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Enabling Smart Redundancy
Configuring ZoneDirector for Smart Redundancy
ZoneDirector 9.8 User Guide, 800-70599-001 Rev B
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NOTE: This feature is only available using two ZoneDirectors of the same model
and number of licensed APs. You can not enable Smart Redundancy using a
ZoneDirector 3000 as the primary and a ZoneDirector 1100 as the backup unit, for
example.
When two ZoneDirectors are connected in a Smart Redundancy configuration, the
Standby ZD will send heartbeats and the Active will send discovers, at 6 second
intervals. If after 15s, no reply is seen, the ZDs will make a decision if it is
disconnected with its peer, and the Standby ZD will change to Active.
When the two ZoneDirectors are communicating again, one Active ZD will change
to the Standby role and an auto-synchronization process will be started. There is a
timestamp to judge sync from which ZD, to sync the latest one to the peer. The
timestamp is updated by configuration behavior. They will continue trying to commu-
nicate, sending discover messages every 6 seconds to peers, until the ZDs are
communicating again, when they will determine Active/Standby roles based on: 1)
most managed APs, and/or 2) lower MAC address.
Configuring ZoneDirector for Smart Redundancy
For management convenience, both ZoneDirectors in a Smart Redundancy deploy-
ment can be managed via a single shared IP address. In this situation, three IP
addresses would need to be configured:
• Primary ZoneDirector’s real address
• Backup ZoneDirector’s real address
• Management address
All configuration changes are made to the active ZoneDirector and synchronized to
the standby unit. The user can access the web interface from any of the three IP
addresses, however not all configuration options are available from the standby
device.
NOTE: If you will be deploying the two ZoneDirectors on different Layer 3 networks,
you must ensure that Port 443 and Port 33003 are open in any routers and firewalls
located between the two ZoneDirectors.
To enable Smart Redundancy:
1 Log in to the web interface of the ZoneDirector you will initially designate as the
primary unit.