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6 ospf virtual-links – ZyXEL Communications GS-4012F/4024 User Manual

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GS-4012F/4024 User’s Guide

178

Chapter 25 OSPF

25.6 OSPF Virtual-Links

Configure and view virtual link settings in this screen. See

Section 25.1 on page 169

for more

information on OSPF.

In the OSPF Configuration screen, click Virtual-Link to display the screen as shown next.

Key ID

When you select MD5 in the Authentication field, specify the identification number of

the authentication you want to use.

Key

When you select Simple in the Authentication field, enter a password eight-character

long. Characters after the eighth character will be ignored.
When you select MD5 in the Authentication field, enter a password 16-character long.

Cost

The interface cost is used for calculating the routing table. Enter a number between 0

and 65535. The default interface cost is 15.

Priority

The priority you assign to the interface is used in router elections to decide which router

is going to be the Designated Router (DR) or the Backup Designated Router (BDR).

You can assign a number between 0 and 255. A priority of 0 means that the router will

not participate in router elections.

Add

Click Add to save your changes to the switch’s run-time memory. The switch loses

these changes if it is turned off or loses power, so use the Save link on the top

navigation panel to save your changes to the non-volatile memory when you are done

configuring.

Cancel Click

Cancel to start configuring the above fields again.

Clear

Click Clear to set the above fields back to the factory defaults.

Index

This field displays the index number for an interface.

Network

This field displays the IP interface information.

Area ID

This field displays the area ID (that uses the format of an IP address in dotted decimal

notation) of an area to associate the interface to that area.

Authentication This field displays the authentication method used (Same-as-Area, None, Simple or

MD5).

Key ID

When the Authentication field displays MD5, this field displays the identification

number of the key used.

Cost

This field displays the interface cost used for calculating the routing table.

Priority

This field displays the priority for this OSPF interface.

Delete

Click Delete to remove the selected entry from the summary table.

Cancel

Click Cancel to start configuring the above fields again.

Table 65 OSPF Interface (continued)

LABEL

DESCRIPTION