ZyXEL Communications ZyWALL 300 User Manual

Chapter 13 Routing Protocols

ZyWALL USG 300 User’s Guide

The OSPF Area Add/Edit screen allows you to create a new area or edit an existing one. To 
access this screen, go to the OSPF summary screen (see 

click either the Add icon or an Edit icon.

Active

Select this check box to advertise routes that were learned from the indicated 
source.
•

If you select this for RIP, the ZyWALL advertises routes learned from RIP to 
Normal and NSSA areas but not to Stub areas.

•

If you select this for static routes, the ZyWALL advertises routes learned from 
static routes to all types of areas.

Route

This field displays other sources of routing information that the ZyWALL can 
advertise in the OSPF AS.

Type

Select how OSPF calculates the cost associated with routing information from the 
indicated source. Choices are: Type 1 and Type 2.
Type 1 - cost = OSPF AS cost + external cost (Metric)
Type 2 - cost = external cost (Metric); the OSPF AS cost is ignored.

Metric

Type the external cost for routes provided by the indicated source. The metric 
represents the “cost” of transmission for routing purposes. The way this is used 
depends on the Type field. This value is usually the average cost in the OSPF AS, 
and it can be between 1 and 16777214.

Area

This section displays information about OSPF areas in the ZyWALL.

#

This field is a sequential value, and it is not associated with a specific area.

Area

This field displays the 32-bit ID for each area in IP address format.

Type

This field displays the type of area. This type is different from the Type field above.

Authentication

This field displays the default authentication method in the area.

Add icon

This column provides icons to add, edit, and remove areas.
To add an area, click the Add icon at the top of the column. The OSPF Area Add/
Edit screen appears.
To edit an area, click the Edit icon next to the area. The Area Add/Edit screen 
appears.
To delete an area, click on the Remove icon next to the area. The web 
configurator confirms that you want to delete the area before doing so.

Table 73   Network > Routing Protocol > OSPF (continued)