Displaying route flap dampening statistics – Brocade Communications Systems Layer 3 Routing Configuration ICX 6650 User Manual
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Brocade ICX 6650 Layer 3 Routing Configuration Guide
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Route flap dampening configuration
Displaying and clearing route flap dampening statistics
The software provides many options for displaying and clearing route flap statistics. To display the
statistics, use either of the following methods.
Displaying route flap dampening statistics
To display route dampening statistics or all the dampened routes, enter the show ip bgp
flap-statistics command at any level of the CLI.
Syntax: show ip bgp flap-statistics [regular-expression regular-expression | address mask
[longer-prefixes] | neighbor ip-addr]
The regular-expression regular-expression parameter is a regular expression. The regular
expressions are the same ones supported for BGP4 AS-path filters. Refer to
The address mask parameter specifies a particular route. If you also use the optional
longer-prefixes parameter, then all statistics for routes that match the specified route or have a
longer prefix than the specified route are displayed. For example, if you specify 10.157.0.0 longer,
then all routes with the prefix 10.157. or that have a longer prefix (such as 10.157.22.) are
displayed.
The neighbor ip-addr parameter displays route flap dampening statistics only for routes learned
from the specified neighbor. You also can display route flap statistics for routes learned from a
neighbor by entering the following command: show ip bgp neighbors ip-addr flap-statistics.
shows the field definitions for the display output.
Brocade#show ip bgp route 10.1.44.0/24
Number of BGP Routes matching display condition : 1
Status A:AGGREGATE B:BEST b:NOT-INSTALLED-BEST C:CONFED_EBGP D:DAMPED
E:EBGP H:HISTORY I:IBGP L:LOCAL M:MULTIPATH S:SUPPRESSED F:FILTERED
Prefix Next Hop Metric LocPrf Weight Status
1 10.1.44.0/24 10.2.0.1 1 101 32768 BLS
AS_PATH:
Route is advertised to 1 peers:
10.1.0.2(4)
Brocade#show ip bgp flap-statistics
Total number of flapping routes: 414
Status Code >:best d:damped h:history *:valid
Network
From
Flaps Since
Reuse
Path
h> 192.50.206.0/23
10.90.213.77
1
0 :0 :13 0 :0 :0 65001 4355 1 701
h> 192.168.192.0/20
10.90.213.77
1
0 :0 :13 0 :0 :0 65001 4355 1 7018
h> 192.168.165.0/24
10.90.213.77
1
0 :0 :13 0 :0 :0 65001 4355 1 7018
h> 192.168.208.0/23
10.90.213.77
1
0 :0 :13 0 :0 :0 65001 4355 1 701
h> 192.168.0.0/16
10.90.213.77
1
0 :0 :13 0 :0 :0 65001 4355 1 701
*> 192.168.220.0/24
10.90.213.77
1
0 :1 :4 0 :0 :0 65001 4355 701 62