cfm trigger clear-arp

Function

The cfm trigger clear-arp command clears Address Resolution Protocol (ARP) entries for an interface.

The undo cfm trigger clear-arp command restores the default configuration.

By default, ARP entries are not cleared for an interface.

Format

cfm md md-name ma ma-name trigger clear-arp [ vlan vlan-id ]

undo cfm md md-name ma ma-name trigger clear-arp

Parameters

Parameter	Description	Value
ma ma-name	Specifies the name of an MA.	The value is a string of 1 to 43 characters. Question marks (?), hyphens (-) are not supported. The total length of the MA and MD names must be no greater than 44 characters.
vlan vlan-id	Specifies a VLAN ID.	The value is an integer ranging from 1 to 4094.
md md-name	Specifies the name of a maintenance domain (MD) in a maintenance association (MA).	The value is a string of 1 to 43 characters. Question marks (?), hyphens (-) are not supported.

Parameter

Description

Value

ma ma-name

Specifies the name of an MA.

The value is a string of 1 to 43 characters. Question marks (?), hyphens (-) are not supported. The total length of the MA and MD names must be no greater than 44 characters.

vlan vlan-id

Specifies a VLAN ID.

The value is an integer ranging from 1 to 4094.

md md-name

Specifies the name of a maintenance domain (MD) in a maintenance association (MA).

The value is a string of 1 to 43 characters. Question marks (?), hyphens (-) are not supported.

Views

Layer 2 100GE interface view, 100ge sub-interface view, 100GE interface view, Layer 2 10GE interface view, 10GE sub-interface view, 10GE interface view, 200GE sub-interface view, 25GE-L2 view, 25GE sub-interface view, 25GE interface view, 400GE Layer 2 sub-interface view, 400GE-L2 view, 400GE sub-interface view, 400GE interface view, Layer 2 40GE interface view, 40GE sub-interface view, 40GE interface view, 50GE Layer 2 sub-interface view, Layer 2 50GE interface view, 50GE sub-interface view, 50GE interface view, Eth-Trunk Layer 2 sub-interface view, Eth-Trunk sub-interface view, Eth-Trunk interface view, FlexE sub-interface view, FlexE interface view, GE Layer 2 sub-interface view, Layer 2 GE interface view, GE optical interface view, GE sub-interface view, GE electrical interface view, Layer 2 sub-interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
y1731	write

Usage Guidelines

Usage Scenario

When the Ethernet connectivity fault management (CFM) module detects a fault, it notifies the operation, administration and maintenance (OAM) management module of the fault. The OAM management module searches the CFM fault relationship table based on the interface and ID and then clears ARP entries for the interface.

Example

# Clear ARP entries for GE 0/1/1.

<HUAWEI> system-view
[~HUAWEI] vlan 1
[*HUAWEI-vlan1] quit
[*HUAWEI] interface GigabitEthernet0/1/1
[*HUAWEI-GigabitEthernet0/1/1] portswitch
[*HUAWEI-GigabitEthernet0/1/1] port trunk allow-pass vlan 1
[*HUAWEI-GigabitEthernet0/1/1] quit
[*HUAWEI] cfm enable
[*HUAWEI] cfm md md1
[*HUAWEI-md-md1] ma ma1
[*HUAWEI-md-md1-ma-ma1] map vlan 1
[*HUAWEI-md-md1-ma-ma1] mep mep-id 1 interface GigabitEthernet0/1/1 outward
[*HUAWEI-md-md1-ma-ma1] quit
[*HUAWEI-md-md1] quit
[*HUAWEI] interface GigabitEthernet0/1/1
[*HUAWEI-GigabitEthernet0/1/1] cfm md md1 ma ma1 trigger clear-arp