Path: utzoo!attcan!uunet!know!zaphod.mps.ohio-state.edu!usc!apple!aux.support.apple.com!winders
From: winders@aux.support.apple.com (Scott Winders)
Newsgroups: comp.protocols.appletalk
Subject: Re: Ethertalk Phase II header
Message-ID: <45020@apple.Apple.COM>
Date: 21 Sep 90 18:01:26 GMT
Sender: nntp@Apple.COM
Distribution: na
Organization: Apple Computer, Inc.
Lines: 26
References:<1410@alfred.tegra.COM> <2050@van-bc.wimsey.bc.ca>

EtherTalk 2.x (802.3) Frame

802.3 Destination         6 bytes
802.3 Source              6 bytes
802.2 LLC Length          2 bytes
802.2 LLC Header            
  802.2 LLC DSAP          1 bytes (always $AA (SNAP SAP) for EtherTalk 2.x)
  802.2 LLC SSAP          1 bytes (always $AA (SNAP SAP) for EtherTalk 2.x)
  802.2 LLC Control       1 bytes (always $03)
SNAP Header               5 bytes (always $080007809B for EtherTalk 2.x)
DDP Header               13 bytes
AppleTalk Data           ?? bytes (586 bytes maximum)
Padding (if needed)      ?? bytes
                    ---------------
                    60 to 621 bytes

DSAP - Destination Service Access Point
SSAP - Source Service Access Point
The SNAP SAP is defined as $AA

A SNAP address has been defined by the IEEE for AARP packets.
The SNAP number is $00000080F3.

Scott Winders
internet: winders@aux.support.apple.com
AppleLink: winders.s@applelink.apple.com