ZyXEL Communications XS3800-28, User Manual, Page: 507 / 789

Chapter 67 OSPF
XS3800-28 User’s Guide
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67.3.1 Add/Edit IPv4 OSPF Areas
Use this screen to configure an IPv4 OSPF area. Click Add/Edit , or select an entry and click Add/Edit in
the in the NETWORKING > OSPF > IPv4 OSPF > OSPF Setup screen to access this screen.
Figure 402 NETWORKING > OSPF > IPv4 OSPF > OSPF Setup: Area Setup > Add/Edit
Metric Type Select 1 to configure the default route as type 1, which has a default cost (metric) of 20 and
adds up the cost toward the destination. Its external metrics are directly comparable to the
internal OSPF cost. When selecting a path, the internal OSPF cost is added to the AB boundary
router to the external metrics.
Select 2 to configure the default route as type 2. The route has a default cost of 20 and the
metric will never change along a traffic path. Its external metrics are not comparable to the
OSPF cost. In this case, the external cost of the AB boundary router is used in path decision to a
destination.
Apply Click Apply 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 begin configuring this screen afresh.
Use the below section to view and configure the IPv4 OSPF area settings.
Index This field displays the index number of an area.
Name This field displays the descriptive name of an area.
Area ID This field displays the area ID (that uses the format of an IP address in dotted decimal notation)
that uniquely identifies an area.
An area ID of 0.0.0.0 indicates the backbone.
Authentication This field displays the authentication method used ( None , Simple or MD5 ).
Stub / NSSA This field displays the area defined ( Stub , NSSA or None ).
Select an entry’s check box to select a specific entry. Otherwise, select the check box in the
table heading row to select all entries.
Add/Edit Click Add/Edit to add a new entry or edit a selected one.
Delete Click Delete to remove the selected entries.
Table 267 NETWORKING > OSPF > IPv4 OSPF > OSPF Setup (continued)
LABEL DESCRIPTION