H3C Technologies H3C S12500 Series Switches - Manual (Page 245)

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Enabling the MBGP ORF capability
The MBGP Outbound Router Filter (ORF) feature enables an MBGP speaker to send a set of ORFs to its
MBGP peer through route-refresh messages. The peer then applies the ORFs, in addition to its local
routing policies (if any), to filter updates to the MBGP speaker, thus reducing the number of exchanged
update messages and saving network resources.
After you enable the ORF capability, the local MBGP-enabled switch negotiates the ORF capability with
the MBGP peer through Open messages. That is, the MBGP-enabled switch determines whether to carry
ORF information in messages, and if yes, whether to carry non-standard ORF information in the packets.
After completing the negotiation process and establishing the neighboring relationship, the
MBGP-enabled switch and its MBGP peer can exchange ORF information through specific route-refresh
messages.
For the parameters configured on both sides for ORF capability negotiation, see
Table 18 .
To enable the MBGP ORF capability:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter BGP view. bgp as-number N/A
3. Enable BGP route refresh for a
peer/peer group.
peer { group-name | ip-address }
capability-advertise route-refresh
Optional.
Enabled by default.
If this feature is not enabled, you
need to configure this command.
For more information about the
command, see Layer 3—IP Routing
Command Reference.
4. Enable the non-standard BGP
ORF capability for a BGP
peer/peer group.
peer { group-name |
ipv6-address } capability-advertise
orf non-standard
Optional.
By default, standard BGP ORF
capability defined in RFC 5291
and RFC 5292 is supported.
If this feature is not enabled, you
need to configure this command.
For more information about the
command, see Layer 3—IP Routing
Command Reference.
5. Enter MBGP address family
view.
ipv4-family multicast N/A
6. Enable the ORF IP prefix
negotiation capability for an
MBGP peer/peer group.
peer { group-name | ip-address }
capability-advertise orf ip-prefix
{ both | receive | send }
Optional.
Not enabled by default.
Table 18 Description of the both, send, and receive parameters and the negotiation result
Local parameter Peer parameter Negotiation result
send
• receive
• both
The ORF sending capability is enabled locally and
the ORF receiving capability is enabled on the
peer.