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which is the answer of the above command hostname -fv

Yes? No problem, continue with the next step.

No? You found the problem. Contact your network administrator to cor-

rect the nameserver settings.

3. The firewall may prevent the spectrometer booting. To check this:

• open a Linux shell

•type in su - to become superuser and check what is the configuration of

iptables

with the command

service iptables status

Did you get a information that contains three times

(policy ACCEPT)?

Yes ? No problem, go to next step

No, the answer is at great length? You may have found the problem. To

check this it is the best to stop the firewall temporarily. Note that this

can cause security problems. If in doubt please contact your system

administrator. To stop the firewall type in (for more details about the

firewall see chapter 15.2):

service iptables stop

Check the spectrometer connection once again. Does it work now?

• No ? No problem, go to next step

• Yes ? You might have found the problem. The system administrator

has to make sure that the ethernet card for spectometer control gets full

access or the firewall has to disable in general. This can be done by the

command:

chkconfig iptables off

Note: You have to reboot the PC.

4. The DISKLESS package is not installed. Insert the T

OPSPIN DVD into the

DVD drive, select the Diskless package and deselect all other packages. For

more details see installation description in chapter 10.7.1. After installation of

Diskless reboot the spectrometer.

5. Check if the DHCP service is running

. Open a shell and enter the command

1. If you use the firewall package iptables, you have to make sure that it allows the ethernet card

for spectrometer control full access (see chapter 15.2.1)

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Red Hat ENTERPRISE LINUX WS 2.1 - Guida di Installazione Pagina 195