Allied Telesis AT-S63 - Manual (Page 115)

AT-S63 Management Software Menus Interface User’s Guide
Section I: Basic Operations 115
ˆ To avoid this problem when connecting an end node with a fixed
duplex mode of full-duplex to a switch port, disable Auto-
Negotiation on the port and set the port’s speed and duplex mode
manually.
ˆ When a twisted pair port is set to Auto-Negotiation, the MDI/MDI-X
setting for the port is locked at auto-MDI/MDI-X. The switch
automatically determines the correct MDI/MDI-X setting. You
cannot set MDI/MDI-X manually.
ˆ When Auto-Negotiation is disabled on a twisted pair port, the auto-
MDI/MDI-X feature on a port is also disabled, and the port defaults
to the MDI-X configuration. Consequently, if you disable Auto-
Negotiation and set a port’s speed and duplex mode manually, you
might also need to set the port’s MDI/MDI-X setting as well.
ˆ Though you can disable Auto-Negotiation on an 1000 Mbps SFP or
GBIC module, you cannot change its speed of 1000 Mbps or its
duplex mode setting of full-duplex.
7 - Speed
This item is only available when Negotiation is set to Manual. Type 7 to
toggle between the following selections:
10 Mbps
100 Mbps
1000 Mbps (Applicable only to 1000Base SFP and GBIC modules.)
Note
A 10/100/1000Base-T twisted pair port can operate at 1000 Mbps
only when set to Auto-Negotiation. You cannot manually configure a
10/100/1000Base-T twisted pair port to 1000 Mbps.
8 - Duplex
This item is only available when Negotiation is set to Manual. The
possible settings are full-duplex and half-duplex.
9 - MDI Crossover
This item is only available when Negotiation is set to Manual.
This selection sets the wiring configuration of a twisted pair port. The
configuration can be MDI or MDI-X.
The twisted pair ports on the switch feature auto-MDI/MDI-X. They
configure themselves automatically as MDI or MDI-X when connected
to an end node. This allows you to use either a straight-through or
crossover twisted pair cable when connecting any network device to a
port on the switch.