Ethernet data section length must be 46-1500?

CodePudding user response:

Yes

Ethernet Ethernet frame format II:

Destination MAC source MAC type data FCS
6 bytes 46-1500 - byte 2 bytes 4 bytes

CodePudding user response:

Upstairs bosses terrible
To study the

CodePudding user response:

Learn about the Jumbo frame

CodePudding user response:

Objective - C - atomic must be thread-safe?

CodePudding user response:

The length of the frame range is 64-1518.
As for why the minimum is 64 byte, is said to be making the deal calculate the smallest time of a collision detection, this time under a "standard" physical context needs to be sent at least 64 byte "squeeze out"...
The head and tail, then 64 - frame part load at least 46 byte will be needed

CodePudding user response:

The definition of the length, but for the most general case definition, most efficient defined in the maximum length 1500, general card, you may by modifying the mtu value to change, for certain scenes, is perhaps the most large bag 1500 is not suitable for long, you can custom, but make sure the network card driver support, in fact, in general, you do not need to modify, not big or small the good
And this is the protocol layer, application layer has nothing to do with you, you send data, can exceed the length, the protocol layer will be unpacking, to the physical layer transmission