Configuring Area Border Routers - Juniper J2300 User Manual

J-series™ Services Router User Guide

Configuring Area Border Routers

A Services Router operating as an area border router (ABR) has interfaces
enabled for OSPF in the backbone area and in the area you are linking to the
backbone. For example, Services Router B acts as the ABR in Figure 84 and
has interfaces in both the backbone area and area
1.
2.
3.
4.
Table 118: Configuring Area Border Routers
Task
Navigate to the Ospf level in the
configuration hierarchy.
Verify that the backbone area has at
least one interface enabled for OSPF.
318
Configuring an OSPF Network with a Configuration Editor
Navigate to the top of the configuration hierarchy in either the J-Web or the CLI
configuration editor.
Perform the configuration tasks described in Table 118.
If you are finished configuring the network, commit the configuration.
After you create the areas on the appropriate Services Routers and add and
enable the appropriate interfaces to the areas, no additional configuration is
required to enable OSPF traffic within or across the areas.
Go on to one of the following procedures:
To control external route advertisement in the AS, see "Configuring Stub
and Not-So-Stubby Areas" on page 319.
To improve network operation, see "Tuning an OSPF Network for Efficient
Operation" on page 321.
To check the configuration, see "Verifying an OSPF Configuration" on
page 325.
J-Web Configuration Editor
In the configuration editor hierarchy,
select Protocols>Ospf.
Click 0.0.0.0 to display the Area ID
0.0.0.0 page, and verify that the
backbone area has at least one interface
enabled for OSPF.
For example, Services Router B in
Figure 84 has the following interfaces
enabled for OSPF in the backbone area:
Interface fe-0/0/0.0
Interface fe-0/0/1.0
To enable an interface on the backbone
area, see "Configuring a Single-Area
OSPF Network" on page 315.
.
0.0.0.3
CLI Configuration Editor
From the top of the configuration
hierarchy, enter
edit protocols ospf
View the configuration using the show
command:
show
For example, Services Router B in
Figure 84 has the following interfaces
enabled for OSPF in the backbone area:
area 0.0.0.0 { interface fe-0/0/0.0;
interface fe-0/0/1.0; }
To enable an interface on the backbone
area, see "Configuring a Single-Area
OSPF Network" on page 315.