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

Function

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

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 group.

Format

peer group-name route-policy route-policy-name export

undo peer group-name route-policy route-policy-name export

Parameters

Parameter	Description	Value
group-name	Specifies the name of a peer group.	The name is a string of 1 to 47 case-sensitive characters, with spaces not supported. When double quotation marks are used around the string, spaces are allowed in the string.
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.
export	Applies a route-policy to routes to be advertised to a peer group.	-

Parameter

Description

Value

group-name

Specifies the name of a peer group.

The name is a string of 1 to 47 case-sensitive characters, with spaces not supported. When double quotation marks are used around the string, spaces are allowed in the string.

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.

export

Applies a route-policy to routes to be advertised to a peer group.

Views

BGP-labeled VPN instance IPv4 address family view, BGP-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 group so that the routes advertised to a peer group can be controlled. To be specific, only the necessary routes are advertised to the peer group. 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 route-policy to routes to be advertised to a peer.

<HUAWEI> system-view
[~HUAWEI] ip vpn-instance vpna
[*HUAWEI-vpn-instance-vpna] ipv4-family
[*HUAWEI-vpn-instance-vpna-af-ipv4] route-distinguisher 100:1
[*HUAWEI-vpn-instance-vpna-af-ipv4] quit
[*HUAWEI-vpn-instance-vpna] quit
[*HUAWEI] bgp 100
[*HUAWEI-bgp] ipv4-family vpn-instance vpna
[*HUAWEI-bgp-vpna] group test
[*HUAWEI-bgp-vpna] peer test route-policy test-policy export
<HUAWEI> system-view
[~HUAWEI] ip vpn-instance vpna
[*HUAWEI-vpn-instance-vpna] ipv4-family
[*HUAWEI-vpn-instance-vpna-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] group test
[*HUAWEI-bgp-instance-vpna] quit
[*HUAWEI-bgp] ipv4-labeled-unicast vpn-instance vpna
[*HUAWEI-bgp-labeled-vpna] peer test enable
[*HUAWEI-bgp-labeled-vpna] peer test route-policy test-policy export