From: Abdul Waheed Ghaffar (a_w_ghaffar@hotmail.com)
Date: Fri May 02 2003 - 12:11:18 GMT-3
Khalid,
I agree with OhioHondo.....See If u configure CBWFQ ..it reserve 25%
bandwidth for Protocols , system and L2 if u configure max-bandwidth command
u should be very careful that system resources should get enough bandwidth
otherwise ur network may be ruined!!!!!
>From: "Khalid Siddiq" <khalid@sys.net.pk>
>Reply-To: "Khalid Siddiq" <khalid@sys.net.pk>
>To: "Connie Nie" <CNie@EPLUS.com>, "OhioHondo"
><ohiohondo@columbus.rr.com>, <ccielab@groupstudy.com>
>Subject: RE: How to convert Custom-Q to CBWFQ
>Date: Fri, 2 May 2003 17:36:47 +0500
>
>Dear all,
>
>Q1_-The queue 0 is reserved for system traffic much like the 25% of the
>bandwidth is reserved for system traffic in CBWFQ.
>
>I disagree with the statemnet of OhioHOndo,
>CBWFQ reserved the 25 % by default not only for the system traffic, also
>for the Layer 2 overhead and best effert delivery traffic, but in case of
>CQ the queue 0 is reserved only for system traffic. CQ has default queue
>for the Best effort traffic.
>
>
>Q2--If in interface i configured max-reserved bandwidth to 100 % and i
>assign the 100% bandwidth to different classes not to the default class,
>Does it means that the routing protocol and other system messages cannot
>sent on the intefface?
>
>
>can someone clarify.
>
>khalid
>
>
>-----Original Message-----
>From: Connie Nie [mailto:CNie@EPLUS.com]
>Sent: Sunday, April 20, 2003 10:15 PM
>To: 'OhioHondo'; ccielab@groupstudy.com
>Subject: RE: How to convert Custom-Q to CBWFQ
>
>
>I agree with you--it is a bad example of how to use CQ. I wonder what we
>should do if run into one of these in the lab.
>
>Connie
>
>
>-----Original Message-----
>From: OhioHondo [mailto:ohiohondo@columbus.rr.com]
>Sent: Sunday, April 20, 2003 11:14 AM
>To: Connie Nie; ccielab@groupstudy.com
>Subject: RE: How to convert Custom-Q to CBWFQ
>
>Connie
>
>I stand corrected. You can configure data types to use queue 0. I learned
>something that I won't forget. However the premise of the question, putting
>Telnet data into queue 0, is just a deplorable design idea. In addition, it
>is not using Custom queuing as it was intended to be used.
>
>The queue 0 is reserved for system traffic much like the 25% of the
>bandwidth is reserved for system traffic in CBWFQ. Putting other data
>traffic in queue 0 can be at the expense of maintaining
>OSPF/EIGRP/ISIS/SpanTree, etc. relationships. The PRIORITES here should be:
>
>1) maintain a viable network
>2) prioritize data traffic
>
>Note that data traffic, however it is prioritized, needs a viable network
>to
>be transmitted. In my opinion this question is not conducive to teaching
>the
>principles of design a good network engineer should know.
>
>-----Original Message-----
>From: Connie Nie [mailto:CNie@EPLUS.com]
>Sent: Sunday, April 20, 2003 11:54 AM
>To: 'OhioHondo'; ccielab@groupstudy.com
>Subject: RE: How to convert Custom-Q to CBWFQ
>
>
>I tried the CQ configuration on my router, it seems like you can configure
>queue 0:
>
>chris_1_R2#sh queueing
>Current custom queue configuration:
>
>List Queue Args
>1 2 default
>1 0 protocol ip tcp port telnet
>1 1 protocol ip tcp port ftp
>1 0 byte-count 1000 limit 100
>1 1 byte-count 1000 limit 100
>1 2 byte-count 2000 limit 100
>Current random-detect configuration:
>chris_1_R2#sh queueing int e 0
>Interface Ethernet0 queueing strategy: custom
>
>Output queue utilization (queue/count)
> 0/176 1/15 2/31534 3/0 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
>
>Connie
>
>-----Original Message-----
>From: OhioHondo [mailto:ohiohondo@columbus.rr.com]
>Sent: Sunday, April 20, 2003 10:41 AM
>To: Connie Nie; 'OhioHondo'; ccielab@groupstudy.com
>Subject: RE: How to convert Custom-Q to CBWFQ
>
>Connie
>
>If other traffic can't be configured to use the queue, then I would think
>Telnet can't be configured to use the queue. In that case, the original
>configuration was incorrect!!!
>
>-----Original Message-----
>From: Connie Nie [mailto:CNie@EPLUS.com]
>Sent: Sunday, April 20, 2003 11:39 AM
>To: 'OhioHondo'; ccielab@groupstudy.com
>Subject: RE: How to convert Custom-Q to CBWFQ
>
>
>From the configuration guide for Custom Queue:
>
>"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. "
>
>Connie
>
>-----Original Message-----
>From: OhioHondo [mailto:ohiohondo@columbus.rr.com]
>Sent: Sunday, April 20, 2003 10:21 AM
>To: Connie Nie; 'Scott M. Livingston'; ccielab@groupstudy.com
>Subject: RE: How to convert Custom-Q to CBWFQ
>
>Custom queuing does not give priority to any queue, so if you want to make
>an equivalent you would just use bandwidth for CBWFQ.
>
>(I believe CBWFQ with a priority queue is LLQ.)
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
>Connie Nie
>Sent: Sunday, April 20, 2003 10:28 AM
>To: 'Scott M. Livingston'; ccielab@groupstudy.com
>Subject: RE: How to convert Custom-Q to CBWFQ
>
>
>Telnet was in queue 0 in custom-queue-list. Should telnet traffic be put
>into priority queue (priority 24 instead of bandwidth 24)? Anyone wants to
>chip in?
>
>Connie
>-----Original Message-----
>From: Scott M. Livingston [mailto:scottl@sprinthosting.net]
>Sent: Sunday, April 20, 2003 12:18 AM
>To: 'Jeongwoo Park'; 'Jake Reynolds'; ccielab@groupstudy.com
>Subject: RE: How to convert Custom-Q to CBWFQ
>
> >> queue-list 1 protocol telnet 0
> >> queue-list 1 protocol ftp 1
> >> queue-list 1 default 2
> >> queue-list 1 queue 0 byte-count 1000 limit 100
> >> queue-list 1 queue 1 byte-count 1000 limit 100
> >> queue-list 1 queue 2 byte-count 2000 limit 100
>
>Based off the above this is how I would do it.....
>#############################
>To Find BW
>-------------
>BW = 128 * (byte of queue / total byte count of queues) * .75
>
>
>To Find BW %
>------------
>BW % = (byte of queue / total byte count of queues) * .75
>
>###############################
>
>Telnet Queue:
>-------------
>BW = 128 * (1000 / 4000) * .75
>BW = 24
>
>FTP Queue:
>----------
>BW = 128 * (1000 / 4000) * .75
>BW = 24
>
>Default Queue:
>--------------
>BW = 128 * (2000 / 4000) * .75
>BW = 48
>
>!
>class-map match-all TELNET
> match access-group 100
>class-map match-all FTP
> match access-group 101
>!
>policy-map TCP-STUFF
> class TELNET
> bandwidth 24
> queue-limit 100
> class FTP
> bandwidth 24
> queue-limit 100
> class class-default
> bandwidth 48
> queue-limit 100
>!
>!
>interface Serial0/0
> band 128
> service-policy output TCP-STUFF
>!
>!
>access-list 100 permit tcp any any eq telnet
>access-list 101 permit tcp any any eq ftp
>access-list 101 permit tcp any any eq ftp-data
>!
>
>Let me know if you feel like I have something jacked! Fabrice and I
>shared some dialog on this a few weeks ago - I ended up seeing it his
>way. :)
>
>Thanks!
>scott
>
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
>Jeongwoo Park
>Sent: Saturday, April 19, 2003 8:10 PM
>To: 'Jake Reynolds'; 'ccielab@groupstudy.com'
>Subject: RE: How to convert Custom-Q to CBWFQ
>
>Jake,
>
>Where did you get the 30% from?
>
>JP
>
>-----Original Message-----
>From: Jake Reynolds [mailto:JREYNOLDS@uscentral.org]
>Sent: Wednesday, April 02, 2003 8:10 AM
>To: Ciscolab
>Cc: ccielab@groupstudy.com
>Subject: RE: How to convert Custom-Q to CBWFQ
>
>
>Well it depends on the bandwidth of your interface. If your interface is
>128kbps then my math using the previous scenario would be:
>
> >> queue-list 1 protocol telnet 0
> >> queue-list 1 protocol ftp 1
> >> queue-list 1 default 2
> >> queue-list 1 queue 0 byte-count 1000 limit 100
> >> queue-list 1 queue 1 byte-count 1000 limit 100
> >> queue-list 1 queue 2 byte-count 2000 limit 100
>
>Add the byte counts together to get a total byte count.
>
>1000 + 1000 + 2000 = 4000 bytes
>
>Multiply each queue by 30% (or .30) and divide by the total byte count.
>
>Queue 0: (.30 * 1000) / 4000 = .075 or 7.5%
>Queue 1: (.30 * 1000) / 4000 = .075 or 7.5%
>Queue 2: (.30 * 2000) / 4000 = .15 or 15%
>
>Check to make sure your percentages = 30 %
>7.5% + 7.5% + 15% = 30%
>
>Multiply each percentage by the interface bandwidth.
>
>.....075 * 128 kpps = 9.6kbps
>.....075 * 128 kbps = 9.6kbps
>.....15 * 128 kpbs = 19.2kbps
>
>Check things again by adding up the bandwidths and dividing by the total
>interface bandwidth if you're a freak.
>
>9.6kbps + 9.6 kbps + 19.2 kbps = 38.4kbps
>38.4kbps / 128kbps = .3 (30%)
>
>And there you have it.
>
>Telnet get's 9.6kbps
>FTP gets 9.6kpbs
>Class-Default gets 19.2kbps
>
>And don't forget to add queue depths of 100 to each class in the
>policy-map
>
>
>
>Jake Reynolds
>Systems Engineer - Information Systems
>CCIE #11224, MCSE NT4 & W2K, CCNA, CCNP, A+
>
>US Central Credit Union
>9701 Renner Blvd.
>Lenexa, KS 66219
>
>Office- 913.227.6122
>Cell- 816.305.6785
>
>jreynolds@uscentral.org
>
>
>-----Original Message-----
>From: Ciscolab [mailto:ciscolab@vip.sina.com]
>Sent: Wednesday, April 02, 2003 9:41 AM
>To: Jake Reynolds
>Cc: ccielab@groupstudy.com
>Subject: Re: How to convert Custom-Q to CBWFQ
>
>
>Jake Reynolds,
>
>If I use the command "Bandwidth percent 30", How much bandwidth will be
>use
>for the class in CBWFQ,
>
>A. 30% * 75% * X
>B. 305 * X
>
>
>
>======= 2003-04-02 08:57:00 DzTZ@4PEVPP45@#:=======
>
> >I would assume that since you want to convert from CQ to CBWFQ as
> >accurately as possible, consider the following:
> >
> >1. CQ assumes 100 of the bandwidth. It doesn't matter whether you
>have
> >1 queue or 10 queues it's always moving from queue to queue (even
> >though it only takes effect during times of congestion.)
> >
> >2. By default an interface won't let you reserve more than 75 of its
> >bandwidth with CBWFQ.
> >
> >Since you want to be accurate use the max-reserve-bandwidth 100
> >command. This way you are actually distributing bandwidth like the CQ
>
> >specifies, not 75 of what the CQ specifies.
> >
> >Jake Reynolds
> >Systems Engineer - Information Systems
> >CCIE #11224, MCSE NT4 & W2K, CCNA, CCNP, A+
> >
> >US Central Credit Union
> >9701 Renner Blvd.
> >Lenexa, KS 66219
> >
> >Office- 913.227.6122
> >Cell- 816.305.6785
> >
> >jreynolds@uscentral.org
> >
> >
> >-----Original Message-----
> >From: ciscolab@vip.sina.com [mailto:ciscolab@vip.sina.com]
> >Sent: Tuesday, April 01, 2003 7:38 PM
> >To: Jake Reynolds
> >Cc: ccielab@groupstudy.com
> >Subject: RE: How to convert Custom-Q to CBWFQ
> >
> >
> >Do we need to consider the default bandwidth for CQ and CBWFQ
> >----- Original Message -----
> >From:"Jake Reynolds" <JREYNOLDS@uscentral.org>
> >To:<ccielab@groupstudy.com>
> >Subject:RE: How to convert Custom-Q to CBWFQ
> >Date:Tue, 1 Apr 2003 22:54:41 +0800
> >> Just add the byte counts together and divide each value by the
> >total.
> >> This gives you bandwidth percentages for each protocol. Then make
> >> class-maps matching each protocol. Create a policy-map and enter
>the
> >
> >> classes with the appropriate bandwidth percentages. Also don't
> >forget
> >> the queue depth of 100 packets. Then of course apply the policy-map
> >to
> >> an interface with the service-policy [input | output] command.
> >>
> >> Jake Reynolds
> >> Systems Engineer - Information Systems
> >> CCIE #11224, MCSE NT4 & W2K, CCNA, CCNP, A+
> >>
> >> US Central Credit Union
> >> 9701 Renner Blvd.
> >> Lenexa, KS 66219
> >>
> >> Office- 913.227.6122
> >> Cell- 816.305.6785
> >>
> >> jreynolds@uscentral.org
> >>
> >>
> >> -----Original Message-----
> >> From: Scot Peter [mailto:scotsman@rediffmail.com]
> >> Sent: Tuesday, April 01, 2003 7:48 AM
> >> To: ccielab@groupstudy.com
> >> Subject: How to convert Custom-Q to CBWFQ
> >>
> >>
> >> Hello Group,
> >>
> >> I have already posted a question on this topic, but no answers
>yet...
> >> so posting again... I want to convert the below Custom Queue to
> >> CBWFQ. How can I do it. Please put your suggestions.
> >>
> >> queue-list 1 protocol telnet 0
> >> queue-list 1 protocol ftp 1
> >> queue-list 1 default 2
> >> queue-list 1 queue 0 byte-count 1000 limit 100
> >> queue-list 1 queue 1 byte-count 1000 limit 100
> >> queue-list 1 queue 2 byte-count 2000 limit 100
> >>
> >> int s0
> >> custom-queue-list 1
> >>
> >> Warm regards
> >> Scot
> >>
> >>
> >_____________________________________________________________________
>_
> >> _
> >> Odomos - the only mosquito protection outside 4 walls - Click here
> >to
> >> know more!
> >>
> >http://r.rediff.com/r?http://clients.rediff.com/odomos/Odomos.htm&&od
>o
> >> mos&&wn
> >>
> >>
> >
> >______________________________________
> >
> >===================================================================
>
>= = = = = = = = = = = = = = = = = = = =
>
>
>!!!!!!!!!!!!!!!!VB
>@q#!
>
>
>!!!!!!!!!!!!!!!!Ciscolab
>!!!!!!!!!!!!!!!!ciscolab@vip.sina.com
>!!!!!!!!!!!!!!!!!!!!2003-04-02
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