US 11,943,138 B1
Detecting duplicate network device identifiers for routing protocols
Soumya S. Acharya, Jamshedpur (IN); Vivek Ilangovan, Bangalore (IN); and Ravi Verman, Lucknow (IN)
Assigned to ARISTA NETWORKS, INC., Santa Clara, CA (US)
Filed by Arista Networks, Inc., Santa Clara, CA (US)
Filed on Sep. 26, 2022, as Appl. No. 17/953,284.
Int. Cl. H04L 45/02 (2022.01); H04L 45/12 (2022.01); H04L 45/42 (2022.01)
CPC H04L 45/42 (2013.01) [H04L 45/02 (2013.01); H04L 45/123 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method executable by a first network device in a network, the method comprising:
receiving a link state packet comprising a first network device identifier for use in a routing protocol;
upon determining that the link state packet satisfies a set of conditions, starting a timer;
while the timer has not elapsed, maintaining a count value of link state packets received that satisfy the set of conditions; and
when the timer has elapsed, determining, based on the count value and a defined threshold value, that a second network device in the network is configured with a second network device identifier for use in the routing protocol that is the same as the first network device identifier.