Arista Networks, Inc.

Aaron Gregory Levitan

Matthew Gawlowski

Robert J Marinelli

Neal Thomas Nuckolls

Deepak Sebastian

Vincent Cridlig

Grzegorz Poloczek

Yury Murashka

Paulmer Soderberg

A network switch device includes cooling fans to remove heat generated by its electronic circuitry during operation. Multiple cooling zones are provided in a network switch device to enable reduced cooling fan power consumption. The switch device includes a baffle positioned between a first zone and a second zone and across a circuit board. A first cooling fan provides a first airflow through the first zone and across a first portion of the circuit board positioned within the first zone. A second cooling fan provides a second airflow through a second zone of the housing and across a second portion of the circuit board positioned within the second zone. The baffle directs the first airflow away from the second zone and directs the second airflow away from the first zone. Fan speeds of fans in a cooling zone may be adjusted based on temperature sensors positioned in that zone.

Multiple chassis cooling zones

A method performed by a network device for offloading bidirectional forwarding detection (BFD) processes from an operating system of the network device to a physical communication interface on the network device, that includes receiving, by a user space packet manager executing in the operating system, a BFD transmission session request, making a first determination that utilization of an interface processor, of the physical communication interface, is below a threshold, generating, based on the first determination, a transmission packet template, wherein the generation is performed by the user space packet manager, sending, by the user space packet manager, the transmission packet template to the physical communication interface, and initiating, after the sending, a BFD transmission session in the physical communication interface, wherein the initiating is performed by the user space packet manager.

Methods and systems for optimizing bidirectional forwarding detection in hardware

In general, embodiments of the invention relate to a method for modifying a targeted subset of a table row (consisting of assorted data) on a network element. More specifically, a network element agent, executing on the network element, may request that changes be applied to a portion of the assorted data, hence the targeted subset, without affecting the remainder of the table row (which may include data relevant to the responsibilities of other network element agents). Through the application of masking, changes applied only to the targeted subset may be achieved.

Method and system for performing a read-modify-write operation on a network element

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San Francisco, CA, United States of America

Aaron Gregory Levitan