alarm threshold

Function

The alarm threshold command configures an alarm threshold for an eMDI instance.

The undo alarm threshold command restores the default alarm threshold for an eMDI instance.

By default, the alarm threshold for an eMDI instance is 100.

Format

alarm { rtp-lr | rtp-ser | dplr | uplr } threshold threshold-value

undo alarm { rtp-lr | rtp-ser | dplr | uplr } threshold [ threshold-value ]

Parameters

Parameter	Description	Value
rtp-lr	Specifies the alarm threshold of the packet loss rate for RTP packets (transported over UDP).	-
rtp-ser	Specifies the alarm threshold of the out-of-order rate for RTP packets (transported over UDP).	-
dplr	Specifies the alarm threshold of the downstream TCP packet loss rate.	-
uplr	Specifies the alarm threshold of the upstream TCP packet loss rate.	-
threshold threshold-value	Specifies the alarm threshold value.	The value is an integer in the range from 1 to 100000 (unit: 1/100,000).

Views

eMDI instance view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

When eMDI is used to monitor quality and demarcate faults of video or audio services, you can run this command to configure the alarm threshold for an eMDI instance. When an indicator such as the out-of-order packet rate or packet loss rate monitored by the eMDI instance reaches the threshold for three consecutive times, an alarm is reported to the NMS. If the indicator no longer reaches the threshold within the following 60 consecutive monitoring intervals, the alarm is automatically cleared.

The switch supports alarms about the packet loss rate, out-of-order rate, and multi-flow detection for RTP packets (transported over UDP), as well as the downstream and upstream TCP packet loss rates. If the out-of-order rate of RTP packets transported over UDP is higher than the packet loss rate, the eMDI instance determines that multiple flows exist.

Prerequisites

A target flow has been configured in the eMDI instance using the flow ipv4 udp command or flow ipv4 tcp command.

Precautions

After an eMDI instance is started using the start command, the alarm threshold for the eMDI instance cannot be modified. To modify the alarm threshold, run the stop command to stop the eMDI instance first.

Example

# Set the alarm threshold of the downstream packet loss rate to 1000 in eMDI instance 1.

<HUAWEI> system-view
[HUAWEI] emdi
[HUAWEI-emdi] emdi instance 1
[HUAWEI-emdi-instance-1] flow ipv4 tcp source 10.0.0.1 destination 10.2.2.2
[HUAWEI-emdi-instance-1] alarm dplr threshold 1000