This command specifies whether the Outbound Route Filtering (ORF) capability for prefix filtering is to be sent to the BGP peer, received from the BGP peer, or both.
ipv4 | ipv6 unicast | Specifies the ORF configuration applies to IPv4 unicast or IPv6 addresses. |
send | Specifies that the ORF capability for prefix filtering is sent to the BGP peer. |
receive | Specifies that the ORF capability for prefix filtering is received from the BGP peer. |
both | Specifies that the ORF capability for prefix filtering is both sent to and received from the BGP peer. |
None.
BGP Router Configuration.
This command is used to reduce the number of BGP prefix filtering advertisements the BGP speaker sends or receives from a peer router.
Most configurations will configure BGP to advertise both send and receive ORF prefix filtering capabilities. This feature can be configured in a single direction between two routers with one router configured to send and the other router configured to receive the ORF prefix filtering capability.
The bgp orf prefix-filter commands specifies whether the ORF capability for prefix filtering will be sent to a BGP peer, received from a BGP peer, or both.
The no bgp orf prefixfilter command removes the configured ORF capability.
This example specifies BGP to send the ORF capability for prefix filtering to the BGP peer for IPv4 unicast:
System(su-config)->router bgp 65151 System(su-config-bgp)->bgp router-id 151.1.1.9 System(su-config-bgp)->bgp orf ipv4 unicast prefix-filter send System(su-config-bgp)->