Cisco® Field Manual: Catalyst® Switch Configuration

10-1. SLB

• SLB provides a virtual server IP address to which clients can connect, representing a group of real physical servers in a server farm. Figure 10-1 shows the basic SLB concept. A client accesses a logical “virtual” server (IP address v.v.v.v), which only exists within the Catalyst 6000 SLB configuration. A group of physical “real” servers (IP addresses x.x.x.x, y.y.y.y, and z.z.z.z) is configured as a server farm. Traffic flows between clients and the virtual server are load balanced across the set of real servers, transparent to the clients.

  Figure 10-1. SLB Concept

  

• As clients open new connections to the virtual server, SLB decides which ...