HP 6125G HP 6125G & 6125G/XG Blade Switches Layer 3 - IP Routing Confi - Page 79

NOTE: Virtual links cannot transit totally stub areas. Configuring an NSSA area A stub area cannot redistribute routes. Configure the area as an NSSA area to allow for route redistribution by keeping other stub area characteristics. To configure an NSSA area: Step Command Remarks 1. Enter system view. system-view N/A 2. Enter OSPF view. ospf [ process-id | router-id router-id | vpn-instance vpn-instance-name ] * N/A 3. Enter area view. area area-id N/A 4. Configure the area as an NSSA area. nssa [ default-route-advertise | no-import-route | no-summary | translate-always | translator-stability-interval value ] * Not configured by default. You must use the nssa command on all the routers attached to an NSSA area. 5. Specify a cost for the default route advertised to the default-cost cost NSSA area. Optional. 1 by default. The default-cost command is available only on the ABR/ASBR of an NSSA area. Configuring a virtual link Non-backbone areas exchange routing information via the backbone area. Connectivity between the backbone and non-backbone areas and within the backbone must be maintained. If the required physical links are not available for this connectivity maintenance, you can configure virtual links to resolve it. To configure a virtual link: Step 1. Enter system view. 2. Enter OSPF view. 3. Enter area view. Command system-view ospf [ process-id | router-id router-id | vpn-instance vpn-instance-name ] * area area-id Remarks N/A N/A N/A 69