Table 6-80 Pin assignments of a crossover cable
X1 (RJ45) Wire Color X2 (RJ45)
1 White and orange 3
2 Orange 6
3 White and green 1
4 Blue 4
5 White and blue 5
6 Green 2
7 White and brown 7
8 Brown 8
Connection
A straight-through cable can connect devices at different network layers in the following
scenarios:
l Connect a switch or hub to an industrial switching router.
l Connect a computer (server or workstation) to a switch or hub.
l Connect a switch to an upper-layer switch through an uplink interface.
A crossover cable can connect devices at the same network layer in the following scenarios:
l Connect a computer to an industrial switching router.
l Connect two switches at the same layer.
l Connect two hubs.
l Connect two computers.
l Connect two industrial switching routers.
l Connect an Ethernet interface of an ADSL modem to the network interface of a
computer.
NOTE
Most network devices support auto-negotiation on their interfaces. After auto-negotiation is enabled, the
local and remote interfaces can automatically negotiate about communication parameters. In this case,
the two interfaces can be connected by either a straight-through cable or a crossover cable.
Ordering Information
None
6.7 RS232 Cable
Huawei
AR500&AR510&AR531&AR550&1500&AR2500
Industrial Switch Routers
Hardware Description
6 Cables
Issue 10 (2019-03-06) Copyright © Huawei Technologies Co., Ltd. 707
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