Switch Cable Installation - Allied Telesis IE210L Series Installation Manual

Switch Cable Installation

Observe the following guidelines when connecting twisted pair and fiber
optic cables to the ports on the switch:
Select the recommended cable for the twisted pair ports by

referring to "Cable Requirements" on page 66.
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
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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
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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
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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.
The default speed setting for the ports is Auto-Negotiation. This
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IE210L Series Industrial Gigabit Ethernet Switch Installation Guide
45