Cisco ONS 15454 SDH Specifications Page 73

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Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3
May 2002
Chapter 1 Alarm Troubleshooting
Alarm Procedures
Warning
Invisible laser radiation may be emitted from the aperture ports of the single-mode fiber optic
modules when no fiber cable is connected. Avoid exposure and do not stare into open apertures.
Procedure: Clear the SFBER-EXCEED-HO Alarm
Step 1 Determine the BER threshold by clicking the card reporting the alarm, and clicking the Provisioning tab.
Step 2 If it is acceptable in site practices, adjust the threshold.
Step 3 Check the input power levels to the reporting card.
Step 4 Check input fiber cable connections to the reporting card.
Step 5 Clean the input fiber cable ends according to site practices.
1.5.61 SFTWDOWN
Minor, Non-service affecting
A software download in progress alarm occurs when the TCC-I is downloading or transferring software.
No action is necessary. Wait for the transfer or the software download to complete.
1.5.62 SNTP-HOST
Minor, Non-service affecting
The SNTP (Simple Network Timing Protocol) host failure alarm indicates that an ONS node serving as
an IP proxy for the other ONS nodes in the ring is not forwarding SNTP information to the other ONS
nodes in the network. This failure can result from two causes: the IP network attached to the ONS proxy
node could be experiencing problems, or the ONS proxy node itself is not functioning properly.
Procedure: Clear the SNTP-HOST Alarm
Step 1 Ping the SNTP host from a workstation in the same subnet to ensure that communication is possible
within the subnet.
Step 2 If the ping fails, contact the network administrator that manages the IP network supplying the SNTP
information to the proxy and determine whether the network is experiencing problems which may affect
the SNTP server/router connecting to the proxy ONS 15454 SDH.
Step 3 Ensure that the ONS 15454 SDH is provisioned correctly:
a. On the ONS node serving as the proxy, click the CTC Provisioning > General tabs.
b. Ensure the Enable Proxy check box is checked.
c. If the Enable Proxy check box is not checked, check this box.
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