Arista Networks, Inc.

Edward K Chien

Fakherdin Kalla

Geoffrey Hanson

Vincent Cridlig

Devices and methods for managing boot personalities in a network device are disclosed. The method includes, after powering on the network device, a programmable component of the network device outputting a first signal unique to a first boot personality. One or more switches are toggled based on the first signal. The toggling results in connecting at least one of one or more first components in the network device associated with the first boot personality and disconnecting at least one of one or more second components in the network device associated with a second boot personality.

Supporting different security schemes after power cycle with different boot personalities for network devices

Techniques for optimizing airflow in a network device are provided. In one set of embodiments, a network device can identify one or more device components whose temperature thresholds may be adjusted to be higher (or in other words, more aggressive) than their normal values. The network device can then increase the temperature thresholds for those identified components and use the increased thresholds as static inputs to a fan control algorithm of the device. In another set of embodiments, the network device can check the current airflow within the device on a periodic basis. If the current airflow does not meet an airflow requirement, the network device can incrementally increase the temperature thresholds of the identified components, provide the increased thresholds to its fan control algorithm, and subsequently re-check the current airflow. These steps can repeat until the current airflow meets the airflow requirement.

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Los Altos, CA, United States of America

Edward K Chien