972 Configuring OSPF and OSPFv3
ip ospf area 
area-id
 
[secondaries none]
Enables OSPFv2 on the interface and sets the area ID of 
an interface. This command supersedes the effects of 
network area command.
The 
area-id
 variable is the ID of the area (Range: IP 
address or decimal from 0 –4294967295)
Use the secondaries none keyword to prevent the interface 
from advertising its secondary addresses into the OSPFv2 
domain.
ip ospf priority 
number-
value
Set the OSPF priority for the interface. The 
number-value 
variable specifies the priority of an interface (Range: 0 to 
255). 
The default priority is 1, which is the highest router 
priority. A value of 0 indicates that the router is not 
eligible to become the designated router on this network.
ip ospf retransmit-
interval 
seconds
Set the OSPF retransmit interval for the interface. 
The 
seconds
 variable is the number of seconds between 
link-state advertisements for adjacencies belonging to this 
router interface. 
This value is also used when retransmitting database 
descriptions and link-state request packets. Valid values 
range from 0 to 3600 seconds (1 hour).
ip ospf hello-interval 
seconds
Set the OSPF hello interval for the interface. This 
parameter must be the same for all routers attached to a 
network. 
The 
seconds
 variable indicates the number of seconds to 
wait before sending Hello packets from the interface. 
(Range: 1–65535).
ip ospf dead-interval 
seconds
 
Set the OSPF dead interval for the interface. 
The 
seconds
 variable indicates the number of seconds a 
router waits to see a neighbor router's Hello packets before 
declaring that the router is down (Range: 1–65535). 
This parameter must be the same for all routers attached 
to a network. This value should be some multiple of the 
Hello Interval.
Command Purpose