ZyXEL Communications 1000 ユーザーズマニュアル

Chapter 16 Routing Protocols

ZyWALL USG 1000 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 

), and click either the Add icon or an Edit icon.

Figure 283   Configuration > Network > Routing > OSPF > Add

The following table describes the labels in this screen.  

Table 90   Configuration > Network > Routing > OSPF > Add

Area ID

Type the unique, 32-bit identifier for the area in IP address format.

Type

Select the type of OSPF area.

Normal - This area is a normal area. It has routing information about 
the OSPF AS and about networks outside the OSPF AS.

Stub - This area is an stub area. It has routing information about the 
OSPF AS but not about networks outside the OSPF AS. It depends on a 
default route to send information outside the OSPF AS.

NSSA - This area is a Not So Stubby Area (NSSA), per RFC 1587. It has 
routing information about the OSPF AS and networks that are outside 
the OSPF AS and are directly connected to the NSSA. It does not have 
information about other networks outside the OSPF AS.

Authentication

Select the default authentication method used in the area. This 
authentication protects the integrity, but not the confidentiality, of 
routing updates. 

None uses no authentication.

Text uses a plain text password that is sent over the network (not very 
secure). 

MD5 uses an MD5 password and authentication ID (most secure).