On Mon, Nov 03, 2003 at 08:46:53PM +1100, Ronnie Sahlberg wrote: > fragment: > For connectionless protocols, a single layer 3+ unit that form a logical PDU > in that layer only when combined with multiple other lower layer units.
...unless your connectionless protocol is called "OSI CLNP" or "ISO 8473", in which case it's called a "segment". :-) > segment: > For connectionoriented transports, a portion of or an entire higher layer > PDU that is carried in a single frame. ...or lower-layer protocol packet (e.g., a COTP segment inside a fragmented CLNP packet). > pdu: > a complete layer 5+ protocol unit. Actually, it's just "Protocol Data Unit", and I think can be used for *any* layer.
