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Dell Configuration Guide for the S4048–ON System 9.14.2.6

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Assigning an OSPFv2 Area

After you enable OSPFv2, assign the interface to an OSPF area. Set up OSPF areas and enable OSPFv2 on an interface with the network command.

You must have at least one AS area: Area 0. This is the backbone area. If your OSPF network contains more than one area, configure a backbone area (Area ID 0.0.0.0). Any area besides Area 0 can have any number ID assigned to it.

The OSPFv2 process evaluates the network commands in the order they are configured. Assign the network address that is most explicit first to include all subnets of that address. For example, if you assign the network address 10.0.0.0 /8, you cannot assign the network address 10.1.0.0 /16 because it is already included in the first network address.

When configuring the network command, configure a network address and mask that is a superset of the IP subnet configured on the Layer-3 interface for OSPFv2 to use.

You can assign the area in the following step by a number or with an IP interface address.

Enable OSPFv2 on an interface and assign a network address range to a specific OSPF area.
CONFIG-ROUTER-OSPF-id mode
network ip-address mask area area-id
The IP Address Format is A.B.C.D/M.
The area ID range is from 0 to 65535 or A.B.C.D/M.

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