Hi all, This draft (http://tools.ietf.org/html/draft-xu-spring-islands-connection-over-ip-00) describes a use case about interconnecting spring islands over IP networks. The rationale for this draft is as follows:
Suppose LSR A and LSR B are separated by an IP network. Assume LSR A receives from LSR B a label binding L for a given FEC (e.g., one of LSR B's loopback addresses) via T-LDP or L-BGP, when LSR A wants to forward a MPLS packet targeted for that FEC, it could forward that MPLS packet through an IP-based tunnel towards LSR B. In contrast, if LSR A receives the above label binding originated by LSR B via IS-IS or OSPF, it could be looked as if this label binding was learnt from a remote BGP or LDP peer. As such, LSR A could forward the MPLS packet targeted for that FEC over an IP-based tunnel towards LSR B as well. In fact, one of the claimed advantages of IPv6-SR is that it doesn't require to upgrade all routers in the networks. With the above approach, we can achieve the same effect in the MPLS-SR. Best regards, Xiaohu _______________________________________________ spring mailing list [email protected] https://www.ietf.org/mailman/listinfo/spring
