[c-nsp] Layer 3 Core

Bruce Pinsky bep at whack.org
Thu Apr 5 14:44:08 EDT 2007


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Stephen Backholm wrote:
> Currently where I work we run a complete Layer 3 network core. This
> decision was made in order to keep Spanning Tree Protocol, ACls, QoS,
> and Policing out of the core and at the distribution layer. This has
> worked well for us, but we have a need for a few of our server VLANs to
> be in opposite geographic ends of campus for redundancy. These servers
> run as clusters and require Layer 2 connectivity between them, so in
> other words we need Layer 2 connectivity across our Layer 3 core.
> 
> 
> Here is the question.
> 
> Would it be better to solve this problem with MPLS or just trunk the
> handful of server VLANs across our core?
> 
> 
> Your thoughts and/or suggestions are appreciated.
> 

L2TPv3 based pseudowires.

- --
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bep

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