ZyXEL Communications ZyWall USG20-VPN, Руководство пользователя

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Chapter 10 Routing
USG20(W)-VPN Series User’s Guide
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10.7.2 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 10.7 on page 241 ), and click either the
Add icon or an Edit icon.
Type Select how OSPF calculates the cost associated with routing information from RIP.
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 RIP. 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.
Active Static Route Select this to advertise routes that were learned from static routes. The USG
advertises routes learned from static routes to all types of areas.
Type Select how OSPF calculates the cost associated with routing information from static
routes. 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 static routes. 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 USG.
Add Click this to create a new OSPF area.
Edit Double-click an entry or select it and click Edit to open a screen where you can
modify the entry’s settings.
Remove To remove an entry, select it and click Remove . The USG confirms you want to
remove it before doing so.
# 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.
Apply Click this button to save your changes to the USG.
Reset Click this button to return the screen to its last-saved settings.
Table 98
Configuration > Network > Routing Protocol > OSPF (continued)
LABEL DESCRIPTION