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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The following table describes the labels in this screen. See Section 11.3.2 on page 243 for
more information as well.
11.3.2 OSPF Area Add/Edit Screen
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 Section 11.3 on page 239 ), and click
either the Add icon or an Edit icon.
Table 89 Network > Routing Protocol > OSPF
LABEL DESCRIPTION
OSPF Router ID Select the 32-bit ID the ZyWALL uses in the OSPF AS.
Default - the highest available IP address assigned to the interfaces is the
ZyWALL’s ID.
User Define - enter the ID (in IP address format) in the field that appears when
you select User Define .
Redistribute
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.
Apply Click this button to save your changes to the ZyWALL.
Reset Click this button to return the screen to its last-saved settings.