3com S7906E Guía De Referencia

 

1-16 

Use the filter-policy export command to configure BGP to filter all or certain types of routes to be 

advertised.  

Use the undo filter-policy export command to remove the configuration. 

If you specify no routing protocol parameters for the filter-policy export command, all routes to be 

advertised will be filtered. 

By default, BGP does not filter routes to be advertised. 

Only routes that survive the filtering are advertised by BGP. 

# Configure BGP to filter the routes to be advertised by using ACL 2555. 

<Sysname> system-view 

[Sysname] bgp 100 

[Sysname] ipv4-family vpn-instance vpn1 

[Sysname-bgp-vpn1] filter-policy 2555 export 

filter-policy { acl-number | ip-prefix ip-prefix-name } import 

BGP-VPN instance view 

2: System level 

acl-number: IP ACL number, in the range 2000 to 3999. 

ip-prefix-name: IP address prefix list name, a string of 1 to 19 characters. 

Use the filter-policy import command to configure BGP to filter received routes. 

Use the undo filter-policy import command to remove the configuration. 

By default, BGP does not filter received routes. 

Only routes that survive the filtering are added into the BGP routing table. 

# Configure BGP to filter received routes using ACL 2255. 

<Sysname> system-view 

[Sysname] bgp 100 

[Sysname] ipv4-family vpn-instance vpn1 

[Sysname-bgp-vpn1] filter-policy 2255 import