The following information is based on OpenSuse 11.1 and might fit as well to 11.2
Motivation: We had problems using the OpenSuse 11.1 base DVD ISO image for installation so we where forced to have the update repository available during installation. Since a update repsotory is not stable in terms of software release number each new installation might differ to a previous run and requires internet access as well.
To aviod this problem we decided to mirror the Update repository ( only required parts of course ) to the local installation server. Our local directory is /export/mirror/frozen/ftp5.gwdg.de/pub/opensuse/update/11.1
To enable autoyast to use this repository an add_on_products.xml has been created within the 32bit installation repository:
Example: $ cat /export/suse/sl111/x86/add_on_products.xml <?xml version="1.0"?> <add_on_products xmlns="http://www.suse.com/1.0/yast2ns" xmlns:config="http://www.suse.com/1.0/configns%22%3E <product_items config:type="list"> <product_item> <name>11.1 updates</name> <url>http://OurInstallationServerIP/export/mirror/frozen/ftp5.gwdg.de/pub/opensus...</url> <path>/</path> <ask_user config:type="boolean">false</ask_user> <selected config:type="boolean">true</selected> </product_item> <!-- Another product item --> <product_item /> </product_items> </add_on_products>