User's Manual

Chapter 23 Device HA
NXC CLI Reference Guide
164
23.1.1 Before You Begin
• Configure a static IP address for each interface that you will have device HA monitor.
 Subscribe to services on the backup NXC before synchronizing it with the
master NXC.
• Synchronization includes updates for services to which the master and backup NXCs 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 NXCs to the same services.
23.2 General Device HA Commands
This table lists the general commands for device HA.
23.3 Active-Passive Mode Device HA
Virtual Router
The master and backup NXC form a single ‘virtual router’.
Cluster ID
You can have multiple NXC 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 NXC
loses its connection, device HA has the backup NXC take over.
Enable monitoring for the same interfaces on the master and backup NXCs. 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 NXC.
Table 92 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} Sets the NXC to use active-passive or legacy
(VRRP group based) device HA.