Automatic switchover mechanism in a network device
AssigneeJuniper Networks, Inc.
InventorHsien-Chung WOO
Life of this patent
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Abstract
A system comprises a plurality of processing modules, one of which is designated to be the primary processing module and the others are designated to be secondary processing modules. During operation, state is maintained in the primary processing module and at least one of the secondary processing modules. A switchover controller causes outputs from the secondary modules to be discarded. When the switchover controller receives an indication that the primary processing module has failed, it designates one of the secondary processing modules to be the primary processing module. Because the newly designated primary processing module already has current state information at switchover, the module is able to operate with minimal delay.
Claims2
1-21. (canceled)
A network device comprising:
- a plurality of interface modules, wherein each of the plurality of modules includes:
- a switchover unit;
- and logic to:
- transmit, based on a signal received from the switchover unit, a first packet received from the switchover unit, a duplicate of the first packet, to at least a second forwarding plane of the plurality of forwarding planes.
Dependencies are inferred from the claim text.