Re: OT : To Connect IBM BladeCentre Swiches with Nexus 2k

Agree with Mr. Brain. But you may need to think about SAN connectivity as well or planning about FCoE.

Nexus module might be good option with Nexus 5548UP while using FCoE.

Sent from my iPhone

On Dec 19, 2012, at 6:35 PM, Brian McGahan <bmcgahan_at_ine.com> wrote:

> It's not really a consequence of spanning-tree that's an issue because like you said they're just access ports. Be aware though that the 2K's do not support STP on their downstream facing links, as these links always run as edge ports with BPDU filter enabled. The real potential design issue is that the Nexus 2k doesn't support local switching. If most or all of your traffic is north/south then this is fine, but if you're trying to go east/west between the blade switches then all your traffic has to go north on the uplinks to the parent Nexus 5K switch, and then south back down to the 2K. Also depending on how many uplinks you have on your 2K's going to the 5K's, you're potentially going to be oversubscribing these links beyond what you want.
>
> Ideally you would probably skip the 2K's and go direct to the 5K's, e.g. 5020 or 5596 if you need more port density, but of course the disadvantage of this is the cost.
>
>
> HTH,
>
> Brian McGahan, CCIE #8593 (R&S/SP/Security)
> bmcgahan_at_INE.com
>
> Internetwork Expert, Inc.
> http://www.INE.com
>
>
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of Akber Ali Mirza
> Sent: Wednesday, December 19, 2012 3:08 AM
> To: CCIE Lab
> Subject: OT : To Connect IBM BladeCentre Swiches with Nexus 2k module
>
> Hello All,
>
>
>
> We are looking forward to implement IBM BladeCentre Swiches connectivity with Nexus 2k module.
>
>
>
> I would like to brief you about my network over as follows:
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>
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> Coreswitch : 6513 ( Layer 3 switch + Spanning Tree root)
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>
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> Nexus 5010 : Layer 2 switch
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>
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> Nexus 2k 10G ports based module.
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> *Currentl Solution : *we want to connect the IBM Blade Switches (4) as demonstrated in the attached diagram which will be connected
>
> to Nexus 2k module as Ether-channel Access port.
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>
>
> Initially we been proposed by our vendor with this design and Now vendor is recommending us to connect the Blade switch etiher to
>
>
>
> Nexus 5k switch or directly to 6513 core-switches instead of Nexus 2k modules as they say Nexus 2k modules are only to connect
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>
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> the Edge devices .
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> We do not have ports available on Nexus 5010 to connect the cables from IBM Blade Centre Switches.
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>
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> Otherthan that, incase if we go ahead and connect the IBM Blade switches as access ether-channel access port with Nexus 2k module
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> what are the consequences we have to face realted Spanning tree or any other.
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>
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>
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> Request you to please give your valuable comments at the earliest!
>
>
>
>
>
>
>
> ~ Akber Mirza.
>
>
> Blogs and organic groups at http://www.ccie.net
>
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Received on Wed Dec 19 2012 - 19:25:30 ART