HP VPN Firewall Appliances High Availability Configuration Guide

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Figure 81 Diagram for load balancing mode

In load balancing mode, you can set an upper threshold (enable-threshold) and a lower threshold

(disable-threshold). Traffic can be shared among multiple interfaces:

• When the traffic on the active interface exceeds the predefined enable-threshold, the highest

priority standby interface is activated. Other standby interfaces are activated in descending priority

order if exceeding traffic still exists.

• When the traffic on the active interface decreases below the predefined disable-threshold, the

system shuts down the lowest priority standby interface first and then shuts down the other standby

interfaces in ascending priority order depending on traffic size.

NOTE:

• Adopt active/standby or load balancin

mode dependin

on whether you have confi

ured an upper or

lower threshold for the active interface traffic. If this threshold is configured, load balancing mode is

adopted. Otherwise, active/standby mode is adopted.

• If a dialer interface acts as the active interface, the load balancing mode does not take effect.

Interface backup configuration task list

Task Remarks

Configuring interface backup

Configuring active/standby mode

Optional

Associating an interface with a track entry

Configuring load balancing Optional

Configuring interface backup

You can configure interface backup through active/standby mode or association between an interface

and a track entry, but you cannot configure them at the same time.

Configuring active/standby mode

You can configure multiple standby interfaces for one active interface. The standby interfaces are

activated depending on their priority, with the highest priority being activated first.