Cisco ONS 15454 Troubleshooting Manual page 258

2.7.54 CARLOSS (G1000)
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.)
If the alarm does not clear and the
Step 9
the "Clear the TPTFAIL (G1000) Alarm" procedure on page
continue to the next step.
Note
If the TPTFAIL alarm was not raised, determine whether a terminal (inward) loopback has been
Step 10
provisioned on the port:
a. In node view, click the card to go to card view.
Click the Maintenance > Loopback tabs.
b.
If the service state is listed as OOS-MA,LPBK&MT, a loopback is provisioned. Go to
c.
If a loopback was provisioned, complete the
Step 11
procedure on page
On the G1000-4, provisioning a terminal (inward) loopback causes the transmit laser to turn off. If an
attached Ethernet device detects the loopback as a loss of carrier, the attached Ethernet device shuts off
the transmit laser to the G1000-4 card. Terminating the transmit laser could raise the CARLOSS alarm
because the loopbacked G1000-4 port detects the termination.
If the does not have a loopback condition, continue to
If a CARLOSS alarm repeatedly appears and clears, the reappearing alarm could be a result of
Step 12
mismatched STS circuit sizes in the setup of the manual cross-connect. Perform the following steps if
the Ethernet circuit is part of a manual cross-connect:
Note
Right-click anywhere in the row of the CARLOSS alarm.
a.
Right-click or left-click Select Affected Circuits in the shortcut menu that appears.
b.
Record the information in the type and size columns of the highlighted circuit.
c.
Examine the layout of your network and determine which ONS 15454 and card are hosting the
d.
Ethernet circuit at the other end of the Ethernet manual cross-connect and complete the following
substeps:
Cisco ONS 15454 Troubleshooting Guide, R8.5
2-64
When the CARLOSS and the TPTFAIL alarms are reported, the reason for the condition could
be the G1000-4 card's end-to-end link integrity feature taking action on a remote failure
indicated by the TPTFAIL alarm.
2-277.
An ONS 15454 Ethernet manual cross-connect is used when another vendor's equipment sits
between ONS nodes, and the OSI/TARP-based equipment does not allow tunneling of the
ONS 15454 TCP/IP-based DCC. To circumvent a lack of continuous DCC, the Ethernet circuit
is manually cross connected to an STS channel riding through the non-ONS network.
• Log into the node at the other end of the Ethernet manual cross-connect.
Double-click the Ethernet card that is part of the Ethernet manual cross-connect.
•
Click the Circuits tab.
•
Record the information in the type and size columns of the circuit that is part of the Ethernet
•
manual cross-connect. The cross-connect circuit connects the Ethernet card to an OC-N card at
the same node.
"TPTFAIL (G1000)" alarm on page 2-248
"Clear Other Electrical Card or Ethernet Card Loopbacks"
Step 12.
Chapter 2 Alarm Troubleshooting
is also reported, complete
2-248. If the TPTFAIL alarm is not raised,
Step 11.
November 2009