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Interference Detection and Mitigation with Cisco CleanAir

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 »

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The Fourth Step to Enterprise Mobility: Create an App Checkpoint

This is the fourth post in a blog series featuring Vine-format videos focusing on the “Six Essential Steps for Unleashing the Power of Enterprise Mobility”. The first blog post discussing how to build a mobile structure can be found here. The second blog post highlighting the benefits going virtual can be found here. The third blog post focused on preparing enterprises for the division of devices can be found here.  

For today’s app-centric mobile workforce, it’s no longer enough to provide basic security features for devices. Gone are the days where security for mobility is “all or nothing” where virtual private networks (VPNs) gave you access to all corporate network resources, or you had very limited email and calendaring access.

Today, enterprises are managing public and private mobile applications that require a shift in security practices and a new application strategy. Here’s a short checklist to guide enterprises as they create app checkpoints to meet new security demands:

Step 4

To watch the video, see: http://youtu.be/dpQ5_n6FoX4

1. Look for a rapid, reliable, and secure vetting process for applications. 

IT security teams are usually directed toward securing the network and the devices connected to it, versus securing the applications that run on those devices. Many organizations lack the resources to evaluate an application’s ability to handle sensitive information throughout its lifecycle.

Companies rarely have the resources to monitor sites that could breed malware, nor do they have the ability to maintain heuristic algorithms to identify such sites prior to infection. And those that decide to secure mobile apps themselves might end up having to prioritize remediations, leaving them vulnerable. Read More »

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Third Step to Enterprise Mobility: The Division of Devices

This is the third post in a blog series featuring Vine-format videos focusing on the “Six Essential Steps for Unleashing the Power of Enterprise Mobility”. Be sure to read the first two blogs and watch the videos – First Step to Enterprise Mobility: Build the Mobile Structure and  Second Step to Enterprise Mobility: Go Virtual.

In this blog series, we’ve discussed two important steps enterprises can take unleash the power of enterprise mobility. We’ve covered how building a mobile structure can arm enterprises with the appropriate architecture to increase efficiency and revenue. In addition, we highlighted how enterprises can go virtual by implementing desktop virtualization.

Our third step -- preparing for the division of devices -- relies on both structure and a mobile workforce. How can enterprises enable and support the proliferation of employee-owned devices without burying their IT department and putting corporate data at risk? Here’s a quick checklist to help make it happen:

mobstep11. Use a unified network infrastructure that facilitates secure, virtual workspace delivery across wired, wireless, VPN, and cellular networks.

As wireless access becomes more pervasive, performance and reliability expectations are the same as what is expected from a wired network. Features such as reliable connectivity, application response times and voice, video and real-time collaboration solutions all depend on a seamless delivery for both wired and wireless devices. This fundamental shift demands that IT monitor and have a unified solution in place  (i.e. a single physical infrastructure) for both corporate wireless LAN (WLAN) and wired LAN. This converged infrastructure will enable the right quality of experience for users, independent of their devices.

A unified network infrastructure can also make sure that IT is able to identify each device connecting to the network and authenticate the person using it.

Read More »

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CableLabs Summer Conference 2013– CMX Live Demo

At the CableLabs Summer Conference last week in the Keystone Conference Center outside of Denver, Colorado, Cisco CMX was demonstrated live on stage showing up to the moment information on the venue and the attendees.

cablelab1

The audience consisted of approximately 400 attendees, with the room at full capacity, mostly business leaders from CableLabs member organizations including all the top tier operators. Read More »

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Second Step to Enterprise Mobility: Go Virtual

Click to see the second step in action

Click to see the second step in action

This is the second post in our “Six Essential Steps for Unleashing the Power of Enterprise Mobility” blog series featuring Vine-format videos. To read the first blog and watch the video describing how enterprises can build a mobile structure, click here.

I’m excited to discuss the second step enterprises can take to enable more efficient ways of working in today’s mobile world. It may seem basic, but with more mobile workers than ever before and more mobile devices per user, enterprises can enable greater mobility by revolutionizing the workspace. This revolution isn’t about new cubicles and chairs – it’s about going virtual.

Virtual workspaces are not only efficient, but this next-generation workspace has the potential to build a complex, talent-based competitive advantage. Here are some key steps to consider when going virtual:  Read More »

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