vxlan vni

Function

The vxlan vni command creates a VXLAN network identifier (VNI) and binds it to a BD.

The undo vxlan vni command unbinds a VNI from a BD.

By default, no VNI is created.

Format

vxlan vni vni-id [ split-horizon-mode ]

undo vxlan vni vni-id [ split-horizon-mode ]

Parameters

Parameter	Description	Value
vni-id	Specifies a VNI ID.	The value is an integer ranging from 1 to 16777215.
split-horizon-mode	Specifies split horizon for packet forwarding.	-

Parameter

Description

Value

vni-id

Specifies a VNI ID.

The value is an integer ranging from 1 to 16777215.

split-horizon-mode

Specifies split horizon for packet forwarding.

Views

Bridge domain view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
nvo3	write

Usage Guidelines

Usage Scenario

A virtual network (VN) on a VXLAN is a virtual broadcast domain. To allow a BD to function as a VXLAN network entity to transmit VXLAN traffic, run the vxlan vni command to map a VNI to a BD.

When a VXLAN network and a VPLS network intersect, to allow internetworking, run the vxlan vni split-horizon-mode command on the edge devices at the intersection of the two networks to create a VNI and bind it to a BD, and configure split horizon for packet forwarding.

Precautions

Restrictions for connection between the VXLAN and EVPN MPLS are as follows:

In a BD, the BD can be bound to the VNI and BD EVPN at the same time.
Each VNI can be added to only one BD, and each BD can be associated with only one VNI.
Only 1:1 non BD Tag mode is supported to access the EVPN.
EVC sub-interfaces are not supported to access the VXLAN or EVPN.
VXLAN tunnels and EVPNs do not support dynamic MAC address learning. They advertise and receive MAC address routes through BGP.
Tunnel-side broadcast, multicast, and unknown unicast are supported for VXLANs. The device replicates packets based on VNI+peer statistics.

Example

# Bind VNI 5000 to BD 10 and configure split horizon for packet forwarding.

<HUAWEI> system-view
[~HUAWEI] bridge-domain 10
[*HUAWEI-bd10] vxlan vni 5000 split-horizon-mode