3com S7906E Instruccion De Instalación
1-11
To do…
Use the command…
Remarks
Enter system view
system-view
—
Enter BGP view
bgp as-number
—
Enable BGP route refresh for a
peer/peer group
peer/peer group
peer { group-name |
ip-address }
capability-advertise
route-refresh
ip-address }
capability-advertise
route-refresh
Optional
Enabled by default
Perform a manual soft reset
If the peer does not support route-refresh, you can use the peer keep-all-routes command to save all
the route updates from the peer, and then use the refresh bgp ipv4 multicast command to soft-reset
MBGP connections to refresh the MBGP routing table and apply the new policy without tearing down
MBGP connections.
Follow these steps to configure MBGP manual soft reset
To do…
Use the command…
Remarks
Enter system view
system-view
—
Enter BGP view
bgp as-number
—
Disable BGP route-refresh and
multi-protocol extensions for a
peer/peer group
multi-protocol extensions for a
peer/peer group
peer { group-name |
ip-address }
capability-advertise
conventional
ip-address }
capability-advertise
conventional
Optional
Enabled by default
Enter IPv4 MBGP address
family view
family view
ipv4-family multicast
—
Keep all original routes from a
peer/peer group regardless of
whether they pass the inbound
filtering policies
peer/peer group regardless of
whether they pass the inbound
filtering policies
peer { group-name |
ip-address } keep-all-routes
ip-address } keep-all-routes
Required
Not kept by default
Return to user view
return
—
Soft-reset MBGP connections
manually
manually
refresh bgp ipv4 multicast
{ all | ip-address | group
group-name | external |
internal } { export | import }
{ all | ip-address | group
group-name | external |
internal } { export | import }
Optional
Enabling the MBGP ORF Capability
The BGP Outbound Route Filter (ORF) feature allows a BGP speaker to send to 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, thus 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 (that is, determine whether to carry ORF information in messages;
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.