OmniSwitch AOS Release 8 Network Configuration Guide December 2017 page 24-1
24 Configuring Server Load
Balancing
The OmniSwitch implementation of Server Load Balancing (SLB) software provides a method to logically
manage a group of physical servers sharing the same content (known as a server farm) as one large virtual
server (known as an SLB cluster). SLB clusters are identified and accessed using either a Virtual IP (VIP)
address or a QoS policy condition. Traffic is always routed to VIP clusters and either bridged or routed to
policy condition clusters. The OmniSwitch operates at wire speed to process client requests and then
forward them to the physical servers within the cluster.
Using SLB clusters can provide cost savings (costly hardware upgrades can be delayed or avoided),
scalability (as the demands on your server farm grow you can add additional physical servers), reliability
(if one physical server goes down the remaining servers can handle the remaining workload), and
flexibility (you can tailor workload requirements individually to servers within a cluster).
In This Chapter
This chapter describes the basic components of Server Load Balancing and how to configure them through
the Command Line Interface (CLI). CLI commands are used in the configuration examples; for more
details about the syntax of commands, see the OmniSwitch AOS Release 8 CLI Reference Guide.
Configuration procedures described in this chapter include:
• Procedures to configure SLB on a switch on page 24-10.
• Procedures to configure logical SLB clusters on page 24-11.
• Procedures to configure physical servers in SLB clusters on page 24-13.
• Procedures to configure SLB probes on page 24-17.
• Procedures for troubleshooting and maintenance on page 24-16 and page 24-21.
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