12 Sep
2004
12 Sep
'04
6:18 p.m.
On Sat, Sep 11, 2004 at 10:25:53AM -0700, Andrew Burgess wrote:
I dont think so, but IP (including UDP) does. There is a difference
between raw ethernet packets and UDP.
Ethernet has checksums to detect problems (maybe in;c forward correction),
but AFAICR it doesnt retransmit on its own, I would imagine that that is
why the commercial audio-over-ethernet systems work.
- Steve
In pratice
people dont really demand hard realtime and it will be OK, but
the maximum time taken to transmit a UDP packet is unbounded, it uses
exponential backoff IIRC.
That sounds like TCP. I think UDP is send and forget, if you want guaranteed
delivery or sequencing you need a higher protocol like TCP.
Or are you thinking of ethernet level collision detect and retransmit? Does
that go on forever (unbounded)?