If you installed and configured Office SharePoint Server 2007 on a single front-end server, and a user browses to your server, the server will render the content that is in your Web application. However, if you added subsequent front-end servers to your server farm, the newly-added servers will not have alternate access mappings configured to your Web application. To map newly-added front-end servers to your existing Web application, you need to configure alternate access mappings.

Before you configure alternate access mappings, install and configure Office SharePoint Server 2007 on all of the front-end servers that you want to add to your server farm, and make sure that the servers are joined to your server farm. See “Run Windows SharePoint Services Setup” and “Run the SharePoint Products and Technologies Configuration Wizard” for information about installing and configuring Office SharePoint Server 2007. 

To configure alternate access mappings

1. On the SharePoint Central Administration home page, click the Operations tab.
   
2. On the Operations page, in the Global Configuration section, click Alternate access mappings.
   
3. In Alternate Access Mapping Collection, click Change Alternate Access Mapping Collection.
   
4. In the Select an Alternate Access Mapping Collection dialog box, click the Web application that you want to modify. If you have created only one Web application, and you specified port 80 for the Web application, the Web application should be listed as SharePoint (80).
   
5. Click Edit Outbound URLs, and verify that your Web application is listed in the Default zone for outbound URLs. The outbound URL is the URL that you want users to use to access your Web application.
   

Note: If you have a load-balanced configuration with a host name, add the host name to the Outbound URL for the Default zone.

1. Click Save.
   

• Click Add Incoming URLs.
  
• On the Add Incoming URLs page, in New default zone URL protocol, host and port type the URL for the server that you want to map to your Web application. Typically, this is http://servername:portnumber.
  Note: If you have a load-balanced configuration, you should add the server name of each of your front-end Web servers to the list of internal URLs. This will allow each of your Web servers to reach the content in your common Web application. Also, make sure the zone you selected for the incoming URL matches the zone of the outbound URL for the load balancer. You can have multiple incoming URLs associated with a single outbound URL.
  

1. In Zone, make sure that Default is selected.
   

• Click Save.