Table 9. Switching Modes - Olicom CrossFire 8600 Manual To Operations

34
Three Switching Modes
Feature
Cut-Through
Store and Forward
Auto
(Adaptive
Cut-Through)

Table 9. Switching Modes

CrossFire 8600/8605 Token-Ring Switches v. 1.2, P/N: 710001641
Function
Switches with
minimum and
constant latency,
approximately 35 µs
Each packet is
forwarded only after
the entire packet has
been received by the
switch. This is used
for data transfer
between LAN
segments of different
speeds or for LAN
segments with a high
error rate.
Cut-through
switching that checks
for error packets. If a
port's errors exceed a
user-defined threshold
then the port switches
to store and forward.
Benefit
Lowest possible switch-latency,
which means optimal response
time for end-users.
Does not propagate errors to
other segments.
Same speed as cut-through
switching, but with built-in
adaptation to errors which
means that bandwidth is
effectively preserved
Switch Theory of Operation