ADTRAN AOS Version R10.1.0 Command Reference Manual page 3001

Command Reference Guide
distance <number>
Use the distance command to overwrite the open shortest path first (OSPF) route administrative distance.
This can be the same for all OSPF routes or different based on the route type. Use the no form of this
command to set the OSPF administrative distance to the default value. Variations of this command
include:
distance <number>
distance ospf intra-area <number>
distance ospf inter-area <number>
distance ospf external <number>
Syntax Description
<number>
ospf intra-area
ospf inter-area
ospf external
Default Values
By default, 110 is the administrative distance for OSPF routes.
Command History
Release 15.1
Usage Examples
The following example configures external OSPF routes to use an administrative distance of 20 while other
OSPF routes continue to use the default value of 110:
(config)#router ospf
(config-ospf)#distance ospf external 20
Technology Review
An AS is a set of routers under common administration control that usually use a common routing strategy.
Each AS is composed of routing areas, which are groups of adjoining networks and attached hosts.
Intra-area routing occurs when the source and destination hosts are in the same area; inter-area routing
occurs when the source and destination hosts are in different areas; and external routing occurs when
communication is between different ASs.
60000CRG0-35E
Specifies the administrative distance to use when adding OSPF routes into
the route table. Range is 0 to 255.
Specifies using a unique administrative distance for route paths between a
source and destination in the same routing area.
Specifies using a unique administrative distance for route paths between a
source and destination in different areas.
Specifies using a unique administrative distance for route paths between
different autonomous systems (ASs).
Command was introduced.
Copyright © 2012 ADTRAN, Inc.
Router (OSPF) Command Set
3001