Red Hat ENTERPRISE LINUX WS 2.1 - Przewodnik Instalacji Pobierz pdf (Strona 182)

182 Troubleshooting TopSpin

DONE

INDEX

1. Check if the ethernet cable between PC and CCU is properly connected.

→ Remove and re-connect the ethernet cable and the transceiver or minihub.

2. Check if the ethernet interface is broken.

a) Physically connect the CCU to the first ethernet interface (eth0)

b) Become superuser; type su -

c) Change the configurations between eth0 and eth1 as described in chapter

10.5 and 10.7.1.

Note: Write down all configuration parameters like IP addresses, nameserver etc.

3. Replace the ethernet cable, transceiver or minihub between the PC and CCU to

find out if either of these components is broken.

4. If a new CCU was installed:

a) login as root

b) Type arp -d spect

c) Type reviveccu

12.3.1.3 File entries made for the spectrometer network

• /etc/hosts

149.236.99.1 ASP_ST2

149.236.99.99 spect

• /etc/bootparams

spect root=ASP_ST2:/usr/diskless/clients/spect/root

swap =ASP_ST2:/usr/diskless/clients/spect/swapfile

dump= ASP_ST2:/usr/diskless/clients/spect/dump

Note that this is one line with a blank between the three entries.

• /etc/exports

/usr/diskless/dl_usr spect(ro)

/usr/diskless/clients/spect spect(rw,no_root_squash)

• /etc/sysconfig/network

NETWORKING=yes

HOSTNAME=hosttest

1. assuming that the CCU is currently connected to the second ethernet interface.

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Red Hat ENTERPRISE LINUX WS 2.1 - Przewodnik Instalacji Strona 182