apply extcommunity redirect vpn-target

Function

The apply extcommunity redirect vpn-target command applies a redirection VPN-Target extended community attribute to routes matching specified filtering rules.

The undo apply extcommunity redirect vpn-target command restores the default configuration.

By default, no redirection VPN-Target extended community attribute is applied to routes matching specified filtering rules.

Format

apply extcommunity redirect vpn-target extCmntyValue

undo apply extcommunity redirect vpn-target

Parameters

Parameter	Description	Value
extCmntyValue	Indicates the value of VPN-Target extended community.	The value of VPN-Target extended community can be expressed in any of the following formats: 2-byte AS number:4-byte user-defined number, for example, 1:3. The AS number ranges from 0 to 65535, and the user-defined number ranges from 0 to 4294967295. IPv4-address:2-byte 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. Integral 4-byte AS number:2-byte user-defined number, for example, 0:3 or 65537:3. An AS number ranges from 65536 to 4294967295. A user-defined number ranges from 0 to 65535. 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 ranging from 1 to 65535 and from 0 to 65535, respectively. A user-defined number ranges from 0 to 65535.
vpn-target	Indicates the VPN-Target extended community.	-

Parameter

Description

Value

extCmntyValue

Indicates the value of VPN-Target extended community.

The value of VPN-Target extended community can be expressed in any of the following formats:

2-byte AS number:4-byte user-defined number, for example, 1:3. The AS number ranges from 0 to 65535, and the user-defined number ranges from 0 to 4294967295.
IPv4-address:2-byte 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.
Integral 4-byte AS number:2-byte user-defined number, for example, 0:3 or 65537:3. An AS number ranges from 65536 to 4294967295. A user-defined number ranges from 0 to 65535.
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 ranging from 1 to 65535 and from 0 to 65535, respectively. A user-defined number ranges from 0 to 65535.

vpn-target

Indicates the VPN-Target extended community.

Views

Route-policy view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
route-base	write

Usage Guidelines

Usage Scenario

To apply a redirection extended community attribute to BGP FlowSpec routes matching specified filtering rules, run the apply extcommunity redirect command. To enable BGP FlowSpec routes to redirect traffic to a VPN instance with RT as-number:nn, specify the vpn-target as-number:nn number to add a VPN target extended community attribute to these routes. Upon receipt of the traffic, the VPN instance will forward the traffic based on its own forwarding table.

Prerequisites

A route-policy has been configured.

Configuration Impact

If a route matches the filtering rules of a specified route-policy, the redirection extended community attribute will be applied to the route.

Example

# Apply the redirection extended community attribute 100:1 to routes matching specified filtering rules.

<HUAWEI> system-view
[~HUAWEI] route-policy aaa permit node 10
[*HUAWEI-route-policy] apply extcommunity redirect vpn-target 100:1