Brocade Communications Systems ICX 6650 Displaying and clearing route flap dampening statistics

Brocade ICX 6650 Layer 3 Routing Configuration Guide 359

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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.

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 “Using regular

expressions to filter” on page336.

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.

Table 6 3 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