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What is the smallest possible IP header size if the length of an IP datagram header can vary depending on the options used?

Asked by Spaz, Last updated: Mar 12, 2024

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1 Answer

John Smith

John Smith

John Smith
John Smith

Answered Sep 17, 2016

20 bytes

An IP header is usually 20 bytes in length, and this is its minimum size. The size of the header can vary, however, if a special options flag is used to send additional information such as a time stamp. An IP header can be as large as 60 bytes.
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