peer route-policy export (BGP-Flow VPN instance IPv4 address family view)

Function

The peer route-policy export command specifies a route-policy for filtering routes to be advertised to a peer.

The undo peer route-policy export command deletes a specified route-policy.

By default, no route-policy is configured for the routes to be advertised to a specified BGP peer.

Format

peer ipv4-address route-policy route-policy-name export

undo peer ipv4-address route-policy route-policy-name export

Parameters

Parameter	Description	Value
ipv4-address	Specifies the IPv4 address of a peer.	It is in dotted decimal notation.
route-policy-name	Specifies the name of a route-policy.	The name is a string of 1 to 200 case-sensitive characters, with spaces not supported. When double quotation marks are used around the string, spaces are allowed in the string.

Parameter

Description

Value

ipv4-address

Specifies the IPv4 address of a peer.

It is in dotted decimal notation.

route-policy-name

Specifies the name of a route-policy.

The name is a string of 1 to 200 case-sensitive characters, with spaces not supported. When double quotation marks are used around the string, spaces are allowed in the string.

Views

BGP-Flow VPN instance IPv4 address family view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
bgp	write

Usage Guidelines

Usage Scenario

After a route-policy is created, the peer route-policy export command is used to apply a Route-Policy to a peer so that the routes advertised to the peer can be controlled. To be specific, only the necessary routes are advertised to the peer. In this manner, route management is implemented, the scale of the routing table is reduced, and fewer network resources are consumed.

Prerequisites

If the command specifies a route-policy that does not exist, use the route-policy command to create the route-policy.

Configuration Impact

If the peer route-policy command is run for a peer group, all the members of the peer group inherit the configuration.

The peer route-policy command is mutually exclusive with the peer route-filter commands.

Binding a route-policy after a BGP peer relationship is established may cause peer flapping.

Example

# Apply a routing policy to the routes to be advertised to a peer.

<HUAWEI> system-view
[~HUAWEI] ip vpn-instance vpna
[*HUAWEI-vpn-instance-vpna] ipv4-family
[*HUAWEI-vpn-instance-vpn1-af-ipv4] route-distinguisher 100:1
[*HUAWEI-vpn-instance-vpna-af-ipv4] quit
[*HUAWEI-vpn-instance-vpna] quit
[*HUAWEI] route-policy test-policy permit node 10
[*HUAWEI-route-policy] quit
[*HUAWEI] bgp 100
[*HUAWEI-bgp] vpn-instance vpna
[*HUAWEI-bgp-instance-vpna] peer 1.1.1.1 as-number 100
[*HUAWEI-bgp-instance-vpna] quit
[*HUAWEI-bgp] ipv4-flow vpn-instance vpna
[*HUAWEI-bgp-flow-vpna] peer 1.1.1.1 enable
[*HUAWEI-bgp-flow-vpna] peer 1.1.1.1 route-policy test-policy export