Инструкции По Установке для 3com S7906E

 

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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.  

For the parameters configured on both sides for ORF capability negotiation, refer to 

. 

Follow these steps to enable the BGP ORF capability:  

Enter system view 

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 

Required 

Enabled by default. 

Enable the non-standard ORF 
capability for a BGP peer/peer 
group 

peer { group-name | 
ip-address } 
capability-advertise orf 
non-standard 

Optional 

By default, standard BGP ORF 
capability defined in RFC 5291 
and RFC 5292 is supported.  

If the peer supports only 
non-standard ORF, you need to 
configure this command.  

Enable the ORF capability for a 
BGP peer/peer group 

peer { group-name | 
ip-address } 
capability-advertise orf 
ip-prefix { both | receive | 
send } 

Required 

Disabled by default. 

 

Table 1-2 Description of the both, send, and receive parameters and the negotiation result 

The ORF sending capability is enabled locally and 
the ORF receiving capability is enabled on the peer. 

The ORF receiving capability is enabled locally and 
the ORF sending capability is enabled on the peer. 

Both the ORF sending and receiving capabilities are 
enabled locally and on the peer, respectively.  

 

If the router receives no keepalive messages from a BGP peer within the holdtime, it disconnects from 

the peer. 

With quick eBGP connection reestablishment enabled, the router, when the link to a directly connected 

eBGP peer is down, will reestablish a session to the eBGP peer immediately.