Editor’s Note: This is the second of a four-part deep dive series into High Density Experience (HDX), Cisco’s latest solution suite designed for high density environments and next-generation wireless technologies. For more on Cisco HDX, visit www.cisco.com/go/80211ac. Read part 1 here. Read part 2 here.
The 802.11ac wireless networking standard is the most recent introduction by the IEEE (now ratified), and is rapidly becoming more accepted and reliable industry standard. The good news is that the client and vendor adoption rate for 802.11ac is growing at a much higher pace as compared to when 802.11n was introduced back in 2009. There has been an accelerated growth seen with the mobile and laptop devices entering the wireless market embedded with an 802.11ac WiFi chipset. Unlike in the past, laptop, smartphone and tablet manufacturers are now acknowledging the fact that staying up to date with the latest Wi-Fi standards is as important for the bandwidth hungry users as having a better camera or a higher resolution display.
With the launch of the new 802.11ac AP 3700, Cisco introduces the Cisco HDX (High Density Experience) Technology. Cisco HDX is a suite of solutions aimed towards augmenting the higher performance, more speed and better client connectivity that 802.11ac standard delivers today.
ClientLink 3.0 features as an integral part of Cisco HDX technology designed to resolve the complexities that comes along with the new BYOD trend driving the high proliferation of 802.11ac capable devices.
So what is ClientLink 3.0 technology and how does it work?
ClientLink 3.0 is a Cisco patented 802.11ac/n/a/g beamforming technology Read More »
Tags: 802.11, access point, antenna, AP, beamforming, cell size, Cisco, client, client connectivity, ClientLink, device, downlink, hardware, HD, HDX, high density, IEEE, Industry Standard, LAN, mobile, mobility, network, rf, smartphone, software, solution, tablet, technology, wi-fi, wifi, wireless, wlan
Editor’s Note: This is a guest post by Joe Rogers, Associate Director of Network Engineering for the University of South Florida (USF). Hear Joe speak about his experiences with next-generation wireless in high density environments on next Tuesday’s webinar: ”Migrating Enterprise Networks to 802.11ac” at 10am PST (Dec 17) (Register here)
Joe Rogers is the Associate Director of Network Engineering for the University of South Florida. He is a graduate of USF’s Computer Science and Engineering program and has worked as a network engineer at USF for the past 20 years. He is currently responsible for all aspects of USF’s network which provides connectivity to over 100k devices across three campuses. He’s held a CCIE routing and switching certification since 1999. When not working, he’s an avid mountain biker (if you can call it “mountain” biking when you live in Florida).
Universities face some of the most complex design challenges in wireless networking. Our user population is highly mobile, bandwidth-hungry, and often simultaneously using at least two wireless devices in rooms with hundreds of their classmates. The wireless network isn’t simply a convenience to them. It’s critical to their educational success as many of the students are taking tests or working on assignments across the network.
At the University of South Florida, we support over 20,000 concurrent wireless users on our network of over 4,000 access points. We have more than 90,000 unique devices registered this semester. Our biggest challenge is designing the wireless network for the device densities in our large classrooms and popular study areas. In these locations, we often have a thousand devices in a few hundred square feet of space.
We heavily rely on band select to place as many devices as possible on 5Ghz where more channels are available. Unfortunately many devices such as older tablets and smart phones simply don’t have an 802.11a/n radio. So we must carefully RF engineer the environment with smaller cells to provide the necessary coverage density. Read More »
Tags: 5Ghz, 802.11, 802.11ac, band select, bandwidth, Cisco, college, guest blog, high density, higher education, migrating, network, network engineer, next-generation wireless, rf, Smart phone, student, tablet, university, user population, webinar, wireless
The guys from No Strings Attached Show just published their podcast we sponsored featuring Jim Florwick yesterday and already the verdict is in: Jim Florwick is awesome.
For those of you who haven’t had the chance to download the podcast yet (What are you waiting for?! Download podcast) or you have a few extra minutes to scan a short blog to decide whether or not you want to download the podcast, I asked Jim what his key takeaways are when it comes to high density design.
Here are Jim Florwick’s 6 tips for HD network design (for the REAL meat, tune into the podcast):
- High density client environments are quite common with today’s users being very connected – today’s users are always connected. With planning, this can be managed quite successfully. Understand the limitations, be aware of how legacy requirements will affect the outcome, and set expectations accordingly. Efficiency is key and removing some of the blockers (legacy) first is essential.
- 802.11ac represents another quantum leap forward in technology and will eventually allow a much richer user experience. It is a transition that must be managed and balanced against your current mission requirements. Evaluate channel/bandwidth requirements carefully. Monitor the mix of client devices operating in your environment and update frequently. Read More »
Tags: 11ac, 802.11, 802.11ac, access point, antenna, bandwidth, Cisco, CLI, client environment, design guide, HD, high density, high density design, high density network, jim florwick, legacy requirements, Mhz, Network design, no strings attached show, OBSS requirement, podcast, RRM; DCA algorithm, technology, wireless design
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
We’re just a few days away from joining the record-breaking attendance at Cisco Live! in Orlando!
It’s been a busy week with the Internet of Everything and Connected Mobile Experiences project launch in Nice, the SITA Air Transport IT Summit in Brussels, and the recent news that our very own Cisco Aironet 3600 Series AP is the first publicly announced WFA 802.11ac certified commercial enterprise access point--that was a mouthful! Next week is busy too: ISTE in San Antonio, HITEC in Minneapolis, and, of course, Cisco Live! in Orlando.
This is Part 2 of the Mobility Guide to Cisco Live! Orlando: Whether you’re in person or not, follow the whole thread on Twitter at #CLUS and follow @Cisco_Mobility for specific coverage.
In part I of the mobility guide, I gave a laundry list of some very special mobility-focused sessions in Orlando--here they are split out by days, plus some fun activities you should make sure not to miss!
8:00 am RF Standards Update, Brian Hart
10:00 am Beyond BYOD, One Policy, One Management, One Network, Prashanth Shenoy
10:00 am AND 1:00 pm CCNA Wireless, Master the 802.11 protocols, Jerome Henry
3:30pm Solutions Keynote: Enterprise Networking presented by Rob Soderbury [editor's note: it's MONDAY not Tuesday--corrected in the last post] Read More »
Tags: #CLUS, 802.11, byod, Cisco, cisco live, customer, mobility, orlando, rf, wireless