KBC Networks ESML6-FL2 - Manual (Page 8)

Ethernet Switch User Manual
Inst_manual_hw-ESML6-FL2-Rev_1010
Copyright © KBC Networks Ltd.
Page 8 of 20 www.kbcnetworks.com
2.5 Ethernet RJ45 Connections
2.5.1 RJ45 Ethernet Ports
The ESML6-FL2 offers 4, 10/100 Base T/TX RJ45 ports numbered 3, 5, 6 & 7 (see
figure 2.1). Each port is adaptive and supports auto MDI/MDI-X connection. They
can be connected by straight through or cross-over cables to terminal devices,
servers, hubs or other switches. Each switch supports IEEE802.3x so the optimum
transmission mode (either half-duplex or full-duplex) and data rate (either 10Mbps
or 100Mbps) will be selected automatically. The connected devices should support
this feature too however, if the connected devices are not adaptive, the port will
send at the correct rate but with default mode of half-duplex.
2.5.2 Uplink Redundant Ethernet RJ45 ports
The ESML6-FL2 has 2 uplink redundant RJ45 ports: ports 1 & 2 (see Figure 2.1).
These two ports can be set in either straight-through mode or redundant mode. In
the straight-through configuration they are set as normal Ethernet ports in
redundant mode they provide redundancy for a twisted pair network and have a
recovery time of less than 100ms.
2.6 Fiber Optic Connections
The ESML6-FL2 offers two pairs of uplink redundant 100Base-FX, full-duplex fiber
ports, ports 4 & 8 (see Figure 2.1) which can be either singlemode or multimode.
Each optical connector is a duplex SC. The interface should be used in a pair (Tx and
Rx), where the Tx interface is the optical transmitting terminal which connects to the
optical receiving terminal (Rx) of the remote device. The optical Rx is the receiving
terminal which connects to the transmitting terminal (Tx) of the same optical
interface of the remote device. The two pairs of uplink redundant fiber ports can be
used to form a fiber optic redundant ring network. If a system failure occurs, the
redundant recovery time of the ring network is less than 100ms.