vxlan vni (VPN instance view)

Function

The vxlan vni command configures the VXLAN VNI corresponding to a VPN instance.

The undo vxlan vni command restores the default settings.

By default, no VNI is configured for a VPN instance.

Format

vxlan vni vni-id

undo vxlan vni vni-id

Parameters

Parameter	Description	Value
vni-id	Specifies a VNI ID.	The value is an integer that ranges from 1 to 16777215.

Views

VPN instance view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

To isolate tenants at Layer 3, VPN is generally used. In a distributed VXLAN gateway scenario, to implement Layer 3 communication through a Layer 3 gateway, the Layer 3 gateway must be bound to a VPN instance.

The Layer 3 gateway assigns a VNI to each subnet and a Layer 3 VNI to each tenant identified by a VPN instance. To bind a VNI to a VPN instance, run the vxlan vni command. During Layer 3 communication through the Layer 3 gateway, the VNI ID bound to the VPN instance is transmitted to the remote Layer 3 gateway through the VXLAN tunnel. The remote Layer 3 gateway identifies VPNs based on tenants' VNI IDs to determine whether tenants belong to the same VPN for communication or isolation purposes.

Precautions

A VNI can be bound only to one VPN instance.
The VNI bound to a VPN instance cannot be bound to a BD.

Example

# Configure the ID of the VNI corresponding to VPN instance vpn1 as 10.

<HUAWEI> system-view
[HUAWEI] ip vpn-instance vpn1
[HUAWEI-vpn-instance-vpn1] vxlan vni 10