[c-nsp] MPLS over VLAN

David Hughes david at hughes.com.au
Mon Apr 26 21:17:30 EDT 2010


On 27/04/2010, at 7:32 AM, Paul Stewart wrote:

> We are getting ready to deploy some equipment (mixture of Cisco/Juniper)
> that is MPLS capable.  We'd like to transport some VPLS traffic however in
> the middle of a few of the links are layer2 switches - we've been told this
> isn't possible even with 1600 MTU frame size supported.... Juniper is
> telling us (in one particular segment) that we must hang MX gear in there to
> make it work with MPLS... 

We run some EoMPLS vc's over MPLS links that traverse a layer2 only device.  No problems as long as the switch MTU can handle the packet size.  All our end-systems are connected at 1500 MTU so there's no issue as long as the L2 kit is recently new.


David
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