Advantech EKI-7657C Chapter 1 Overview

EKI-7657C _Manual_ed1 2

Chapter 1 Overview

To create reliability in your network, the EKI-7657C comes equipped with a proprietary

redundant network protocol—X-Ring that was developed by Advantech, which

provides users with an easy way to establish a redundant Ethernet network with ultra

high-speed recovery time less than 10 ms.

Aside from 7 x 10/100Base-TX fast Ethernet ports, the EKI-7657C comes equipped

with 3 combo 10/100/1000 Mbps RJ-45 copper ports or mini-GBIC expansion ports.

Traditional RJ-45 ports can be used for uplinking wide-band paths in short distance (<

100 m), or the appropriate replaceable SFP module can be used for the application of

wideband uploading and long distance transmissions to fit the field request flexibility.

Also, the long MTBF (Mean Time Between Failures) ensures that the EKI-7657C will

continue to operate until a Gigabit network infrastructure has been established, without

requiring any extra upgrade costs.

1.1.1 The SFP Advantage

The EKI-7657C’s three SFP fiber slots provide a lot of flexibility when planning and

implementing a network. The slots can accept any SFP-type fiber module and these

modules are designed for transmitting over distances of either 500m (multi-mode),

10km, 30km, 50km, 70km or 110km (single-mode)—and the slots support SFP

modules for WDM single-fiber transmissions. This means that you can easily change

the transmission mode and distance of the switch by simply pulling out the SFP

module and plugging in a different module. The SFP modules are hot-swappable and

plug-and-play! Also, the fact that the switch has three of these slots, means that the

network manager can, for example, have one 10km module in one slot and one 110km

in the other.

1.1.2 High-Speed Transmissions

The EKI-7657C includes a switch controller that can automatically sense transmission

speeds (10/100 Mbps). The RJ-45 interface can also be auto-detected, so MDI or MDI-

X is automatically selected and a crossover cable is not required. All Ethernet ports

have memory buffers that support the store-and-forward mechanism. This assures that

data is properly transmitted.

1.1.3 Dual Power Input

To reduce the risk of power failure, the EKI-7657C provides +12 ~ 48 VDC dual power

inputs. If there is power failure, EKI-7657C will automatically switch to the secondary

power input.

1.1.4 DIDO

EKI-7657C provides 2 digital inputs and 2 digital outputs. When disconnection of the

specific port was detected, the digital output will activate the connected warning device

to alarm the user. As for the digital inputs, they can integrate sensors into the system

to issue alarms by sending Syslog, SMTP, or SNMP Trap.