Editor’s Note: This is the last 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. Read part 3 here.
If you’ve been a long time user of Wi-Fi, at some point you have either observed someone encounter (or have personally suffered from) so called “sticky client syndrome”. In this circumstance, a client device tenaciously, doggedly, persistently, and stubbornly stays connected to an AP that it connected to earlier even though the client has physically moved closer to another AP.
Surprisingly, the reason for this is not entirely…errr…ummm…unreasonable. After all, if you are at home, you don’t want to be accidentally connecting to your neighbor’s AP just because the Wi-Fi device you’re using happens to be closer to your neighbor’s AP than to your own.
However, this behavior is completely unacceptable in an enterprise or public Wi-Fi environment where multiple APs are used in support of a wireless LAN and where portability, nomadicity, or mobility is the norm. In this case, the client should typically be regularly attempting to seek the best possible Wi-Fi connection.
Some may argue that regularly scanning for a better Wi-Fi connection unnecessarily consumes battery life for the client device and will interrupt ongoing connectivity. Therefore the “cure is worse than the disease”. But this is true only if the client is very aggressively scanning and actually creates the complete opposite of being “sticky”.
The fundamental issue with “stickiness” is that many client devices simply wait too long to initiate scanning and therefore seeking a better connection. These devices simply insist on maintaining an existing Wi-Fi connection even though that connection may be virtually unusable for anything but the most basic functionality. Read More »
Tags: 3G, 4G, access point, AP, beacon, cellular, client, connection quality, device, environment, experience, feature, HD, HDX, high density, IT, LAN, mobile, mobility, monitor, network, performance, retransmission, roaming, solution, sticky client, sticky client syndrome, usability, user, 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
Now that the Holidays are upon us, and we look forward to 2014, the Cisco Small Business team continues to raise the Small Business networking bar with the introduction of the all new Cisco RV325. This Dual WAN, 14-port VPN Router, provides all of the same performance, security and reliability of the RV320 launched last June. Both routers are perfect for fast-growing small businesses or branch deployments. So if you are looking for more ports in the same enclosure, the RV325 is the Small Business router to take a look at.
RV320 and RV325
Like the it’s smaller sibling the RV320, the RV325 is a perfect match with the Cisco Small Business SG300 Series Switches and WAP500 Series Access Points. As you saw from my last Blog, the WAP551 and WAP561 boasts a nice feature-set including Captive Portal and Single Point Set-up. The WAP 551/561 are controller-less Access Points meaning additional hardware is not required. The SG300 Series offers a nice blend of features at an affordable price and are designed Small Business. It has most of the features that can be found in today’s Enterprise-class Switches.
This formidable combination makes for the perfect solution for that many Small Businesses and Organizations can take advantage of. Add in our portfolio of award-winning Cisco Small Business Services, and you have a solution that all that guarantees a positive experience from Cisco Small Business Team.
One Option for this solution is the newly launched 200 Series of Smart Switches. There are four new models including 10-, 24-, 26-, and 50-port switches. These Full Power PoE Smart Switches are a great alternative as they offer a generous feature-set, solid performance and even greater affordability.
SG200 Series PoE Smart Switch
Happy Holidays and Happy New Year’s from the Team at Cisco Small Business.
Tags: application, Big Data, Cisco, cloud, data center, desk, ethernet, firewall, IoE, IPv6, mobile, network, performance, port, quality, rack, reliability, router, RV, security, small business, switch, technology, unified communications, WAN, wifi, wireless
Cisco always strives to innovate while meeting customer needs. Today we are proud to unveil the Cisco Nexus 3100 line of switches as part of our Unified Fabric Data Center portfolio. These highly scalable, power efficient, and flexible switches feature significant improvements in port density, programmability and VXLAN capable gateway functionality that are ideal for data center top-of-rack (ToR) deployment scenarios. As the second generation Nexus 3000 series, they offer a balanced mix of performance, cost, simplicity, and an innovative feature set that complements the rest of Cisco’s overall top-of-rack solutions.
A First Glimpse…
As the below graphic indicates, both switches are 1RU in height with 32 line rate 40-Gbps Quad Small Form-Factor Pluggable (QSFP+) ports for the Nexus 3132Q and 48 line rate 10 Gbps SFP+ with 6 fixed QSFP+ ports for the Nexus 3172PQ. All of the QSFP+ ports on the device can operate as a native 40-Gbps port or a four independent 10-Gbps ports. The switches also have a serial console port, USB port, PPS connector and an out-of-band 10/100/1000-Mbps Ethernet management ports. From a software perspective, the rich NX-OS operating system fully supports the Cisco Open Network Environment framework with Openflow and the onePK toolkit in addition to standards based Layer 2 and Layer 3 features.
What does this mean for your data center? Some examples include: Improved workload flexibility, higher availability, and Read More »
Tags: low latency, Nexus 3000, Nexus 3100, NX-OS, performance, SDN, Top of rack, VXLAN
How do you get a feel for things? Perhaps a little research online, a review or two, maybe a referral from a friend or co-worker. But big purchases, such as a new car may require more; more information. So you go to take a test drive. Well, we have something similar to a test drive.
As you may know, it is not often you get a chance to check out how an IT device’s graphical user interface (GUI) looks and feels. Sure you might see a couple of static screen capture and be able to point how the navigation menu is laid out. But beyond that, it is not until the device is purchased and in the installation process, that the real user experience is realized. It’s hard to get a grasp on on the level of complexity for set-up and deployment, let alone configure a VLAN or set-up a secure VPN.
Well, we have offered something better. Our team has delivered a set of device emulators, including switches, access points and routers. You can actually navigate through the actual menus, see how the wizards look and work, and truly get a sense of how easy the small business products are to configure, install, deploy and manage.
Here is what the emulators/GUI’s look like:
Small Business Online Device Emulators
You will notice that all of the small business product user interfaces share the same look and feel, as well as similar general navigation principles. With our Small Business product line, we truly take to heart the need for a great user experience and are always looking to make our products easier to use.
Please, leave us a comment or suggestion good, bad or otherwise to help us improve our products.
Tags: AP, Cisco, emulator, ethernet, gateway, ip, IPv6, network, performance, PoE+, port, QoS, quality, reliablility, RV, small business, VLAN, vpn, WAN, wireless