Extend a Web Application

Solution: Use the New-SPWebApplicationExtension cmdlet.

If you need to extend a web application to a different zone, that zone must not already be in use. New-SPWebApplicationExtension requires only the web application identity, the name of the new website that will extend the web application, and the zone. However, it is a good idea to include the new URL and HostHeader that the web application extension will use for the zone. Listing 5.6 shows an example command-line entry for extending the main SharePoint web application.

Listing 5.6. Extending a Web Application Example

New-SPWebApplicationExtension -Identity "SharePoint - 80" -Name "SP
Internet Site" -Zone Internet -Url "http://internet" -HostHeader
"http://internet.sp2013.com"

The URL is the public-facing HTTP address; the HostHeader entry is the internal alternate access mapping. The Zone parameter can be one of the following:

• Default

• Intranet

• Internet

• Extranet

• Custom

The zone used in the command must not already be used. That is, a web application cannot already be extended to that zone.