136 IP routing advanced configurationNN47928-500NN47928-500Variable definitionsThe following table describes the variables and values for adding an OSPF area.OSPF interface configuration parametersThe following section describes the parameters for configuration of the OSPF interface located atConfiguration, IP Routing, OSPF, Interface tab.Variable definitionsThe following table describes the variables and values for configuring an OSPF interface.Variable ValueArea ID Type the area identifier. The area ID in OSPF has the same format as anIP address but defines a summarization point for Link StateAdvertisements (LSAs).You may configure up to five areas.Type Select the area type for the specified area ID. Select one of the followingoptions:• Normal – Configures the area type as Normal. All the external LinkState Advertisements (LSA) (Type 5 LSA) can be flooded through thenormal area.• Stub – Configures the area type as Stub. External LSAs cannot beflooded into a stub area (a default route is used to reach the externalroutes).• NSSA – Configures the area type as Not-So-Stubby-Area (NSSA).Only a limited number of Type 5 external LSAs are translated intoType 7 LSAs and flooded into the NSSA.The default value is Normal.Send Summary Routers Specifies the Send Summary Routers status. This controls the import ofsummary LSAs into the stub area but has no effect on other areas.If you select Yes, the router summarizes and propagates summary LSAs.If you select No, the router does not summarize nor propagate summaryLSAs.The default value is No.NSSA Translator StabilityInterval Type the NSSA Translator Stability Interval.The range is 0 to 2147483647.The default value is 40.Variable ValueInterface Select the VLAN interface index.Area ID A 32-bit integer uniquely identifying the area to which the interfaceconnects.The area ID 0.0.0.0 is used for the backbone area.The default value is 0.0.0.0.
