Allied-telesis AT-FS970M Series Manual do Utilizador descarregar pdf (Página 183)

AT-FS970M Switch Command Line User’s Guide

183

Setting the MDI/MDI-X Wiring Configuration

The wiring configurations of twisted pair ports that operate at 10 or 100

Mbps are MDI (medium dependent interface) and MDI-X (medium

dependent interface crossover). A port on the switch and a port on a link

partner must have different settings. For instance, a switch port has to be

using the MDI wiring configuration if the port on its link partner is using the

MDIX wiring configuration.

The command for setting the wiring configuration is the POLARITY

command in the Port Interface mode. Here is the format of the command:

polarity auto|mdi|mdix

The AUTO setting activates auto-MDI/MDIX, which enables a port to

detect the wiring configuration of its link partner so that it can set its wiring

configuration to the opposite setting.

This example of the command configures ports 22 and 23 to the MDI

wiring configuration:

awplus> enable

awplus# configure terminal

awplus(config)# interface port1.0.22,port1.0.23

awplus(config-if)# polarity mdi

This example activates auto-MDI/MDIX on ports 7 to 9:

awplus> enable

awplus# configure terminal

awplus(config)# interface port1.0.7-port1.0.9

awplus(config-if)# polarity auto

For reference information, refer to “POLARITY” on page 222.

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Allied-telesis AT-FS970M Series Manual do Utilizador Página 183