Novell LINUX ENTERPRISE SERVER 10 SP2 - INSTALLATION AND ADMINISTRATION Installation Manual page 953

LDAP (User Management)
If your SUSE Linux Enterprise system relied on an LDAP server to provide
the user data, users would not be able to log in to this machine if the LDAP
service was down.
Kerberos (Authentication)
Authentication would not work and login to any machine would fail.
CUPS (Network Printing)
Users would not be able to print.
4 Check whether the network servers are running and whether your network setup
allows you to establish a connection:
IMPORTANT
The debugging procedure described below only applies to a simple net-
work server/client setup that does not involve any internal routing. It
assumes both server and client are members of the same subnet without
the need for additional routing.
4a Use ping hostname (replace hostname with the hostname of the
server) to check whether each one of them is up and responding to the net-
work. If this command is successful, it tells you that the host you were
looking for is up and running and that the name service for your network is
configured correctly.
If ping fails with destination host unreachable, either your
system or the desired server is not properly configured or down. Check
whether your system is reachable by running ping your_hostname
from another machine. If you can reach your machine from another machine,
it is the server that is not running at all or not configured correctly.
If ping fails with unknown host, the name service is not configured cor-
rectly or the hostname used was incorrect. Use ping -n ipaddress to
try to connect to this host without name service. If this is successful, check
the spelling of the hostname and for a misconfigured name service in your
network. For further checks on this matter, refer to Step 4b (page 936). If
ping still fails, either your network card is not configured correctly or your
Common Problems and Their Solutions 935