Electrical computers and digital processing systems: multicomput – Computer-to-computer protocol implementing
Reexamination Certificate
2002-06-26
2011-10-11
Follansbee, John (Department: 2451)
Electrical computers and digital processing systems: multicomput
Computer-to-computer protocol implementing
C709S224000, C709S227000, C709S206000, C370S466000, C370S467000, C370S468000, C370S469000
Reexamination Certificate
active
08037196
ABSTRACT:
A method for supporting communication between communication devices (102, 104, 106) having inconsistent protocols, such as may result from protocol changes or upgrades. Protocol registers (302, 304) maintained in association with the communication devices contain respective first and second protocols (e.g., current and previous protocols) of the communication devices. A sending (or receiving) device, upon being upgraded from protocol C to N, updates (206) its protocol register to indicate N as the current protocol and C as the previous protocol. The device initially attempts to send (222) a message (or attempts212to recognize a message) using its current protocol N and, if that fails, the device sends (230) (or attempts216to recognize the message) using its previous protocol C. In such manner, when a communication device is upgraded to a new protocol causing a protocol inconsistency with a peer device, the communication device may revert to its previous protocol to restore communication relatively quickly.
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Alcatel Lucent
Daftuar Saket K
Follansbee John
Santema Steven R.
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