VIEW Configuration Guide: Cisco WLAN Controllers (Virtual, Modules, and Standalone) with APs 1725-86192-000_AA.docx August 2013 7 ** Only Release 3.0 capable Spectralink 8020/8030 handsets support WPA2-Enterprise, Wi -Fi Standard QoS, and CCXv4 (Cisco Compatible Extensions). Release 3.0 capable handset types connect to PBX’s. The heist 2 flash game. Last fall, I blogged about or Access Point Stateful Switchover introduced with the AireOS 7.3 release whereby if your wireless LAN Controller fails due to some hardware failure, thousands of Access Points fail over sub-second to the standby controller! This is possible due to continuous synchronization of CAPWAP states, Configuration Changes, Radio Channel and Power, Roaming Keys and Access Point licenses between the two Controllers. This means even if the administrator changes the configuration, channel plans or the clients roam and the primary controller fails; the Access Points will simply fail over in a stateful fashion to the secondary. In this blog, I will share details on the upcoming enhancements to High Availabilty with the 7.5 release. In the upcoming AireOS 7.5 release, we take High Availability to the next level with two critical enhancements. 1. Today, after Access Points fail over from the primary to the standby controller, each client tries to re-authenticate and the standby controller then checks against its CCKM database whether the client has already authenticated. At the rate of several tens of authentications per second, it can take anywhere from zero to a few hundred seconds for the tens of thousands of clients that are connected to a controller to re-authenticate. The client stateful essentially eliminates this downtime with sub-second failover. Thus the total downtime that any user running a voice-call or Citrix session experiences is 2-3 seconds that the application requires to reconnect. In the AireOS 7.3 release, the two controller appliances need to be co-located and connected with an Ethernet cable. While adequate for the majority of deployments, others prefer to keep the standby controller in another datacenter or another building within the same campus environment. The AireOS 7.5 release allows you to deploy the standby controller in the L2-adjacent separated environment from the primary controller so they share the management IP address. For more information about High Availability, here’s a short animated video: You can also reference the deployment guide and the FAQ. • • • • • • • • Legal Disclaimer Some of the individuals posting to this site, including the moderators, work for Cisco Systems. Opinions expressed here and in any corresponding comments are the personal opinions of the original authors, not of Cisco. The content is provided for informational purposes only and is not meant to be an endorsement or representation by Cisco or any other party. This site is available to the public. No information you consider confidential should be posted to this site. By posting you agree to be solely responsible for the content of all information you contribute, link to, or otherwise upload to the Website and release Cisco from any liability related to your use of the Website. You also grant to Cisco a worldwide, perpetual, irrevocable, royalty-free and fully-paid, transferable (including rights to sublicense) right to exercise all copyright, publicity, and moral rights with respect to any original content you provide. The comments are moderated. Comments will appear as soon as they are approved by the moderator. – For the first time ever, the untold story behind the infamous gang will be told through an animation woven into gameplay! Download game naruto ppsspp iso.
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