Exegin Technologies Limited Q52 Manuel D’Utilisation

28

Q52 Installation and Configuration Guide © Exegin Technologies Limited, 2007

5. Configuring the Q52 on Your Network
Troubleshooting Tips

•

Have you confirmed the network connection to the Q52 is working correctly? 
Trying different network cables and locations will help narrow down the problem.

There are a number of possible reasons for this:

•

Have you rebooted the Q52? Sometimes this will solve various communication 
problems.

•

Is the network cable securely connected?

•

Have you checked your network connection to the Q52? Try it at a new location on 
your network if possible or swap in another device.

•

Have you made an entry in your computer’s host table (/etc/hosts, host nis map, or 
DNS name table) for the Q52?

•

Have you tried to ping with the IP address instead of the IP name? This will 
eliminate any name-lookup issues and focus more on the communications between 
the Q52 and your host.

•

Is it possible that a duplicate IP address has been assigned?

•

Did you use the correct netmask for your particular environment?

•

Has the Q52 been moved from another network? If so, it will likely need to be 
reconfigured to integrate with its new location. This includes at minimum a new IP 
address and netmask. Please see 

 on page 99 for 

possible configuration methods.

•

Is there a router between the Q52 and your host? If so, a default router or a static 
route must be configured on the unit so the Q52 knows how to get its response back 
to the originating host. Please see 

 on page 25.

•

Do you have a DHCP or BOOTP server running on your network? By default, the 
Q52 comes with the DHCP and BOOTP request turned on so although you may 
have stored a particular network configuration in the unit’s EEPROM, a DHCP or 
BOOTP server may supply new network parameters upon bootup. To turn off 
DHCP and BOOTP on the unit, please see 

 on page 21.

If none of these help, try the following:

•

Reset the unit to default settings. Please see 

99. Once the unit is in the default state, use one of the configuration options listed in 
the "Q52 Configuration" above in the manual to reconfigure it.

If you are unable to ping the Q52 as well, please see 

 on page 28. If 

it is telnet only that you are having problems with, these points should be considered:

•

Are you able to telnet to another host on your network or telnet from another host? 
If not, look into your host’s TELNET configuration.