Chapter 10: Troubleshooting
212
Problem 3:
A twisted pair port on the switch is connected to an active
network device but the port’s LINK/ACT LED is off.
Solutions:
The port is unable to establish a link to a network device. Try
the following:
Verify that the network device connected to the twisted pair port is
powered on and is operating properly.
Try connecting another network device to the twisted pair port with
a different cable. If the twisted pair port is able to establish a link,
then the problem is with the cable or the other network device.
Verify that the twisted pair cable does not exceed 100 meters
(328 feet).
Verify that you are using the appropriate category of twisted pair
cable. Refer to “Cable Requirements” on page 33.
Verify that the port is connected to the correct twisted pair cable.
Note
Twisted pair ports may require five to ten seconds to establish a link.
Problem 4:
The LINK/ACT LED for an SFP or SFP+ transceiver is off.
Solutions:
The fiber optic port on the transceiver is unable to establish a
link to a network device. Try the following:
Verify that the remote network device connected to the fiber optic
port is operating properly.
Verify that the fiber optic cable is securely connected to the port on
the transceiver and to the port on the remote network device.
Check that the transceiver is fully inserted in the port.
Verify that the operating specifications of the fiber optic ports on
the transceiver and remote network device are compatible.
Verify that the correct type of fiber optic cabling is being used.
Verify that the port is connected to the correct fiber optic cable.
Try connecting another network device to the fiber optic port using
a different cable. If the port is able to establish a link, then the
problem is with the cable or with the other network device.
Use the switch management software to verify that the port is
enabled.
If the remote network device is a managed device, use the
management firmware to determine whether the port is enabled.
Test the attenuation of both directions on the fiber optic cable with
a fiber optic tester to determine whether the optical signal is too
weak (sensitivity) or too strong (maximum input power).
Содержание x530L Series
Страница 8: ...Contents 8 ...
Страница 12: ...Tables 12 ...
Страница 16: ...Preface 16 ...
Страница 56: ...Chapter 1 Overview 56 ...
Страница 60: ...Chapter 2 Virtual Chassis Stacking 60 When using a multi speed port as a stack port it supports 1 to 8 links ...
Страница 88: ...Chapter 2 Virtual Chassis Stacking 88 ...
Страница 140: ...Chapter 6 Installing the Switch on a Wall 140 ...
Страница 202: ...Chapter 8 Building the Stack Trunk with 5Gbps Multi Speed Ports 202 ...
Страница 210: ...Chapter 9 Cabling the Networking Ports 210 ...
Страница 228: ...Appendix A Technical Specifications 228 ...