Cisco 15310-MA Průvodce řešením problémů stáhnout pdf (Strana 151)

2-21

Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, Release 9.0

78-18394-01

Chapter 2 Alarm Troubleshooting

Alarm Procedures

Generally, an AIS is a special SONET 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 the node sees 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 AIS Condition

Step 1 Determine whether there are alarms on the upstream nodes and equipment, especially the “LOS (OCN)”

alarm on page 2-106, or if there are out-of-service (OOS,MT or OOS,DSBLD) ports.

Step 2 Clear the upstream alarms using the applicable procedures in this chapter.

Step 3 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).

2.7.2 AIS-L

Default Severity: Not Reported (NR), Non-Service-Affecting (NSA)

Logical Objects: EC1, OCN

The AIS Line condition indicates that this node is detecting line-level AIS in the incoming signal. This

alarm is secondary to another alarm occurring simultaneously in an upstream node.

This condition can also be raised in conjunction with the “TIM-S” alarm on page 2-148 if AIS-L is

enabled.

Clear the AIS-L Condition

Step 1 Complete the “Clear the 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).

2.7.3 AIS-P

Default Severity: Not Reported (NR), Non-Service-Affecting (NSA)

Logical Objects: STSMON, STSTRM

The AIS Path condition means that this node is detecting AIS in the incoming path. This alarm is

secondary to another alarm occurring simultaneously in an upstream node.

Clear the AIS-P Condition

Step 1 Complete the “Clear the AIS Condition” procedure on page 2-21.

1 2 ... 146 147 148 149 150 151 152 153 154 155 156 ... 379 380

Žádné komentáře

Cisco 15310-MA Průvodce řešením problémů Strana 151