Electrical computers and digital processing systems: multicomput – Computer-to-computer data routing
Reexamination Certificate
2007-11-06
2007-11-06
Winder, Patrice (Department: 2143)
Electrical computers and digital processing systems: multicomput
Computer-to-computer data routing
C714S012000, C719S313000
Reexamination Certificate
active
10026311
ABSTRACT:
High availability for a fibre channel switch in a storage area network can be implemented using redundant supervisors. An active supervisor can identify high availability characteristics associated with a message and determine whether the message should be mirrored onto a redundant supervisor, logged, and/or made persistent. Messages can be logged in a pending transaction buffer and stored using persistent storage services. Mirroring can be performed using synchronization queues that allow messages to be passed asynchronously to a redundant supervisor while maintaining full synchronization between supervisors and causing little delay to operation of the active supervisor.
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Marco Di Benedetto, Mrinal Baruah, Chengelpet V. Ramesh, Alagu Annaamalai, Ramana Mellacheruvu, Sridhar K. Aswathnarayan, Hei T. Fung, And Umesh Mahajan, “High Availability Architecture for Network Devices”, U.S. Appl. No. 09/714,246, filed Nov. 16, 2000.
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Benedetto Marco Di
Mahajan Umesh
McEwan John B.
Mellacheruvu Ramana
Beyer & Weaver, LLP
Bilgrami Asghar
Cisco Technology Inc.
Winder Patrice
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