Configuring an NSSA

OSPFv2 areas can be defined as NSSA areas with modifiable parameters.

  1. Enter the configure terminal command to access global configuration mode. 
    device# configure terminal
  2. Enter the router ospf command to enter OSPF router configuration mode and enable OSPFv2 on the device. 
    device(config)# router ospf
  3. Enter the area nssa command and specify an area address and a cost. 
    device(config-ospf-router)# area 10.1.1.1 nssa 1
    Area 10.1.1.1 is defined as an NSSA.

The following example configures OSPF area 10.1.1.1 as an NSSA. 

device# configure terminal
device(router ospf
device(config-ospf-router)# area 10.1.1.1 nssa 1
Parent topic: Not-So-Stubby Area (NSSA)