redistribute blackhole

This command specifies that blackhole routes are exported into BGP.

Syntax

redistribute blackhole [aspath-limit limit] [origin code] [med value] [local-pref value] [route-map name]

no redistribute blackhole [aspath-limit limit] [origin code] [med value] [local-pref value] [route-map name]

aspath-limit limit	(Optional) Specifies the upper limit on AS-path length. Valid values are 0 - 255. Default value is 1.
origin code	(Optional) Specifies the origin process attribute. Valid values are: 0 - IGP 1 - EGP 2 - Incomplete Default value is 2.
med value	(Optional) Specifies the multi-exit discriminator value for this route. Valid values are 0 - 4294967295. Default value is 0.
local-pref value	(Optional) Specifies a route selection value for this route when the same prefix is learned from multiple peers.
route-map name	(Optional) A route-map name to apply to these routes.

If a route-map is not specified, no route-map is applied.
If an aspath-limit is not specified, the aspath-limit is not included in updates.
If an origin code is not specified, the origin is set to the default value of 2 (incomplete).
If a med is not specified, the MED attribute is not included in updates. When MED is not included in an update, MED is treated as though it were set to 0.
If local-pref is not specified, the local-pref is set to the default value of 100.

BGP Router Configuration or BGP address family configuration mode.

The redistribute blackhole command provides for the exporting of blackhole routes into BGP.

The no redistribute blackhole command removes redistribution of blackhole route configuration from the router.

In the following example BGP is configured to redistribute all blackhole routes with the local preference set for 100.

System(su-config)->router bgp 65151
System(su-config-bgp)->redistribute blackhole local-pref 100

Published May 2016prev | next