H3C SecPath F100-X-G3 Installation Manual page 68

Figure1-3 RJ-45 connector pinout
PIN #8
PIN #1
NOTE:
The RJ-45 Ethernet ports of the firewall use category 5 or higher Ethernet twisted pair cables for
connection.
EIA/TIA cabling specifications define two standards, 568A and 568B, for cable pinouts.
•
Standard 568A—pin 1: white/green stripe, pin 2: green solid, pin 3: white/orange stripe, pin 4:
blue solid, pin 5: white/blue stripe, pin 6: orange solid, pin 7: white/brown stripe, pin 8: brown
solid.
•
Standard 568B—pin 1: white/orange stripe, pin 2: orange solid, pin 3: white/green stripe, pin 4:
blue solid, pin 5: white/blue stripe, pin 6: green solid, pin 7: white/brown stripe, pin 8: brown
solid.
Ethernet twisted pair cables can be classified into straight-through and crossover cables based on
their pinouts.
•
Straight-through—The pinouts at both ends are T568B compliant, as shown in Figure1-4.
•
Crossover—The pinouts are T568B compliant at one end and T568A compliant at the other
end, as shown in Figure1-5.
Figure1-4 Straight-through cable
Straight-through cable
1 white/orange
orange
2
white/green
3
4 blue
5 white/blue
6 green
7 white/brown
8
brown
1 white/orange
2 orange
white/green
3
4 blue
5
white/blue
green
6
white/brown
7
8
brown
1-3