Loading ...
Loading ...
Loading ...
DXS-3600 Series 10GbE Layer 2/3 Switch CLI Reference Guide
93
Parameters
IP-ADDRESS Specifies the IP address of the BGP peer.
PEER-GROUP-NAME Specifies the name of a Border Gateway Protocol (BGP) peer group. The maximum
length is 16 characters.
receive Specifies to enable the ORF capability in the receive mode.
send Specifies to enable the ORF capability in the send mode.
both Specifies to enable the ORF capabilities in both the receive and send modes.
Default
No ORF capabilities are advertised to a peer router.
Command Mode
Router Configuration Mode.
Address Family Configuration Mode (IPv4 Unicast, VPNv4 and VRF).
Command Default Level
Level: 8. (EI Mode Only Command)
Usage Guideline
The BGP Outbound Route Filter (ORF) capability allows one BGP router to install its
configured inbound prefix list filter on to the remote BGP router. This is used for
reducing the amount of unwanted routing updates from the remote peer.
When using this command, a BGP connection will be torn down, so the following log
message will be generated.
[BGP(2):] BGP connection is normally closed (Peer:<ipaddress>)
Where the <ipaddress> is the address of the peer. After a while, the connection will
be rebuilt, and the following log message will be generated.
[BGP(1):] BGP connection is successfully established Peer:<ipaddress>
Where the <ipaddress> is the address of the peer.
Use the show ip bgp neighbors or show ip bgp peer-group command to verify
your settings.
Example
The following example shows how to configure the router to advertise ORF.
Assume there are two routers, R1 (10.90.90.90) and R2 (10.1.1.1). R2 has two BGP
routes, 172.18.1.0/24 and 172.19.1.0/24. R1 only want to receive 172.18.0.0/16, and
then it can notify to R2 its willingness though ORF.
On router R1, configure an ip prefix-list named ‘myorf’ first.
DXS-3600-32S#configure terminal
DXS-3600-32S(config)#ip prefix-list myorf permit 172.18.0.0/16 le 32
DXS-3600-32S(config)#
Example
Then, set the routing policy to R2, and advertise the ORF to R2.
DXS-3600-32S#configure terminal
DXS-3600-32S(config)#router bgp 100
DXS-3600-32S(config-router)#neighbor 10.1.1.1 remote-as 1
DXS-3600-32S(config-router)#neighbor 10.1.1.1 prefix-list myorf in
DXS-3600-32S(config-router)#neighbor 10.1.1.1 capability orf prefix-list send
DXS-3600-32S(config-router)#
Example
On router R2, advertise its ORF capability in receive direction to R1.
DXS-3600-32S#configure terminal
DXS-3600-32S(config)#router bgp 101
DXS-3600-32S(config-router)#neighbor 10.90.90.90 remote-as 10
DXS-3600-32S(config-router)#neighbor 10.90.90.90 capability orf prefix-list receive
DXS-3600-32S(config-router)#
Loading ...
Loading ...
Loading ...