Updating state in edge routers

Details Updating state in edge routers Updating state in edge routers

2006-03-31

2010-12-07

Won, Michael (Department: 2455)

Electrical computers and digital processing systems: multicomput

Computer-to-computer data routing

Routing data updating

C709S239000, C709S243000, C709S244000, C370S229000, C370S235000, C370S351000

Reexamination Certificate

active

07849215

ABSTRACT:
Methods, edge routers and an edge-router-refresh network signalling message used to update state information in edge routers. A data session is established on a path from a source towards a destination connected from the source via a plurality of Autonomous Systems (AS). The edge-router-refresh network signalling message is created by an edge router acting an an ingress edge router. The edge-router-refresh network signalling message comprises an identifier of the data session, an identifier of the edge router, which issued the edge-router-refresh message and an indication that the edge-router-refresh message is meant to be used by the edge routers present on the modified path. Optionally, the edge-router-refresh network signalling message further comprises a list of the plurality of AS traversed by the path before the modification.

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