Splitting and sharing routing information among several routers acting as a single border router

摘要

Routers split and share routing information among several routers within a group of routers acting as a single border router in an Internet protocol (IP) network, each router comprising a routing table. A router of the group selects routes in the routing table of the router; requests other routers of the group to replace, in their routing tables, each selected route with the router as next hop; associates parts of-non selected routes, each one with another router of the group; and removes and replaces, in the routing table, each-non selected route associated with a router of the group by the associated router as next hop.

主权项

1. A computer-implemented method for splitting and sharing routing information among routers, the method comprising executing on a router the steps of:
in response to a size of a routing table of a first border router exceeding a predefined threshold, splitting the routing table into a plurality of subnetworks, wherein the first border router acts as a single border router in internet protocol network communication with a group of other border routers; assigning responsibility for routing internet protocol network communication traffic intended for a first subnetwork of the plurality of subnetworks to the first border router; informing each of the group of border routers that the first border router is ready to receive internet protocol network communication traffic from the each of the other border routers that is directed to the first subnetwork; and instructing each of the other border routers of the group of border routers to select and remove from their own routing tables at least one route related to the first subnetwork and replace the removed at least one route by a single route pointing to the first border router as next hop.