Method for detecting duplicate global port identifiers

Details Method for detecting duplicate global port identifiers Method for detecting duplicate global port identifiers

2005-05-06

2009-06-30

Ho, Duc C (Department: 2419)

Multiplex communications

Diagnostic testing

Fault detection

C370S392000, C370S389000

Reexamination Certificate

active

07554924

ABSTRACT:
The present invention provides methods of checking for duplicate port globally unique identifiers during a discovery of a subnet of a system using a channel adapter. These methods allow a Subnet Manager, an Infiniband entity for managing the Infiniband topology, to detect invalid ports that have matching GUIDs. An additional feature is that a recently added port with a duplicate GUID will not replace an original port with the same GUID, but instead will be left out of the network.

REFERENCES:
patent: 2002/0156888 (2002-10-01), Lee et al.
patent: 2003/0208572 (2003-11-01), Shah et al.
patent: 2004/0202189 (2004-10-01), Arndt et al.
patent: 2005/0088979 (2005-04-01), Mehra
patent: 2006/0155880 (2006-07-01), Elnozahy et al.

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