US Patent No. 10,326,613

METHOD AND SYSTEM FOR PROCESSING SPANNING TREE PROTOCOL (STP) STATE IN A MULTICHASSIS LINK AGGREGATION (MLAG) DOMAIN


Patent No. 10,326,613
Issue Date June 18, 2019
Title Method And System For Processing Spanning Tree Protocol (stp) State In A Multichassis Link Aggregation (mlag) Domain
Inventorship Jeevan Kamisetty, San Jose, CA (US)
Soumen Biswas, San Jose, CA (US)
Assignee Arista Networks, Inc., Santa Clara, CA (US)

Claim of US Patent No. 10,326,613

1. A method for processing spanning tree protocol (STP) state in a multichassis link aggregation (MLAG) domain, comprising:receiving, by an active MLAG peer of the MLAG domain, a first bridge protocol data unit (BPDU) from a first external computing system (ECS) operatively connected to the MLAG domain;
deriving a first STP state from the first BPDU;
making a first determination that the first STP state is different from a previous STP state;
processing, based on the first determination, the first STP state to obtain a first new STP state;
receiving, by the active MLAG peer, a second STP state from a standby MLAG peer of the MLAG domain through a MLAG peer link;
processing the second STP state to obtain a second new STP state; and
transmitting the second new STP state to the standby MLAG peer through the MLAG peer link.