Cabling Copper Ports - Allied Telesis AlliedWare Plus Installation Manual

Chapter 14: Cabling the Networking Ports

Cabling Copper Ports

186
Here are the guidelines to cabling the 10/100/1000Base-T copper ports:
The cable specifications for the ports are listed in "Cable

Requirements" on page 32.
The connectors on the cables should fit snugly into the ports, and

the tabs should lock the connectors into place.
The default setting for the wiring configurations is auto-MDI/MDI-X.

The default setting is appropriate for switch ports that are
connected to 10/100Base-TX network devices that also support
auto-MDI/MDI-X.
The default auto-MDI/MDI-X setting is not appropriate for switch

ports that are connected to 10/100Base-TX network devices that
do not support auto-MDI/MDI-X and have a fixed wiring
configuration. For switch ports connected to those types of network
devices, you should disable auto-MDI/MDI-X and set the wiring
configurations manually.
The appropriate MDI/MDI-X setting for a switch port connected to a

10/100Base-TX network device with a fixed wiring configuration
depends on the setting of the network device and whether the
switch and network device are connected with straight-through or
crossover cable. If you are using straight-through copper cable, the
wiring configurations of a port on the switch and a port on a
network device must be opposite each other, such that one port
uses MDI and the other MDI-X. For example, if a network device
has a fixed wiring configuration of MDI, you must disable auto-MDI/
MDI-X on the corresponding switch port and manually set it to
MDI-X. If you are using crossover copper cable, the wiring
configurations of a port on the switch and a port on a network
device must be the same.
The default speed setting for the ports is Auto-Negotiation. This

setting is appropriate for ports connected to network devices that
also support Aut-Negotiation.
The default speed setting of Auto-Negotiation is not appropriate for

ports connected to 10/100Base-TX network devices that do not
support Auto-Negotiation and have fixed speeds. For those switch
ports, you should disable Auto-Negotiation and set the port's
speed manually to match the speeds of the network devices.
The 10/100/1000Base-T ports must be set to Auto-Negotiation, the

default setting, to operate at 1000Mbps.
The default duplex mode setting for the ports is Auto-Negotiation.

This setting is appropriate for ports connected to network devices
that also support Auto-Negotiation for duplex modes.