Method used to clear alarms caused by unused ports

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Question:
In a DWDM system, when a client-side port is not in use but is set to the used state, alarms are reported on the NMS, such as ODU_AIS, SM_BDI, and MS_AIS alarms. These alarms may cause misunderstandings that services are interrupted.
Analysis:
In the main view, double-click the optical NE to display the status view. Specifically,
a. Right-click the NE in the subrack and choose NE Explorer from the short-cut menu. The NE Explorer is displayed.
b. Select the OTU board from the navigation tree. Choose Configuration > WDM Interface > Advanced Attributes.
c. Set the channel use stats to unused.d. Click Apply.
e. View alarms and check whether the alarm is cleared.
Root cause:
An alarm is generated when the NMS detects that an unused client-side or WDM-side port is set to the used state.
Answer:
Check the client-side optical port status of an OTU board to facilitate alarm analysis and troubleshooting. This operation must be performed with a prior approval and monitoring of the customer.
Suggestion and conclusion:
None

Other related questions:
Method used to clear alarms caused by unused ports
Question: In a DWDM system, when a client-side port is not in use but is set to the used state, alarms are reported on the NMS, such as ODU_AIS, SM_BDI, and MS_AIS alarms. These alarms may cause misunderstandings that services are interrupted. Analysis: In the main view, double-click the optical NE to display the status view. Specifically, a. Right-click the NE in the subrack and choose NE Explorer from the short-cut menu. The NE Explorer is displayed. b. Select the OTU board from the navigation tree. Choose Configuration > WDM Interface > Advanced Attributes. c. Set the channel use stats to unused.d. Click Apply. e. View alarms and check whether the alarm is cleared. Root cause: An alarm is generated when the NMS detects that an unused client-side or WDM-side port is set to the used state. Answer: Check the client-side optical port status of an OTU board to facilitate alarm analysis and troubleshooting. This operation must be performed with a prior approval and monitoring of the customer. Suggestion and conclusion: None

Clearing of alarms caused by unused WDM ports
1. In the main view, double-click the icon for the optical NE to open the state diagram of the optical NE. 2. Right-click the subrack NE and choose NE Explorer from the shortcut menu. The NE Explorer dialog box is displayed. 3. In the navigation tree on the left, select the OTU board and choose Configuration > WDM Interface. 4. On the Basic Attributes tab, set Channel Use Status to Unused. 5. Click Apply. 6. Check for the alarm to determine whether the alarm is cleared.

Method used to handle the PS alarm reported by an unused protection group of a DCP board
Question: The first protection group on a DCP board of a WDM network is used. The second protection group is not used, but the PS switching alarm is reported. What are the methods of monitoring the impact and handling the issue? Once the alarm is masked, the PS alarm of the first protection group is masked. Analysis: 1. BWS 1600G NEs support DCP boards of various versions. The PS alarms of the DCP boards are reported when the optical switches are in the standby state. Because the alarm distinguishes the protection groups according to alarm parameters, PS alarms of the entire board will be not monitored if the alarms are masked. Therefore, the alarms cannot be handled by masking them. 2. Based on the DCP board alarm mechanism, you can clear the PS alarm by setting the second optical switch to active. 3. Because there is no command for directly changing the optical switch status, use the second protection group that is logically configured and lock out the optical switch to the active state. Then the issue is rectified. Answer: 1. Configure two logical OTU boards on the NMS, and configure the second protection group to a wavelength protection group. 2. Issue a lockout command to this new protection group on the NMS. The alarm is cleared. 3. Delete the new logical protection group and OTU board.

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