User`s manual

CLARION M10 SERIES STANDARDS
M10 SERIES USER’S MANUAL PAGE 34
1. Invoke flow control (default for the M10 connected to an AUI port),
by using the COLLISION signal to force the Ethernet card into its
exponential back-off algorithm. Because there are eight UPLOAD
buffers, this flow control can always maximize RF throughput even
though the attached device may delay re-offering of frames.
2. Ignore UPLOAD frames when no UPLOAD buffer is available,
this may be required when the M10 is connected to multiple
computers (e.g., via a hub) which might be disrupted by excessive
collision indications. However, ignored frames will incur a large
delay for retransmission by the level-4 transport protocol (TCP,
IPX), or may not be re-offered at all for datagrams (UDP, SPX).
Although using the COLLISION signal for flow control is the
default, the user must make an informed selection between these two
possibilities based upon network topology, acceptable link behavior,
and the requirements of the application software.