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Ava 500 IT Administrator's Guide
Wireless Configuration
Utilizing video over WiFi is one of the most demanding tasks for a wireless network. A number of practices are
recommended to successfully deploy a wireless mobile video device such as the Ava 500. iRobot recommends
that a separate SSID be created on the existing network to facilitate setting policies and frequency use to optimize
the Ava 500's operation.
Since video requires significant bandwidth for optimum quality, iRobot strongly recommends that 5 GHz
frequencies be used. 2.4 GHz should not be used unless there is no other option.
Because of a bug in the Cisco 5 GHz Access Point firmware that causes difficulty in roaming from
some channels to channels 64, 48, 44, and 40, iRobot suggests that the customer's wireless
deployment be configured not to use those four channels.
In order to achieve the best user experience during an Ava 500 video conference, some wireless network settings
may need to be optimized to support VoIP. For a Cisco network, Cisco recommends the Enable Session Timeout
setting should either be turned off or the timeout period extended, for example to 24 hours. The document
sources and details are provided in the Cisco section below.
A number of QoS settings and best practices should be implemented when dealing with a wireless network that
supports video. These are manufacturer-specific and are detailed in documents described in the following
sections. Finally, iRobot recommends that a wireless site survey be performed, according to the manufacturer's
recommendations, before the Ava 500 is installed, to detect any problems that may need to be resolved.
Aruba
The wireless site survey process is detailed in the "Indoor 802.11 Site Survey and Planning" guide version 1.0
found here:
http://www.arubanetworks.com/wp-content/uploads/Indoor80211n_2012-05-31.pdf
While all "high bandwidth" recommendations in that document should be followed, an important excerpt is this:
Capacity Model (High Bandwidth) - The capacity model is for dense deployments with high device counts and
traffic rates. A capacity-based deployment might consist of APs placed roughly 45 to 60 feet (approx. 13.75 to
18.25 meters) apart running at 25-50% or 50-75% of power. In general, the transmit power of the AP should
be set to match that of the least-capable device in the network. If the requirement is a "desk-top like"
experience for employee laptops, where the employee can run multiple applications simultaneously, the site
requires a capacity-based deployment.
Aruba's guide to QoS settings is entitled: "Bringing QoS Over Wireless LAN into Focus," and is found here:
http://www.arubanetworks.com/pdf/technology/whitepapers/WP_BringQoSWireless.pdf
Cisco
Cisco wireless site survey guidelines are detailed in the "Site Survey Guidelines for WLAN Deployment" guide
found here:
http://www.cisco.com/image/gif/paws/116057/116057-site-survey-guidelines-wlan-00.pdf
Version 1.2 – 012415
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iRobot Proprietary
Data Communications and Security
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