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 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.
With any new technology comes a new set of obstacles to overcome. 802.11ac is no exception. Last week we talked about CleanAir for 802.11ac and why spectrum intelligence still matters. Another challenge is scalability. In this post I will give you some details on new HDX feature, Turbo Performance, which allows the AP 3700 overcome common scaling issues to scale amazingly well.
What’s Different with 802.11ac?
802.11ac means higher data rates, which means more packets per second (PPS). There are three reasons for more PPS with 11ac: wider channels, increased modulation and increased aggregation. Channel width doubled to 80 MHz, modulation increased from 64 QAM to 256 QAM, and aggregation increased from 64k to 1MB!
With 802.11n, an AP might have had to push 30,000 1500 byte packets per second through the APs data plane. Today with 802.11ac that could now be 75,000+ PPS. More PPS means more load on the APs CPU, so to really keep up with the demands of 802.11ac, we needed to go back to the drawing board. Read More »
Tags: 802.11ac, access point, aggregation scheduler, antenna, AP, byte, Cisco, cpu, data plane, Enterprise, HD, HDX, high density, increased aggregation, modulation, multi-client, network, networking, packet scheduler, packets per second, performance, pps, qam, radio, scale, technology, wi-fi, wifi, 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
Today, you may be able to walk into in a convention hall, or university classroom, or baseball park and connect your mobile device. Maybe. But you’re likely competing for that connection with all the people around you. Can you join an online conversation while attending a large class at school? Can you view a live stream of the keynote address while sitting in a convention hall, or see the homerun hit while in line at the beer stand?
Today, chances are the answer is no. But that’s changing.
The reason that the answer is no, today, is that you’re sharing a finite cellular or Wi-Fi connection with all your fellow consumers in that train, convention or stadium. If you’ve got 50,000 fans, and off-the-shelf access points with “floodlight-like” unidirectional coverage areas, you’re likely sharing your one AP with 1000 other people! And if you simply put more of those APs in, the overlapping airwaves would all be competing for the same limited number of Wi-Fi channels. And when that happens, performance gets much, much worse.
But luckily, Cisco is announcing a brand new solution that addresses this issue, called Cisco Connected Stadium Wi-Fi, and it’s debuting in the Sporting Kansas City stadium. We’ve got the new Aironet 3500p access point with a very special antenna with a directional, “spotlight-like” coverage pattern. This means each AP has minimal interference with the AP next to it, and is shared by fewer fans. Everyone gets a bigger piece of the pie – and therefore more predictable levels of performance to run cool new video apps. Translation: twice as much video-viewing, iPad-carrying performance for you and me!
Read More »
Tags: antenna, stadium, wi-fi, wireless access points