Frame size !

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What’s the maximum frame size of Gigabit Ethernet?

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Posted by WebUser Hossein Lotfi

[Latchum Naidu]

Hi,

Gigabit Ethernet maintains the minimum and maximum frame sizes of Ethernet. Since, Gigabit Ethernet is 10 times faster than Fast Ethernet, to maintain the same slot size, maximum cable length would have to be reduced to about 10 meters, which is not very useful. Instead, Gigabit Ethernet uses a bigger slot size of 512 bytes. To maintain compatibility with Ethernet, the minimum frame size is not increased, but the "carrier event" is extended. If the frame is shorter than 512 bytes, then it is padded with extension symbols. These are special symbols, which cannot occur in the payload. This process is called Carrier Extension.

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Regards,
Naidu.

[flokki123]

hi,

the frame size is defined by the ethernet standard and is independent of the speed.

the min. frame size of ethernet is 64bytes and the max. is 1518(1522 with a vlan tag).

every frame bigger than 1522 is considered a jumbo frame.

regards,

florian

[Joseph W. Doherty]

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If the equipment supports "jumbo" frames, usually about 9 KB.