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Jumbo ethernet frame header and super jumbo frame

Very large frames can be used with some Ethernet cards. One case is 9k frames or a jumbo frame, and the other is a super jumbo frame (as I know, up to 64k).

What is the frame format used for such huge packages?

As I know, two formats are widely used for regular frames:

Preamble    Start_byte  dest_mac    src_mac     Ethertype/length    Payload     CRC     Interframe gap
10101010x7  10101011    6 bytes     6 bytes     2 bytes         46–1500 bytes   4 bytes 12 bytes

In one case, ethertype is used for length, and in the second for packet type. If this field is <0x0600 (decimal 1536 bytes), this is the length; if> = 0x0600 is a type.

Thus, it is not possible to store 9000 in this field as a length. How are jumbo and super jumbo frames stored?

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, jumbos, . , Ethertype . Ethertype ; . IANA :

http://www.iana.org/assignments/ethernet-numbers

:

Ethertype         Exp. Ethernet   Description           References
----------------  --------------  --------------------  ----------
  2054   0806        -      -     ARP                       [IANA]
  2048   0800        513   1001   Internet IP (IPv4)        [IANA]
         86DD                     IPv6                      [IANA]

:

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