State the concept of fragmentation in IPv4.

State the concept of fragmentation in IPv4. 
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1 Answer

Answer :

Fragmentation: When the maximum size of datagram is greater than maximum size of data that can be held a frame then the network layer divides the datagram received from x-port layer into fragments.

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Fragmentation is the division of a IP datagram into smaller units. After fragmentation, each fragment will have its own header with few fields changed and few fields remaining same.

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In fragmentation, a datagram is divided into smaller units. Most of the fields of the original header are copied into the fragment header. The three fields Flags, Fragmentation offset and Total length are altered.
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