OSPF Area Conversion

vSphere NSX supports OSPF as well as BGP and Static routing. When configuring OSPF, you will need to specify the OSPF area number in decimal format. When working with OSPF routing configurations that use dotted decimal format, the following formula will convert dotted decimal to decimal. Likely your favorite subnet calculator also supports OSPF area number conversions! The formula you can paste into a cell is: =(((C5*256)+D5)*256+E5)*256+F5

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