SMC Networks SMC6724L3 manual 256

COMMAND LINE INTERFACE

Command Usage

•An area ID uniquely defines an OSPF broadcast area. The area ID 0.0.0.0 indicates the OSPF backbone for an autonomous system. Each router must be connected to the backbone via a direct connection or a virtual link.

•Set the area ID to the same value for all routers on a network segment using the network mask to add one or more interfaces to an area.

•Be sure to include the primary address for an interface in the network area, otherwise, OSPF will not operate for any secondary addresses covered by the command.

•An interface can only be assigned to a single area. If an address range is overlapped in subsequent network area commands, the router will implement the address range for the area specified in first command, and ignore the overlapping ranges in subsequent commands. However, note that if a more specific address range is removed from an area, the interface belonging to that range may still remain active if a less specific address range covering that area has been specified.

•This router supports up to 64 OSPF router interfaces, and up to 16 total areas (either normal transit areas, stubs, or NSSAs).

Example

This example creates the backbone 0.0.0.0 covering class B addresses 10.1.x.x, and a normal transit area 10.2.9.0 covering the class C addresses 10.2.9.x.

Console(config-router)#network 10.1.0.0 255.255.0.0 area 0.0.0.0 Console(config-router)#network 10.2.9.0 255.255.255.0 area 10.1.0.0 Console(config-router)#

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