Load Balancing Virtual Servers, Pools, and Nodes

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One virtual server (virtual IP address) was configured. Itserves as the public Web site address (WWW Onlyport 80 is open to help minimize the exposure of the server farmfrom the network level.

The two virtual servers are each associated with a loadbalancing pool. The public virtual server is associated with theload balancing pool that contains the front-end NIC addresses offront-end Web servers running Windows SharePoint Services. Thereare six front-end Web Servers, so six IP addresses were added tothe load balancing pool and only port 80 is open for public access.All front-end Web servers have the same priority and ratio.Predictive (Node Address) is the load balancing method set on F5BIG-IP controllers.

Even though the server farm configuration in this paper does notsupport SSL, the Internet Platform and Operations group tested SSLconfiguration in another Internet pre-production environment. IfSSL is required, port 443 can be opened on the router and BIG-IPlevels can be set to allow SSL traffic to come in. All otherinbound ports should be blocked to help provide a high level ofsecurity.

Note: Windows SharePointServices does not support terminating SSL on a switch or router.The URL that Microsoft Internet Information Services (IIS) receivesmust be the actual URL of the resource. Otherwise, links on thepages rendered by Windows SharePoint Services will beincorrect.