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Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3
May 2002
Chapter 1 Alarm Troubleshooting
Alarm Procedures
Step 4 Verify that the ring ID number matches the ring ID number of the reporting node:
a. If the ring ID matches the ring ID in the reporting ONS node, log into the next ONS node in the
MS-SPRing.
b. If the ring ID does not match the ring ID in the reporting ONS node, change the ring ID to match
the ring ID of the reporting node and click Apply.
c. Click Yes on the Accept Ring Map Changes dialog box.
d. Verify that the ring map is correct.
e. Click Accept for the new MS-SPRing map.
Step 5 Repeat Step 4 for all ONS nodes in the MS-SPRing.
1.5.59 SDBER-EXCEED-HO
• Not alarmed, Service-affecting
A BER threshold exceeded for signal degrade high order alarm applies to optical cards. It is raised when
the signal BER falls within the degrade threshold (typically 1E-7 dB) set on the node.
Warning
The ONS 15454 SDH is a Class I (CDRH) and Class 1M (IEC) laser system.
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 SDBER-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.
1.5.60 SFBER-EXCEED-HO
• Not alarmed, Service-affecting
A BER threshold exceeded for signal failure high order alarm applies to optical cards. It is raised when
the signal BER falls past the fail threshold (typically 1E-4 dB) set on the node.
Warning
The ONS 15454 SDH is a Class I (CDRH) and Class 1M (IEC) laser system.
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