sa3450 - Virtual Private Networking Concepts Guide

Hewlett-Packard Company Virtual Private Networking Concepts Guide 6-1

Load Balancing and Redundancy

Load Balancing

Load BalancingLoad Balancing

Load Balancing

Given the presence of more than one VPN device in parallel, it

makes sense that each VPN device handles an equal portion of

the traffic. This equal portioning is called load balancing, which

is accomplished in two ways. Given that a tunnel is established

with the VPN device that answers first and that the VPN device

that answers first does so because it is not busy, the load should

be fairly evenly distributed.

In addition, the number of clients set for Client IP can be used to

divide up the total load among the VPN device devices. As shown

in the following example, if the total number of clients desired is

60 and there are two VPN devices, the number of clients on each

VPN device should be set to 30. In this way a maximum of 30

clients could establish tunnels with each VPN device.

Related Related

Information

InformationInformation

Information

Redundancy (page 6-2)

Tunnel Modes (page 5-20)

Tunnel Types (page 5-8)

Tunnel Definition

Tunnel Definition Tunnel Definition

Tunnel Definition

Parameters

ParametersParameters

Parameters

VPN Device A

VPN Device AVPN Device A

VPN Device A VPN Device B

VPN Device BVPN Device B

VPN Device B

Group name sales sales

Client IP 10.1.1.193 10.1.1.225

Number of clients 30 30

Secure profile (must

be previously

defined)

dialup dialup

Tunnel mode Red Red

IP route Not required Not required