Hi List,
Apologies if this is hidden in the list somewhere, but I've done a bit of
Googling and can't find too much.. so here goes!
I'm looking at implementing an MPLS VPN over mGRE solution to facilitate
routing instance segregation across multiple, geographically separate sites,
across a
If you are looking to do this for setting the MPLS MTU dynamically then I don't
think this will help as starting with our forwarding infrastructure rewrite in
12.4(20)T (I would need to check to be sure when/if in other code trains) we
lost the ability to set the MPLS MTU on tunnel interfaces.
Thanks for the heads up on that.
My 'PE' routers will be 7200-NPE400 FE in/out or ASR1k GbE in/out (and possibly
ISR 3945s if/when the feature is available..) all with standard 1500MTU. Inside
LAN interfaces will be subinterfaces (one per VRF) and outside WAN interfaces
will be access ports
The problem with ICMP frag needed is some apps(read Microsoft) just
flat out fail when frag happens and set the DF bit to be sure it does
not. ICMP frag needed or not they will just fail over and over. They
may have gotten better with this since the last time I cared(somewhere
in between
