H3C Technologies H3C S10500 Series Switches - Manual (Page 237)

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To do… Use the command… Remarks
Enable BGP route refresh for a peer or peer
group
peer { group-name | ip-address }
capability-advertise
route-refresh
Optional
Enabled by default
Configure manual soft-reset
If a BGP peer does not support route-refresh, you must save updates from the peer on the local router by
using the peer keep-all-routes command, and use the refresh bgp command to refresh the BGP routing
table.
Following these steps to save all route updates from a peer or peer group:
To do… Use the command… Remarks
Enter system view system-view —
Enter BGP view bgp as-number —
Disable BGP route-refresh and multi-protocol
extension capability for a peer or peer
group
peer { group-name | ip-address }
capability-advertise
conventional
Required
Enabled by default
Save all routes from a peer or peer group
peer { group-name | ip-address }
keep-all-routes Required
Not saved by default
Return to user view return —
Perform manual soft reset on BGP
connections
refresh bgp { all | ip-address |
group group-name | external |
internal } { export | import }
Required
NOTE:
If the BGP peer does not support route-refresh and the peer keep-all-routes command is not configured
for it, you need to decide whether to manually disconnect the peer to learn routes again according to the
impact of the new policy.
Enabling the BGP ORF capability
The BGP Outbound Route Filtering (ORF) feature allows a BGP speaker to send its BGP peer a set of ORFs
through route-refresh messages. The peer then applies the ORFs, in addition to its local routing policies
(if any), to filter updates to the BGP speaker, reducing the number of exchanged Update messages and
saving network resources.
After you enable the BGP ORF capability, the local BGP router negotiates the ORF capability with the
BGP peer through Open messages (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 BGP router and its BGP peer can exchange ORF
information through specific route-refresh messages.
For the parameters configured on both sides for ORF capability negotiation, see
Table 5 .
Follow these steps to enable the BGP ORF capability: