Pensando Systems Inc.

Barun Halder

Alok Rathore

Krishna Doddapaneni

Sarat Kamisetty

Parag Dattatraya Bhide

Neel C Patel

Hareesh Ramachandran

David Antony Clear

James Bradley Smith

Prabu Thayalan

Rohan Sikdar

Ratnananda Ganesh Dontula Venkata

Sarat Babu Kamisetty

Described are edge devices configured to perform operations to migrate a workload. These operations comprise: receiving a migration trigger comprising an indication of a migration of a workload from a source edge device; establishing a secure communication channel with the source edge device; receiving a network state for the workload from the source edge device; quiescing a datapath for processing flows associated with the workload; receiving incremental deltas comprising changes to the network state from the source edge device; updating the datapath for processing flows associated with the workload based on the received incremental changes; providing, to the source edge device, a request for a final synchronization; receiving, from the source edge device, a final synchronization delta comprising incremental information for the network state as modified since the most recently received incremental change; and removing the quiescing of the datapath to facilitate use of the network state.

Network state synchronization for workload migrations in edge devices

Described are platforms, systems, and methods for upgrading firmware on a programmable input output (IO) device. In one aspect, a method executed by the programmable IO device comprises: receiving, from a north-bound entity, a request to upgrade firmware installed on at least one CPU core; disabling flow-miss traffic to the at least one CPU core; redirecting the flow-miss traffic to an off-box service; providing a configuration for the programmable IO device to the off-box service; redirecting traffic to the off-box service; upgrading the firmware installed on the at least one CPU core; upgrading at least one program running in the data plane; reprograming a forwarding state provided by the off-box service; disabling the redirection of the traffic to the off-box service; and providing, to the north-bound entity, a notification indicating a completion of the upgrade.

Zero packet loss upgrade of an IO device

Methods and systems for upgrading an intelligent server adapter (ISA) with reduced downtime that affects performance are provided. The method includes, from a main agent, initiating a backup agent that includes critical functions of the ISA and runs in a tight loop, isolated from other components. The main agent transfers critical duties to the backup agent and shuts down before performing the upgrade. After upgrading itself and other system components, the main agent retrieves the duties from the backup agent, and may terminate the backup agent.

State-preserving upgrade of an intelligent server adapter

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San Jose, CA, United States of America

Barun Halder