Allied Telesis X610-24SPS/X User Manual

Chapter 1: Overview

30

This section describes the 10/100/1000Base-T ports on the switches.

The ports are 8-pin RJ-45 connectors that use four pins at 10 or 100 Mbps 
and all eight pins at 1000 Mbps. For the pin assignments, refer to “RJ-45 
Twisted Pair Port Pinouts” on page 125.

A port’s speed can be 10, 100, or 1000 Mbps. The speed can be set 
automatically through Auto-Negotiation, the default setting, or manually 
with the AlliedWare Plus

Operating System Software.

A 10/100/1000Base-T port can operate in either half- or full-duplex mode. 
(Full-duplex mode is the only mode available when a port is operating at 
1000 Mbps.) The 10/100/1000Base-T ports are IEEE 802.3u-compliant 
and Auto-Negotiate the duplex mode setting.

You can disable Auto-Negotiation on the switch ports and set the duplex 
mode manually through the AlliedWare Plus

Operating System Software.

In order for a switch port to successfully Auto-Negotiate its duplex 
mode with a 10 or 100 Mbps end node, the end node must also be 
configured for Auto-Negotiation. Otherwise, a duplex mode 
mismatch can occur. A switch port using Auto-Negotiation defaults 
to half-duplex if it detects that the end node is not using 
Auto-Negotiation. This results in a mismatch if the end node is 
operating at a fixed duplex mode of full-duplex. 

 

 

To avoid this problem when connecting an end node with a fixed 
duplex mode of full-duplex to a switch port, use the AlliedWare Plus

Operating System Software to disable Auto-Negotiation on the port 
and set the port speed and duplex mode manually. 

 

 

Please be aware that disabling Auto-Negotiation also disables 

 

Auto-MDI/MDIX. The port’s wiring configuration defaults to the 
MDI-X setting. This setting can be configured with the AlliedWare 
Plus

Operating System Software. 

The ports have a maximum operating distance of 100 meters (328 feet).