efm error-frame-period notification enable

Function

The efm error-frame-period notification enable command enables EFM OAM to detect and notify its peer device of errored frames on an interface.

The undo efm error-frame-period notification enable command disables EFM OAM from detecting and notifying its peer device of errored frames on an interface.

By default, an interface is disabled from detecting and notifying its peer device of errored frames that EFM periodically detects.

Format

efm error-frame-period notification enable

undo efm error-frame-period notification enable

Parameters

None

Views

Layer 2 100GE interface view, 100GE interface view, Layer 2 10GE interface view, 10GE interface view, 25GE-L2 view, 25GE interface view, 400GE-L2 view, 400GE interface view, Layer 2 40GE interface view, 40GE interface view, Layer 2 50GE interface view, 50GE interface view, FlexE interface view, Layer 2 GE interface view, GE optical interface view, GE interface view, GE electrical interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
efm	write

Usage Guidelines

Usage Scenario

Fault detection on an Ethernet network is difficult when the physical connection on the network is not closed but network performance deteriorates gradually. Link monitoring is used to detect link layer faults in various environments. After EFM OAM link monitoring is configured, statistics about the physical layer data of the interface management module are queried to monitor the quality of the link connected to the current interface. EFM OAM link monitoring implements the following functions:

Reports an alarm when the number of bit errors detected during a specified detection interval exceeds the specified threshold.
Reports an alarm when the number of errored frames detected during a specified detection interval exceeds the specified threshold.
Reports an alarm when the number of errored frame seconds detected during a specified interval exceeds the specified threshold.
Reports an alarm when the number of errored frames among a specified number of received frames exceeds the specified threshold.
To enable an interface to notify its peer device of errored frames that EFM periodically detects, run the efm error-frame-period notification enable command. The local device considers a link faulty if the number of errored frames among a specified number of frames received by an interface reaches a threshold. Then the local device generates an alarm, reports the alarm to the NMS, and sends an OAM PDU to notify the peer device of the link failure.

Prerequisites

EFM has been enabled on an interface using the efm enable command in the interface view.

Example

# Enable GE 0/1/0 to detect and notify its peer device of errored frames that EFM periodically detects.

<HUAWEI> system-view
[~HUAWEI] efm enable
[*HUAWEI] interface GigabitEthernet0/1/0
[*HUAWEI-GigabitEthernet0/1/0] efm enable
[*HUAWEI-GigabitEthernet0/1/0] efm error-frame-period notification enable