| 摘要 |
A system for maintaining routing capabilities in a router (100) having a failed control plane provides an active control plane (110) in the router (100) in communication with at least one external node (150, 160, 170), the active control plane (110) running at least one routing process. A backup control plane (120) may be interconnected with the active control plane (110), so that the active control plane (110) may periodically transmit synchronization signals (104) to the backup control plane (120). The backup control plane (120) may update its state based on these synchronization signals (104). Moreover, the backup control plane (120) may be programmed to take over the routing process of the active control plane (110) if the active control plane (110) fails.
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