Installation Manual
H3C SecPath F1000-A Firewall
Chapter 8 Multifunctional Interface Modules
8-11
Figure 8-15
Ethernet cable
II. Making an Ethernet cable
To make an Ethernet cable with RJ-45 connectors using a category-5 twisted-pair cable,
refer to Figure 8-16. A category-5 twisted-pair cable is composed of eight wires that are
identified and grouped by colors of the outer insulator. Usually a solid color wire and a
white/solid color wire are organized in pairs. But sometimes, wires are also paired by
color coded points.
Pair 1
Blue
White/blue
Pair 1
Orange
White/orange
Pair 1
Green
White/green
Pair 1
Brown
White/brown
e
Figure 8-16
Category-5 twisted-pair cabl
Ethernet cables are divided into two categories: straight-through and crossover.
z
Straight-through cable: The sequences of the twisted pairs crimped in the RJ-45
connectors at both ends are the same. The cable connects a terminal device (PC
or router) to a HUB or LAN Switch.
z
Crossover cable: The sequences of the twisted pairs crimped in the RJ-45
connectors at both ends are different. The cable connects a terminal device (PC or
router) to another terminal device. You can make crossover cables by yourself.
For the Ethernet cable pinout, see
Low-End and Mid-Range Series Routers Cable
Manual
.
8.5.6 Connecting the Interface Cable
Step 1: Plug one end of the cable to the GE port on the 1GBE/2GBE module on the
firewall and another end to the peer device. (For a PC or Router, use a crossover cable;
for a HUB or LAN Switch, use a straight-through cable.)
Step 2: Power up the firewall and check the status of the LED for the module on the
front panel of the firewall. ON means the module has passed the POST and can