Cisco CTX2500 User Manual

2-126
Cisco ONS 15310-MA SDH Troubleshooting Guide, Release 9.0
78-18663-01
Chapter 2 Alarm Troubleshooting
Alarm Procedures
Warning Use of controls, adjustments, or performing procedures other than those specified could result in
hazardous radiation exposure. Statement 1057
Clear the SF (E1, DS3) Condition
Step 1 Complete the “Clear the SD (E1, DS3) Condition” procedure on page 2-122.
Caution Always use the supplied electrostatic discharge wristband when working with a powered
ONS 15310-MA SDH.
Step 2 If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/cisco/web/support/index.html for more information or call Cisco TAC
(1-800-553-2447).
2.7.194 MS-EXC
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SDH Logical Objects: E3, STM
An SF Line condition applies to the line layer B2 overhead byte of the SDH signal. It can trigger a
protection switch. The MS-EXC condition clears when the BER level falls to one-tenth of the threshold
level that triggered the condition. A BER increase is sometimes caused by a physical fiber problem,
including a poor fiber connection, a bend in the fiber that exceeds the permitted bend radius, or a bad
fiber splice.
The condition is superseded by higher-priority alarms such as 2.7.123 LOF (STM) or 2.7.138 LOS
(STM).
Clear the MS-EXC Condition
Step 1 Complete the “Clear the MS-DEG Condition” procedure on page 2-123.
Step 2 If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/cisco/web/support/index.html for more information or call Cisco TAC
(1-800-553-2447).
2.7.195 HP-EXC
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SDH Logical Objects: VCMON-HP, VCTRM-HP
An SF Path condition is similar to an “MS-EXC” condition on page 2-126, but it applies to the path (VC)
layer B3 byte of the SDH overhead. It can trigger a protection switch.

Cisco CTX2500 Specifications

General

Brand	Cisco
Model	CTX2500
Category	Network Card
Language	English