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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
Chapter 2 Alarm Troubleshooting
2.7.248 VCG-DOWN
Note For more information about Ethernet cards, refer to the Cisco ONS 15310-CL and Cisco ONS 15310-MA
Ethernet Card Software Feature and Configuration Guide.
Clear the VCG-DEG Condition
Step 1 Look for and clear any Critical (CR) alarms that apply to the errored card or port.
Step 2 If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/techsupport for more information or call Cisco TAC (1-800-553-2447).
2.7.248 VCG-DOWN
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Object: VCG
The VCAT Group Down alarm is a VCAT group alarm. The condition occurs when both member circuits
carried by the ML-100T-8 Ethernet card are down. This condition occurs in conjunction with another
Critical (CR) alarm.
Note For more information about Ethernet cards, refer to the Cisco ONS 15310-CL and Cisco ONS 15310-MA
Ethernet Card Software Feature and Configuration Guide.
Clear the VCG-DOWN Condition
Step 1 Complete the “Clear the VCG-DEG Condition” procedure on page 2-145.
Step 2 If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/techsupport for more information or call Cisco TAC (1-800-553-2447).
2.7.249 VT-SQUELCH-L
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
The Ring is Squelching VT Traffic condition is raised on an OC-N facility. If the node failure scenario
includes the source node, the node dropping VT will squelch VT traffic. The condition resolves when
the node failure is recovered.
This condition is raised as NA severity by default. However, it indicates that traffic is squelched due to
node failure, that is, traffic outage. Traffic outage can be caused by different problems, such as multiple
LOS alarms, AIS-L, or node power outage. VT-SQUELCH-L is symptomatic and indicates that the user
must investigate which node in a ring is being isolated and what causes node isolation.
Note VT-SQUELCH-L is an informational condition.