3Com Router 5000 and Router 6000 v2.41Module Guide Chapter 2 Smart Interface Cards2-2being received or/and transmitted.2.1.2 Interface CableNormally, category-5 twisted pair cable is adopted to connect the 10BASE-T/100BASE-TX Ethernet interface to the Ethernet, as shown in the following figure:Figure 2-2 Ethernet cableEthernet cables fall into two categories: straight-through cables and crossover cables,specifically,z Straight-through cable: the wire sequences of the twisted pair cable crimped inthe RJ-45 connectors at both ends are completely the same. It is used to connectterminal devices (such as PCs, routers) to Hubs or LAN Switches.z Crossover cable: The wire sequences of twisted pair cable crimped in the RJ-45connectors at both ends are different. It can be used to connect two terminaldevices (such as PCs and Routers). You can such kind of cables by yourself ifnecessary.2.1.3 Connecting the Interface CableIf the SIC has been properly installed, follow these steps to connect the interfacecable:Step 1: Connect the Ethernet port of SIC to a PC or router using a crossover cable andto a Hub or LAN Switch using a straight-through cable;Step 2: Power on the Router and check the SLOT1 LED on its front panel: ON meansthat the SIC is operating normally and OFF means that the Power-On Self-Test (POST)of the SIC has failed. In the latter case, please contact your agent.Step 3: Check the status of LINK LED on the panel: ON means the link is connectedand OFF means the link is not connected. In the latter case, check the line.
