Re: BECN & FECN

Thanks everyone.

FECN is clear and does make sense...There is still some grey area around
BECN though. I'm basically trying o find out when and how the BECN bit it
set, is it when traffic goes to receiver or when it returns?

To some this might be trivial but I'm trying to understand the workings
around FR.

-Molomo

On Mon, Sep 7, 2009 at 9:07 PM, Joe Astorino <jastorino_at_ipexpert.com> wrote:

> My personal favorite was always the story of "Max Throughput , CCIE"
> hahaha...soooooo awesome.
>
> http://www.routergod.com/?p=22
>
>
> On Mon, Sep 7, 2009 at 2:39 PM, Scott M Vermillion <
> scott_ccie_list_at_it-ag.com> wrote:
>
>> That's a classic. This one was great too:
>>
>> http://www.routergod.com/jenniferconnolly/
>>
>> Maybe we can get some clarification on v4.0 one of these days...
>>
>>
>> On Sep 7, 2009, at 12:17 , Anthony Sequeira wrote:
>>
>> I immediately think of one of my favorite actresses whenever I see these
>>> terms!
>>>
>>> http://www.routergod.com/juliettelewis/
>>>
>>> Warmest Regards,
>>>
>>> Anthony J. Sequeira, CCIE #15626
>>> http://www.INE.com <http://www.ine.com/>
>>>
>>> Test your Core Knowledge today!
>>> Q: What is the default OSPF reference bandwidth (in Mb), used for
>>> determining cost for an interface?
>>> A: one hundred
>>> More Info:
>>> http://www.cisco.com/en/US/tech/tk365/technologies_q_and_a_item09186a0080094704.shtml#q3
>>>
>>>
>>> On Sep 7, 2009, at 9:17 AM, Molomo wrote:
>>>
>>> Experts,
>>>> I have read a number of books on these two topics and I'm yet to find
>>>> a uniform explanation. Below are my explanations correct me if I'm
>>>> wrong,
>>>>
>>>> BECN- FR switch sets this bit in a frame header as the destination
>>>> replies to the sender - to inform the sender of congestion.
>>>>
>>>> FECN - This bit is set when traffic is unidirectional (eg video
>>>> stream), but only this is addressed to destination to generate a
>>>> pseudo packet so that FR switch can set the BECN back to the sender.
>>>>
>>>> Am I correct?
>>>>
>>>> Thanks in advance.
>>>>
>>>> -Molomo
>>>>
>>>>
>>>> Blogs and organic groups at http://www.ccie.net
>>>>
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>>>
>>>
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>>
>>
>> Blogs and organic groups at http://www.ccie.net
>>
>> _______________________________________________________________________
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>>
>>
>>
>>
>>
>>
>>
>>
>
>
> --
> Regards,
>
> Joe Astorino - CCIE #24347 R&S
> Technical Instructor - IPexpert, Inc.
> Cell: +1.586.212.6107
> Fax: +1.810.454.0130
> Mailto: jastorino_at_ipexpert.com

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Received on Mon Sep 07 2009 - 22:43:26 ART