Hi Jawed, If your PE-CE protocol is OSPF, then shamlinks like others have suggested are the way to go, however that is dependant on your SP putting in the appropriate config to support this (honestly any SP worth their salt offering OSPF as a PE-CE should be doing this). Even if this config is done and you end up with Intra-Area routes, quite probably your GRE backdoor link will need the OSPF cost increased to be less preferred than the MPLS link.
This blog post might be of assistance - http://noshut.blogspot.com.au/2011/08/ospf-domain-id-and-sham-links.html I guess another thing you could do is have the backdoor link appear in a different OSPF process and do mutual redistribution between processes, then you would be comparing externals with externals but again shamlinks were designed with your problem statement in mind. Cheers, Adam On Wed, Mar 7, 2012 at 5:49 AM, Jawed Lashari <[email protected]> wrote: > > MPLS provider runs BGP in to core which I don't have control over. > I only have access to MPLS edge routers where I can play with > redistribution. > > I know there are other solutions like to run different routing > protocol over GRE tunnels but I wanted to try with OSPF 1st. > > > > > > -----Original Message----- > From: Kim Pedersen [mailto:[email protected]] > Sent: Tuesday, March 06, 2012 1:45 PM > To: marc abel > Cc: Jawed Lashari; [email protected] > Subject: Re: [OSL | CCIE_RS] OSPF Route types > > Agree. > > Sham-Links will utilize the OSPF super-backbone (assuming your topology > has the MPLS in area 0) and its sole purpose is to solve this issue. > > Kim > > On Mar 6, 2012, at 7:30 PM, marc abel wrote: > > > You are looking for OSPF Sham link. > > > > On Tue, Mar 6, 2012 at 12:18 PM, Jawed Lashari <[email protected]> > wrote: > > > >> Hey Guys, > >> > >> I am long time follower of this group and need little help this > time. > >> > >> > >> > >> When redistributed in to OSPF, route appears in my routing table as > > >> either E1 or E2, depend how you redistribute. > >> > >> I want to appear route as O ( Intra area ) when I redistribute to > OSPF. > >> Is that possible? I have done research but have not find anything. > >> > >> > >> > >> Example: > >> > >> > >> > >> I am learning network ( 192.168.1.x) from MPLS cloud and GRE > over > >> Internet but it is getting preferred through GRE as it appears as O > >> ( Intra area ) route and I want to prefer MPLS route which is > >> appearing as E2 route because I am redistributing from BGP ( Cloud > ) to OSPF. > >> > >> > >> > >> I would appreciate if anyone has solution to this problem. > >> > >> > >> > >> /Thanks > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> _______________________________________________ > >> For more information regarding industry leading CCIE Lab training, > >> please visit www.ipexpert.com > >> > >> Are you a CCNP or CCIE and looking for a job? Check out > >> www.PlatinumPlacement.com > >> > >> http://onlinestudylist.com/mailman/listinfo/ccie_rs > >> > > _______________________________________________ > > For more information regarding industry leading CCIE Lab training, > > please visit www.ipexpert.com > > > > Are you a CCNP or CCIE and looking for a job? Check out > > www.PlatinumPlacement.com > > > > http://onlinestudylist.com/mailman/listinfo/ccie_rs > > > > // Freedom Matters > CCIE #29189 > http://www.packet-forwarding.net > > > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > http://onlinestudylist.com/mailman/listinfo/ccie_rs > _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs
