[j-nsp] MVPN Interoperability Issue

John Frame jframe at juniper.net
Fri Oct 16 15:53:04 EDT 2009

Yes, you only need a single GRE tunnel between PEs which can carry multiple P2MP LSPs.

On Oct 16, 2009, at 12:37 PM, Stefan Fouant wrote:

On Fri, Oct 16, 2009 at 3:17 PM, John Frame <jframe at juniper.net<mailto:jframe at juniper.net>> wrote:
Actually it is possible to support BGP-MVPNs over a non-P2MP capable
core by using GRE tunnels.  Each PE would require a Tunnel PIC to
support both the GRE requirement and the vt interface must be used in
the routing instance - however if you are using MXs then it is built
in already on the DPCs.  If Inclusive trees are used, then P2MP
branches are built statically, but automatic trees can be built if
using a Selective tree.

In the GRE approach, do we have the ability to aggregate multiple MVPNs into a single Inter-PE GRE tunnel?


Stefan Fouant

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