Chapter 25 Device HA

Otherwise you must manually configure the master ZyWALL’s settings on the backup (by editing copies of the configuration files in a text editor for example).

25.1.1Before You Begin

Configure a static IP address for each interface that you will have device HA monitor.

Note: Subscribe to services on the backup ZyWALL before synchronizing it with the master ZyWALL.

Synchronization includes updates for services to which the master and backup ZyWALLs are both subscribed. For example, a backup subscribed to IDP/AppPatrol, but not anti-virus, gets IDP/ AppPatrol updates from the master, but not anti-virus updates. It is highly recommended to subscribe the master and backup ZyWALLs to the same services.

25.2General Device HA Commands

This table lists the general commands for device HA.

Table 124 device-ha General Commands

COMMAND

DESCRIPTION

show device-ha status

Displays whether or not device HA is activated, the configured device HA

 

mode, and the status of the monitored interfaces.

 

 

[no] device-ha activate

Turns device HA on or off.

device-ha mode {active-passive legacy}

Sets the ZyWALL to use active-passive or legacy (VRRP group based)

 

device HA.

 

 

25.3 Active-Passive Mode Device HA

Virtual Router

The master and backup ZyWALL form a single ‘virtual router’.

Cluster ID

You can have multiple ZyWALL virtual routers on your network. Use a different cluster ID to identify each virtual router.

Monitored Interfaces in Active-Passive Mode Device HA

You can select which interfaces device HA monitors. If a monitored interface on the ZyWALL loses its connection, device HA has the backup ZyWALL take over.

Enable monitoring for the same interfaces on the master and backup ZyWALLs. Each monitored interface must have a static IP address and be connected to the same subnet as the corresponding interface on the backup or master ZyWALL.

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ZyWALL (ZLD) CLI Reference Guide