D-Link DFL-2500 User Guide - Page 280
Server Load Balancing SLB
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24 CHAPTER Server Load Balancing (SLB) 24.1 Overview Server Load Balancing (SLB) is a mechanism dealing with distributing the traffic load across multiple servers to scale beyond the capacity of one single server, and to tolerate a server failure. This technology is integrated in D-Link firewalls to enable high performance and throughput of the network. 24.1.1 The SLB Module In the SLB module, a network appliance acts as a Server load balancer, connecting the network where the request traffic comes from with a cluster of servers called Server farm. SLB logical view Figure 24.1 illustrates a logical view of a SLB module. In this module, 3 servers construct a server farm, and a D-Link firewall acts as a sever load balancer. Server farm A collection of computer servers usually maintained by an enterprise to accomplish the service needs far beyond the capability of a single machine. 261
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