Configuring OSPF and OSPFv3 977
Configuring OSPF Area Range Settings
Beginning in Privileged EXEC mode, use the following commands to 
configure an OSPF area range.
area 
area-id
 virtual-link 
neighbor-id
 transmit-
delay 
seconds
 
Set the OSPF Transit Delay for the interface.
The 
seconds
 variable is the number of seconds to 
increment the age of the LSA before sending, based on 
the estimated time it takes to transmit from the 
interface. (Range: 0–3600)
exit Exit to Global Config mode.
exit Exit to Privileged EXEC mode.
show ip ospf virtual-link 
brief
View summary information about all virtual links 
configured on the switch.
Command Purpose
configure Enter global configuration mode.
router ospf Enter OSPF configuration mode.
area 
area-id
 range 
ip-address mask
 
{summarylink | 
nssaexternallink} 
[advertise 
|not-advertise]
Configure a summary prefix for routes learned in a given area. 
•
area-id
 — Identifies the OSPF NSSA to configure. (Range: IP 
address or decimal from 0–4294967295)
•
ip-address
 — IP address.
•
subnet-mask
 — Subnet mask associated with IP address.
•
summarylink
 — Specifies a summary link LSDB type.
•
nssaexternallink
 — Specifies an NSSA external link LSDB 
type.
•
advertise
 — Advertisement of the area range.
•
not-advertise
 — Suppresses advertisement of the area range.
exit Exit to Global Config mode.
exit Exit to Privileged EXEC mode.
show ip ospf range 
area-id
View information about the area ranges for the specified 
area-id
.
Command Purpose