peer preference

Format

peer peer-address [ negotiation-vc-id vc-id ] preference preference-value

undo peer peer-address [ negotiation-vc-id vc-id ]

Parameters

Parameter	Description	Value
peer-address	Specifies the IPv4 address of the VSI peer. Generally, the loopback address of the peer is used.	The value is in dotted decimal notation.
negotiation-vc-id vc-id	Specifies the parameter negotiated with the peer. By default, the VSI ID is used. Generally, this parameter is used in VPLS accessing VLL scenarios in which the VSI IDs of the two ends are inconsistent but the two ends are required to communicate.	Specifies the ID of a VC. The VC ID is usually used when both ends need to communicate but the VSI IDs on both ends are different. The value of the parameter vc-id must be different from the VSI ID configured for another local VSI and other VSI IDs specified locally by the negotiate-vc-id command. In other words, the specified VC ID must be an unused one. If negotiate-vc-id is configured on the local end, the negotiate-vc-id or vsi-id configured on the peer must be consistent with negotiate-vc-id configured on the local end.
preference-value	Specifies the priority of a peer specified when the peer is added to a PW protection group. The smaller the value, the higher the priority. Between the two peers added to a PW protection group, the one with the higher priority serves as the primary PW.	The value is an integer ranging from 1 to 32.

Parameter

Description

Value

peer-address

Specifies the IPv4 address of the VSI peer. Generally, the loopback address of the peer is used.

The value is in dotted decimal notation.

negotiation-vc-id vc-id

Specifies the parameter negotiated with the peer. By default, the VSI ID is used. Generally, this parameter is used in VPLS accessing VLL scenarios in which the VSI IDs of the two ends are inconsistent but the two ends are required to communicate.

Specifies the ID of a VC. The VC ID is usually used when both ends need to communicate but the VSI IDs on both ends are different. The value of the parameter vc-id must be different from the VSI ID configured for another local VSI and other VSI IDs specified locally by the negotiate-vc-id command. In other words, the specified VC ID must be an unused one. If negotiate-vc-id is configured on the local end, the negotiate-vc-id or vsi-id configured on the peer must be consistent with negotiate-vc-id configured on the local end.

preference-value

Specifies the priority of a peer specified when the peer is added to a PW protection group. The smaller the value, the higher the priority. Between the two peers added to a PW protection group, the one with the higher priority serves as the primary PW.

The value is an integer ranging from 1 to 32.

Views

Protection group view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
l2vpn	write

Usage Guidelines

Usage Scenario

After creating a PW protection group and specifying the PW redundancy mode, you can add specified PWs to the group for them to work in backup mode.

Prerequisites

A PW protection group has been created, and the protection mode has been specified.

Configuration Impact

If you add the PW with a lower priority to the PW protection group first, a PW switching will occur after you add the other PW to the PW protection group.

Precautions

Add PWs to a PW protection group in descending order of PW priorities. Do not add the PW with a lower priority to the PW protection group first.

Example

# Add a specified PW to a PW protection group and set the priority of the PW to 1.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] quit
[*HUAWEI] mpls l2vpn
[*HUAWEI-l2vpn] quit
[*HUAWEI] vsi vsi1
[*HUAWEI-vsi-vsi1] pwsignal ldp
[*HUAWEI-vsi-vsi1-ldp] vsi-id 100
[*HUAWEI-vsi-vsi1-ldp] peer 2.2.2.2
[*HUAWEI-vsi-vsi1-ldp] protect-group group1
[*HUAWEI-vsi-vsi1-ldp-protect-group-group1] protect-mode pw-redundancy master
[*HUAWEI-vsi-vsi1-ldp-protect-group-group1] peer 2.2.2.2 preference 1