Re: How to convert Area ID in 32 bit format from decimal format
The method is straight forward, the same decimal to binary convertions..
Convert the decimal areaid in to binary.
Per definition OSPF ARea id is a 32 bit binary number.
Hence prepend the converted binary in the above step with Zeros "0".
Separate the resulting binary as 4 octets.
Convert the individual octets back to decimal. You will get the Ip address like notation of Area Id.
Here's an example from net..
For example, convert 400 decimal into binary (i.e. 110010000). The binary number needs to show 32 digits, representing the digits of the 4 octets in the IP type format. So, 110010000 binary = 00000000.00000000.0000001.10010000 as broken into octets. Finally, convert each octet into a decimal value. (e.g. 00000000.00000000.0000001.10010000 = 0.0.1.144). Therefore, 400 = 0.0.1.144
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