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Interface Card and Interface Module Manual
H3C MSR 20/30/50 Series Routers
Chapter 2 Smart Interface Cards
2-28
The following table describes the electrical interface LEDs on the left of the SIC-1GEC
panel.
Table 2-18
LEDs for the electrical interface on the left of the SIC-1GEC panel
LED
Description
LINK
ON means carrier signal is received;
OFF means no carrier signal is received;
Green: Data is being received and transmitted at a speed of 1000 Mbps.
Yellow: Data is being received and transmitted at a speed of 100/10
Mbps.
ACT
OFF: No data is being received and transmitted;
Blinking: Data is being received and transmitted.
Table 2-19
LEDs for the fiber interface on the right of the SIC-1GEC panel
LED
Description
LINK
ON means carrier signal is received;
OFF means no carrier signal is received;
Green: Data is being received and transmitted at a speed of 1000 Mbps;
Yellow: Fault.
ACT
OFF: No data is being received and transmitted;
Blinking: Data is being received and transmitted.
2.8.4 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 2-34
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.