From: Swaroop Potdar (swarooppotdar@hotmail.com)
Date: Fri Nov 05 2004 - 06:32:12 GMT-3
>From: "Swaroop Potdar" <swarooppotdar@hotmail.com>
>Reply-To: "Swaroop Potdar" <swarooppotdar@hotmail.com>
>To: ccielab@groupstudy.com
>CC: bmcgahan@internetworkexpert.com, bdennis@internetworkexpert.com
>Subject: Doubt : IEWB Lab 15 QOS Section.
>Date: Thu, 04 Nov 2004 15:32:12 +0530
>
>To IE Team and Groupstudy,
>
>
>In IEWB lab 15 QOS
>
>In the QOS section where in we need to do the custom-queue to CBWFQ
>conversion. The solution guide uses a max-reserved-bandwidth command to
>allocate 85% of bandwidth of the line for the CBWFQ policy-map.
>
>But can we modify the default parameters of the line itself when its not
>hinted in the question ????
>
>And also the custome-queue assigns weights to the queues defined based on
>the ratio between the queues and does not do allocation of bandwidth
>directly.
>
>But if we use the "bandwidth percent" command we are directly allocating
>the bandwidth and not using the ratio of the weights of the queues which is
>the behaviour of the custom-queue as not like PQ.
>
>This happens because in 12.2T there is absolute allocation of bandwidth and
>not relative of the available line bandwidth, when the "bandwidth percent"
>command is used
>
>So do you feel the "bandwidth remaning percent" command had to be used
>instead which acts like the custom-queue allocation based on ratios, going
>by the description of the command in the DOC CD and its behaviour.
>
>If this is correct then 12.2T came with a problem and also a solution. :-)
>
>So with this I am pasting the two options available Pls tell me which one
>is right.
>
>Your inputs and corrections would be highly valuable.
>
>
>---------option 1 -----------
>policy-map CBWFQ
>class www
>bandwidth percent 50
>class ftp
>bandwidth percent 30
>class telnet
>bandwidth percent 5
>
>( to implement this we have to give a max-reserved-bandwidth command on the
>interface as its absolute)
>
>int e0/0
>max-reserved-bandwidth 85
>service-policy outout CBWFQ
>end
>
>------------2----------------
>
>policy-map CBWFQ
>class www
>bandwidth remaining percent 50
>class ftp
>bandwidth remaining percent 30
>class telnet
>bandwidth remaining percent 5
>
>int e0/0
>service-policy outout CBWFQ
>end
>
>
>using this we dont have to change any default behaviour of the interface
>and moreover we are meeting the behaviour of custom-queuing which acts on
>ratios and not absoulte weights..
>
>-----------------------
>
>
>Thanks in Advance,
>Swaroop.
>
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Regards,
Swaroop.
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