By now you’ve probably heard quite a bit about the newest generation of Wi-Fi, 802.11ac. I’ll save you the gory details, just know it’s about 3x faster than 802.11n and will help to improve the capacity of your network. Jameson Blandford and I were recently guests on the No Strings Attached Show podcast with Blake Krone and Samuel Clements (Click to listen to the podcast).
I wanted to follow up the podcast with a blog to go over considerations for deploying, testing, and tuning 802.11ac.
Considerations for deploying 802.11ac
The first question you’ll want to ask yourself, is, if your switching infrastructure can handle 11ac? The answer probably is, yes. The things to consider are the port speed and power-over-Ethernet (PoE) capabilities. You’ll want the access point to have a gigabit uplink to the switch. Each 11ac access point could potentially dump several hundred megabits per second of traffic onto your wired network. It’s also not a bad idea to have 10 Gig uplinks on your access switches to distribution or your core. If you have even just a couple access points on a single access switch, you may quickly find yourself wishing you had 10 Gig uplinks.
Next you’ll need to consider how you will power the access points. If you are like the majority of our customers, you will use PoE from your switches. While 11ac access points require 802.3at (PoE+) for full functionality, the Aironet 3700 will run happily on standard 802.3af PoE. In fact, it remains 3 spatial-streams on both radios, so performance does not suffer because you have a PoE infrastructure.
Will you deploy 80 MHz channels? Read More »
Tags: 11ac, 11n, 802.11, 802.11ac, 802.11n, access point, Aironet, chanalyzer, cleanair, deploying, Enterprise, gigabit, infrastructure, macbook, metageek, mobility, network, network engineer, networking, omnipeek, performance test, performance testing, podcast, PoE+, Prime Infrastructure, spatial stream, Testing, tuning, wi-fi, wifi, wild packets, wireless, wireshark
As our team has prepared for Educause 2013 this week, we have been talking a lot about technology in higher education and how it’s impacting colleges, universities, students and staff. Of course, robot soccer was not the first thing that came to mind, but it’s a great example of how different technologies are changing education forever.
Bowdoin College, which you may remember from last year’s #1 Most Connected College, is one of my favorite case studies because it points out that people have to TRUST technology for it to really be effective. Trust is a big word, really – I know I’m not the only person who is a little gun shy when I think about updating my phone to a new software version. So, when a professor has a class full of students and says “let’s all stream this video right now”, it’s important that it actually works – or professors risk losing student attention, losing time and facing maximum frustration levels.
Read More »
Tags: byod, campus network, cleanair, cloud, edu13, educause, ISE, NCSAM, robocup, secure access, security, wireless
Last week, we announced at Interop-NY our newest Indoor Access Point, the Aironet 3700 Series. This access Point includes an integrated 802.11ac radio and is the first and only access point to support a 4x4 MIMO on 802.11ac. This latest Wi-Fi Standard will provide wireless networks better performance and coverage, and address the demand for client access including 802.11ac enabled clients. Whether you are in Higher Education, K-12, Healthcare, Manufacturing, Retail or other verticals, we are seeing our customers across industries face the same challenges: more users coming onto the network, more users bringing more devices, more devices that are only wireless connectivity (no Ethernet port), more security, OS and application updates on each of those devices. All this drives the larger problem of high density.
Enter the Cisco HD Experience Technology. Available on the new Aironet 3700 Series Access Points, the Cisco High Density Experience or “HD Experience” Technology is a suite of solutions serving up a feature set designed specifically to alleviate the introduction of more clients, bandwidth hungry applications and high density network strain in order to provide an unparalleled user experience.
Here are the top 7 facts to know about Cisco HD Experience Technology:
1. HD Experience Technology is a suite of solutions only available on the AP3700 that helps OPTIMIZE performance, mitigation, scalability and roaming for High Client Density networks
2. HD Experience is a hardware-based solution on a WiFi chipset designed BY and FOR CISCO. This is *not* software features based on merchant silicon WiFi chipset. HD Experience includes…
3. CleanAir 80 MHz, where Cisco fundamentally retooled the award-winning CleanAir technology to provide the same level of granularity and accuracy of RF interference detection and mitigation across 802.11ac’s 80 MHz bandwidth…but it also detects and mitigates for 802.11a/b/g/n clients as well. Read More »
Tags: access point, Cisco, cleanair, ClientLink, HD, high density, network, rf, roaming, technology, wi-fi, wifi, wireless
Having just moved into a new house, my wife and I are looking to see how all our old furniture can be re-used -- with her eye on the best design (she’s a designer by trade), and my eye on cost. We’ll end up somewhere in the middle I expect, slightly geared towards ‘design’ if past experience is anything to go by!
An example of Vitra design -- the VitraHaus
Swiss furniture manufacturer Vitra pulls off both objectives -- providing customers with great design, AND managing to reduce cost in the organization, How? With Cisco of course!
Take a visit across the Swiss border into Germany and you can visit to the VitraHaus location, its flagship store. Visiting Vitrahaus is like taking a trip through design history, but it also offers the opportunity to encounter the work of leading contemporary designers. Furnishings and objects from the Vitra Home Collection are arranged in a variety of settings for both living and working.
Communications and collaboration are central to bringing these concepts to life. Vitra has been partnering with Cisco for over a decade, evolving its IT infrastructure and expanding wireless LAN deployments. The biggest concentration of wireless access points, more than 70, is at Weil am Rhein. The latest stage of that IT strategy intends to make wireless a key enabler for business transformation.
“Improving guest Wi-Fi access was very important,” says Marco Gersbacher, head of IT infrastructure services at Vitra, “while we also wanted to make sure the business was fully prepared for bring-your-own-device.”
Although Vitra had no formal bring-your-own-device (BYOD) policy, a growing number of employees were using personal smartphones and tablets alongside company laptops in the workplace.
Vitra Style -- style is pervasive in all that they do.
This trend created problems with device recognition and password reset requests. Certain devices could connect only over the wired network, others just to Wi-Fi, and some not at all. So, a robust BYOD framework was a strategic priority. Without visibility of devices, however, the company was unable to guarantee network performance and security.
A validated Cisco® Borderless Network design has helped enable Vitra unify access across all network domains: wired, wireless, and VPN. The solution was installed by NextiraOne and includes the following components: Read More »
Tags: anyconnect, bring your own device, byod, cleanair, design, Vitra case study, Vitra networking
The previous blog on CleanAir went in depth on how MSE uses CleanAir information to locate interferers and the impact zone for each interferer. This blog takes a step back and gives an overview of the CleanAir technology.
How Interference Affects Your WiFi
802.11 devices operate in the 2.4GHz and 5GHz unlicensed bands. These are unregulated and experimental bands. As such, there are way more non-802.11 devices, including but not limited to cordless phones, video cameras, microwave ovens, Bluetooth headsets, DECT phones and even X-Boxes. Now even more devices are coming out that emit in these bands. These devices interfere with your WiFi network since they don’t work cooperatively with 802.11 devices, causing reduced network capacity and coverage, poor quality of voice and video, and link failures.
When an 802.11 device is ready to transmit and it senses interference, it will hold off transmission until it is finished. If it is in the middle of a transmission where it has sent a packet and never receives an acknowledgement, then it will try to send the packet again. Issues like these impact the throughput and capacity of your Wireless Network. An interferer like a microwave oven, which emits interference on a 50% Duty Cycle, will reduce the throughput by 50 percent. In the case of an interferer like a video camera, which emits interference at 100% Duty Cycle, when seen at Access Point above CCA threshold will stop the Access Point from beaconing. Due to this clients will not attempt to associate. Read More »
Tags: cleanair, detection, interference, location, location analytics, location based services, location services, location-based, mobile, mobility, municipal, nice, outdoor, services, wi-fi, wi-fi analytics, wifi, wifi analytics, wireless