Last week AirTight launched its 802.11ac webinar series. Throughout this six-part series, we will be touching on various aspects of the 802.11ac wireless platform. The first session touched on the Essentials of 802.11ac.
Upcoming Webinars: 802.11ac Deep Dive & Beyond
We will be continuing the series next week with "802.11ac Deeper Dive." Stay tuned for later installments in our 802.11ac series, where we'll be discussing:
- "Is 802.11ac Right for Your Network?"
- "802.11ac Deployment Best Practices"
- "802.11ac Channel Capacity Planning"
- "802.11ac Network Optimization"
Our speaker, Robert Ferruolo, has over 20 years of experience in networking and over 10 years in the wireless industry. What makes Robert qualified to speak on 802.11ac? Beyond his extensive tenure in the wireless industry, Robert is an 802.11ac enthusiast, has been conducting competitive performance testing for over 8 years, and has authored numerous 802.11n and 802.11ac best practice guides.
If you'd like to receive more info on any of these future discussions, please send your questions to [email protected]
Recent Webinar: 802.11ac Esssentials
Below, you'll find the link to the recorded presentation, a copy of the slide deck, and questions from the event, along with our answers.
Recording: 802.11ac Essentials: A Technical Overview (Free registration)
Q&A from 802.11ac Essentials Webinar
Q: If you deploy 802.11ac in a greenfield environment, how do you support clients that only work in the 2.4 GHz band?
A: In 802.11ac greenfield deployments, most 802.11ac APs (including the AirTight C-75) are dual radio, with support for 2.4 GHz/802.11n on one radio and support 5 GHz/802.11ac on the other radio. This allows WLANs (SSIDs) to be provisioned on both the 2.4 GHz and 5 GHz bands, ensuring that 2.4 GHz only devices will continue to have service.
Q: 5 Ghz devices are not allowed in Israel. What do you recommend?
A: There are only a handful of 5 GHz channels available for use in Israel. Here is a link to the list of Wi-Fi channels on Wikipedia for reference: http://en.wikipedia.org/wiki/List_of_WLAN_channels
Considering the limited 5 GHz spectrum available in Israel, the recommendation for most networks installed there would be to use 20 MHz channels in order to limit the adverse effects of CCI (co-channel interference) and ACI (adjacent channel interference). We will be covering this topic in a future session of this 802.11ac webinar series (802.11ac Deployment Best Practices).
Q: Is 802.11ac appropriate for an industrial application or utilities application?
A: 802.11ac can have benefits even in industrial environments, where high throughput or high client density are not much of a concern. Lab testing and production network benchmarking have shown that even legacy and 802.11n devices tend to perform better with 802.11ac APs. This boost in performance can be up to 40 %, using only legacy and 802.11n devices, compared to what 802.11n APs can provide. This gain is often attributed to better radios, DSPs, antennas, faster CPUs and more memory in the newer 802.11ac APs. And considering that there is little or no price difference (as is the case with the AirTight 802.11ac C-75), installing 802.11ac APs in industrial environments is a good way to go.
Q: Is the C-75 integrated with the current cloud portal so it can be configured alongside the C-50 and C-55 APs?
A: The answer is yes. The thing to keep in mind is that each AP model will have its own device template. And just like with the C-55, with its own device template containing configuration specifics for C-55s, the C-75 will have its own device template, where configurations specific to C-75 would be made.
Q: Does the C-75 require more power than the C-50 or C-55 due to extra antennas?
A: The C-75 is fully functional using 802.3af power. So there is no need to upgrade to PoE+.
Q: Can you do channel aggregation in 802.11ac?
A: If you are referring to the ability to use wider channels (e.g. 80 MHz) then the answer is yes.
Q: What about degradation of coverage by each AP when using only 5 GHz, or TCO (Total Cost of Ownership)?
A: Regarding your chat question about 5 GHz and signal degradation, it is true that if you design networks for 802.11ac, versus for 2.4 GHz, you will likely need more APs as 5 GHz signals do not propagate as far as 2.4 GHz signals do. From that perspective, the 802.11ac TCO will be somewhat higher than 2.4 GHz. But from a productivity standpoint, 802.11ac APs have the potential to enable more work to be done for a given period of time (compared to 802.11n/2.4 GHz). Something else I like to factor in.
We will be covering AP placement, density, signal strength, etc. in the upcoming 802.11ac Deployment Best Practices session. The next webinar in the series is 802.11ac Deeper Dive where we will be taking a closer look at QAM, beamforming, MU-MIMO, etc.
Q: Will APs with this standard be able to change the channel dynamically in order to have the best performance?
A: The answer is yes, the 802.11ac C-75, as well as other AirTight APs, can dynamically change channels to avoid interference from neighboring AirTight APs or non-AirTight APs.
Q: How does the new 802.11ac standard effect the AirTight WIPS system ?
A: The 802.11ac C-75 is able to detect and neutralize threats sourced by legacy (802.11a/b/g), 802.11n and 802.11ac devices. If C-75s are deployed, you have a comprehensive WIPS solution that can handle threats from all types of 802.11 devices.
Join Us for the Next Event!
Please join us for our upcoming webinar on June 24th at 11am EST and 9pm EST on “802.11ac Deeper Dive.” In this 30 minute webinar, you will learn about:
- Channel Availability
- Frame Aggregation
- Error Correction
See you on the webinar!