System and method for protection against edge node failure

摘要

In one embodiment, a method includes determining, by an edge router, a plurality of prefixes reachable by the edge router, each prefix indicating a range of Internet Protocol (IP) addresses. The method further includes grouping, by the edge router, the plurality of prefixes into one or more groups, wherein each group is associated with a particular repair edge router and the prefixes in each particular group are reachable by both the edge router and the particular repair edge router associated with the particular group. The method further includes communicating instructions, from the edge router to a core router, to send data packets associated with the prefixes in each particular group to the particular edge router associated with the particular group if the edge router becomes unreachable.

主权项

1. A network device comprising:
one or more communication interfaces; and one or more processing devices operable to:
determine a plurality of prefixes that are reachable by the network device, each prefix indicating a range of Internet Protocol (IP) addresses;group the plurality of prefixes into one or more groups, wherein:
each group is associated with a particular router of a plurality of routers; andthe prefixes in each particular group are reachable by both the network device and the particular router associated with the particular group; andcommunicate instructions to send data packets associated with the prefixes in each particular group to the particular router associated with the particular group if the network device becomes unreachable.