Allied Telesis AT-SBX31GT24 User Manual

SwitchBlade x3112 Installation Guide

129

For automatic MDIX detection to work successfully, the remote device 
connected to a port must also support the feature. If it does not, a port on a 
line card defaults to MDIX. This may require the use of a crossover cable.

Here are guidelines to choosing straight-through or crossover cabling for 
the ports:



You may use straight-through cables on ports that are connected 
to network devices that operate at 1000 Mbps.



You may use straight-through or crossover cables on ports that are 
connected to network devices that support automatic MDIX 
detection and that operate at 10 or 100 Mbps.



You must use straight-through cables on ports that are connected 
to network devices that have a fixed wiring configuration of MDI 
and that operate at 10 or 100 Mbps.



You must use crossover cables on ports that are connected to 
network devices that have a fixed wiring configuration of MDIX and 
that operate at 10 or 100 Mbps.

Here are a few additional guidelines to connecting cables to ports on the 
AT-SBx31GT40 Line Card:



The ports require the RJ point 5 cable connector shown in Figure 83.

Figure 83. RJ Point 5 Cable Connector for AT-SBx31GT40 Line Card



To connect a cable to a port in the top role on the line card, orient the 
connector with the release tab on top. To connect a cable to a port in 
the bottom role, orient the connector with the release tab on the 
bottom. Refer to Figure 84 on page 130.



To remove a cable from a port, pull gently on the release tab and slide 
the cable connector from the port.

Patch cables for the AT-SBx31GT40 Line Card, in lengths of 1 meter 
and 3 meters with RJ point 5 and RJ-45 connectors, are available 
from Allied Telesis. Contact your Allied Telesis sales representative 
for information.