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Cisco Wireless LAN Controller Configuration Guide
OL-17037-01
Chapter 7 Controlling Lightweight Access Points
Configuring Backup Controllers
Using the GUI to Configure Backup Controllers
Using the controller GUI, follow these steps to configure primary, secondary, and tertiary controllers for
a specific access point and to configure primary and secondary backup controllers for all access points.
Step 1 Click Wireless > Access Points > Global Configuration to open the Global Configuration page (see
Figure 7-14).
Figure 7-14 Global Configuration Page
Step 2
From the Local Mode AP Fast Heartbeat Timer State drop-down box, choose Enable to enable the fast
heartbeat timer for access points in local mode or Disable to disable this timer. The default value is
Disable.
Step 3 If you chose Enable in Step 2, enter a number between 1 and 10 seconds (inclusive) in the Local Mode
AP Fast Heartbeat Timeout field to configure the fast heartbeat timer for access points in local mode.
Specifying a small heartbeat interval reduces the amount of time it takes to detect a controller failure.
The default value is 0 seconds, which disables the timer.
Step 4 From the H-REAP Mode AP Fast Heartbeat Timer State drop-down box, choose Enable to enable the
fast heartbeat timer for hybrid-REAP access points or Disable to disable this timer. The default value is
Disable.
Step 5 If you chose Enable in Step 4, enter a value between 1 and 10 seconds (inclusive) in the H-REAP Mode
AP Fast Heartbeat Timeout field to configure the fast heartbeat timer for hybrid-REAP access points.
Specifying a small heartbeat interval reduces the amount of time it takes to detect a controller failure.
The default value is 0 seconds, which disables the timer.
Step 6 In the AP Primary Discovery Timeout field, a value between 30 and 3600 seconds (inclusive) to
configure the access point primary discovery request timer. The default value is 120 seconds.