Rockwell Tools 1783-MS10T User Manual download pdf (Page 72)

72 Publication 1783-UM002C-EN-P - April 2009

Chapter 3

Link Status

Verify that both sides have a network link. A single broken wire or one shut

down port can cause one side to show a link, but not the other side.

A Link status indicator does not guarantee that the cable is fully functional.

The cable might have encountered physical stress that causes it to function at a

marginal level.

If the Link status indicator for the port is not lit, do the following.

• Connect the cable from the switch to a known good device.

• Make sure that both ends of the cable are connected to the correct

ports.

• Verify that both devices have power.

• Verify that you are using the correct cable type.

• Rule out loose connections. Sometimes a cable appears to be seated, but

is not. Disconnect the cable, and then reconnect it.

Transceiver Issues

Use only Rockwell Automation SFP modules on the switch. Each SFP module

has an internal serial EEPROM that is encoded with security information.

This encoding identifies and validates that the module meets the requirements

for the switch. Other manufacturers’ SFP modules will not function correctly.

Check these items.

• Bad or incorrect SFP module.

Exchange the suspect module with a known good module. Verify that

the module is supported on this platform.

• Use the CLI show interfaces command or the CLI show int status

command to verify the port or module error-disabled or shutdown

status. Re-enable the port if needed.

• Make sure that all fiber connections are properly cleaned and securely

connected.

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Rockwell Tools 1783-MS10T User Manual Page 72