Configure BGP4 Outbound Route Filtering

Access global configuration mode.
```
device# configure terminal
```
Access BGP configuration mode.
```
device(config)# router bgp
```

Access IPv4 address family configuration mode.

device(config-bgp-router)# address-family ipv4 unicast

(For send mode only) Filter the incoming route updates from a specified BGP neighbor.
```
device(config-bgp-ipv4u)# neighbor 10.1.2.3 prefix-list myprefixlist in
```
This example specifies the neighbor prefix-list command, the IPv4 address of the neighbor, a prefix list named myprefixlist, and the keyword in.
To advertise ORF send capabilities, run the neighbor capability orf prefixlist command with the send keyword.
```
device(config-bgp-ipv4u)# neighbor 10.1.2.3 capability orf prefixlist send
```
To advertise ORF receive capabilities, run the neighbor capability orf prefixlist command with the receive keyword.
```
device(config-bgp-ipv4u)# neighbor 10.1.2.3 capability orf prefixlist receive
```
To advertise both ORF send and receive capabilities, run the neighbor capability orf prefixlist command.
```
device(config-bgp-ipv4u)# neighbor 10.1.2.3 capability orf prefixlist
```

Example

The following example summarizes the commands for advertising ORF in receive mode.

device# configure terminal
device(config)# router bgp
device(config-bgp-router)# address-family ipv4 unicast 
device(config-bgp-ipv4u)# neighbor 10.1.2.3 capability orf prefixlist receive

Example

The following example summarizes the commands for advertising ORF in send mode.

device# configure terminal
device(config)# router bgp
device(config-bgp-router)# address-family ipv4 unicast 
device(config-bgp-ipv4u)# 10.1.2.3 prefix-list myprefixlist in
device(config-bgp-ipv4u)# 10.1.2.3 capability orf prefixlist send

Example

The following example summarizes the commands for advertising ORF in both send and receive modes.

device# configure terminal
device(config)# router bgp
device(config-bgp-router)# address-family ipv4 unicast 
device(config-bgp-ipv4u)# neighbor 10.1.2.3 prefix-list myprefixlist in
device(config-bgp-ipv4u)# neighbor 10.1.2.3 capability orf prefixlist