user manual

12-6
Cisco Aironet 1200 Series Access Point Software Configuration Guide
OL-2159-05
Chapter 12 Special Configurations
Using Hot Standby Mode
Note The Current State field varies depending on the hot standby status. It can display Hot Standby is not
running, Hot Standby is initializing, or Hot Standby is monitoring and protecting. The change appears
after you refresh the screen.
Follow this link path to reach the Hot Standby page:
• On the Summary Status page, click Setup.
• On the Setup page, click Cisco Services under Services.
• On the Cisco Services Setup page, click Hot Standby Management.
Note Wireless client devices associated to the standby access point lose their connections to the hot standby
access point when hot standby is started.
Note An access point with dual radios may display a large number of spurious MIC errors in networks that
have MIC enabled. These errors are caused by the hot standby unit and the root access points forming a
redundant network connecction. The errors do not affect normal or hot standby operation.
Note If you set up two standby systems on the same subnet or if the default IP address is 10.0.0.2, you must
manually set the default radio IP addresses to avoid an IP address conflict. When a hot standby unit takes
over, it uses its default IP address (10.0.0.2), which is the default for all access points. Therefore, if two
hot standby access points come on line at the same time (for example, as the result of a power failure),
a duplicate IP address exists and a conflict occurs.
Note For 2.4-Ghz radios, the IP address is set on the Radio Internal Identification page. For the 5-Ghz radio,
the IP address is set on the Radio Module Identification page. You must configure each radio separately.