3com S7906E 설치 설명서

 

1-11 

Enter system view 

— 

Enter BGP view 

bgp as-number 

— 

Enable BGP route refresh for a 
peer/peer group 

peer { group-name | 
ip-address } 
capability-advertise 
route-refresh 

Optional 

Enabled by default 

 

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 

Enter system view 

— 

Enter BGP view 

bgp as-number 

— 

Disable BGP route-refresh and 
multi-protocol extensions for a 
peer/peer group 

peer { group-name | 
ip-address } 
capability-advertise 
conventional 

Optional 

Enabled by default 

Enter IPv4 MBGP address 
family view 

ipv4-family multicast 

— 

Keep all original routes from a 
peer/peer group regardless of 
whether they pass the inbound 
filtering policies 

peer { group-name | 
ip-address } keep-all-routes 

Required 

Not kept by default 

Return to user view 

return 

— 

Soft-reset MBGP connections 
manually 

refresh bgp ipv4 multicast 
{ all | ip-address | group 
group-name | external | 
internal } { export | import } 

Optional 

 

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.