peer listen-net (BGP-VPN instance view)

Function

The peer listen-net command specifies a network segment from which a dynamic BGP peer group listens for BGP connection requests.

The undo peer listen-net command deletes the specified network segment from which a dynamic BGP peer group listens for BGP connection requests.

By default, no network segment from which a dynamic BGP peer group listens for BGP connection requests is specified.

Format

peer group-name listen-net ipv4-address [ mask-length | mask ]

undo peer group-name listen-net ipv4-address [ mask-length | mask ]

Parameters

Parameter	Description	Value
group-name	Specifies the name of a dynamic BGP 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.
ipv4-address	Specifies the mask of the preceding IP address.	The value is in dotted decimal notation.
mask-length	Specifies a mask length. The 1s in each 32-bit mask must be consecutive. Therefore, a mask in dotted decimal notation can be presented by a mask length.	The value is an integer ranging from 0 to 32.
mask	Specifies the mask of the preceding IP address.	The value is in dotted decimal notation.

Views

BGP-VPN instance view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
bgp	write

Usage Guidelines

Usage Scenario

To advertise the BGP origin AS validation result (Valid, NotFound, or Invalid) to a specified BGP peer or peer group so that the BGP peer or peer group can apply the result to route selection, run the peer advertise origin-as-validation command.

Prerequisites

A dynamic BGP peer group has been configured using the group listen [ internal | external ] command. In the case of a dynamic EBGP peer group, a peer AS from which the peer group listens for BGP connection requests must also have been specified using the peer listen-as command.

Example

# Specify a network segment from which the dynamic EBGP peer group named ex listens for BGP connection requests.

<HUAWEI> system-view
[~HUAWEI] ip vpn-instance vpn1
[*HUAWEI-vpn-instance-vpn1] ipv4-family
[*HUAWEI-vpn-instance-vpn1-af-ipv4] route-distinguisher 100:1
[*HUAWEI-vpn-instance-vpn1-af-ipv4] quit
[*HUAWEI-vpn-instance-vpn1] quit
[*HUAWEI] bgp 100
[*HUAWEI-bgp] vpn-instance vpn1
[*HUAWEI-bgp-instance-vpn1] group ex listen external
[*HUAWEI-bgp-instance-vpn1] peer ex listen-as 200
[*HUAWEI-bgp-instance-vpn1] peer ex listen-net 10.10.10.0 24