H3C Technologies H3C MSR 50 - Manual (Page 25)

2-5
Figure 2-4 SIC-1FEA panel
The status description of the LEDs on SIC-1FEA panel is listed in the following table:
Table 2-4 Description of the LEDs on SIC-1FEA panel
LED Description
LINK
z
OFF means no link is present;
z
ON means a link is present.
ACT
z
OFF means no data is being transmitted or received;
z Blinking means data is being received or/and transmitted.
Interface cable
Typically, a 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 2-5 Ethernet cable
Ethernet cables fall into two categories: straight-through cables and crossover cables:
z
Straight-through cable: The wire sequences of the twisted pair cable crimped in the RJ-45
connectors at both ends are completely the same. It is used to connect terminal devices (such as
PCs, routers) to Hubs or LAN Switches.
z
Crossover cable: The wire sequences of twisted pair cable crimped in the RJ-45 connectors at both
ends are different. It can be used to connect two terminal devices (such as PCs and Routers). You
can such kind of cables by yourself if necessary.
For the pinouts, identification and making methods of these two kinds of network cables, see Low-End
and Mid-Range Series Routers Cable Manual .
Connecting the interface cable
If the SIC has been properly installed, follow these steps to connect the interface cable:
Step1 Connect the Ethernet port of SIC to a PC or router by using a crossover cable and to a Hub or LAN
switch by using a straight-through cable;
Step2 Check the status of LINK LED on the SIC-1FEA panel: ON means the link is connected and OFF
means the link is not connected. In the latter case, check the line.