[c-nsp] 3750E cluster replacement

[Chandler Bassett]

Why's it important you maintain a cluster?

You're absolutely correct, 3750's are weak ToR switches.  I would go with
the 5500 if you find yourself looking toward a wider nexus deployment in the
next 18-36 months.

On Tue, Jul 26, 2011 at 7:03 AM, Holemans Wim <wim.holemans at ua.ac.be> wrote:

> We have a network based on a VSS with 20G channels to 3750E-24 clusters
> top-of-rack.
> We are seeing  a lot of discards on the cluster which connects to our
> NetApp SANs. I suspect this is because of the small buffers in the 3750E
> switches and the growth of our traffic to the SAN, especially ISCI traffic.
> I'm considering replacing this cluster with something else, but I'm not
> sure what to put there. I read that 4900M have larger buffer and this would
>  offer the needed mix of 1G en 10G ports but you can't cluster these
> switches and seen the importance of the connected devices, this is not
> really an option.
> Buffering on nexus 55xx seems also better and there you have the vPc
> possibility. Do you consider this the way to go or has anyone else a
> suggestion for a (clustered) device to replace this 3750E cluster ?
>
> Wim Holemans
> Netwerkdienst Universiteit Antwerpen
> Network Services University of Antwerp
>
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