Displaying Route Flap Dampening Statistics - Dell PowerConnect B-RX Configuration Manual

26
Displaying BGP4 information

Displaying route flap dampening statistics

To display route dampening statistics or all the dampened routes, enter the following command at
any level of the CLI.
BigIron RX# show ip bgp flap-statistics
Total number of flapping routes: 414
h>
h>
h>
h>
h>
*>
Syntax: show ip bgp flap-statistics [regular-expression <regular-expression> | <address> <mask>
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
expressions"
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 209.157.0.0 longer,
then all routes with the prefix 209.157 or that have a longer prefix (such as 209.157.22) 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 filter-list <num> parameter specifies one or more filters. Only the routes that have been
dampened and that match the specified filters are displayed.
This display shows the following information.
TABLE 127
This field...
Total number of flapping routes
Status code
Network
From
Flaps
Since
848
Status Code >:best d:damped h:history *:valid
Network From
192.50.206.0/23 166.90.213.77
203.255.192.0/20 166.90.213.77
203.252.165.0/24 166.90.213.77
192.50.208.0/23 166.90.213.77
133.33.0.0/16 166.90.213.77
204.17.220.0/24 166.90.213.77
[longer-prefixes] | neighbor <ip-addr> | filter-list <num>...]
on page 794.
Route flap dampening statistics
Flaps Since
1 0 :0 :13 0 :0 :0
1 0 :0 :13 0 :0 :0
1 0 :0 :13 0 :0 :0
1 0 :0 :13 0 :0 :0
1 0 :0 :13 0 :0 :0
1 0 :1 :4
Displays...
The total number of routes in the BigIron RX's BGP4 route table that
have changed state and thus have been marked as flapping routes.
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.
The destination network of the route.
The neighbor that sent the route to the BigIron RX.
The number of flaps (state changes) the route has experienced.
The amount of time since the first flap of this route.
Reuse Path
65001 4355 1 701
65001 4355 1 7018
65001 4355 1 7018
65001 4355 1 701
65001 4355 1 701
0 :0 :0 65001 4355 701 62
"Using regular
BigIron RX Series Configuration Guide
53-1001810-01