From: Richard Dumoulin (Richard.Dumoulin@vanco.fr)
Date: Fri Jul 01 2005 - 16:08:02 GMT-3
Also if one of the queues is empty of course that the remaining bandwidth is
available for the rest! The percentages assigned are minimum bandwidth
values used when there is congestion.
Last, Hertz is a unit of frequency and not bandwidth,
-- Richard
-----Original Message-----
From: Joe Smith [mailto:j333smith@hotmail.com]
Sent: Friday, July 01, 2005 8:50 PM
To: kenbar3@gmail.com; silamoni@yahoo.com; ccielab@groupstudy.com
Subject: RE: 3550 QoS
If you use the command wrr-queue bandwidth 1 2 3 4 its not 25% for each
queue.
Queue 1 would be 1/(1+2+3+4) = 1/10 = 10%
Queue 2 would be 2/(1+2+3+4) = 2/10 = 20%
Queue 3 would be 3/(1+2+3+4) = 3/10 = 30%
Queue 4 would be 4/(1+2+3+4) = 4/10 = 40%
The default if you dont use this command is 25% for each queue, and of
course this will change if you activate the priority queue.
>From: "Ken Bartlinski" <kenbar3@gmail.com>
>Reply-To: "Ken Bartlinski" <kenbar3@gmail.com>
>To: "'Sila Moni'" <silamoni@yahoo.com>, <ccielab@groupstudy.com>
>Subject: RE: 3550 QoS
>Date: Fri, 1 Jul 2005 14:07:03 -0400
>
>Sila,
>
>As far as I know you can not adjust the amount of bandwidth assigned to
>each
>queue on the 3550. This is just a by product of how many queues you have
>configured.
>
>When 4 queues are configured each get 25%. If two queues are configured
>each
>would get 50% and so on.
>
>Something to remember here - If a queue is not currently being utilized the
>bandwidth is not available for other traffic. So be very careful when
>deciding how many queues to configure. Traffic may be dropped on highly
>utilized queues while other queues are empty. You could easily turn a
>100Mhz
>port into a 50Mhz or even 25Mhz port.
>
>HTH
>
>Ken
>
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
>Sila
>Moni
>Sent: Friday, July 01, 2005 12:14 PM
>To: ccielab@groupstudy.com
>Subject: 3550 QoS
>
>I'm reading the URL below, but still not clear on how
>certain thing works.
>http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12225seb/scg/swqo
s
>.pdf
>
>Page 68-69 "Allocating Bandwidth among Egress Queues"
>
>If you used 'wrr-queue bandwidth 1 2 3 4', it's 25%
>for each queue. How do you assign a different
>percentage to each of the queue.
>
>Thank you in advance.
>
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