From: ian (iyux2000@gmail.com)
Date: Mon Mar 19 2007 - 20:53:24 ART
If i remembered correctly, there is no need to change the interface to reserve 100%.
In latest IOS, "bandwidth percent **" is not needed any more.
======= 2007-03-20 04:06:07 What you've mentioned in your letter#:=======
>I have seen a question similar to this in my studies. So I am
>interested in the solution as well.
>
>The problem I have with the solution is ECN notifies senders when there
>are a certain number of packets in queue and based on the MPD. I do not
>understand how this will notify senders of congestion when the link
>reaches 75%.
>
>I would think you would need to police traffic and enable ECN for any
>traffic exceeding the policed rate. However, that is not an option in
>the police command.
>
>Am I over thinking the requirements or is there another solution to this
>problem?
>
>Thanks
>
>Thomas Johnson
>JP Morgan Chase
>Global Network Implementation
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
>Darby Weaver
>Sent: Sunday, March 18, 2007 7:46 PM
>To: andres_ccie@hotmail.com; ccielab@groupstudy.com
>Subject: Re: Congestion avoidance
>
>As long as you change the interface to consider 100%
>bandwidth you should be ok. I see you have done this
>but sometimes it is easy to forget. Also you may want
>to be careful that the interface has not had a
>previous requirement to change the default bandwidth
>for any reason.
>
>And remember the keyword load is used in your example.
> So you should be keenly aware if other terms might be
>used as well. I would recommend changing the
>variables in your example and changing the example
>given in CCO and performing a bit a criss-cross,
>produce the condition, observe the results and work in
>a methodical fashion. Use extended pings to help
>produce the desired congestion. Caslow gives great
>examples that can be used for QoS examples like this
>one and others.
>
>http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cg/hq
>os_c/part15/ch05/hwrdecn.htm#wp1015359
>
>The example listed in the link above should give you
>an example of the correct verification commands as a
>very similar example as you have presented - so you
>can compare your output line for line.
>
>
>
>
>
>
>--- andres_ccie@hotmail.com wrote:
>
>> Hi Group,
>> I have the following questions:
>>
>> Configure on interface x/x R1 congestion avoidance,
>> that if if's load is 75%, then router must say to
>> traffic source about it and that source reduce
>> speed.
>> Dont use FECN & BECN.
>>
>> Mi answer:
>>
>> policy-map PM
>> class class-defaut
>> bandwidth percent 75
>> random-detect
>> random-detect ecn
>>
>> int x/x
>> max-reserved-bandwidth 100
>> service-policy output PM
>>
>>
>> This answer is correct?.
>>
>> Thanks a lot.
>> AA
>>
>>
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!!!!!!!!!!!!!!!!Have a nice day.
!!!!!!!!!!!!!!!!ian
!!!!!!!!!!!!!!!!iyux2000@gmail.com
!!!!!!!!!!!!!!!!!!!!2007-03-20
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