[c-nsp] Nexus 2000 vs Catalyst 4948 for access layer

[Jason Shearer]

Don't really need the 7K.....you can run your 10G trunks to and existing 6500 or something else to do L3.

In the future you will supposedly be able to run your FEXs to the 7K and supposedly the next gen 5Ks will be able to do "more".

I see the current topology good for very large datacenters.  Pair of 7Ks at the core, pairs of 5Ks at the end of the row and pairs of 2Ks in each rack.  Very scalable design.

Currently the Nexus is not for everyone.

Jason

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Livio Zanol Puppim
Sent: Friday, February 12, 2010 9:38 AM
To: Tony Varriale
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] Nexus 2000 vs Catalyst 4948 for access layer

Ok...

Let's try again, more simplyfied.

Using a DC topology with Nexus family, I must have, for gigabit
connectivity, Nexus 2000 -> Nexus 5000 -> Nexus 7000.

Using traditional way I can have Catalyst 4948 -> Nexus 7000, saving 10G
ports from Nexus 5000 for access.

That's my only problem, loosing ports com 5000... Is it clear enought?

Can you give me a good reason to use the first design?

2010/2/12 Tony Varriale <tvarriale at comcast.net>

> ----- Original Message ----- From: "Livio Zanol Puppim" <
>> livio.zanol.puppim at gmail.com>
>> To: "Jason Plank" <jmplank at gmail.com>
>> Cc: "Cisco NSP ((E-mail))'" <cisco-nsp at puck.nether.net>
>> Sent: Thursday, February 11, 2010 7:18 PM
>>
>> Subject: Re: [c-nsp] Nexus 2000 vs Catalyst 4948 for access layer
>>
>>
>  Brad,
>>
>> Can't I make "the cloud" with traditional switches (4948 for example)?
>>
>
> You can call it what you'd like.
>
>
>  As I've said before, my only concern is that I'll loose A LOT of access
>> ports
>> on Nexus 5000 that could be used by servers with 10GE/FCoE.
>>
>
> Ok, maybe I missed something.  What are you trying to do?  High density 1
> gig?  5k does that (with 2k).  Cheap and layer 2 high density 10g?  5k does
> that.
>
>
>  I'm expecting that 10G(with FCoE) will dominate the servers design, so my
>> loss will be huge.
>>
>
> It will be a large part of the future, no doubt.  Your loss?
>
>
>  f Nexux 2000 could be attached directly to an Nexus 7000 (it is not quite
>> dfficult to make that works) the deisgn would perfect fit for our needs...
>>
>
> As I've stated before, there is no if.  Not sure how many more times I have
> to say it...
>
> tv
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--
[]'s

Lívio Zanol Puppim
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