There are only two front-runners in Gartner’s 2014 Magic Quadrant for Unified Communications: Microsoft in the top spot, representing the best-in-class multi-vendor school, trailed by Cisco, the poster child for single-vendor solutions..Read more...
After taking a second look at a recently posted case study about Los Angeles Unified School District’s new 1:1 computing initiative, I counted over fifteen references to security and policy compliance. While a heavy emphasis was placed on an optimized learning environment, so was the idea of No Trust enterprise-class mobility.
Last week, we released ArubaOS 6.4.2 for Mobility Controllers. This release adds a significant new feature - Web Content Classification - to the already powerful set of controls included as part of the Policy Enforcement Firewall. Let’s take a look at what it does, and how to use it alongside our application visibility and control, or “AppRF”.Read more...
As I’m GoKarting my MINI around the city, I always gravitate towards the fastest or least congested lane. I'm the same way when it comes to Wi-Fi, always wanting to go faster.
Contending with Wi-Fi interference is like being stuck behind a slow driver in the fast lane. You can deal with it by honking, flashing your high beams or tailgating – none of which are recommended. Or you can simply change lanes and go around the problem.Read more...
The community has been providing some very informative tutorials for our Mobility Hero Contest. These combined with tutorials posted by Aruba Employees give us amazing insight in how to do many things with ClearPass. See what 5 tutorials made my cut.Read more...
With Aruba having the industry's only complete 802.11ac portfolio in the market, you can rightsize your WLAN by mixing & matching the best AP's for each area of your deployment based on your requirements.
The addition this month of these new 210 Series Access Points complete the portfolio of 4 platforms, enabling you to select the AP's to best fit your performance, density and cost requirements.
It may seem counter intuitive that maintaining the configuration of another firewall inside your network will save you time and make for a simpler, more scalable design, but bear with me for a few minutes and I will explain how Aruba’s PEF firewall and related features do just that.Read more...
If your guest network purely uses a shared key or an open SSID, you can forget about security. Anyone can connect when they want, and you have no record or way to enforce restrictions.
Can you imagine the scale and complexity of rolling out iPads or Chromebooks to 650,000 students across 900 schools? Not an easy task, but if Los Angeles Unified School District (LAUSD), the second largest school district in the U.S., can do it, any K-12 can!!
The district’s larger goal was to provide anytime, anyplace learning to each student. According to Shahryar Khazei, Deputy CIO of LAUSD, this meant “not only putting powerful tools in the hands of our students and teachers, but also building the appropriate infrastructure, including campus Wi-Fi, to support their use.”
Phase-1 of LAUSD’s one-to-one rollout was kicked off with 30,000 iPads across 47 schools.
Here are some tips & tricks from the LAUSD deployment that can be applied to school districts of all sizes.Read more...
The Airheads conferences have so much great information and many great breakout sessions. This makes choosing the top 5 a monumental task, but we tackled the task and here is the Top 5 Airheads Presentations.Read more...
You don’t want to get caught asleep at the wheel with poor Wi-Fi experiences and facing a social media train wreck that could hinder recruitment, student satisfaction, and learning outcomes.
#GenMobile is redefining the “office” as we know it. The notion of a place of work will still be around; however the traditional office is bound for extinction. It is happening faster than we think and about a thousand IT professionals across the globe just validated it.
Last week Gartner muttered the word “Abracadabra,” and with a flash of light and a puff of smoke, the 2014 Magic Quadrant for Wired and Wireless LAN Infrastructure appeared. And it was magical. Well, sort of.
Login and Passwords fail
If you’ve conquered texting you’ll attest to the fact that bigger keyboards made your thumbs come alive. A few typos never stopped you from getting the message out. Unfortunately, using that same keyboard to enter login and passwords to access enterprise networks and applications requires repeated accuracy and patience.
The BITS, BYTES and WIFi ....
There is a general misunderstanding around bits and bytes with most end users, especially when trying to measure WiFi performance.
Mbps (MegaBITS) are often referenced to measure transmission speeds.
Example: Comcast package
Example: speed test
Did you know 802.11ac’s gigabit data rate requires devices to be very close to the AP?
Newer MCS8 and MCS9 modulations in 802.11ac offer increased performance and require higher signal-to-noise ratios. This means clients must be close to an AP at all times. But isn’t this a basic requirement for any wireless network?
Making sure that clients always associate with an AP with the strongest signal is not as easy as it sounds because clients make their own roaming decisions.
Now don’t go geek and start writing a mobile app that’ll find the closest AP. Chill! Aruba’s patented ClientMatch technology gets rid of the old sticky client problem and lots more.
To see whether this technology makes a difference in roaming, engineers at the testing firm Novarum conducted a high-density roaming evaluation between Aruba and Cisco.
Novarum painstakingly recreated a high-density mobile environment using 75 802.11ac clients and three 3x3:3 802.11ac APs – Cisco 3702i and Aruba AP-225.
Results from the test clearly show that Aruba offers significantly better roaming performance, thanks to system-level capabilities like ClientMatch. Without it, the network is blind to the needs of its clients.
Help! I’m stuck
According to the test report, clients associated with an AP in a lobby and then roamed to an open space similar to a lecture hall, where clients could hear all the three APs.
As clients roamed, they were distributed pretty evenly across the three Aruba APs. But clients on the Cisco WLAN didn’t associate with a better AP as they roamed. Most got stuck on the first AP.
Aruba ClientMatch was a huge differentiator in this test. It continuously gathers signal information from roaming clients and uses it to steer each one to the closest AP.
Overall system performance
Overall aggregate performance for Aruba was consistently 39%, higher than Cisco. The results are a bit deceiving for Cisco as one client got 120Mbps, which made it’s own roaming decision. All of the other clients struggled for airtime because they were stuck to the first AP.
Per-client throughput vs. number of clients
With Aruba, most clients enjoyed more than 4 Mbps throughput. With Cisco, more than 70% of the clients got less than 4Mbps.
Lesson learned: 802.11ac alone cannot optimize client performance. You need technologies like ClientMatch, which can boost client performance by making sure they associate with the best AP as they roam. And if your clients get stuck, you’re probably using a Cisco AP.
For more detail on the actual testing take a look at the Novarum report or feel free to stop by the Proof of Concept (PoC) lab, Sunnnyvale CA.
In 2002, Aruba took on the Tasman Family by forming a company determined to deliver Wi-Fi as an alternative to the wire.
Taking on the big guys is a relentless task and that’s why Novarum’s 802.11ac performance report is a breath of fresh air. Free of strong-arm tactics, this report captures the performance differences in a real-world office environment between Aruba’s AP-225 and Cisco’s Aironet 3702i, 11ac Access Points.
High-Density Throughput Test: Aruba is 2x Faster than Cisco.
When properly designed, three-wheeled vehicles can deliver superior handling, performance, and greater fuel efficiency compared to their four-wheeled counterparts and greater stability and safety than their 2 wheeled-counterparts.
However, not all designs are equal. When improperly designed, three-wheeled vehicles can be tragic. Take the Reliant Robin for example. A three-wheeled design catastrophe only a mother could love. Watch the Reliant Robin in action.
These same design principles also hold true for Access Points. Like a car, an AP’s performance is tied to how well the AP is designed and how well the underlying components work together to provide an output that is greater than the sum of its parts.
Aruba’s AP-205 was purpose-built to bring the performance gains of 802.11ac at a cost-effective price point to high-density environments consisting predominately of single and dual-stream clients.
To validate the AP-205s design advantages in a high-density environment we decided to test it against Cisco’s brand new AP-2700, which is a 3x4:3SS AP. When we tested Cisco’s AP-3700, which boasts a 4th antenna, it didn’t come close to matching the performance of Aruba’s 3x3:3 AP-225. We wondered if the AP-2700 had similar design flaws and would suffer the same fate as the AP-3700.
Multi-client TCP Throughput Test
In this sixty-client test, the Aruba AP-205 delivered 46% faster downstream throughput and 33% faster bidirectional throughput than Cisco’s AP-2700.
Small Packet Throughput Test (VoIP)
In this thirty-client test, we used packet sizes that are common in today’s networks running VoIP and latency sensitive applications. The AP-205 delivered 4.3x more traffic with 256B packets and 2.8x with 512B packets than Cisco’s AP-2700.
Multi-Client 3 Stream Throughput Test
To put the AP-205 to the ultimate test, we decided to test with only 3-stream clients. Remember, the AP-205 is a 2x2:2SS and the Cisco 2700 is a 3x4:3SS. As you can see below, the AP-205 outperformed the AP-2700 by delivering 40% faster downstream throughput in a test that favored a :3SS AP.
Multi-Client Throughput Test using PoE
One of the design elements of the AP-205 was to deliver full 11ac performance in dense environments with 802.3af power. As shown in the chart below, the AP-205 delivered 45% greater throughput than the AP-2700 and none of the clients were starved nor hogged the air. With the AP-2700, over half the clients were starved of airtime and got less than 2Mbps. One lucky client got 43Mbps, but this came at the expense of other clients.
Performance is a function of product design and the underlying components. Adding a third-spatial stream to an AP is akin to adding a 3rd wheel to a vehicle. If it’s not properly designed, it can lead to instability and poor performance, as evident in the AP-2700s test results.
As you look to migrate to 802.11ac, be sure to take note of the devices on your network and don't be fooled by what's on the data sheet. Kick the11ac tires and if you happen to be in the Bay Area, be sure to stop by 1344 Crossman and see for yourself how the AP-205 outperforms Cisco’s AP-2700.
Test Bed Setup
The adoption rate of 802.11ac is outpacing 802.11n. The performance gains in 802.11ac, fueled in part by the demands of #GenMobile, are contributing to its rapid adoption.
802.11ac boasts theoretical gigabit speeds due to wider 80-MHz channels, faster 256-QAM and everyone’s favorite…beamforming. The first two are easy peasy, but beamforming, that’s pretty heady stuff.
At a high-level, beamforming is about providing a stronger signal to clients – more bars – to improve the client’s connection rate. While the concept of boosting client signal strength isn’t new, the industry finally standardized it in Wave 1 of 802.11ac and called it 11ac beamforming.
Aruba’s standards-based beamforming implementation involves a constant exchange of information between the client and AP to maximize the client receive signal. This is critical for improving wireless performance in dynamic RF environments with highly mobile clients.
All Aruba 802.11ac APs support standards-beamforming, thanks to Broadcom. Just about every 802.11ac device, including the Samsung Galaxy S4, MacBook Pro and MacBook Air, support beamforming. So we actually have a solution that works on the network and the client side.
You’d think something as standard as beamforming would be supported by everyone, but that unfortunately is not true. Too bad a few vendors picked Atheros chipset for their 802.11ac AP, which lacks beamforming. So some wireless vendors support proprietary analog version of beamforming (I’m telling you, it’s not standard beamforming).
Sadly, non-standard analog beamforming has some fundamental trade-offs that make it less effective in the real world.
Here’s what I mean. First, analog beamforming can’t accurately determine a client’s location so you can’t flex a beam to that client. Second, it’s a manual hit-and-miss process that involves tweaking antennas to steer RF beams at clients. Third, too much beam, too little MIMO.
We compared Aruba’s 802.11ac beamforming against non-standard beamforming in a simple rate-vs.-range test. The other vendor's performance at 15 feet is equal to Aruba’s performance at 120 feet.
Standard 802.11ac beamforming wins hands down.
Organizations often forget that their guest access portal can help leave visitors with a lasting impression. In fact, 46.1% of people say a website's design is the number one criterion for discerning the credibility of the company. ClearPass Guest makes going from black and white to full color easy. Better yet, why do-it-yourself? Aruba's Guest Portal Customization Service gives your guest "curb appeal" without the hassle.