US 12,443,257 B2
Low cost fail-2-wire circuit
Subramaniam Veerabagu, Santa Clara, CA (US); and Jeslin Antony Puthenparambil, San Jose, CA (US)
Assigned to Palo Alto Networks, Inc., Santa Clara, CA (US)
Filed by Palo Alto Networks, Inc., Santa Clara, CA (US)
Filed on Jul. 24, 2023, as Appl. No. 18/225,426.
Prior Publication US 2025/0036180 A1, Jan. 30, 2025
Int. Cl. G06F 1/28 (2006.01)
CPC G06F 1/28 (2013.01) 20 Claims
OG exemplary drawing
 
1. A system, comprising:
a power loss detector, wherein the power loss detector monitors a power supply to a monitored networking device to detect an imminent power loss, wherein a port of the monitored networking device is connected to a bypass module; and
the bypass module that includes:
a bypass controller, wherein the bypass controller:
in response to detecting the imminent power loss, determines whether to bypass the monitored networking device based at least in part on a bypass enable, wherein the bypass enable is set to a value that depends upon a role associated with the monitored networking device; and
in the event it is determined to bypass the monitored networking device, configure an electromechanical relay in the bypass module to create a new connection associated with the port of the monitored networking device that bypasses the monitored networking device, wherein the configured electromechanical relay maintains the new connection for at least some time after the imminent power loss; and
the electromechanical relay.