US 11,770,291 B2
Determining readiness for switchover operations for network devices
Chetandeep Singh, Pleasanton, CA (US); Itthichok Jangjaimon, San Jose, CA (US); and Pawan Hulyalkar, Fremont, CA (US)
Assigned to ARISTA NETWORKS, INC., Santa Clara, CA (US)
Filed by Arista Networks, Inc., Santa Clara, CA (US)
Filed on Oct. 14, 2021, as Appl. No. 17/501,907.
Prior Publication US 2023/0121682 A1, Apr. 20, 2023
Int. Cl. G06F 15/173 (2006.01); G06F 15/16 (2006.01); H04L 41/0695 (2022.01); H04L 41/0663 (2022.01); H04L 41/0654 (2022.01)
CPC H04L 41/0695 (2013.01) [H04L 41/0654 (2013.01); H04L 41/0663 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method executable by a first supervisor module of a network device, the method comprising:
receiving a policy definition specifying a first set of criteria and a set of instructions specifying which of the first set of criteria must be satisfied for the first supervisor module to be determined to be ready for a switchover operation;
based on the set of instructions, determining whether the first supervisor module is ready for the switchover operation,
wherein the switchover operation comprises placing a second supervisor module configured as a backup to the first supervisor module in an active mode taking over the first supervisor module;
determining whether a set of conditions are satisfied; and
when the set of conditions are determined to be satisfied and after the first supervisor module is determined to be ready for the switchover operation, triggering the switchover operation to cause the second supervisor module to be in the active mode.