H3C Technologies H3C SecPath M9000 Series - Manual (Page 80)

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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 Figure 42 .
• Crossover—The pinouts at one end comply with standard 568B, and those at the other end comply
with standard 568A, as shown in
Figure 43 .
Figure 42 Straight-through cable
Figure 43 Crossover cable