Lan controller AIR-WLC4404-100-K9

Unanswered Question
Mar 11th, 2010

Does the 4404 100 AP lan controller come 

with the WCS software, or is that a seperate purchase?

How does this lan controller failover?  Does a backup controller need to be purchased?

Thank you!

I have this problem too.
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Leo Laohoo Thu, 03/11/2010 - 13:09

WCS is a separate purchase.

"Failover" is when you have more than one WLC or if you configure H-REAP,

When you have more than one WLC, when the WLC-A fails, the APs can swing to the next WLC that's been configured into them.  The downside is during the failover there's a 5-10 seconds of lost connectivity to the WLAN while the APs search for another WLC.

Configuring Failover Priority for Access Points
http://www.cisco.com/en/US/docs/wireless/controller/6.0/configuration/guide/c60lwap.html#wp1424902

When you configure H-REAP and, say, if you have only one WLC, when the WLC fails and the APs are not rebooted, the APs will function as if the WLC is still present.  This works even when you have VoWLAN.

H-REAP Modes of Operation Configuration Example
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a00807cc3b8.shtml

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