From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Fri Nov 05 2004 - 17:43:15 GMT-3
>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.
The bandwidth statement in the MQC doesn't work the same way as
the custom queue does. They both accomplish the same goal however, to
reserve bandwidth in the output queue when there is congestion.
Your second solution is incorrect because you are reserving 50%
of 75% of the interface bandwidth.
HTH,
Brian McGahan, CCIE #8593
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
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> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Swaroop Potdar
> Sent: Friday, November 05, 2004 3:32 AM
> To: ccielab@groupstudy.com
> Subject: Need Help : Doubt : IEWB Lab 15 QOS Section.
>
> >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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