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4 configure ospf areas – ZyXEL Communications XGS-4528F User Manual

Page 237

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Chapter 28 OSPF

XGS-4528F User’s Guide

237

28.4 Configure OSPF Areas

To ensure that the Switch receives only routing information from a trusted layer 3 devices,
activate authentication. The OSPF supports three levels of authentication:

• None – no authentication is used.
• Simple – authenticate link state updates using an 8 printable ASCII character password.
• MD5 – authenticate link state updates using a 16 printable ASCII character password.

To configure an area, set the related fields in the OSPF Configuration screen.

Figure 123 IP Application > OSPF Configuration: Area Setup

The following table describes the related labels in this screen.

Table 90 IP Application > OSPF Configuration: Area Setup

LABEL

DESCRIPTION

Name

Enter a descriptive name (up to 32 printable ASCII characters) for identification

purposes.

Area ID

Enter a 32-bit ID (that uses the format of an IP address in dotted decimal notation) that

uniquely identifies an area.
A value of 0.0.0.0 indicates that this is a backbone (also known as Area 0). You can

create only one backbone area on the Switch.

Authentication Select

an authentication method (Simple or MD5) to activate authentication. Select

None (default) to disable authentication.
Usually interface(s) and virtual interface(s) should use the same authentication

method as the associated area. If interface(s) and virtual interface(s) use different

authentication methods than the associated area, the authentication methods are

based on the interface(s) and virtual interface(s) settings.