Understanding hot standby – Rockwell Automation 1783-WAPxxx Stratix 5100 Wireless Access Point User Manual User Manual

Page 529

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Rockwell Automation Publication 1783-UM006A-EN-P - May 2014

529

Configuring Repeater and Standby Access Points and Workgroup Bridge Mode

Chapter 20

6. Designate the SSID as the SSID that the repeater uses to associate to other

access points.

infrastructure ssid

7. Enter a pre-shared key for the repeater.

Enter the key by using either hexadecimal or ASCII characters. If you use
hexadecimal, you must enter 64 hexadecimal characters to complete the
256-bit key. If you use ASCII, you must enter from 8…63 ASCII
characters, and the access point expands the key for you.

wpa-psk { hex | ascii } [ 0 | 7 ] encryption-key

8. Return to privileged EXEC mode.

end

9. (Optional) Save your entries in the configuration file.

copy running-config startup-config

Understanding Hot Standby

Hot Standby mode designates an access point as a back up for another access
point. The standby access point is placed near the access point it monitors,
configured exactly the same as the monitored access point. The standby access
point associates with the monitored access point as a client and sends IAPP
queries to the monitored access point through both the Ethernet and the radio
ports. If the monitored access point fails to respond, the standby access point
comes online and takes the monitored access point’s place in the network.

Except for the IP address, the standby access point’s settings can be identical to
the settings on the monitored access point. If the monitored access point goes
offline and the standby access point takes its place in the network, matching
settings insures that client devices can switch easily to the standby access point.

The standby access point monitors another access point in a device-to-device
relationship, not in an interface-to-interface relationship. For example, you
cannot configure the standby access point’s 5 GHz radio to monitor the 5 GHz
radio in access point alpha and the standby’s 2.4 GHz radio to monitor the 2.4
GHz radio in access point bravo. You also cannot configure one radio in a dual-
radio access point as a standby radio and configure the other radio to serve client
devices.

If the monitored access point malfunctions and the standby access point takes its
place, repeat the hot standby setup on the standby access point when you repair
or replace the monitored access point. The standby access point does not revert
to standby mode automatically.

TIP

Hot standby mode is disabled by default.

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