Infiniband router having an internal subnet architecture

Details Infiniband router having an internal subnet architecture Infiniband router having an internal subnet architecture

2007-12-11

2007-12-11

Ho, Duc (Department: 2619)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S389000, C370S392000

Reexamination Certificate

active

10208430

ABSTRACT:
An Infiniband (IB) router with an internal subnet architecture is disclosed. It comprises multiple port interface circuits interconnected by an internal IB subnet. The multiple port interface circuits each connect to an external IB subnet and preferably determine new local route headers (LRH) for global IB packets (i.e. packets having a global route header (GRH)). The new LRHs for externally received packets include a destination local identifier (DLID) value that identifies another port interface circuit in the router, whereas the new LRHs for internally received packets include a DLID value that identifies an end node or router in the external subnet to which the port interface circuit is attached. The internal IB subnet transports IB packets between the port interface circuits, directing them according to the contents of the LRHs. The internal subnet may take the form of an IB switch or a network of IB switches.

REFERENCES:
patent: 2002/0172195 (2002-11-01), Pekkala et al.
patent: 2002/0198927 (2002-12-01), Craddock et al.
patent: 2004/0001503 (2004-01-01), Manter
patent: 2004/0013088 (2004-01-01), Gregg
InfiniBand Trade Association;InfiniBand Architecture Specification Volume 1, Release 1.0.a; (913 p.); Jun. 19,2001.

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