Allied Telesis at-8516f User Guide

If you are familiar with networking and switch operations, you may be able to 
diagnose and solve some problems yourself.

This chapter gives tips on how to:

■

start your switch (see “How the Switch Starts Up” on page 112).

■

avoid problems (see “How to Avoid Problems” on page 113).

■

reconfigure your switch if you accidentally clear the FLASH memory (see 
“What to Do if You Clear FLASH Memory Completely” on page 115). 

■

troubleshoot a PPP link that disconnects (see “What to Do if the PPP Link 
Disconnects Regularly” on page 116).

■

reset passwords if they are lost (see “What to Do if Passwords are Lost” on 
page 116).

■

gather information from your switch that support personnel need to 
provide accurate support tailored to your situation (see “Getting the Most 
Out of Technical Support” on page 117).

■

restart the switch at any time with no configuration (see “Resetting Switch 
Defaults” on page 118).

■

check whether there is a connection between the switch and another 
routing interface in the network (see “Checking Connections Using PING” on 
page 118).

■

troubleshoot if no routes exists to the remote switch (see “Troubleshooting IP 
Configurations” on page 119 and “Troubleshooting IPX Configurations” on 
page 121).

■

troubleshoot problems with DHCP IP addresses if the switch is acting as a 
client or as a server (see “Troubleshooting DHCP IP Addresses” on page 120) 

■

examine the route that packets pass between two systems running the IP 
protocol (see “Using Trace Route for IP Traffic” on page 123).

Information gained from the LEDs on the front panel of the switch is described 
in the Rapier Switch Hardware Reference.