Disabling summary LSAs for a stub area

LSAs can be disabled for a stub area.

About this task

Procedure

Enter the configure terminal command to access global configuration mode.
```
device# configure terminal
```
Enter the router ospf command to enter OSPF router configuration mode and enable OSPFv2 on the device.
```
device(config)# router ospf
```
Enter the area stub command, specifying an area and a cost, followed by the no-summary parameter to set an additional cost on a specified stub area and prevent any Type 3 and Type 4 summary LSAs from being injected into the area.
```
device(config-router-ospf-vrf-default-vrf)# area 40 stub 99 no-summary
```

Example

The following example configures a stub area, specifying a cost of 99 and preventing any Type 3 and Type 4 summary LSAs from being injected into the area.

device# configure terminal
device(config)# router ospf
device(config-router-ospf-vrf-default-vrf)# area 40 stub 99 no-summary