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Re: Switch and router
From: "Justin M. Streiner" <streiner () cluebyfour org>
Date: Tue, 7 Feb 2012 09:04:35 -0500 (EST)

On Tue, 7 Feb 2012, Ann Kwok wrote:

Thank you for your help

But we can't increase the pipe as we are using 10G switch.

The congestion happens when the traffic is using 7G

Any idea?

In addition, how to determine the congestion happens in router or switch.

Different manufacturers and platforms have different ways of indicating the presence of congestion. Some will not explicitly report it, so you end up having to go back and look at performance statistics on your devices (per-interface traffic, overall traffic and/or traffic per ASIC group, CPU/memory/buffer utilization, link errors, overruns, etc).

Whichever manufacturers you use will likely have lots of resources available through their websites/support channels for troubleshooting congestion.

I'm going to go out on a limb here and take a guess that Ann = Deric, using a different address?


On Mon, Feb 6, 2012 at 4:56 PM, Fabien Delmotte <fdelmotte1 () mac com> wrote:

Forget flow control, because you will use buffer and at the someone will
not understant pause frame.
Another issue is : with pause frame you block all the traffic from the
outbound port ... So very dangerous.
Best way : big pipe.



Envoyé de mon iPad

Le 6 févr. 2012 à 22:41, Ann Kwok <annkwok80 () gmail com> a écrit :


There is big congestion between router and switch

I read some documents about flowcontral

Do I disable or adjust flowcontral at the same?

Can flowcontral solve the congestion issue?

How can I adjust flowcontral in cisco router and HP switch?

Thank you so much

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