Check that the attached data terminal equipment, Check that the link signal has not been disable, Verifying collision led – Allied Telesis AT-MR840TF User Manual
Page 34
Installation
14
If the LINK OK LED does not light, there is no signal continuity.
1. Check that the attached Data Terminal Equipment (DTE) is ON.
2. Check that the Link signal has not been disabled at the other network
device.
If these checks do not identify the problem, it may indicate that the hub or
device connected to the port is faulty.
Verifying Collision LED
The COLLISION LED will blink when an SQE or collision occurs. Occasional
collisions are normal in Ethernet networks. A COLLISION LED that remains
on may indicate that a specific port is experiencing excessive traffic problems.
Continuous blinking of the COLLISION LED may also indicate excessive frame
collisions on a segment. This may be caused by an overloaded segment, a faulty
cable or connection.
MR840TF_Book Page 14 Tuesday, November 11, 1997 3:46 PM