ais enable

Function

The ais enable command enables alarm indication signal (AIS) in an MA.

The undo ais enable command disables AIS in an MA.

By default, AIS is disabled.

Only the S5720-EI, S5720-HI, S5720I-SI, S5720S-SI, S5720-SI, S5735-S, S5735S-S, S5735-S-I, S5730-HI, S5730S-EI, S5730-SI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720-LI, S6720S-EI, S6720S-LI, S6720S-SI, S6720-SI, S6730-H, S6730S-H, S6730-S, and S6730S-S support this command.

Format

ais enable

undo ais enable

Parameters

None

Views

MD view, MA view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

In MD nesting scenarios, if a MEP in a low-level MD detects a fault, the MEP sends a trap to the NMS. After a certain period, a MEP in the MD of a higher level also detects the fault and sends the same trap to the NMS. Enable the AIS function in low-level and high-level MDs to suppress the MEP of the high-level MD from sending traps to the NMS.

Precautions

The ais enable command can be used on only the device running IEEE Standard 802.1ag-2007.

When the device processes many AIS packets, the CPU usage will become high. When the device is enabled with AIS, it is recommended that nestling layers in an MD should be reduced and the number of interfaces associated with VLANs in an MA should be reduced.

Prerequisites

An MD has been created using the cfm md command and an MA has been created using the ma command.

Example

# Create an MD named md1, create an MA named ma1 in the MD, and enable the AIS function in ma1.

<HUAWEI> system-view
[HUAWEI] cfm md md1
[HUAWEI-md-md1] ma ma1
[HUAWEI-md-md1-ma-ma1] ais enable