Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2005-04-05
2005-04-05
Nguyen, Chau (Department: 2663)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S401000, C370S414000, C370S428000
Reexamination Certificate
active
06876657
ABSTRACT:
Hardware interconnected around multiple packet forwarding engines prepends sequence numbers to packets going into multiple forwarding engines through parallel paths, After processing by the multiple forwarding engines, packets are reordered using queues and a packet ordering mechanism, such that the sequence numbers are put back into their original prepended order. Exception packets flowing through the forwarding engines do not follow a conventional fast path, but are processed off-line and emerge from the forwarding engines out of order relative to fast path packets. These exception packets are marked, such that after they exit the forwarding engines, they are ordered among themselves independent of conventional fast path packets. Viewed externally, all exception packets are ordered across all multiple forwarding engines independent of the fast path packets.
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European Search Report, dated Feb. 19, 2004, 4 pages.
Brewer Tony M.
Dugan Michael K.
Kleiner Jim
Palmer Gregory S.
Vogel Paul F.
Chiaro Networks Ltd.
Fulbright & Jaworski LLP
Juntima Nittaya
Nguyen Chau
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