516 CHAPTER 27: BGP CONFIGURATION COMMANDSacl-number: Number of the specified AS path to be matched, ranging from 1 to199.network-address: Displays the flap information of this IP address.mask: Network mask.longer-match: Shows the route flap-info that is more specific than address, mask.DescriptionUse the display bgp routing-table flap-info command to view BGP flap-info. Ifthe network-address mask arguments are set to 0.0.0.0 0.0.0.0, this commanddisplays the flap statistics of all BGP routes.Example# Display BGP flap-info. display bgp routing-table flap-infoFlags: # - valid, ^ - best,D - damped, H - history,I - internal, S - aggregate suppressedB - balanceDest/Mask Source Keepup-time Damping-limit Flap-times Origin As-path--------------------------------------------------------------------#D 11.1.0.0/16 133.1.1.2 48 1:20:30 4 IGP 200Table 77 Description of the fields of the display bgp routing-table flap-info commandItem DescriptionFlagsState flags:# - valid (valid)^ - best (selected)D - damped (discarded)H - history (history)I - internal (interior gateway protocol)S - aggregate suppressed (suppressed)#D The valid and damped routeDest/Mask The dampened route to the destination network 11.1.0.0Source The nexthop of the routeKeepup-time The time that route damping has continuedDamping-limit The time before dampening turns invalid and the route can be reused.Flap-times The times of the route flapOriginOrigin attribute of route, which indicates that the route updates its originrelative to the route originating it from AS. It has three optional values:IGPThe route belongs to inside of AS. BGP treats aggregate route andthe route defined by the command network as inside of AS, andorigin type as IGP.EGP The route is learned from exterior gateway protocol (EGP).INCShort for INCOMPLETE: indicates that the original source of theroute information is unknown (learned by other methods). BGP setsthe origin of the route imported through other IGP protocols asINCOMPLETE