the help
>>>>>
>>>>> Regards
>>>>> Anantha Subramanian Natarajan
>>>>>
>>>>>
>>>>> Blogs and organic groups at http://www.ccie.net
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>>>
>>>
>>>
>>>
>>>
>> --
>> Narbik Kocharians
>> CCSI#30832, CCIE# 12410 (R&S, SP, Security)
>> www.MicronicsTraining.com <http://www.micronicstraining.com/>
>> Sr. Technical Instructor
>>
>
>
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>
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>
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Received on Mon Aug 24 2009 - 19:12:52 ART