14-78
Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 14 Alarm Troubleshooting
Alarm Procedures
Procedure: Clear the SNTP-HOST Alarm
Step 1
Contact the network administrator that manages the IP network supplying the SNTP information to the
proxy and determine if the network is experiencing problems which may affect the SNTP server/ router
connecting to the proxy ONS 15327.
Step 2
On the ONS node serving as the proxy, click the CTC
Provisioning
>
General
tabs.
Step 3
Ensure that the
Enable Proxy
check box is checked.
Step 4
If the
Enable Proxy
check box is not checked, check this box.
Step 5
Refer to the ONS 15454 Reference Manual for more information on SNTP Host.
14.4.111 SQUELCH
•
Not Alarmed, Non-Service-Affecting (Condition)
The ring is squelching traffic (SQUELCH) alarm occurs in a BLSR when a node that originates or
terminates STS circuits fails or is isolated by multiple fiber cuts or maintenance force ring commands.
The isolation or failure of the node disables the circuits that originate or terminate on the failed node.
Squelch alarms appear on one or both of the nodes on either side of the isolated/failed node. The AIS-P
alarm also appears on all nodes in the ring, except the isolated node.
Warning
Invisible laser radiation may be emitted from the aperture ports of the single-mode, fiber-optic
modules when no cable is connected. Avoid exposure and do not stare into open apertures.
Warning
Invisible laser radiation may be emitted from the end of the unterminated fiber cable or connector. Do
not stare into the beam directly with optical instruments. Viewing the laser output with certain optical
instruments (for example, eye loupes, magnifiers, and microscopes) within a distance of 100 mm may
pose an eye hazard. Use of controls or adjustments or performance of procedures other than those
specified may result in hazardous radiation exposure.
Caution
Always use the supplied ESD wristband when working with a powered ONS 15327. Plug the wristband
cable into the ESD jack located on the lower-right outside edge of the shelf assembly.
Procedure: Clear the SQUELCH Condition
Step 1
Determine the isolated node:
a.
Display the CTC network view.
b.
The grayed out node with red spans is the isolated node.
Step 2
Verify fiber continuity to the ports on the isolated node.
Step 3
Verify that the proper ports are in service.
Step 4
Use an optical test set to verify that a valid signal exists on the line.
Summary of Contents for ONS 15327
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Page 30: ...Figures xxviii Cisco ONS 15327 User Documentation June 2002 ...
Page 44: ...Procedures xlii Cisco ONS 15454 Installation and Operations Guide R3 2 June 2002 ...
Page 540: ...Glossary GL 16 Cisco ONS 15327 User Documentation R3 3 June 2002 ...