A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : IS-IS Extension for BGP FRR Protection against Edge Node Failure Author(s) : Ahmed Bashandy Filename : draft-bashandy-isis-bgp-edge-node-frr-00.txt Pages : 10 Date : 2012-03-05 Consider a BGP free core scenario where traffic is tunneled between edge routers. Suppose the edge BGP speakers PE1, PE2,..., PEn know about a prefix P/m via the external routers CE1, CE2,..., CEm. If the edge router PEi crashes or becomes totally disconnected from the core, it desirable for a core router "P" that is carrying traffic to the failed edge router PEi to immediately restore traffic by re- routing packets originally tunneled to PEi and destined to the prefix P/m to one of the other edge routers that advertised P/m, say PEj, until BGP re-converges. If the packets originally flowing to the failed edge router PEi are labeled, then the repairing core router P router must swap the label advertised by the failed edge router PEi for the prefix P/m with the label advertised for the same prefix by the edge router PEj before re-routing the packet through an LSP terminating PEj. The document proposes an extension to IS-IS protocol to inform core routers about the repair edge router PEj and, for labeled packets, the label that needs to be pushed/swapped before sending the packet into the tunnel terminating on PEj A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-bashandy-isis-bgp-edge-node-frr-00.txt Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ This Internet-Draft can be retrieved at: ftp://ftp.ietf.org/internet-drafts/draft-bashandy-isis-bgp-edge-node-frr-00.txt _______________________________________________ I-D-Announce mailing list I-D-Announce@ietf.org https://www.ietf.org/mailman/listinfo/i-d-announce Internet-Draft directories: http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt
