3com 8807 Reference Guide

acl-number: AS regular expression ACL number, ranging 1 to 199.

import: Filters the received routes with AS path list.

Use the peer as-path-acl import command to configure peers from filter 
received routing information with routing filtering policy based on AS path list.

Use the undo peer as-path-acl import command to cancel the configuration.

By default, there is no filtering policy based on AS path list.

The incoming filtering policy applied to peers takes precedence over the 
configuration to peer groups.

# Configure the test peer group to filter the received routes with AS path ACL 3.

[3Com-bgp] ipv4-family vpnv4

 

[3Com-bgp-af-vpn] peer test as-path-acl 3 import 

peer { group-name | ip-address } connect-interface { interface-type 
interface_num }

undo peer { group-name | ip-address } connect-interface

VPN-instance sub-address family view

group-name: Name of a neighbor peer group, consisting of 1 to 47 alphanumeric 
characters.

ip-address: Peer IP address.

interface-type interface-number: Interface type and interface number.

Use the peer connect-interface command to configure to allow the internal BGP 
session to use any operable interface for a TCP connection.

Use the undo peer connect-interface command to restore the optimum local 
address for a TCP connection.

By default, BGP uses the optimum local address to implement a TCP connection.

Generally, BGP uses the optimum local address to implement a TCP connection. In 
order to make the TCP connection valid even when the interface fails, you can 
configure to allow the internal BGP session to use any operable interface for the 
TCP connection. Usually, loopback interface is used.