Oddiraju, Kiran @ London SMC wrote:
Our T3 controller is down and the SP has asked me what I am seeing on my
end. Below is the show controllers command on my router. Could you tell
me where the problem is based on the output below?
Router#sh controllers t3
T3 3/0 is down.
Applique type is Subrate T3
Description: Carrier_Circuit_ID
Transmitter is sending remote alarm.
Receiver is getting AIS.
You're seeing AIS from the carrier and sending 'remote alarm' because of
the inbound AIS.
My circuit-fu is a little rusty, but I think this means that the inbound
side of the circuit is good end-to-end, but the outbound side of the
circuit has a problem between your end and the other end. The far-side
router (or whatever) is seeing an LOS/LOF/xxx and is announcing that to
your router.
Middle of circuit, towards far side:
<something's broken>
Far side of circuit:
<bad-DS3-error> into router
AIS out of router
Circuit, towards near side:
AIS (indicates problem on opposite side of circuit)
Near side of circuit:
AIS into router (opposite direction is bad)
<remote-alarm> out of router (acknowledging same-direction alarm to carrier)
pt
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