[c-nsp] Nexus 7000

[David Sinn]

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On Jan 29, 2008, at 11:51 AM, Peter Lothberg wrote:

>> Tim Stevenson wrote:
>>> At 10:18 PM 1/28/2008 -0600, mack observed:
>>>> No mention of MPLS though which gives the CRS-1 a leg up on the
>>>> backbone routing market.
>>>
>>> NO MPLS (though the h/w is capable). No immediate plans for it  
>>> either.
>>
>> This would be a show-stopper for us in our Data Center.  We have to  
>> have
>> MPLS support for MPLS VPN.  How else are they planning on maintaining
>> VRF separation between customers across multiple chassis in a hosted
>> environment?  The only other option would be to use the Nexus as a  
>> dumb
>> L2 switch with a 6500 upstream for all L3VPN functionality.  I would
>> imagine the Nexus would be a rather expensive dumb L2 switch.  What
>> about extending the customer's VRF to a sister DC in a
>> geographically-diverse location?  MPLS again.
>
> You don't need MPLS to do this, any encpsulation works. For example
> there are large world_wide deployments providing this using L2TPv3 as
> transport.

While you don't _need_ MPLS to do this, it is one of the most common  
technology's to support L2 and L3 VPN services.  It happens to be one  
of the more supported then say L2TPv3 is.  So from a "how do I fit  
this into what I've already been doing for the last few year", this  
misses the boat.  It won't fit into my gigapop and it won't work on my  
campus without MPLS.

I'd love to be doing the prefect technology, but I've implemented what  
works and I can get on multiple platforms and vendors.

David

>
>
>> We're also talking with our upstream peers about them providing  
>> L2VPNs
>> for customers to our DC.  We'd meet the providers are our fiber meet
>> points with MPLS-enabled circuits.  Again, requiring some router  
>> other
>> than the Nexus.
>>
>> Say it with me everyone, MPLS MPLS MPLS.  It's silly to build any  
>> device
>> without MPLS support.
>
> MPLS is old school, it limits you to be in your own MPLS-fishball
> network.
>
> -P
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