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)
On the CE100T-8, 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 CE100T-8 card. Terminating the transmit laser could raise the CARLOSS alarm
because the loopbacked CE100T-8 port detects the termination. For more information about CE100T-8
cards, refer to the
Cisco ONS 15310-CL and Cisco ONS 15310-MA Ethernet Card Software Feature and
Configuration Guide .
If the port or card does not have a loopback condition, continue with Step 12 .
Step 12
If a CARLOSS alarm repeatedly appears and clears, the reappearing alarm could be a result of
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 by completing the following steps:
Note
An Ethernet manual cross-connect is used when another vendor’s equipment sits between
ONS nodes, and the Open System Interconnection/Target Identifier Address Resolution Protocol
(OSI/TARP)-based equipment does not allow tunneling of the 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.
a.
Right-click anywhere in the row of the CARLOSS alarm.
b. Right-click or left-click Select Affected Circuits in the shortcut menu that appears.
c.
Record the information in the type and size columns of the highlighted circuit.
d.
Examine the layout of your network and determine which node and card are hosting the Ethernet
circuit at the other end of the Ethernet manual cross-connect using the following substeps:
•
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 port to an OC-N port at
the same node.
e.
Determine whether the two Ethernet circuits on each side of the Ethernet manual cross-connect have
the same circuit size from the circuit size information you recorded.
f.
If one of the circuit sizes is incorrect, complete the “Delete a Circuit” procedure on page 1-156 and
reconfigure the circuit with the correct circuit size. Refer to the “Create Circuits” chapter in the
Cisco ONS 15310-CL and Cisco ONS 15310-MA Procedure Guide for detailed procedures to do
this.
Step 13
If a valid Ethernet signal is present, complete the “Remove and Reinsert (Reseat) a Card” procedure on
page 1-155 .
Step 14 If the alarm does not clear, complete the “Physically Replace a Card” procedure on page 1-155 for the
Ethernet card.
Note
When you replace a card with the identical type of card, you do not need to make any changes
to the database.