Method used to cancel alarm masking on the NMS


On the U2000, choose Fault > Settings > Mask Rule from the main menu. On the Mask Rule tab, select the desired masking policy, and deselect the Enable check box or delete the policy.

Other related questions:
Method used to cancel automatic configuration of AR1200 series routers
Analysis: When ARG3 series products log in to the console interface for the first time or the configuration file is not enabled, the massage “Warning: Auto-Config is working. Do you want to stop Auto-Config? [y/n]:”is displayed. Auto-Config is working. Do you want to stop Auto-Config? When n is selected, Auto-Config function cannot be automatically restored and you need to manually stop the Auto-Config process.Recommended solution: View the configuration and operation status of Auto-Config.When the automatic configuration is running, you need to run the undo autoconfig enable command to disable automatic configuration in the system view.

Method used to configure the mask in the ACL on the AR
Masks in ACL rules configured on the AR series routers and S series switches are wildcard masks. The wildcard mask is also called wildcard and is in dotted decimal notation. When the wildcard is converted to a binary value, the value 0 indicates that the bit is matched and the value 1 indicates that the bit is not matched. The value 0 or l of a binary value can be incontiguous. For example, the IP address is and the wildcard is, representing that the network address is 192.168.1.x0x0xx01. The value of x can be 0 or 1.
Example:  system-view
[Huawei] acl number 2000
[Huawei-acl-basic-2000] rule permit source 0 //Permit only a specific IP address, with the wildcard mask of that is abbreviated as 0.
[Huawei-acl-basic-2000] rule permit source //Permit a network segment (mask, with the wildcard mask of The wildcard mask is used in an ACL.

Method used to connect NMS computers
You can connect them directly or over a LAN.

Alarm masking
Alarm masking means that the NMS does not receive alarms from a specified object or monitor some unimportant NMS alarms. During maintenance, testing, or deployment, you can set alarm masking conditions to mask alarms that do not need concern. For some unimportant NMS alarms, you can set alarm masking on the NMS so that the NMS does not monitor these alarms to improve fault locating efficiency.

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