Method and system for optimizing routing table changes due...

Details Method and system for optimizing routing table changes due... Method and system for optimizing routing table changes due...

2003-02-11

2008-08-19

Marcelo, Melvin (Department: 2616)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S401000

Reexamination Certificate

active

07415028

ABSTRACT:
A method for optimizing routing functions in a router is provided. The router has a split plane architecture including a control plane and a data plane. The control plane includes an Address Resolution Protocol cache and the data plane includes a programmable forwarding information base. According to one aspect, when the control plane obtains information about a route, it evaluates the obtained information about the route to determine if address resolution is needed. If it is determined that address resolution is needed for the route, the control plane performs the needed address resolution to derive additional information about the route. The control plane programs the forwarding information base to incorporate the obtained and additional information. The determination as to whether address resolution is needed for the route is performed regardless of whether packets are to be delivered on the route.

REFERENCES:
patent: 5309437 (1994-05-01), Perlman et al.
patent: 2003/0140283 (2003-07-01), Nishio
patent: 2004/0109457 (2004-06-01), Johnson et al.
patent: 2004/0131079 (2004-07-01), Hegde et al.
patent: 2006/0107108 (2006-05-01), Geng et al.

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