1-21
Table 1-24
Crossover cable connector pinouts
RJ-45
Signal direction
Category-5
twisted pair
Signal direction
RJ-45
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
z
You can refer to the tables above when distinguishing between and preparing these two types of
Ethernet cables.
z
When preparing Ethernet cables, follow the chromatogram given in the table to arrange the wires.
Otherwise, communication quality will be affected even if the two devices at both ends can
communicate.
z
When preparing Ethernet cables, use shielded cables preferentially for electromagnetic
compatibility.
Fiber connecting optical Ethernet interfaces
You can use a single-mode or multimode fiber to connect a 1000 Mbps optical Ethernet interface and
select proper fibers for the installed 1000Base–X SFP optical modules (GE SFP transceivers for short).
Because the optical interfaces on these SFP transceivers use LC optical connectors, you must use
fibers with LC optical connectors. All SFP transceivers are hot-swappable.
z
No SFP transceivers are shipped with the F5000-A5.
z
Use only the SFP transceivers provided by H3C. The device cannot recognize other SFP
transceivers.
z
For the connection of electrical Ethernet cables and optical fibers, refer to the section talking about
connecting Ethernet cables in Chapter 4 “Installing the Firewall.”
