>> Am looking at the headers from 802.3 and Ethernet (RFC 894). My >> question is: Off the wire how does one, libpcap for example, >> differenciate between 802.3 and Ethernet encapsulation? > >By looking at the type/length field. If it's <= 1500, it's 802.3; if it's >> 1500, it's Ethernet. (Actually, as I remember, according to the spec >there's a small set of values that are neither valid for 802.3 nor for >Ethernet, but I don't remember what the range is.)
that'd be 05dd to 05ff. 05dc is 1500, and 0600 is xerox ns idp. :) -- |-----< "CODE WARRIOR" >-----| [EMAIL PROTECTED] * "ah! i see you have the internet [EMAIL PROTECTED] (Andrew Brown) that goes *ping*!" [EMAIL PROTECTED] * "information is power -- share the wealth." - This is the TCPDUMP workers list. It is archived at http://www.tcpdump.org/lists/workers/index.html To unsubscribe use mailto:[EMAIL PROTECTED]
