[c-nsp] BGP vs OSPF (CE -> PE)

[CiscoNSP List]

> From: adam.vitkovsky at swan.sk
> To: cisconsp_list at hotmail.com; cisco-nsp at puck.nether.net
> Subject: RE: [c-nsp] BGP vs OSPF (CE -> PE)
> Date: Wed, 18 Jun 2014 08:48:28 +0000
> 
> It's because intra-area LSAs are preferred compared to inter-area LSAs. 
> The super-backbone(MP-BGP->OSPF) introduces LSAs from the remote site as Type-3 into the LSDB of a local PE and if the local PE happens to have a Type-1 LSA from a directly connected link than that one is preferred. So you can either make both LSAs to appear as Type-1 using sham-link or you can make both to be type-3 using different areas on each site. 
> 
> Or you can use BGP as everyone else and can forget about all this mess above. 
> 


Thanks everyone for the replies - much appreciated (And thanks Adam for the explanation above)

Can anyone please point me to a doc/other on how to manipulate the routes if using BGP (In place of OSPF) to have traffic behave "correctly"?

Cheers.