2-97
Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
July 2010
Chapter 2 Alarm Troubleshooting
2.6.148 MS-AIS
•
A 1+1 APS is identified on the node view Maintenance > Protection tab. If you click the protection
group, under the Selected Group list, the ports are designated as Working/Standby and
Protect/Active.
Step 3
If the reporting port is part of an SNCP, complete the
“Initiate a Force Switch for All Circuits on a SNCP
. If the port is part of a 1+1 protection group, complete the
Protection Port Force Switch Command” procedure on page 2-123
Step 4
If the reporting card is a SSXC card and an automatic switch to the preferred copy SSXC card occurred,
traffic automatically switches to the alternate copy.
Complete a
“Hard-Reset a Card Using CTC” procedure on page 2-131
for the reporting card (or
“Soft-Reset a Card Using CTC” procedure on page 2-130
for the SSXC.
Step 5
If the reset does not clear the alarm, complete the
“Reset a Card with a Card Pull (Reseat)” section on
for the TSC card, or complete the
“Request a Cross-Connect Card Preferred Copy Switch”
for the SSXC.
Step 6
If the physical reseat of the card or switch does not clear the alarm, complete the appropriate procedure
in the
“Replace a TSC Card” section on page 2-136
or
“Replace an SSXC Card” section on page 2-133
as needed.
Note
If the traffic (STM-N) card is implicated and you are able to continue using the traffic card with
one port out of service, perform a bridge and roll to move the port traffic to a free port using the
“Bridge and Roll Traffic” procedure in the “Manage Circuits” chapter in the
Cisco ONS 15600 SDH Procedure Guide
. Label the bad port, and place it out of service until
such time as the card can be replaced.
Step 7
If the MFGMEM alarm continues to report after you replaced the card, the problem lies in the EEPROM.
Log into the Technical Support Website at http://www.cisco.com/techsupport for more information or
call Cisco TAC (1 800 553-2447).
Step 8
If the alarm clears and it was reported by a traffic card, traffic reverts to the working port if an automatic
switch occurred. If traffic was manually switched in a 1+1 protection group, revert traffic to the original
port by completing the
“Clear a 1+1 Protection Port Force or Manual Switch Command” procedure on
. If traffic was manually switched in an SNCP, revert traffic to the original path by completing
the
“Clear a SNCP Span External Switching Command” procedure on page 2-127
If an automatic switch to the alternate copy SSXC card occurred, traffic is automatically restored to the
preferred copy.
Step 9
If the reporting card is a TSC card and you want to make the standby TSC card active again, complete
the
“Soft-Reset a Card Using CTC” procedure on page 2-130
2.6.148 MS-AIS
Default Severity: Not Reported (NR), Non-Service-Affecting (NSA)
Logical Object: STMN
The Multiplex Section (MS) AIS condition indicates that there is a defect in the multiplexing section
layer of the SDH overhead. The multiplex section refers to the segment between two SDH devices in the
circuit and is also known as a maintenance span. The multiplex section layer of the SDH overhead deals
with payload transport, and its functions include multiplexing and synchronization.
Summary of Contents for Cisco ONS 15600 SDH
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