pbb b-vsi enable

Function

The pbb b-vsi enable command enables a B-VSI in PBB VPLS.

The undo pbb b-vsi enable command disables a B-VSI in PBB VPLS.

By default, no B-VSI is enabled in PBB VPLS.

Format

pbb b-vsi enable

undo pbb b-vsi enable

Parameters

None

Views

VSI--PBBENABLE view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
l2vpn	write

Usage Guidelines

Usage Scenario

PBB VPLS divides an HVPLS network into an access VPLS domain and a backbone VPLS domain by deploying I-VSIs and B-VSIs on access-, aggregation-, and core-layer devices. In the access VPLS domain, I-VSIs provide VPLS services; in the backbone VPLS domain, B-VSIs provide VPLS services.

VSIs in PBB VPLS consist of I-VSIs and B-VSIs. A B-VSI processes B-MAC addresses and uses the configured peer address to determine a PW's remote PE. A B-VSI must be enabled before being configured. To enable a B-VSI, run the pbb b-vsi enable command.

Prerequisites

PBB VPLS uses LDP as the signaling protocol. A signaling protocol and a VSI ID have been configured using the pwsignal ldp and vsi-id commands, respectively.

The IDs of an I-VSI and a B-VSI on the local end must be different.

Configuration Impact

The undo pbb b-vsi enable command deletes all PBB VPLS configurations of a B-VSI and unbinds I-VSIs from the B-VSI. Therefore, exercise caution when using this command.

Precautions

The pbb b-vsi enable and vsi vsi-name b-vsi commands can both enable a B-VSI. You can use either one.
Enable I-VSIs and B-VSIs before configuring them. The I-VSIs and B-VSIs can be configured in a random order.
A VSI bound to an AC interface cannot be configured as a B-VSI.
An mVSI cannot be configured as a B-VSI.
A B-VSI can be configured with a peer address, but cannot be bound to any AC interface.

Example

# Enable a B-VSI.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] quit
[*HUAWEI] mpls l2vpn
[*HUAWEI-l2vpn] quit
[*HUAWEI] vsi vsi2
[*HUAWEI-vsi-vsi2] pwsignal ldp
[*HUAWEI-vsi-vsi2-ldp] vsi-id 2
[*HUAWEI-vsi-vsi2-ldp] quit
[*HUAWEI-vsi-vsi2] pbb b-vsi enable