admin-vsi

Function

The admin-vsi command configures the current service Virtual Switching Instance (VSI) as an mVSI.

The undo admin-vsi command configures the current mVSI as a service VSI.

By default, no mVSI is configured.

Format

admin-vsi

undo admin-vsi

Parameters

None

Views

VSI-AUTO view, VSI-DEFAULT view, VSI-STATIC view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
l2vpn	write

Usage Guidelines

Usage Scenario

In a virtual private LAN service (VPLS) accessing L3VPN scenario, the VRRP instance is adopted to determine whether an aggregation site gateway (ASG) is the master or backup and control the master/backup switchover. The mVSI created on the ASG is dedicated to transmitting master/backup detection packets between ASGs.

Precautions

You cannot run the shutdown command on the mVSI.

Compared with the service VSI, the mVSI becomes Up on different conditions as follows:

mVSI: requires an Up PW or an Up AC in the VSI.
Service VSI: requires two or more Up AC interfaces, or an Up AC interface and an Up PW.
When the mVSI receives a gratuitous ARP packet, it checks whether the link over which the packet is transmitted changes. If the link over which the packet is transmitted changes, the mVSI clears all the MAC addresses of service VSIs associated with the mVSI. If the link over which the packet is transmitted remains unchanged, the mVSI does not clear the MAC addresses of service VSIs associated with the mVSI.

Example

# Configure V100 as an mVSI.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] quit
[*HUAWEI] mpls l2vpn
[*HUAWEI-l2vpn] quit
[*HUAWEI] vsi v100 static
[*HUAWEI-vsi-v100] pwsignal ldp
[*HUAWEI-vsi-v100-ldp] vsi-id 100
[*HUAWEI-vsi-v100-ldp] quit
[*HUAWEI-vsi-v100] admin-vsi