Cabling The Switch - Allied Telesis AT-x230-10GP Installation Manual

Cabling the switch

AT-x230-10GP, AT-x230-18GP and AT-x230-28GP Switches Installation Guide
Observe the following guidelines when connecting twisted pair and fiber
optic cables to the ports on the switch:
The connector on the cable should fit snugly into the port on the

switch. The tab on the connector should lock the connector into
place.
Because the twisted pair ports have auto-MDI/MDIX, you may use

straight-through twisted pair cable to connect any type of network
device to the switch.
If your network topology contains a loop where two or more

network devices can communicate with each other over more than
one network path, do not connect the network cables that form the
loop until after you activate a spanning tree protocol on the switch.
Data loops can adversely affect network performance.
If you are creating a port trunk, do not connect the cables of the

trunk to the switch until after you have created the trunk in the
switch's management software. Otherwise, a network loop will
result which can adversely affect network performance.
The default setting for the wiring configurations of the ports is auto-

MDI/MDIX. The default setting is appropriate for switch ports that
are connected to 10BASE-T and 100BASE-TX network devices
that also support auto-MDI/MDIX.
The default auto-MDI/MDIX setting is not appropriate for switch

ports that are connected to 10BASE-T and 100BASE-TX network
devices that do not support auto-MDI/MDIX and have a fixed wiring
configuration. For switch ports connected to those types of network
devices, you should disable auto-MDI/MDIX and set the wiring
configurations manually.
The appropriate MDI/MDIX setting for a switch port connected to a

10BASE-T and 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
twisted pair 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 MDIX. For example, if a
network device has a fixed wiring configuration of MDI, you must
disable auto-MDI/MDIX on the corresponding switch port and
manually set it to MDIX. If you are using crossover twisted pair
cable, the wiring configurations of a port on the switch and a port
on a network device must be the same.
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