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xStack DES-3800 Series Layer 3 Stackable Fast Ethernet Managed Switch
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OSPF Area Aggregation Settings
Area Aggregation allows all of the routing information that may be contained within an area to be aggregated into a summary
LSDB advertisement of just the network address and subnet mask. This allows for a reduction in the volume of LSDB
advertisement traffic as well as a reduction in the memory overhead in the Switch used to maintain routing tables. Click Layer 3
Features > OSPF > OSPF Area Aggregation Settings link to view the current settings. There are no aggregation settings
configured by default, so there will not be any listed the first accessing the menu. To add a new OSPF Area Aggregation setting,
click the Add button. A new menu (pictured below) appears. To change an existing configuration, click on the hyperlinked Area
ID for the set you want to change. The menu to modify an existing configuration is the same as the menu used to add a new one.
To eliminate an existing configuration, click the
in the Delete column for the configuration being removed.
Figure 8- 38. OSPF Area Aggregation Settings
Use the menu below to add a new or edit an OSPF Area Aggregation setting.
Figure 8- 39. OSPF Area Aggregation Settings - Add
Specify the OSPF aggregation settings and click the Apply button to add or change the settings. The new settings will appear
listed in the OSPF Area Aggregation Settings table. To view the table, click the Show All OSPF Aggregation Entries
link to
return to the previous window.
Use the following parameters to configure the following settings for OSPF Area Aggregation Settings:
Parameter Description
Area ID
Allows the entry the OSPF Area ID for which the routing information will be aggregated. This
Area ID must be previously defined on the Switch.
Network Number
Sometimes called the Network Address. The 32-bit number in the form of an IP address that
uniquely identifies the network that corresponds to the OSPF Area above.
Network Mask
The corresponding network mask for the Network Number specified above.
LSDB Type
Use the drop-down menu to set the type of address aggregation.
Choose Summary to specify that a summary Link State Database will be used.
Choose NSSA to specify that a Not So Stubby Area Database will be used.