4
LED Status
Description
LINK/ACT
Steady green
A 10000 Mbps link is present.
Flashing green
The port is sending or receiving data at 10000 Mbps.
Steady yellow
The link is faulty.
Off
No link is present.
Connection methods
For more information about supported transceiver modules and connection methods, see
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Connecting an interface module to the network
Connecting an Ethernet cable
Overview
You can connect a RIC-4GEE or a RIC-8GEE to the network through Ethernet cables as shown in
the following figure.
Figure 6 Ethernet cable
10/100 Mbps Ethernet uses category-5 twisted pair cables, and 1000 Mbps Ethernet uses
category-5 enhanced or category-6 twisted pair cables. Twisted pair cables include straight-through
cables and crossover cables.
Table 7 Ethernet cables
Cable type
Feature
Transmission
frequency
Applicable
scenario
Category-5
Common Ethernet cables
100 MHz
100Base-T and
10Base-T networks
Category-5e
•
Low attenuation and crosstalk
•
Higher attenuation to crosstalk ratio (ACR)
•
Less delay error and higher performance
100 MHz
1000 Mbps Ethernet
networks
Category-6
•
Improved performance on crosstalk and
return loss
•
Sufficient power sum ACR (PS-ACR) when
working at 200 MHz
•
Bandwidth twice than that of Cat-5e cables
1 MHz to 250
MHz
Applications
requiring a
transmission speed
of more than 1 Gbps
The 10/100 Mbps Ethernet uses two pairs of cables, orange/white, orange, green/white and green
cables, to transmit and receive data, while the 1000 Mbps Ethernet uses four pairs of cables to
transmit and receive data.
For the pinouts of common twisted pair cables, see the following tables. (A and B represent the two
ends of a cable, respectively.)
