Category:Cisco Systems -> Routing and Switching
Method 1: Filter the inter-area routes generated at ABR
router(config)# router ospf 1
router(config-router)# area <area-id> filter-list prefix <prefix-name> <in | out>
in — filtering into the defined area-id
out — filtering out of the defined area-id
Method 2: Filter the inter-area routes at ABR
router(config)# router ospf 1
router(config-router)# area <area-id> range <address> <mask> [advertise|not-advertise] [cost <cost>]
area-id - area which contains the components of the network range
By privilege15