Allied Telesis AT-x230-10GP Installation Guide download pdf (Page 60)

Chapter 2: Installation

Cabling the switch

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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Allied Telesis AT-x230-10GP Installation Guide Page 60