Chapter 4

Cabling the Networking Ports

Observe the following guidelines when connecting a twisted-pair cable to a port on the switch:

The cable specifications for the 10/100/1000Base-T twisted pair ports are listed in Table 1 on page 27.

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.

The appropriate MDI/MDI-X setting for a switch port connected to a 10/100Base-TX host device with a fixed wiring configuration depends on the setting of the host device and whether the switch and host 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 host device must be opposite each other, such that one port uses MDI and the other MDI-X. For example, if a host 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 twisted pair cable, the wiring configurations of a port on the switch and a port on a host device must be the same.

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Allied Telesis AT-9000/28POE, AT-9000/12POE manual Cabling the Networking Ports, Chapter