When failover occurs, all associated APs will continue to provide wireless service to
clients during the transition, and will associate to the newly active ZoneDirector within
approximately one minute.
When two ZoneDirectors are connected in a Smart Redundancy configuration, the
standby ZD will send heartbeats and the active will send discover messages at 6 second
intervals. If after 15 seconds no reply is seen, each controller will assume disconnection
from its peer, and the standby ZD will change to active state. At this point both devices
are in active state and will accept join requests from APs.
When the two ZoneDirectors are communicating again, one active ZD will change to
standby state and an auto-synchronization process will be started. A timestamp is used
to determine which ZD should sync its latest configuration changes to those of its peer.
They will continue trying to communicate, sending discover messages every 6 seconds,
until the ZDs are communicating again, at which point 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 deployment
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.
2.
Go to
Configure
>
System
, and set a static IP address under Device IP Settings, if
not already configured.
3.
Click
Apply
. You will need to log in again using the new IP address (if changed).
4.
On the same
Configure
>
System
page, locate the Smart Redundancy section.
47
Ruckus Wireless ZoneDirector™ Release 10.0 User Guide
Configuring System Settings
Enabling Smart Redundancy
