Patent ID: 7715376

Claim:
A method for managing forwarding information in a routing system having a routing controller and at least one forwarder, the method comprising the steps of: setting, at the routing controller, forwarding information from routing information collected by exchanging a routing protocol message with adjacent routers and providing said at least one forwarder with said forwarding information; storing, at said at least one forwarder, in a first table, at least one address information and forwarding identification information corresponding to the address information which are contained in said forwarding information and providing said routing controller with said first table as said routing controller is rebooted; copying, at said routing controller, said first table to a second table, and when forwarding identification information which corresponds to address information contained in forwarding information re-set from routing information re-collected by exchanging said routing protocol message with said adjacent routers is contained in said second table, providing said at least one forwarder with said address information contained in the re-set forwarding information and said forwarding identification information contained in said second table; and when said forwarding identification information contained in said second table is contained in said first table, maintaining, at said at least one forwarder, said forwarding information set before the rebooting of said routing controller which corresponds to said forwarding identification information contained in said second table.