Got called by OPS about all Hall A IOCs being down. After discovering eosasw1 was hard down, I came in to troubleshoot the hardware. The switch, which is located in the Labrynth, I found it was completely failed. Am pulling a spare and configuring it now for installation. Brad is on his way to lead the replacement but I will start it now.
Sys Admin called in to report that cause behind the lost iocs are a couple of downed (hard) network switches that needed to be power cycled. One of those switches is located in the labyrinth. While Sys Admin was on the way in, it was suggested someone could go into the labyrinth to reset one of the two switches. That was done and CEBAF is now able to send CW beam back to xB/xD. Due iocs still being unresolved in xA, they will not receive beam until the switch (located in hall counting house) is power cycled.