Cisco ONS 15310-CL, Руководство по устранению неисправностей

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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
78-17235-01
Chapter 1 Alarm Troubleshooting
1.7.36 CARLOSS (CE100T)
lear the CARLOSS (CE100T) Alarm
Step 1
Verify that the fiber cable is properly connected and attached to the correct port. For more information
about fiber connections and terminations, refer to the “Install Hardware” chapter in the
Cisco ONS 15310-CL and Cisco ONS 15310-MA Procedure Guide .
Caution Always use the supplied electrostatic discharge wristband when working with a powered ONS 15310-CL
or ONS 15310-MA.
Step 2 If the fiber cable is correctly connected and attached, verify that the cable connects the card to another
Ethernet device.
Step 3
Verify that the attached transmitting Ethernet device is operational. If not, troubleshoot the device.
Step 4 Verify that optical receive levels are within the normal range. The correct specifications are listed in the
“Install Hardware” chapter in the
Cisco ONS 15310-CL and Cisco ONS 15310-MA Procedure Guide .
Step 5
If the alarm does not clear, use an Ethernet test set to determine whether a valid signal is coming into
the Ethernet port. For specific procedures to use the test set equipment, consult the manufacturer.
Step 6
If a valid Ethernet signal is not present and the transmitting device is operational, replace the fiber cable
connecting the transmitting device to the Ethernet port. To do this, refer to the “Install Hardware”
chapter in the
Cisco ONS 15310-CL and Cisco ONS 15310-MA Procedure Guide for procedures.
Step 7
If the alarm does not clear, and link autonegotiation is enabled on the port but the autonegotiation process
fails, the card turns off its transmitter laser and reports a CARLOSS alarm. If link autonegotiation has
been enabled for the port, determine whether there are conditions that could cause autonegotiation to fail
by completing the following steps:
a. Confirm that the attached Ethernet device has autonegotiation enabled and is configured for
compatibility with the asymmetric flow control on the card.
b.
Confirm that the attached Ethernet device configuration allows reception of flow control frames.
Step 8 If the alarm does not clear, disable and reenable the Ethernet port to attempt to remove the CARLOSS
condition. (The autonegotiation process restarts.)
Step 9
If the alarm does not clear and the “TPTFAIL (CE100T)” alarm on page 1-141 is also reported, complete
the “Clear the TPTFAIL (CE100T) Alarm” procedure on page 1-142 . If the TPTFAIL alarm is not raised,
continue with the next step.
Note
When the CARLOSS and the TPTFAIL alarms are reported, the reason for the condition could
be the CE100T-8 card's end-to-end link integrity feature taking action on a remote failure
indicated by the TPTFAIL alarm.
Step 10
If the TPTFAIL alarm was not raised, determine whether a terminal (inward) loopback has been
provisioned on the port by completing the following steps:
a. In node view, click the card to go to card view.
b.
Click the Maintenance > Loopback tabs.
c. If the service state is listed as OOS-MA,LPBK&MT, a loopback is provisioned. Go to Step 11 .
Step 11
If a loopback was provisioned, complete the “Clear an Ethernet Card Loopback Circuit” procedure on
page 1-158 .