Brocade BigIron RX Series Configuration Guide - Manual (Page 1327)

BigIron RX Series Configuration Guide 1249
53-1002484-04
Displaying BGP4+ information
46
Syntax: show ipv6 bgp flap-statistics [<ipv6-prefix>/<prefix-length> [longer-prefixes] |
as-path-filter <number> | neighbor <ipv6-address> | regular-expression
<regular-expression>]
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
“Displaying route flap dampening statistics for a BGP4+ neighbor” on
page 1261.
This display shows the following information:
TABLE 208 Route flap dampening statistics
This field... Displays...
Total number of flapping routes The total number of routes in the switch’s BGP4+ route table that have
changed state and thus have been marked as flapping routes.
Status code 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.
Network The destination network of the route.
From The IPv6 address of the advertising peer.
Flaps The number of flaps (state changes) the route has experienced.
Since The amount of time (in hh:mm:ss) since the first flap of this route.
BigIron RX# show ipv6 bgp flap-statistics
Total number of flapping routes: 14
Status Code
>
:best d:damped h:history *:valid
Network From Flaps Since Reuse Path
h
>
2001:2::/32 3001:23::47 1 0 :0 :13 0 :0 :0 65001 4355 1 701
*
>
3892:34::/32 3001:23::47 1 0 :1 :4 0 :0 :0 65001 4355 701 62