From: Ciscolab (ciscolab@vip.sina.com)
Date: Wed Apr 02 2003 - 21:26:54 GMT-3
Jake Reynolds,
As you mentioned, I get the following info, please confirm that is right, or not?
policy-map test
class telnet
band percent 30
queue-limit 100
......
according to the above configuration for the interface with 128K bandwidth, the bandwidth used for telnet class is
128 *30%
NOT 128*30%*75%
======= 2003-04-02 10:09:00 DzTZ@4PEVPP45@#:=======
>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
= = = = = = = = = = = = = = = = = = = =
!!!!!!!!!!!!!!!!VB
@q#!
!!!!!!!!!!!!!!!!Ciscolab
!!!!!!!!!!!!!!!!ciscolab@vip.sina.com
!!!!!!!!!!!!!!!!!!!!2003-04-03
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