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Interface Card and Interface Module Manual
H3C MSR 20/30/50 Series Routers
Chapter 2 Smart Interface Cards
2-3
2.1.4 Interface Cable
Normally, 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 cable
Ethernet 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 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
.
2.1.5 Connecting the Interface Cable
If the SIC has been properly installed, follow these steps to connect the interface cable:
Step 1: Connect the Ethernet port of SIC to a PC or router using a crossover cable and
to a Hub or LAN Switch using a straight-through cable;
Step 2: 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.
2.2 SIC-1SAE
2.2.1 Introduction
SIC-1SAE, 1-port enhanced high-speed synchronous/asynchronous serial interface
card, provides functions similar to SA, but its serial interfaces support more protocols,
such as RS449, X.21, and RS530.
2.2.2 Interface Attributes
The interface attributes of the SIC-1SAE are given in the following table: