Brocade FastIron Ethernet Switch Layer 3 Routing Configuration Guide - Manual (Page 557)

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 2001:db8::/16 longer-prefixes , then all routes with the prefix
2001:db88:: or that have a longer prefix (such as 2001:db8::/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 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 567.
show ipv6 bgp flap-statistics output descriptions TABLE 111
This field... Displays...
Total number of
flapping routes The total number of routes in the device’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.
Reuse The amount of time (in hh:mm:ss) after which the path is again available.
Path The AS path of the route.
You also can display all the dampened routes by using the show ipv6 bgp dampened-paths
command. For more information, refer to
Displaying dampened BGP4+ paths on page 551.
Displaying BGP4+ neighbor information
You can display the following information about a device’s BGP4+ neighbors:
Configuration information and statistics:
Displaying BGP4+ neighbor information
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