2-24
Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
July 2010
Chapter 2 Alarm Troubleshooting
2.6.14 AUTOSW-AIS-SNCP
Caution
For the ONS 15600 SDH, removing a card that currently carries traffic on one or more ports can cause
a traffic hit. To avoid this, perform an external switch if a switch has not already occurred. See the
“2.8.2 Protection Switching, Lock Initiation, and Clearing” section on page 2-123
traffic-switching procedures.
Note
When you replace a card with the identical type of card, you do not need to make any changes
to the database.
Step 3
If the alarm 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).
2.6.14 AUTOSW-AIS-SNCP
Default Severity: Not Reported (NR), Non-Service-Affecting (NSA)
Logical Object: VCMON-HP
The Automatic SNCP Switch Caused by an AIS condition indicates that automatic SNCP protection
switching occurred because of an
condition. If the SNCP is configured
for revertive switching, it reverts to the working path after the fault clears. The AU-AIS also clears when
the upstream trouble is cleared.
Note
This condition is only reported if the SNCP is set up for revertive switching.
Generally, any AIS is a special SDH signal that communicates to the receiving node when the transmit
node does not send a valid signal. AIS is not considered an error. It is raised by the receiving node on
each input when it detects the AIS instead of a real signal. In most cases when this condition is raised,
an upstream node is raising an alarm to indicate a signal failure; all nodes downstream from it only raise
some type of AIS. This condition clears when you resolve the problem on the upstream node.
Clear the AUTOSW-AIS-SNCP Condition
Step 1
Complete the
“Clear the AU-AIS Condition” procedure on page 2-21
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).
2.6.15 AUTOSW-LOP-SNCP
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
Logical Object: VCMON-HP
Содержание Cisco ONS 15600 SDH
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