05-21-2004 01:48 AM
Hi,
Part of an MPLS network I'm designing has to cross over a public IP network that does not provide MPLS/BGP facilities.
My question is can I connect two MPLS P nodes together over a point to point GRE (or other e.g. L2TP) tunnel.
Also as connectivity from my P nodes to each side of the public IP network will be FE, I assume I'm going to run into MTU problems?
Anyone tried this?
05-21-2004 02:03 AM
I guess using L2TPV3 would be a better option as you could run MPLS over the IP network...at IP Layer 2 VPN over which you can connect
05-21-2004 05:39 AM
It is also possible to run MPLS over GRE. As far as the MTU is concerned pmtud should be addresses this concern.
Hopes this help,
07-22-2004 09:33 AM
I have try this,it is ok.use GRE tunnel to connect P-TO-P,you must open tag-switch ip in tunnel interface
and I suggest you use the ios version is 12 GD,if you use tunnel and P-To-P main line to transmit data same time,I hope you use ip mtu to change the mtu size is same as main line mtu,don't put the tunnel source and tunnel destination ip in IGP route table.
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