US 12,250,067 B2
Precision time protocol with multi-chassis link aggregation groups
Petr Budnik, Vancouver (CA); Jeff Jing Yuen Chan, Burnaby (CA); and Avininderpal Singh Grewal, Langley (CA)
Assigned to ARISTA NETWORKS, INC., Santa Clara, CA (US)
Filed by Arista Networks, Inc., Santa Clara, CA (US)
Filed on Oct. 12, 2022, as Appl. No. 17/964,500.
Application 17/964,500 is a division of application No. 16/853,530, filed on Apr. 20, 2020, granted, now 11,502,766.
Prior Publication US 2023/0092840 A1, Mar. 23, 2023
Int. Cl. H04J 3/06 (2006.01); H04L 45/24 (2022.01); H04L 67/1095 (2022.01)
CPC H04J 3/0667 (2013.01) [H04J 3/0697 (2013.01); H04L 45/245 (2013.01); H04L 67/1095 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method in a peer group comprising a first peer switch and a second peer switch, the method comprising:
the peer group receiving a synchronization message from a network element in connection with a synchronization session between the first peer switch and the network element, the peer group and the network element connected by a plurality of links, wherein the synchronization message is received by the first peer switch on a first link between the first peer switch and the network element;
the first peer switch forwarding a message to the second peer switch based on the received synchronization message;
in response to receiving a forwarded message of a first kind, the second peer switch forwarding to the first peer switch subsequent synchronization messages in connection with the synchronization session that are received from the network element on a second link between the second peer switch and the network element, wherein the first peer switch conducts the entire synchronization session with the network element on the first link using synchronization messages forwarded from the second peer switch; and
in response to receiving a forwarded message of a second kind, the second peer switch becoming inactive with respect to sending any synchronization messages to the network element on the second link, wherein the first peer switch conducts the entire synchronization session with the network element on the first link.