Carloss (Eqpt) - Cisco ONS 15327 User Documentation

Chapter 14 Alarm Troubleshooting
Step 8 If a CARLOSS alarm repeatedly appears and clears, examine the layout of your network to determine if
or not the Ethernet circuit is part of an Ethernet manual cross-connect. If the reporting Ethernet circuit
is part of an Ethernet manual cross-connect, then the reappearing alarm may be a result of mismatched
STS circuit sizes in the setup of the manual cross-connect. If the Ethernet circuit is not part of a manual
cross-connect, these steps do not apply.
Note
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14.4.24 CARLOSS (EQPT)

•
This carrier loss alarm means the ONS 15327 and the workstation hosting CTC do not have a TCP/IP
connection. It is a problem involves the LAN or data circuit used by the RJ-45 connector on the XTC
card or the LAN backplane pin connection on the back of the ONS 15327. It does not involve an Ethernet
circuit connected to a port on Ethernet card. The problem is in the connection (usually a LAN problem)
and not CTC or the ONS 15327.
June 2002
When replacing a card with an identical type of card, no additional CTC provisioning is
Note
required.
A Ethernet manual cross-connect is used when equipment from another vendor sits between
ONS 15327s, and the OSI/TARP-based equipment does not allow tunneling of the ONS 15327
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.
Right-click anywhere on the row of the CARLOSS alarm.
Right-click or left-click the Select Affected Circuits dialog box that appears.
Record the information in the type and size columns of the highlighted circuit.
From the examination of the layout of your particular network, determine the ONS 15327 and card
that host the Ethernet circuit at the other end of the Ethernet manual cross-connect.
Login to the ONS 15327 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. This circuit connects the Ethernet card to an OC-N card on the same node.
Determine if 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.
If one of the circuit sizes is incorrect, navigate to the incorrectly configured circuit.
Click the incorrectly configured circuit to highlight it and click Delete.
Click Yes at the Delete Circuit dialog box, and OK at the Confirmation dialog box.
Reconfigure the circuit with the correct circuit size. See
procedures to provision Ethernet manual cross-connects.
Minor, Non-Service-Affecting
Chapter 9, "Ethernet Operation"
Cisco ONS 15327 User Documentation, R3.3
Alarm Procedures
for
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