ZyXEL Communications ZyWall USG 50-H Series, User Manual

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Chapter 11 Routing Protocols
ZyWALL USG 50-H User’s Guide
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Figure 180 OSPF: Virtual Link
In this example, area 100 does not have a direct connection to the backbone. As a result, you
should set up a virtual link on both ABR in area 10. The virtual link becomes the connection
between area 100 and the backbone.
You cannot create a virtual link to a router in a different area.
OSPF Configuration
Follow these steps when you configure OSPF on the ZyWALL.
1 Enable OSPF.
2
Set up the OSPF areas.
3 Configure the appropriate interfaces. See Section 8.4.1 on page 154 .
4
Set up virtual links, as needed.
11.3.1 Configuring the OSPF Screen
Use the first OSPF screen to specify the OSPF router the ZyWALL uses in the OSPF AS and
maintain the policies for redistribution. In addition, it provides a summary of OSPF areas,
allows you to remove them, and opens the
OSPF Add/Edit screen to add or edit them.
To access this screen, login to the web configurator. When the main screen appears, click once
on
Network > Routing > OSPF to open the following screen.
Figure 181 Network > Routing > OSPF