[j-nsp] MPLS Layer 2 backaul on EX/MX

Matthew Walster matthew at walster.org
Tue Sep 15 11:05:20 EDT 2009

2009/8/27 Jay Hanke <jhanke at myclearwave.net>

> I have a number of EX series switches carrying vlans back to a central MX
> 480.
> I have remote customers running bgp with their sessions terminating on the
> MX. Currently the whole system operates in layer two.
> I would like to move to a partial mesh deployment and use MPLS-CCC to carry
> the EX customer traffic back to the MX.
> The problem is, at the MX interface the traffic will be inside the tunnel.
> I
> could take a jumper and loop two of the MX ports using 1 to bridge and one
> to terminate the IP. That seems like a hack.
> Is there another method that could be used to terminate to a loopback
> interface or bridge domain so I don’t need to burn the ports with loop
> plugs?

 I spoke with Jay off-list about this, and thought there might be a clever
way of doing this with a logical-tunnel, with the MPLS-CCC tunnel ending on
a logical tunnel interface, then hooking that into a regular logical
interface with an inet address for BGP peering.

As I've not used logical-tunnels yet, I wasn't able to furnish him with
further details. Might someone else be able to offer suggestions?

Matthew Walster

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