Uneq-V - Cisco ONS 15327 User Documentation

Chapter 14 Alarm Troubleshooting
Select Circuits from the menu.
Step 2
Step 3 If the specified circuit is a VT tunnel, check for VTs assigned to the VT tunnel.
If the VT tunnel has no assigned VTs, delete the VT tunnel from the list of circuits.
Step 4
If you have complete visibility to all nodes, check for incomplete circuits such as stranded bandwidth
Step 5
from circuits that were not deleted completely.
If you find incomplete circuits, verify whether they are working circuits and if they are still passing
Step 6
traffic.
Step 7 If the incomplete circuits are not needed or are not passing traffic, delete them and log out of CTC. Log
back in and check for incomplete circuits again. Recreate any needed circuits.
Verify that all circuits terminating in the reporting card are active:
Step 8
a.
b.
c.
After you determine that the port is active, verify the signal source received by the card reporting the
Step 9
alarm.
Check the far-end OC-N card that provides STS payload to the card.
Step 10
Verify the far-end cross-connect between the OC-N card and the DS-N card.
Step 11
Clean the far-end optical fiber:
Step 12
a.
b.

14.4.125 UNEQ-V

•
A signal label mismatch failure unequipped path (UNEQ-V) alarm indicates that the node is receiving
SONET path overhead with bits 5, 6, and 7 of the V5 overhead byte all set to zeros. The source of the
problem is the node that is transmitting the VT-level signal into the node reporting the UNEQ-P. The
problem node is the next node upstream that processes the signal at the VT level.
The V in UNEQ-V indicates that the failure has occurred at the VT layer. The VT (electrical) layer is
created when the SONET signal is broken down into an electrical signal, for example, when an optical
signal comes into an ONS 15327, the optical signal is demultiplexed and one of the channels separated
from the optical signal is cross connected into an ONS 15327 cross-connect (XC/XCVT/XC10G) card
and the corresponding DS-N card.
Invisible laser radiation may be emitted from the aperture ports of the single-mode, fiber-optic
Warning
modules when no cable is connected. Avoid exposure and do not stare into open apertures.
June 2002
Click the Circuits tab.
Verify that the State column lists the port as ACTIVE.
If the State column lists the port as INCOMPLETE. If INCOMPLETE does not change after a full
initialization, login to http://www.cisco.com/TAC for more information or call the Cisco Technical
Assistance Center to report a service-affecting problem (1-800-553-2447).
Clean the fiber according to local site practice.
If no local practice exists, use a CLETOP Real-Type or equivalent fiber-optic cleaner and follow the
instructions accompanying the product.
Major, Service-Affecting
Cisco ONS 15327 User Documentation, R3.3
Alarm Procedures
14-85