Scalance X204Rna Eec Sfp Interface - Siemens SCALANCE X204RNA Operating Instructions Manual

Autonegotiation
Autonegotiation means the automatic detection of the functionality of the port at the opposite
end. Using autonegotiation, repeaters or end devices can detect the functionality available at
the port of a partner device allowing automatic configuration of different types of device. With
autonegotiation, two components connected to a link segment can exchange parameters
and set themselves to match the supported communication functionality.
Note
The SCALANCE X204RNA EEC 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 EEC is a plug-and-play device that does not require settings to
be made for commissioning.
MDI / MDIX autocrossover function
The advantage of the MDI / MDIX autocrossover function is that straight-through cables can
be used throughout and external Ethernet crossover cables are unnecessary. This prevents
malfunctions resulting from mismatching send and receive wires. This makes installation
much easier for the user.
The SCALANCE X204RNA EEC supports the MDI / MDIX 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.
4.5.3

SCALANCE X204RNA EEC SFP interface

SCALANCE X204RNA EEC SFP interface
The SFF slots are used to insert suitable SFP modules.
Here the use of transceivers with an optical interface is particularly practical.
SCALANCE X204RNA SCALANCE X204RNA EEC
Operating Instructions, , C79000-G8976-C294-03
(PRP)
Product characteristics
4.5 SCALANCE X204RNA EEC
23