[SI-LIST] Re: GbE LLC/SNAP

I found my answer:  probably all old frame formats are still being used, and 
the newest
Ethernet spec is backwards compatible with most of them.
And due to the desire to tunnel through existing networks, or create new 
kinds of networks,
the number of combined, or new packet types is always increasing.
The world of Gigabit ethernet protocols is so wide it almost makes the SI 
part look easy
(at least until one mentions PAM4 modulation....)

----- Original Message ----- 
From: "N. Paul Taddonio" <paul.taddonio@xxxxxxxxxxxxxx>
To: <si-list@xxxxxxxxxxxxx>
Sent: Wednesday, May 23, 2007 10:49 AM
Subject: [SI-LIST] GbE LLC/SNAP


I apologise for being a bit off-topic, but I don't know where else to ask 
questions about current implementations
of Gigabit Ethernet.
Does anybody know of an email reflector for current 1 Gig and 10 Gig 
Ethernet developers?

I am working with Gigabit Ethernet serial links and I am wondering about the 
variety of ethernet packet formats.
The latest version of IEEE 802.3 seems to have dropped support for the 
802.2/802 LLC/SNAP frame format,
and the LLC/SNAP standards have elapsed (have not been updated in over 5 
years).

Can anyone comment on this, can I assume that new developement work 
therefore has no LLC/SNAP packets?

Or do old ethernet frame formats never die?

Sincerely,

Paul Taddonio



Lead Product Design Engineer

FuturePlus Systems



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