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Chapter 10 Routing Protocols
ZyWALL 110/310/1100 Series User’s Guide
204
Figure 117 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 7.3.1 on page 110.
4 Set up virtual links, as needed.
10.3.1 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.
Click Configuration > Network > Routing > OSPF to open the following screen.