Brocade Multi-Service IronWare Routing Configuration Guide (Supporting R05.6.00) User Manual
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Multi-Service IronWare Routing Configuration Guide
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Filtering
The ip-addr parameter specifies a particular network.
The ip-mask parameter specifies the network’s mask.
To un-suppress a specific route, enter a command such as the following.
Brocade# clear ip bgp dampening 10.157.22.0 255.255.255.0
This command un-suppresses only the routes for network 10.157.22.0/24.
Displaying and clearing route flap dampening statistics
The software provides many options for displaying and clearing route flap statistics.
Displaying route flap dampening statistics
To display route dampening statistics or all the dampened routes, enter the following command at
any CLI level.
Syntax: show ip bgp flap-statistics [regular-expression regular-expression | address mask
[longer-prefixes] | neighbor ip-addr] as-path-filter num
The regular-expression regular-expression parameter is a regular expression. Regular expressions
are the same ones supported for BGP4 AS-path filters. Refer to
The address mask parameters specify a particular route. If you also use the optional
longer-prefixes parameter, 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, all
routes with the prefix 10.157. or longer (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 neighbor ip-addr flap-statistics.
The as-path-filter num parameter specifies one or more filters. Only the routes that have been
dampened and that match the specified filter or filters are displayed.
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> 10.50.206.0/23
10.90.213.77
1
0 :0 :13 0 :0 :0 65001 4355 1 701
h> 10.255.192.0/20
10.90.213.77
1
0 :0 :13 0 :0 :0 65001 4355 1 7018
h> 10.252.165.0/24
10.90.213.77
1
0 :0 :13 0 :0 :0 65001 4355 1 7018
h> 10.50.208.0/23
10.90.213.77
1
0 :0 :13 0 :0 :0 65001 4355 1 701
h> 10.33.0.0/16
10.90.213.77
1
0 :0 :13 0 :0 :0 65001 4355 1 701
*> 10.17.220.0/24
10.90.213.77
1
0 :1 :4 0 :0 :0 65001 4355 701 62