Displaying filtered-out bgp4+ routes – Brocade BigIron RX Series Configuration Guide User Manual

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BigIron RX Series Configuration Guide

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Displaying BGP4+ information

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Displaying filtered-out BGP4+ routes

When you enable the soft reconfiguration feature, the switch saves all updates received from the
specified neighbor or peer group. The saved updates include those that contain routes that are
filtered out by the BGP4+ route policies in effect on the switch.

You can display a summary or more detailed information about routes that have been filtered out
by BGP4+ route policies.

To display a summary of the routes that have been filtered out by BGP4+ route policies, enter the
following command at any level of the CLI.

The routes displayed by the command are the routes that the switch’s BGP policies filtered out. The
switch did not place the routes in the BGP4+ route table, but did keep the updates. If a policy
change causes these routes to be permitted, the switch does not need to request the route
information from the neighbor, but instead uses the information in the updates.

Syntax: show ipv6 bgp filtered-routes [<ipv6-prefix>/<prefix-length> [longer-prefixes] |

[as-path-access-list <name>] | [prefix-list <name>]

The <ipv6-prefix>/<prefix-length> parameter displays the specified IPv6 prefix of the destination
network 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.

TABLE 205

Dampened BGP4+ path information

This field...

Displays...

Status codes

A list of the characters the display uses to indicate the path’s status. The
status code appears in the left column of the display, to the left of each
route. The status codes are described in the command’s output. The
status column displays a “d” for each dampened route.

Network

The destination network of the route.

From

The IPv6 address of the advertising peer.

Flaps

The number of times the path has flapped.

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 available
again.

Path

The AS path of the route.

BigIron RX# show ipv6 bgp filtered-routes

Searching for matching routes, use ^C to quit...

Status A:AGGREGATE B:BEST b:NOT-INSTALLED-BEST C:CONFED_EBGP D:DAMPED

E:EBGP H:HISTORY I:IBGP L:LOCAL M:MULTIPATH S:SUPPRESSED F:FILTERED

Prefix Next Hop Metric LocPrf Weight Status

1 3000::/16 2000:4::110 100 0 EF

AS_PATH: 65001 4355 701 80

2 4000::/16 2000:4::110 100 0 EF

AS_PATH: 65001 4355 1

3 5000::/16 2000:4::110 100 0 EF

AS_PATH: 65001 4355 701 1 189

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