Chapter 15: Troubleshooting
202
4, 5, 7, and 8 as the power carriers. The AT-x930-28GPX and AT-
x930-52GPX Switches do not support Mode B. Most powered
devices are designed to accept power by either mode, but some
legacy devices may only support one mode. This can be verified
by reviewing the device’s documentation or data sheet. Legacy
devices that only support Mode B will not work with the switches.
Check that the device’s power requirements do not exceed 30 W.
This can be verified by reviewing the device’s documentation or
data sheet.
Verify that you are using the appropriate category of copper cable
by referring to “Cable Requirements” on page 32.
Use the management software on the switch to determine whether
PoE is enabled on the port. The default setting for PoE is enabled.
Use the management software on the switch to determine whether
the PoE power setting for the port has been reduced to a value
below the power requirements of the device.
Try connecting the device to a different port on the switch.
Problem 10:
One or more ports on the optional AT-x9EM/XT Card cannot
establish connections to network devices or do not forward traffic.
Solutions:
Try the following:
Verify that the switch has version 5.4.5-2 or later of the x930
operating system. Earlier versions of the management software do
not support the card. For instructions, refer to “Displaying the
Hardware Status and AlliedWare Plus Version Number” on
Check that the cables do not exceed 100 m (328 ft).
Verify that you are using UTP or STP Cat. 5e for 1Gbps links and
UTP or STP Cat. 6e cable for 10Gbps links.
Verify that the port is connected to the correct copper cable. This is
to eliminate the possibility that the port is connected to the wrong
network device.
Verify that the network device connected to the port is powered on
and is operating properly.
Try connecting another network device to the port with a different
cable. If the port is able to establish a link, then the problem is with
the cable or the other network device.
Verify that the copper cable does not exceed 100 meters (328
feet).
Summary of Contents for AT-x930-28GPX
Page 8: ...Contents 8...
Page 12: ...Tables 12...
Page 16: ...Preface 16...
Page 82: ...Chapter 2 Virtual Chassis Stacking 82...
Page 92: ...Chapter 3 Beginning the Installation 92...