Page permalink Always use the following permalink when referencing this page. It will remain unchanged in future help versions. https://docs.sophos.com/nsg/sophos-firewall/19.0/Help/en-us/webhelp/onlinehelp/index.html?contextId=OSPFAreaEdit Your browser doesn’t support copying the link to the clipboard. Please copy it manually. Add OSPF areas To add an OSPF area, do as follows: Go to Routing > OSPF and click Add in the Areas section. Enter the OSPF area details. Name Description Area Specify an IP address for the area. Type Select the type of OSPF area from the options available. The available options are normal, stub, stub no-summary, NSSA, and NSSA no-summary. Virtual links (Available only if the Normal area type is selected) Specify a virtual link for an area that does not have a physical connection to connect to the backbone area. Click Add to add virtual links. Authentication Select the type of authentication from the following options: Text, MD5. Area cost (not available for the Normal area type) Specify the area cost. Acceptable range: 0 to 16777215 Click Save. Was this page helpful? Thank you for your feedback Thank you for your feedback. Help us improve this page by giving us more information.