H3C S12500R-2L Installation Manual page 72

NOTE:
Connect 10-Gigabit RJ-45 ports on the device by using category 6A or category 7 twisted pair
cables. Connect other RJ-45 ports on the device by using category 5 or above twisted pair cables.
Based on pinouts
Ethernet twisted pair cables can be classified into straight through and crossover cables based on
their pinouts.
•
Straight-through—The pinouts at both ends comply with standard 568B, as shown in
Figure1-3.
•
Crossover—The pinouts at one end comply with standard 568B, and those at the other end
comply with standard 568A, as shown in Figure1-4.
Figure1-3 Straight-through cable
Straight-through cable
1 white/orange
orange
2
white/green
3
4 blue
5
white/blue
green
6
7 white/brown
8
brown
1 white/orange
2 orange
white/green
3
blue
4
5 white/blue
6 green
white/brown
7
8
brown
1-3