Installation ManualH3C SecPath F1000-S Firewall Chapter 8 Multifunctional Interface Modules8-8Category-5Direction of Direction ofRJ-45 signal twisted-pair RJ-45signalcable7 –– White (brown) –– 78 –– Brown –– 8Ethernet cables are divided into two categories: straight-through and crossover.z Straight-through cable: The sequences of the twisted pairs crimped in the RJ-45connectors at both ends are the same. It 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-45connectors at both ends are different. It connects a terminal device (PC or router)to another terminal device. You make crossover cables by yourself.Note:In making network cables, shielded cables are preferred for the sake ofelectromagnetic compatibility.8.4.6 Connecting the Interface CableStep 1: Plug one end of the cable to an Ethernet port of the FE module on the firewalland another end to the desired device. (For a PC or Router, use a straight-throughcable; for a HUB or LAN switch, use a crossover cable.)Step 2: Power up the firewall and check state of the LINK LED on the FE module. ONmeans a link is present. OFF means no link is present and you should check theconnection.Caution:Read the mark of a port carefully before you connect it; a wrong connection can causedamages to the interface module and even the device.
