Method and apparatus for relaying packets based on class of...

Details Method and apparatus for relaying packets based on class of... Method and apparatus for relaying packets based on class of...

2005-11-15

2005-11-15

Hsu, Alpus H. (Department: 2665)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S401000, C709S239000

Reexamination Certificate

active

06965599

ABSTRACT:
A packet relay apparatus is disposed that relays packets between an inside node and an outside IP network. A class processing unit classifies send packets to be relayed to the IP network and allocates different virtual IP addresses thereto. A send packet relay unit translates source addresses of the send packets to be relayed to the IP network into virtual IP addresses on a class by class basis, to establish classified IP communication paths. For reply packets from the IP network passing through communication paths on a class by class basis, a reply packet relay unit inversely translates destination virtual IP addresses into original addresses by reference to the results of address translation effected by the send packet relay unit.

REFERENCES:
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patent: 6366558 (2002-04-01), Howes et al.
patent: 6457061 (2002-09-01), Bal et al.
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patent: 6768743 (2004-07-01), Borella et al.
patent: 2002/0010799 (2002-01-01), Kubota et al.
patent: 2002/0186698 (2002-12-01), Ceniza

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