[149515] in North American Network Operators' Group
Re: Switch and router
daemon@ATHENA.MIT.EDU (Justin M. Streiner)
Tue Feb 7 09:05:32 2012
Date: Tue, 7 Feb 2012 09:04:35 -0500 (EST)
From: "Justin M. Streiner" <streiner@cluebyfour.org>
To: "nanog@nanog.org" <nanog@nanog.org>
In-Reply-To: <CACwqZxgiOCP0g-jOoFHTqkaDSRXD-ygnvkOsrqwUEFf1XWP5dQ@mail.gmail.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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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=20
the presence of congestion. Some will not explicitly report it, so you=20
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,=20
CPU/memory/buffer utilization, link errors, overruns, etc).
Whichever manufacturers you use will likely have lots of resources=20
available through their websites/support channels for troubleshooting=20
congestion.
I'm going to go out on a limb here and take a guess that Ann =3D Deric,=20
using a different address?
jms
> On Mon, Feb 6, 2012 at 4:56 PM, Fabien Delmotte <fdelmotte1@mac.com> wrot=
e:
>
>> Hi
>> 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.
>>
>> Regards
>>
>> Fabien
>>
>> Envoy=E9 de mon iPad
>>
>> Le 6 f=E9vr. 2012 =E0 22:41, Ann Kwok <annkwok80@gmail.com> a =E9crit :
>>
>>> Hello
>>>
>>> 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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