Re: Custom Queuing

Now where's the fun in reading Petr's posts? ;)

And as any good CCIE (or candidate) should get down to, let the router
do the talking....

Having a router with several OSPF and BGP sessions on it, a quick
custom-queueing setup, and several "clear ip bgp *" and "clear ip ospf
proc" affirmed that routing updates do not get counted in queue 0.

My idea was to let them fall to default or to system (I set up two other
queues for fun)

R1#sh queueing int f0/0
Interface FastEthernet0/0 queueing strategy: custom

Output queue utilization (queue/count)
        0/356 1/5 2/191640 3/124 4/0 5/0 6/0 7/0 8/0
        9/0 10/0 11/0 12/0 13/0 14/0 15/0 16/0
R1#sh queueing custom
Current custom queue configuration:

List Queue Args
1 3 default
1 1 protocol ip list 111
1 2 protocol ip list 112
R1#sh access-list
Extended IP access list 111
    10 permit icmp any any (5 matches)
Extended IP access list 112
    10 permit tcp any any eq telnet
R1#

Now, the entertaining part is my ACL for telnet has the most matches,
but I have no telnet going on at all (grin) Haven't figured that one
out yet, but that's out of scope for our amusement.

So we've determined that Anthony WAS indeed correct about the routing
protocols NOT being part of queue 0. Too bad he's asleep at the moment
and won't read this until morning! (Grin)

*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

Toll Free: 877-224-8987

Outside US: 775-826-4344

Knowledge is power.

Power corrupts.

Study hard and be Eeeeviiiil......

Narbik Kocharians wrote:
> 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
> <mailto: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
> <mailto: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 <mailto: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
> <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>
> [mailto:nobody_at_groupstudy.com <mailto:nobody_at_groupstudy.com>
> <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 <mailto:narbikk_at_gmail.com>>
> <narbikk_at_gmail.com <mailto: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
> <mailto:smorris_at_ine.com>>
> <smorris_at_ine.com <mailto: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 <mailto: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
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> <http://www.ccie.net/>
> >
> >
> _______________________________________________________________________
> > Subscription information may be found
> at:http://www.groupstudy.com/list/CCIELab.html
> >
> > Blogs and organic groups at http://www.ccie.net
> <http://www.ccie.net/>
> >
> >
> _______________________________________________________________________
> > Subscription information may be found
> > at:http://www.groupstudy.com/list/CCIELab.html
> >
> > Blogs and organic groups at http://www.ccie.net
> <http://www.ccie.net/>
> >
> >
> _______________________________________________________________________
> > Subscription information may be found
> at:http://www.groupstudy.com/list/CCIELab.html
> >
> >
> >
> >
> >
> >
> >
> >
> > --
> > 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/>
> > Sr. Technical Instructor
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> <http://www.ccie.net/>
> >
> >
> _______________________________________________________________________
> > Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> <http://www.ccie.net/>
> >
> >
> _______________________________________________________________________
> > Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
>
> Blogs and organic groups at http://www.ccie.net <http://www.ccie.net/>
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
>
>
>
>
>
>
>
>
>
> --
> Narbik Kocharians
> CCSI#30832, CCIE# 12410 (R&S, SP, Security)
> www.MicronicsTraining.com <http://www.MicronicsTraining.com>
> Sr. Technical Instructor

Blogs and organic groups at http://www.ccie.net
Received on Mon Aug 24 2009 - 21:25:01 ART