On 23/Oct/15 11:00, marcel.durega...@yahoo.fr wrote:
> by having multiple areas, therefore ABR which deny routers and network > LSA, you introduce summarization (ABR only send summary LSA, mean > subnet info, not topology info) in your network. > Thus you loose informations and do not have a complete topology of > your network. I guess MPLS/TE prefer to seat on top of a real topology ? Yes, summarization in the IGP has the potential to create blackholes and/or loops. This reminds me of: http://tools.ietf.org/id/draft-swallow-mpls-aggregate-fec-01.txt Mark.