[c-nsp] Stacking 3750X vs diverse 4948E

[Skeeve Stevens]

Feature / Nexus 5010 / 3750X

VLANs / 507 / 1005
MAC / 16k / 4k-12k
L3 / N / Y
vPC / Y / N

Nexus 5010 - less VLANs, no Layer 3, vPC
3750X - more VLAN, Layer 3, no vPC


*Skeeve Stevens, CEO*
eintellego Pty Ltd
skeeve at eintellego.net ; www.eintellego.net <http://www.eintellego.net.au>

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The Experts Who The Experts Call
Juniper - Cisco – IBM



On Sun, May 20, 2012 at 10:03 AM, scott owens <scottowens12 at gmail.com>wrote:

> How about Nexus 5010s.
>
> I think they bundle them for less than 2 x 3750X .
> We have both but the 3750s are used where we needed L2/L3, the 5Ks for just
> L2 up to VSS or 7Ks.
>
>
> you can boot them separately and they do LACP / Etherchannel just fine.
>
>
>
>
> >   2. Stacking 3750X vs diverse 4948E (David Coulson)
> > Message: 2
> > Date: Fri, 18 May 2012 14:55:57 -0400
> > From: David Coulson <david at davidcoulson.net>
> > To: cisco-nsp at puck.nether.net
> > Subject: [c-nsp] Stacking 3750X vs diverse 4948E
> > Message-ID: <4FB69B3D.3060802 at davidcoulson.net>
> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> >
> > In a datacenter environment, we typically deploy 4948 top-of-rack
> > switches with L2 uplinks to our 6500 core - Systems get connections into
> > two different switches and rely on OS NIC bonding (mostly Linux) to
> > support switch failures. Switches running STP and in the last four years
> > we've had no issues with this design (including failures of systems
> > connected to diverse switches).
> >
> > A new proposed configuration utilizes stacked 3750X switches, where
> > servers would be connected to multiple switches within the same stack. I
> > have next to no experience in the low-end switches that do stacking, but
> > from a general risk management perspective, it seems like a many eggs
> > and single basket configuration.
> >
> > Does anyone have any solid experience with 3750X switches, or stacking
> > in a datacenter in general? I've seen plenty of stacks for
> > closets/end-users, but I don't see many in a top-of-rack config. Is
> > Cisco stacking typically 'reliable', in that when a switch fails it will
> > leave the remainder of the stack functional? What about a software
> > issue? Does the whole stack crap out and reload, or does the master just
> > fail and a new one get elected?
> >
> > I realize it's a pretty broad question, but it boils down to - Is a
> > stacked switch config significantly less reliable/resilient/available
> > than two TOR switches?
> >
> > David
> >
> >
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