Using crossover cable
when using crossover cable, this is done from any (mdi-x) port of the switch (switch a) to any of the 10 mbps or 100 mbps (mdi-x) port of the other switch (switch b) or other devices (see figure 12).
switch a's led indicators for the respective connected ports are as follows:
◆100 m is on for 100base-tx, otherwise off.
◆link/act is on.
◆fdx/col depends on the connected switch or other device.