ip dcn vpn-instance

Function

The ip dcn vpn-instance command creates a VPN instance and displays the VPN instance view.

The undo ip dcn vpn-instance command deletes a specified VPN instance.

By default, no VPN instance is created.

Format

ip dcn vpn-instance vpn-instance-name

undo ip dcn vpn-instance vpn-instance-name

Parameters

Parameter	Description	Value
vpn-instance-name	Specifies the name of a VPN instance.	The value is a string of 1 to 31 case-sensitive characters, spaces not supported. In addition, the VPN instance name must not be _public_. When double quotation marks are used around the string, spaces are allowed in the string. _public_ refers to a public network VPN instance.

Parameter

Description

Value

vpn-instance-name

Specifies the name of a VPN instance.

The value is a string of 1 to 31 case-sensitive characters, spaces not supported. In addition, the VPN instance name must not be _public_. When double quotation marks are used around the string, spaces are allowed in the string.

_public_ refers to a public network VPN instance.

Views

System view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
l3vpn	write

Usage Guidelines

Usage Scenario

If private network data needs to travel across a public network, you must configure VPN instances on public network PEs. The public network mentioned here is an MPLS backbone network.

VPN instances are required for all L3VPN configurations.

Configuration Impact

After the ip vpn-instance command is run on a PE, a virtual routing table is created on the PE and consumes resources on the PE.

Follow-up Procedure

After creating a VPN instance, perform the following configurations in the VPN instance view:

Enable the IPv4 or IPv6 address family for the VPN instance. A VPN instance supports the IPv4 and IPv6 address families. You need to run the ipv4-family (VPN instance view) or ipv6 family (VPN instance view) command to enable the IPv4 or IPv6 address family based on the type of the protocol stack used to advertise VPN routes in the VPN instance.
Configure a Route Distinguisher (RD) for the IPv4 or IPv6 address family of the VPN instance. You are allowed to perform VPN configurations in the address family view only after using the route-distinguisher command to configure an RD for the address family.
Configure a VPN target for the IPv4 or IPv6 address family of the VPN instance using the vpn-target command. VPN targets control route learning between VPN instances.
Bind the VPN instance to a VPN-connected interface on the PE using the ip binding vpn-instance command.

Precautions

After a VPN instance is deleted using the undo ip vpn-instance command, configurations in the VPN instance as well as the VPN instance-related configurations in the BGP view will be deleted. Therefore, exercise caution when you run this command.

DCN VPN is created by default for the system and cannot be created or deleted manually.

Example

# Create a VPN instance named vrf1.

<HUAWEI> system-view
[~HUAWEI] ip dcn vpn-instance vrf1
[*HUAWEI-vpn-instance-vrf1]