The MPLS WG Archive

["Manfredi, Albert E" <Albert.Manfredi@PHL.Boeing.com>]

Angela Chiu wrote:

> Bert,
> 
> Two disjoint links in IP layer may not be diversely routed in 
> the physically
> layer, for example they could share the same fiber conduit as 
> certain point
> of the routes. See our draft
> http://search.ietf.org/internet-drafts/draft-chiu-strand-uniqu
> e-olcp-00.txt
> for more details on this.

Of course. But if a client wants to achieve path diversity at Layer 3, for
whatever reasons of reliability, then the service provider could provide
that client with the appropriate paths to use, based on that service
provider's physical network. Nothing new to invent?

And if the service provider sets up the separate paths over separate OSPF
areas, for example, one might ensure that the paths stay physically
separate.

Bert
albert.e.manfredi@boeing.com