Communications Problem - REALLY Strange/Weird...

Hi Folks,

Just had a weird one happen...

We are running a 620 at V4R1 and connecting branches via a Frame Relay
network with Perle 494e controllers, everything running TCP/IP.

I get a call from one of our bigger branches (which is 20 miles from
here) that they are down. They have been having power trouble lately so
I "assumed" it was that a checked QSYSOPR. NO messages... And they said
they had NOT noticed any power disruption or anything. I had the person
that called power off their workstation and power it back on - nothing.
I varied it off and back on and the system issues a message that the
device is no longer communicating but they STILL have nothing on their
screen. So I ping the router (Cisco) - NO problem. I ping the
controller(s) (each twin ax card in the Perle is looked at as a separate
virtual control unit) and they are BOTH OK...

So I vary each control unit and the associated virtual device off and
back on and EVERYTHING is fine now...

ANYBODY had ANY IDEA what happened or what else I could have checked ?

TIA !!

Chuck

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