Fault tolerant recoverable TCP/IP connection router

Details Fault tolerant recoverable TCP/IP connection router Fault tolerant recoverable TCP/IP connection router

1997-09-15

2000-11-14

Wright, Norman M.

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

714 4, 714 43, 714 56, H02H 305

Patent

active

061484105

ABSTRACT:
A fault tolerant recoverable connection device and methods are disclosed that include a primary router in an active state to provide a connection between clients and servers in a network, and a backup router in a standby state. The states of the primary and backup routers are switched when the primary router fails, the backup router has a better reach-ability state than the primary router, or by an operator command. Each router has a synchronization manager which maintains synchronized tables between the active and standby routers; a monitoring manager which monitors and switch the state of the routers; a reach-ability manager which monitors, updates, and compares the reach-ability set and state of the routers; and a keep alive manager which monitors the routers to provide a status notification to the monitoring manager.

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