route-distinguisher (VPN instance IPv6 address family view)

Function

The route-distinguisher command configures an RD for a VPN instance IPv6 address family.

The undo route-distinguisher command deletes the RD configuration in a specified VPN instance IPv6 address family.

By default, no RD is configured for a VPN instance IPv6 address family.

Format

route-distinguisher route-distinguisher

undo route-distinguisher route-distinguisher

Parameters

Parameter	Description	Value
route-distinguisher	Specifies an RD.	The three formats of an RD are as follows: 16-bit AS number: 32-bit user-defined number. For example, 101:3. The AS number ranges from 0 to 65535, and the user-defined number ranges from 0 to 4294967295. The AS number and user-defined number cannot be both 0s. This means that an RD cannot be 0:0. Integral 4-byte AS number: 2-byte user-defined number, for example, 0:3 or 65537:3. An AS number ranges from 0 to 4294967295. A user-defined number ranges from 0 to 65535. The AS number and user-defined number cannot be both 0s. This means that an RD cannot be 0:0. 4-byte AS number in dotted notation: 2-byte user-defined number, for example, 0.0:3 or 0.1:0. A 4-byte AS number in dotted notation is in the format of x.y, where x and y are integers that range from 1 to 65535 and from 0 to 65535, respectively. A user-defined number ranges from 0 to 65535. The AS number and user-defined number cannot be both 0s. This means that an RD cannot be 0:0. 32-bit IP address: 16-bit user-defined number. For example, 192.168.122.15:1. The IP address ranges from 0.0.0.0 to 255.255.255.255, and the user-defined number ranges from 0 to 65535.

Parameter

Description

Value

route-distinguisher

Specifies an RD.

The three formats of an RD are as follows:

16-bit AS number: 32-bit user-defined number. For example, 101:3. The AS number ranges from 0 to 65535, and the user-defined number ranges from 0 to 4294967295. The AS number and user-defined number cannot be both 0s. This means that an RD cannot be 0:0.
Integral 4-byte AS number: 2-byte user-defined number, for example, 0:3 or 65537:3. An AS number ranges from 0 to 4294967295. A user-defined number ranges from 0 to 65535. The AS number and user-defined number cannot be both 0s. This means that an RD cannot be 0:0.
4-byte AS number in dotted notation: 2-byte user-defined number, for example, 0.0:3 or 0.1:0. A 4-byte AS number in dotted notation is in the format of x.y, where x and y are integers that range from 1 to 65535 and from 0 to 65535, respectively. A user-defined number ranges from 0 to 65535. The AS number and user-defined number cannot be both 0s. This means that an RD cannot be 0:0.
32-bit IP address: 16-bit user-defined number. For example, 192.168.122.15:1. The IP address ranges from 0.0.0.0 to 255.255.255.255, and the user-defined number ranges from 0 to 65535.

Views

VPN instance IPv6 address family view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
l3vpn	write

Usage Guidelines

Usage Scenario

Different RDs need to be configured for different VPNs to prevent overlapping of routes with the same prefixes in different VPNs. To configure an RD for a VPN instance IPv6 address family, run the route-distinguisher command.

An RD must be configured for a VPN instance before other IPv6 VPN configurations are performed. This means that other VPN configurations can be performed for a VPN instance IPv6 address family only after an RD is configured for it.

Precautions

Configuring a unique RD for a VPN instance IPv6 address family is recommended; otherwise, route overlapping may occur.

After an RD in the IPv6 address family for a VPN instance is deleted using the undo route-distinguisher command, configurations in the IPv6 address family as well as the IPv6 address family-related configurations in the BGP view will be deleted. Therefore, exercise caution when you run this command.

Example

# Configure an RD for a VPN instance IPv6 address family.

<HUAWEI> system-view
[~HUAWEI] ip vpn-instance vpn1
[*HUAWEI-vpn-instance-vpn1] ipv6-family
[*HUAWEI-vpn-instance-vpn1-af-ipv6] route-distinguisher 22:1