Networking is the first thing you would do after installation of a Linux OS (for that matter any system OS). If you are dealing with a server, chances are you don’t have a GUI at hand. Most Linux distributions have different utilities to handle network configuration. Here are links to Novell Suse Enterprise Linux documentation.
All Novell Docs -> http://www.novell.com/documentation/index.html
SLE11 Network Configuration Link -> http://www.novell.com/documentation/sles11/book_sle_admin/data/sec_basicnet_manconf.html