Installation Manual
H3C SecPath F1000-E Firewall
Chapter 1 Product Overview
1-18
Ethernet cables fall into the following two categories:
z
Standard cable: Also called straight-through cable. At both ends of a standard
cable, wires are crimped in the RJ-45 connectors in the same sequence. A
straight-through cable is used to connect a terminal (for example, a PC or a
firewall) to a hub or LAN Switch. The cables delivered with the firewall are
straight-through cables.
z
Crossover cable: At both ends of a crossover cable, wires are crimped in the
RJ-45 connectors in different sequences. A crossover cable is used to connect a
terminal (for example, a PC or a firewall) to another terminal. You can make
crossover cables by yourself as needed.
Table 1-16
Straight-through cable pinouts
Pin
Signal
Category-5
twisted pair
Signal
direction
Pin
1 TX+
White
(Orange)
Æ
1
2 TX–
Orange
Æ
2
3 RX+
White
(Green)
Å
3
4 — Blue
— 4
5 — White
(Blue)
— 5
6 RX–
Green
Å
6
7 — White
(Brown)
— 7
8 — Brown
— 8
Table 1-17
Crossover cable pinouts
Pin
Signal
direction
Category-5
twisted pair
Signal
direction
Pin
1 TX+
White
(Orange)
Æ
3
2 TX–
Orange
Æ
6
3 RX+
White
(Green)
Å
1
4 — Blue
— 4
5 — White
(Blue)
— 5
6 RX–
Green
Å
2
7 — White
(Brown)
— 7
8 — Brown
— 8
