MPLS over GRE tunnels

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Re: MPLS over GRE tunnels

by phileasfogg » Sun Jan 27, 2013 2:16 pm

Thanks for posting this. I had the same challenge as you. But by luck I stumbled across this:

http://www.cisco.com/en/US/docs/ios/int ... omgre.html

Eliminates the need to create a GRE at all. I'm checking about the MTU size tho as perhaps that is a gap.

Anyway, just to share my findings :)

Cheers!

Re:MPLS over GRE tunnels

by Guest » Sun Oct 25, 2009 4:48 pm


HI Mounir & Harold,That's a Master-piece of the POST.Have Rated both.Best Regards,Guru Prasad R

Re:MPLS over GRE tunnels

by Guest » Sun Oct 25, 2009 3:23 pm


Hi Harold,Thanks for your great remembered point :)Best Regards,Mounir Mohamed

Re:MPLS over GRE tunnels

by Guest » Sun Oct 25, 2009 3:03 pm


Great explanation Mounir. I just wanted to add that this extension to BGP-4 is defined by RFC2858 for those interested to learn a bit more about it.http://www.ietf.org/rfc/rfc2858.txt?number=2858Regards,

Re:MPLS over GRE tunnels

by Guest » Sun Oct 25, 2009 2:36 pm


Hi Guru,BGP Originally designed to carry routing information only for IPv4 address family,But actually this was limitation for BGP,  because there is so many protocols need to be carry also, so IETF standardized the Multiprotocol extensions for BGP, this extension allow BGP4 to carry routing Information for multiple network layer protocols like (IPv6, IPX, and VPNv4)Regarding the MP-BGP configurations of PE-to-PE this is not the common case, usually MP-BGP Route-Reflector used to save resources and overhead.Please rate helpful posts.Best Regards,Mounir Mohamed

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