Packet processing using encapsulation and decapsulation chains

Details Packet processing using encapsulation and decapsulation chains Packet processing using encapsulation and decapsulation chains

2011-06-28

2011-06-28

Dharia, Rupal D (Department: 2456)

Electrical computers and digital processing systems: multicomput

Multiple network interconnecting

C709S236000, C709S238000, C709S250000, C370S229000, C370S255000, C370S392000, C370S353000, C370S352000

Reexamination Certificate

active

07970948

ABSTRACT:
In an embodiment, a network router includes plural interfaces and a chain walker which, upon receipt of a first protocol packet in a first interface, processes the packet by walking the packet through a decapsulation chain associated with the interface and the first protocol and an encapsulation chain associated with an identified second interface and identified second protocol. The walker passes the packet to elements of the decapsulation chain to produce a decapsulated packet. The walker passes the decapsulated packet to elements of an encapsulation chain to produce an encapsulated packet. Each chain includes at least one packet-processing element. An element receives the packet from the walker as processed by a previous element, the packet being further processed as appropriate. The walker, upon receipt of the first protocol packet, passes the packet to elements of a demultiplexer chain associated with the first interface to produce a demultiplexed packet.

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