Foundry Configuration Guide for the FESX, FSX, and FWSX
21 - 64 © Foundry Networks, Inc. December 2005
You also can display all the dampened routes by entering the following command:
show ip bgp dampened-paths.
Clearing Route Flap Dampening Statistics
To clear route flap dampening statistics, use the following CLI method.
NOTE: Clearing the dampening statistics for a route does not change the dampening status of the route.
To clear all the route dampening statistics, enter the following command at any level of the CLI:
FESX424 Router# clear ip bgp flap-statistics
Syntax: clear ip bgp flap-statistics [regular-expression <regular-expression> | <address> <mask> | neighbor <ip-
addr>]
The parameters are the same as those for the show ip bgp flap-statistics command (except the longer-prefixes
option is not supported). See “Displaying Route Flap Dampening Statistics” on page 21-63.
NOTE: The clear ip bgp damping command not only clears statistics but also un-suppresses the routes. See
“Displaying Route Flap Dampening Statistics” on page 21-63.
Generating Traps for BGP
You can enable and disable SNMP traps for BGP. BGP traps are enabled by default.
To enable BGP traps after they have been disabled, enter the following command:
FESX424 Router(config)# snmp-server enable traps bgp
Syntax: [no] snmp-server enable traps bgp
Status code Indicates the dampening status of the route, which can be one of the
following:
• > – This is the best route among those in the BGP4 route
table to the route’s destination.
• d – This route is currently dampened, and thus unusable.
• h – The route has a history of flapping and is unreachable
now.
• * – The route has a history of flapping but is currently usable.
Network The destination network of the route.
From The neighbor that sent the route to the Layer 3 Switch.
Flaps The number of flaps (state changes) the route has experienced.
Since The amount of time since the first flap of this route.
Reuse The amount of time remaining until this route will be un-suppressed
and thus be usable again.
Path Shows the AS-path information for the route.
Table 21.4: Route Flap Dampening Statistics
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