Distance Bgp (Bgp Router Configuration) - Dell N1100-ON Reference Manual

can be overlap between the prefix and mask configured for different
commands. When there is overlap, the command whose prefix and wildcard
mask are the longest match for a neighbor's address is applied to routes from
that neighbor.
An ECMP route's distance is determined by applying distance commands to
the neighbor that provided the best path.
The distance command is not applied to existing routes. To apply
configuration changes to the distance command itself or the prefix list to
which a distance command applies, you must force a hard reset of affected
neighbors.
Command History
Introduced in version 6.2.0.1 firmware.
Example
To set the preference value of the BGP route to 100.0.0.0/8 from neighbor
10.1.1.1, use the following distance command:
(R1) (Config)# ip prefix-list pfx-list1 permit 100.0.0.0/8
(R1) (Config)# router bgp 1
(R1) (Config-router)# distance 25 10.1.1.1 0.0.0.0 pfx-list1
To set the preference value to 12 for all BGP routes from neighbor 10.1.1.1,
use the following distance command:
(R1) (Config-router)# distance 12 10.1.1.1 0.0.0.0
To set the preference value of all routes within 100.0.0.0/8 from any neighbor,
use the following distance command:
(R1) (Config)# ip prefix-list pfx-list2 permit 100.0.0.0/8 ge 8
(R1) (Config)# router bgp 1
(R1) (Config-router)#distance 25 0.0.0.0 255.255.255.255 pfx-list2

distance bgp (BGP Router Configuration)

Use this command to set the preference (also known as administrative
distance) of BGP routes.
Syntax
distance bgp external-distance internal-distance local-distance
no distance bgp
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Layer 3 Routing Commands