User Documentation

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Auto-Negotiation and Speed Sensing
All of the RJ45 Ethernet ports independently support auto-negotiation for
speeds in the 10BaseT and 100BaseTX modes, with operation according to the
IEEE 802.3u standard. This means that some nodes could be operating at 10
Mbps, while at the same time other nodes are operating at 100 Mbps.
Auto-negotiation takes place when an RJ45 cable connection is made, and then
each time a LINK is enabled. An IE-SW-VL09-Switch advertises its capability
for using either 10 Mbps or 100 Mbps transmission speeds, with the device at
the other end of the cable expected to similarly advertise. Depending on what
type of device is connected, this will result in agreement to operate at a speed
of either 10 Mbps or 100 Mbps.
If an RJ45 Ethernet port is connected to a non-negotiating device, the default
values 10 Mbps speed and half-duplex mode will be setup, as required by the
IEEE 802.3u standard.
Specifications
Technology
Standards
IEEE802.3, 802.3u, 802.3x
Forward and Filtering
Rate
148810 pps
Packet Buffer Memory
256 KB
Processing Type
Store and Forward, with IEEE802.3x full duplex,
back pressure flow control
Address Table Size
1K uni-cast addresses
Latency
Less than 5 μs
Interface
RJ45 Ports
10/100BaseT(X) auto negotiation speed, F/H duplex
mode, and auto MDI/MDI-X connection
Fiber Ports
100BaseFX ports (SC/ST connector)
LED Indicators
Power, Fault, 10/100
DIP Switch
Port break alarm mask
Alarm Contact
One relay output with current carrying capacity of
1A @ 24 VDC
Optical Fiber
Multi mode
Distance, km
5
Wavelength, nm
1300
Min. TX Output, dBm
-20
Max. TX Output, dBm
-14
Sensitivity, dBm
-34 to -30
Recommended Diameter
(Core/Cladding) μm
50/125
(1 dB/km, 800 MHz  km)