User Manual
UMN:CLI
V8102
609
12.1.12
Administrative Distance for BGP
An administrative distance is a rating of the trustworthiness of a routing information
source, such as an individual router or a group of routers. Numerically, an administrative
distance is an integer between 1 and 255. In general, the higher the value is, the lower
the trust rating is. An administrative distance of 255 means the routing information source
cannot be trusted at all and should be ignored.
To configure the administrative distance for BGP, use the following command.
Command
Mode
Description
distance
<1-255>
A.B.C.D/M
Router
Configures the administrative distance for BGP routes.
1-255: the administrative distance
A.B.C.D/M: IP source prefix
WORD: name of the access list
distance
<1-255>
A.B.C.D/M
WORD
distance bgp
<1-255> <1-255>
<1-255>
Specifies the administrative distance for BGP routes.
1-255: the administrative distance for BGP external
routes (default: 20)
1-255: the administrative distance for BGP internal
routes (default: 200)
1-255: the administrative distance for BGP local routes
(default: 200)
To remove an administrative distance, use the following command.
Command
Mode
Description
no distance
<1-255>
A.B.C.D/M
Router
Removes the configured administrative distance.
no distance
<1-255>
A.B.C.D/M
WORD
no distance bgp
12.1.13
IP Address Family
The V8102 recently supports both unicast and multicast as address-family. Use the fol-
lowing command in choosing either unicast or multicast to enter the
Address-Family Con-
figuratio
n mode allowing configuration of address-family specific parameters.
Use the following command in order to enable address family routing process, which
open you in
Address-Family Configuration
mode.
Command
Mode
Description
address-family ipv4
[
multicast
|
unicast
]
Router
Opens the
Address-Family Configuration
mode to con-
figure sessions for IPv4 prefixes.
address-family vpnv4
[
multicast
|
unicast
]
Opens the
Address-Family Configuration
mode to con-
figure sessions for VPNv4 prefixes.
exit-address-family
Address-
Family
Exits to
Router Configuration
mode.
