[c-nsp] 3560 vs 4948 shared buffer memory

Vincent Aniello vincent.aniello at pipelinefinancial.com
Tue Mar 8 14:25:47 EST 2011


We replaced 3560Es that were experiencing output drops due to micro
bursts with 4948s and we no longer experience the drops on the 4948s.

--Vincent

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Dan Letkeman
Sent: Monday, March 07, 2011 11:07 PM
To: cisco-nsp
Subject: [c-nsp] 3560 vs 4948 shared buffer memory

Hello,

I've noticed a fair amount of output drops from traffic bursts on our
3560G's.  This is happening with or without QOS on.

So I have been looking a replacing these switches for this reason and
others.  From what I understand there is a problem with the shared
memory buffer space, when there are traffic bursts/micro bursts.
Would a 4948 be a big improvement when it comes to output drops vs a
3560?

Has anyone else replaced there 3560/3750 with a 4948 and seen the output
drops go away?

I see the 4948E's have much more shared buffer memory, but those are out
of our price range.

Thanks,
Dan.
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