Patent ID: 9049256
Filing Date: 2015-06-02
Classification: G06F,H04L

Abstract:
1. A method comprising: setting, by a network device that includes a first control board and a second control board, a first control plane on the first control board to be active, establishing, by the first control plane, the second fabric plane to be active; establishing, by the first control plane, the first fabric plane to be in standby; establishing, by the first control plane, the second control plane to be in standby; detecting, by the second control plane, a failure of the first control plane while the second control plane is in standby; switching, by the second control plane and based on the second control plane becoming aware of the failure of the first control plane, the second control plane from being in standby to being active without switching the second fabric plane or the first fabric plane; determining, by the second control plane, that the first control plane has been restored; and initiating, by the second control plane and based on determining that the first control plane has been restored, a return of the network device to a partially redundant configuration while the second fabric plane and the second control plane are active,