RE: WG ACTION: 2 weeks to discuss [LL62] Do not space probes randomly

>BTW, are we assuming the link layer takes care of collisions or should
>there be some explicit provision for retransmitting if one of the probes
>suffers a collision?

The reason for having three probes is to mitigate the effects of 
undetected loss.

Most links like 802.11 and 802.3 have some low-level loss detection to 
mask some (but not all) losses.

If the link could guarantee to report or recover from *all* losses, there 
wouldn't be any undetected loss, so one probe would be enough.

Stuart Cheshire <[email protected]>
 * Wizard Without Portfolio, Apple Computer, Inc.
 * www.stuartcheshire.org