Installation guide

18-9
Cisco 10000 Series Routers Line Card Hardware Installation Guide
OL-6773-04
Chapter 18 Troubleshooting the Installation
Channelized Line Cards Troubleshooting Information
The optical fiber cable is
broken.
As an experiment to isolate the
failure, use a small loopback cable
to connect the Cisco 10000 line
card to itself. If the LED lights
under this condition, continue to
investigate cable or far-end
equipment failure. Try replacing
the optical fiber cable.
Y—Y ——
Defective line card. Replace the line card.
With the BNC
cable connected
and the line card
configured under
Cisco IOS, the
CARRIER LED
does not
illuminate.
The cable is not seated
correctly.
Unplug and replug the cable. Y — — — Y
The cable is plugged in
backward.
Verify that the transmit of the far
end is plugged into the receive of
the Cisco 10000 equipment and
vice versa.
The equipment at the far end of
the cable is not operational.
Verify that the far end is enabled
and actively sending a signal
down the cable.
The cable is broken. As an experiment to isolate the
failure, use a small loopback cable
to connect the Cisco 10000 line
card to itself. If the LED lights
under this condition, continue to
investigate cable or far-end
equipment failure. Try replacing
the cable.
Defective line card. Replace the line card.
Table 18-2 Channelized Line Card Troubleshooting Information
Symptom Possible Cause Corrective Action
Ch.
T3
HH
Ch.
E1/T1
Ch.
OC-12/
STM-4
Ch.
OC-3/
STM-1
Ch.
T3