Patent 9030931 was granted and assigned to Arista Networks on May, 2015 by the United States Patent and Trademark Office.
A method for accurately measuring, recording and reporting latency of an Ethernet switch is disclosed. Various packet queues in the switch are monitored at any given time and forwarding latency is calculated. Latency data from multiple switching elements in a network is collected to provide end-to-end forwarding latency of a system.