Server Load Balancing (Slb); Slb Overview - Avaya P330 User Manual

Server Load Balancing (SLB)

SLB Overview

Avaya P330 Load Balancing Manager User Guide
The following figure illustrates bridging FWLB.
Figure 1-5. Bridging Firewall Load Balancing
LAN
Load Balancer
This section provides information about Server Load Balancing,
including a general overview and detailed information about SLB.
Server Load Balancing intercepts all traffic between clients and servers,
and dynamically distributes the load among the available servers, based
on the SLB configuration.
In a non-balanced network, each server provides access to specific
applications or data. Some of these applications may be in higher
demand than others. Servers that provide applications with higher
demand are over-utilized while other servers are under-utilized. This
causes the network to perform below its optimal level.
Load balancing provides a solution by balancing the traffic among
several servers which all have access to identical applications and data.
This involves intercepting all traffic between clients and load-balanced
servers and dynamically distributing the load according to configured
schemes (metrics).
The load balancer acts as a Virtual Server to the outside world (the
WAN) and has a Virtual IP address.
VLAN 1
Firewall 1
Load Balancer
Firewall2
VLAN 2
Internet
Access Router
8