Re: Custom Queuing

Hi Ryan,

  Thank you very much for confirming the same.

Regards
Anantha Subramanian Natarajan

On Mon, Aug 24, 2009 at 3:35 PM, Ryan West <rwest_at_zyedge.com> 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/><
> 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/> <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/> <
> http://www.micronicstraining.com/>
> > Sr. Technical Instructor
>
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Received on Mon Aug 24 2009 - 15:37:35 ART