Configuring the WSM using Device Manager

Using the operators Or and And

The following figure shows a network with real servers 1 and 3 configured for URL SLB and real servers 2 and 3 configured for HTTP Host SLB.

In the above figure, with content precedence lookup, the request from the client is processed as follows, depending on the configured operator (And/Or):

HTTP Host or URL SLB

The HTTP Host header takes precedence because it is specified first. If there is no Host Header information and the Or operator is used, the URL string is examined next.

If a request from a client contains no Host Header but has a URL string (such as "/gold"), the request is load balanced among Servers 1 or 3.

If a request from a client contains a Host Header, then the request is load balanced among Servers 2 and 3. The URL string is ignored because the HTTP Host was specified and matched first.

HTTP Host and URL SLB

The HTTP Host header takes precedence because it is specified first. Because the And operator is used, both a Host Header and URL string are required. If neither is available, the request is dropped.

If a request from a client contains a URL string (/gold) but not a Host Header, it is not served by any real server.

If a request from a client contains a URL string (/gold) and Host Header, it is served only by real server 3.