American Fibertek CX-6p-PoE - Manual (Page 23)

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supplied address. The CX-6p-PoE will also notify any connected Pilot servers of the
alarm condition.
Ethernet Switch
The CX-6p-PoE includes an Ethernet switch with 4 10/100BaseT auto MDI/MDIX and
auto-negotiate ports(1-4) and 2 SFP ports(5 and 6).
Ports 1-4 auto negotiation supports 100BaseT or 10BaseT modes with either full on half
duplex. The auto negotiate function will establish a link at the highest speed and duplex
supported by the link partner.
Ports 1-4 auto MDI/MDIX allow the transmit and receive twisted pairs to be automatically
detected and configured as necessary to match the cable and link partner's
configuration. This allows use of “straight” or “crossover” cables to be used either type of
device. However, the PoE's polarity to the PD (or end device) should be taken into
consideration separately, as polarity of the PoE power is fixed.
The SFP ports operate at 1000BaseX mode. When an SFP link is connected to a link
partner, auto negotiation is attempted advertising 1000BaseX mode only, and if auto
negotiation fails, the link assumes 1000BaseX mode. The CxB-6PoE should function
properly with any SFP module which operates in 1000BaseX mode. Below is a table of
AFI SFP modules available along with compatibility information.
AFI number Media type Wavelength Fiber Mode Distance(meters) Compatible?
SFP-TX 1000BaseT Copper RJ45 N/A 100M Yes
1000BaseT
mode
SFP-FX 100Base-FX 850nm MM 2KM No
SFP-LX 1000Base-LX 1310nm SM 10KM Yes
SFP-LX-2 1000Base-LX 1310nm SM 2KM Yes
SFP-SX 1000Base-SX 850nm MM 550M Yes
SFP-ZX 1000Base-ZX 1550nm SM 80KM Yes
The Ethernet switch function provides routing each uni-cast packet to the appropriate
destination port, increasing the usable bandwidth within the network segment. The
Ethernet switch stores MAC addresses in its port database to keep track of which ports
devices are connected to.
The CxB6-PoE's internal switch device contain six independent 802.3 media access
controllers (MACs) ,and a high-speed, non-blocking four traffic class QoS switch fabric
that uses a dynamic queue limit architecture. The QoS architecture switches packets