558
The route is successfully transmitted to CE2 after refresh, on CE2 shown:
Switch#show ip bgp
BGP table version is 5, local router ID is 100.1.1.70
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 11.1.1.0/24 15.1.1.68 0 100 100 ?
*> 15.1.1.0/24 0.0.0.0 0 32768 ?
*> 20.1.1.0/24 15.1.1.68 0 100 100 ?
*> 100.1.1.0/24 0.0.0.0 0 32768 ?
Total number of prefixes 4
14.8.3.43 neighbor capability
Command:
neighbor {<ip-address>|<TAG>} capability {dynamic | route-refresh}
no neighbor {<ip-address>|<TAG>} capability {dynamic | route-refresh}
Function:
Configure dynamic update between neighbors and the route refresh capability
negotiation. The “
no neighbor {<ip-address>|<TAG>} capability {dynamic |
route-refresh}
” command do not enable the specific capability negotiation
Parameter: <ip-address>
:Neighbor IP address
<TAG>
: Name of peer group
Default:
Not configure the dynamic update capability but the route refresh capability.
Command Mode:
BGP routing mode and address family mode
Usage Guide:
This is an extended BGP capability. With this configuration supported
capabilities by both side will be negotiated in the OPEN messages, and the partner will
respond if this capability is supported by the partner and send NOTIFICATION if not. The
originating side will then send an OPEN excluded the capability to reestablish the
connection. The dynamic capability refers to when the address family negotiation
changes, the connection don’t have to be restarted. Route refresh refers to sending
refresh request when configuring some soft reconfigurable attributes and the partner will
retransmit the existing route to the originating side. With route refresh attribute, the
connection will not have to be restarted but be refreshed with the clear ip bgp * soft in
command.
Example:
Switch(config-router)#neighbor 10.1.1.64 capability dynamic
Switch(config-router)# no neighbor 10.1.1.64 capability route-refresh
14.8.3.44 neighbor capability orf prefix-list
