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

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Displaying BGP4+ information

Displaying route flap dampening statistics

To display route dampening statistics for all dampened routes, enter the following command at any
level of the CLI.
BigIron RX# show ipv6 bgp flap-statistics
Total number of flapping routes: 14
h>
*>
Syntax: show ipv6 bgp flap-statistics [<ipv6-prefix>/<prefix-length> [longer-prefixes] |
The <ipv6-prefix>/<prefix-length> parameter displays statistics for the specified IPv6 prefix only.
You must specify the <ipv6-prefix> parameter in hexadecimal using 16-bit values between colons
as documented in RFC 2373. You must specify the <prefix-length> parameter as a decimal value. A
slash mark (/) must follow the <ipv6-prefix> parameter and precede the <prefix-length>
parameter.
The longer-prefixes keyword allows you to display statistics for routes that match a specified or
longer IPv6 prefix. For example, if you specify 2000::/16 longer-prefixes, then all routes with the
prefix 2002:: or that have a longer prefix (such as 2002:e016::/32) are displayed.
The as-path-filter <number> parameter specifies an AS path filter to display. Specify a filter
number.
The neighbor <ipv6-address> parameter displays statistics for routes learned from the specified
neighbor only. You also can display route flap statistics for routes learned from a neighbor by
entering the following command: show ipv6 bgp neighbor <ipv6-address> flap-statistics.
The regular-expression <regular-expression> parameter is a regular expression. The regular
expressions are the same ones supported for BGP4 AS-path filters.
You can also display route flap dampening statistics for a specified IPv6 neighbor. For more
information, refer to
page 1159.
This display shows the following information:
TABLE 187
This field...
Total number of flapping routes
Status code
Network
From
1148
Status Code >:best d:damped h:history *:valid
Network From
2001:2::/32 3001:23::47
3892:34::/32 3001:23::47
as-path-filter <number> | neighbor <ipv6-address> | regular-expression
<regular-expression>]
"Displaying route flap dampening statistics for a BGP4+ neighbor"
Route flap dampening statistics
Flaps Since
1 0 :0 :13 0 :0 :0
1 0 :1 :4
Displays...
The total number of routes in the switch'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 IPv6 address of the advertising peer.
Reuse Path
65001 4355 1 701
0 :0 :0 65001 4355 701 62
on
BigIron RX Series Configuration Guide
53-1001810-01