pbb i-vsi enable

Function

The pbb i-vsi enable command enables an I-VSI in PBB VPLS.

The undo pbb i-vsi enable command disables an I-VSI in PBB VPLS.

By default, an I-VSI in PBB VPLS is disabled.

Format

pbb i-vsi enable

undo pbb i-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.

In PBB VPLS, VSIs are classified as either I-VSIs or B-VSIs. An I-VSI encapsulates packets into PBB frames and is bound to an AC interface to determine a local CE. An I-VSI must be enabled before being configured. To enable an I-VSI, run the pbb i-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.
The I-VSIs on the local and remote ends can have either the same ID or different IDs. The ID of an I-VSI does not participate in PW negotiation and therefore only needs to be locally unique.

Configuration Impact

The undo pbb i-vsi enable command deletes all PBB VPLS configurations of an I-VSI. Therefore, exercise caution when using this command.

Precautions

Both the pbb i-vsi enable and vsi vsi-name i-vsi commands can enable an I-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.
If a peer address is configured for a VSI by running the peer command in the VSI-LDP view, the VSI cannot be configured as an I-VSI.
An mVSI cannot be configured as an I-VSI.
An I-VSI can be bound to an AC interface but cannot be configured with a peer address.
Currently, PBB VPLS supports only the P2P service type. This means that an I-VSI can be bound only to one AC interface. If m CEs connecting to a local PE need to communicate with m CEs connecting to n peer PEs, m x n I-VSIs must be enabled.

Example

# Enable an I-VSI.

<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 1
[*HUAWEI-vsi-vsi1-ldp] quit
[*HUAWEI-vsi-vsi1] pbb i-vsi enable