Re: Custom Queuing

Scott,

I did not see *routing updates* included in the doc that you provided. But
look what i found:

http://blog.internetworkexpert.com/category/ccie-routing-switching/qos/page/2/

On Mon, Aug 24, 2009 at 4:54 PM, Anantha Subramanian Natarajan <
anantha.natarajan_at_gravitant.com> wrote:

> Thank you scott for the explanation.
>
> Regards
> Anantha Subramanian Natarajan
>
> On Mon, Aug 24, 2009 at 6:12 PM, Scott Morris <smorris_at_ine.com> wrote:
>
> > 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
> >
> >
> > 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......
> >
> >
> >
> >
> > 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
> <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>
> <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>
> <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/>
> <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 #15626http://www.INE.com <http://www.ine.com/><
> 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
> >
> >
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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/> <http://www.micronicstraining.com/>
> <http://www.micronicstraining.com/>
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>

-- 
Narbik Kocharians
CCSI#30832, CCIE# 12410 (R&S, SP, Security)
www.MicronicsTraining.com
Sr. Technical Instructor
Blogs and organic groups at http://www.ccie.net