Wednesday, October 20, 2021

MTU size issues, fragmentation, and jumbo frames

The maximum transmission unit (MTU) is the largest number of bytes an individual datagram can have without either being fragmented into smaller datagrams or being dropped along the path between its source and its destination.

For Ethernet frames—and many other types of packets—that number is 1500 bytes, and it generally meets the requirements of traffic that can cross the public internet intact.

So, if 2000-byte Ethernet packets arrive at a router, it will split their payloads in two and repackage them into two packets that are each smaller than 1500 bytes and so meet the MTU.

To read this article in full, please click here

Thanks to Scott Hogg (see source)

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