Cabletron Systems 510 Manual De Usuario

Problem Solving

A-8

Network OK 
LED does not 
stay on after the 
functional code 
begins 
execution.

The network interface 
self-test has failed.

Refer to the SmartSwitch 
Router 500 Series System 
Software Guide to determine 
the network interface status 
and to display any logged 
network interface events.

Network 
Activity LED is 
off.

There is low network 
activity or no network 
activity.

Ensure that there is network 
activity. If the Network 
Activity LED still fails to turn 
on, then turn the unit off 
momentarily by removing it 
from the power supply. Check 
that the Network Activity LED 
blinks momentarily during the 
LED powerup self test. 

If the router is 
connected to a known 
active segment and the 
Network Activity LED 
is off, then the router is 
defective.

Replace the router.

Serial Port 1 or 
Serial Port 2 OK 
LED does not 
stay on after the 
functional code 
begins 
execution.

Serial Port 1 or 2 
interface self-test has 
failed.

Refer to the SmartSwitch 
Router 500 Series System 
Software Guide to determine 
the serial port interface status 
and to display any logged serial 
port interface events.