The simple intranet solution described in this chapter is commonly found in a corporate intranet (see Figure 6.1 ). In this scenario, the BIG-IP® system performs load balancing for several different types of connection requests:
As Figure 6.1 shows, the non-intranet connections are handled by wildcard virtual servers, that is, servers with the IP address 0.0.0.0. The wildcard virtual server that is handling traffic to the cache servers is port specific, specifying port 80 for HTTP requests. This way all HTTP requests not matching an IP address on the intranet are directed to the cache server. The wildcard virtual server handling non-HTTP requests is a default wildcard server. A default wildcard virtual server is one that uses only port 0. This makes it a catch-all match for outgoing traffic that does not match any standard virtual server or any port-specific wildcard virtual server.
To create this configuration, you need to complete the following tasks in order:
The first task in a basic configuration is to define the two load balancing pools: a pool for the intranet content servers and a pool for the Internet cache servers.
The next task in a basic configuration is to create the virtual servers that reference http_pool and specificport_pool, respectively. You must also create a forwarding virtual server (with no pool) for remaining Internet traffic.