W A R N I N G
Troubleshooting
Basic Troubleshooting Tips
Basic Troubleshooting Tips
If the router module needs to be returned to HP, use the original packaging. The nonconducting antistatic enclosure surrounding the router module ensures that the battery on the router module will not short out while being shipped.
Make sure that you have a valid network topology. If you have trouble after a recent change to the network, switch back to the previous topology. If you no longer have trouble, the new topology is probably at fault.
Make sure that the WAN cable connection is secure.
If the router module’s Copyright and Main Menu screens do not appear on the console when you attempt to connect to the router module using HP Stack Manager, make sure the console is correctly connected to the hub. (Refer to the hub’s installation guide.)
If characters on the console interface are missing or corrupted, verify that the console cable is connected to a hub that has an SNMP module installed in it.
Check the LEDs on the router module’s cover plate. For descrip- tions, see “Status LEDs” (page
The LED error patterns described in this chapter indicate specific error conditions that in some cases require either a recovery procedure done by the operator or replacement of the router module. The router also can display error messages indicating flash memory problems that require powering the hub off and on, downloading new operating code into the router module, or replacing the router module.