Motorola BSR 2000, Руководство по настройке и управлению

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BSR 2000 Configuration and Management Guide Release 1.0
11-16 MGBI 526360-001-00 Rev. B
Changing OSPF Administrative Distances
The administrative distance number between 0 and 255 rates the credibility of routing
information from one or more routers. A routing source assigned a low administrative
distance is trusted more than a routing source that is assigned a high administrative
distance value.
The default administrative distance for inter-area and intra-area OSPF routes, and
external routes is 110. Use either the following options to set the administrative
distance for OSPF routes:
■
Use the distance command in Router Configuration mode to set all three OSPF
distances to the same value:
MOT (config-ospf)#
distance <
1-255
>
where:
1-255
is the administrative distance for all OSPF routes.
Routes within an OSPF area use the intra-area argument ; routes to another OSPF
area use the inter-area argument ; and routes from another routing domain learned
through the redistribution of a route use the external argument.
■
Use the distance ospf command in Router Configuration mode to set an
individual value for the administrative distance value for an intra-area OSPF
route, inter-area OSPF Route, and external route:
MOT
(config-ospf)#
distance ospf intra-area <
1-255
> inter-area <
1-255
>
external <
1-255
>
where:
1-255
represents the administrative distance number for all routes within an
area.
1-255
represents the administrative distance number for all routes from one
area to another area.
1-255
represents the administrative distance number for routes learned by
redistribution from other routing domains.
Note: If the assigned administrative distance for a routing source is 255, it is
not trusted and is ignored.