Autonegotiation
With the autonegotiation mechanism, repeaters and end devices can automatically determine
the transmission speed and the transmission mode of the partner interface. This makes it
possible to configure different devices automatically. Two components connected to a link
segment can exchange information about the data transfer and can adapt their settings to each
other. The mode with the highest possible speed is set.
Note
The SCALANCE X204RNA operates permanently in autonegotiation mode and can therefore
be connected to other devices that either also use the autonegotiation mode or the "100 Mbps
mode FD (full duplex)".
Note
The SCALANCE X204RNA is a plug-and-play device that does not require settings to be made
for commissioning.
MDI / MDI-X autocrossover function
The advantage of the MDI /MDI-X autocrossover function is that straight-through cables can
be used throughout and crossover Ethernet cables are unnecessary. This prevents
malfunctions resulting from mismatching send and receive wires. This makes installation much
easier for the user.
The SCALANCE X204RNA supports the MDI / MDI-X autocrossover function.
Note
Please note that the direct connection of two ports on the switch or accidental connection over
several switches causes an illegal loop. Such a loop can lead to network overload and network
failures.
Transmission speed
The transmission speed of the Fast Ethernet ports is 100 Mbps full duplex.
Descriptions of the products
4.4 SCALANCE X204RNA
SCALANCE X-200RNA
36
Operating Instructions, 10/2016, C79000-G8976-C342-04
Summary of Contents for SCALANCE X-200RNA
Page 6: ...Table of contents SCALANCE X 200RNA 6 Operating Instructions 10 2016 C79000 G8976 C342 04 ...
Page 12: ...Introduction SCALANCE X 200RNA 12 Operating Instructions 10 2016 C79000 G8976 C342 04 ...
Page 16: ...Safety notices SCALANCE X 200RNA 16 Operating Instructions 10 2016 C79000 G8976 C342 04 ...