private ethernet protocol number

Check out IEEE 802a-2003 (the Overview and Architecture Standard for the IEEE 802 family). It defines methods for private and experimental Ethernet protocol type usage. It is available for free download at:

-- Rich Seifert Networks and Communications Consulting 21885 Bear Creek Way (408) 395-5700 Los Gatos, CA 95033 (408) 228-0803 FAX

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We had a similar need, and ended up buying an "official" protocol number. The process was surprisingly painless.

I suggest that you stick to a single protocol number instead of a range of protocol numbers (and use a subsequent field in the frame to carry the extra information). If your idea becomes successful, you will want to make the protocol number official, and it's somewhat harder to buy a range than just a single number. The entire space is less than 2^16, so they don't want to waste it.

Regards, Allan

(snip)

I suppose you don't have any trouble remembering it.

The identifier at the beginning of Java class files is

X'CAFEBABE' also easy to remember.

-- glen

Bonjour Allan,

This strong Ethertype is not in the list from IANA updated 2008-03-19

Best regards, Michelot

But it's listed here:

Christof

Bonjour Christof,

Glurps! interresting.

and I don't know why there are 2 lists. Have you an idea?

best reagrds, Michelot

There are a lot more than 2 lists. People like to make lists.

There is only one official list: the IEEE one, which has the complete set of official numbers.

The IANA one contains numbers that are relevant to the IANA. It would be a mistake to consider the IANA list as definitive. However, the IANA are a pragmatic bunch, and it is quite possible for (unofficial) numbers that are used in practice to exist in the IANA list that aren't in the IEEE list. FC0F identifies a proprietory protocol which is not described in any IETF RFC, and isn't really visible to the IANA.

Regards, Allan

Bonsoir Allan,

Thanks for these words, best regards, Michelot