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Wi-Fi Goes Public

It seems that everywhere you go these days, the little Wi-Fi icon on your mobile device lights up to show that an access point is nearby. In fact, The Wireless Broadband Alliance predicts that the number of public Wi-Fi hotspots globally will grow more than fourfold, to 5.8 million, by 2015. This increasing availability of public hotspots is creating a new “nomadic” network to rival traditional mobile networks and support new mobile devices and their owners’ lifestyles (see blog posting “A New Type of Mobility”). Consumers now expect to have Wi-Fi access when they are sipping a latte in their favorite coffee shop, watching their team score the winning touchdown at the local stadium, or even when they are waiting in line to pay for their groceries.

To learn more about what consumers are doing with their mobile devices, and how and where they are using them, the Cisco Internet Business Solutions Group (IBSG) recently conducted a survey of U.S. mobile users. Following are our top three findings related to the use of public Wi-Fi: Read More »

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A New Type of Mobility

Mobile used to mean the connectivity service that you bought from your local mobile network operator that freed you from the wire connected to the wall. The rise of Wi-Fi has changed all that. Most mobile devices are now Wi-Fi-enabled (see blog posting “What Is a Mobile Device Anymore?”). Wi-Fi has broken the MNO’s monopoly of providing wireless freedom to consumers. While Wi-Fi may not provide all of the features of mobile cellular technology, consumers now have a choice in how they want to connect their devices wirelessly to the Internet – mobile cellular or Wi-Fi.

To learn more about what consumers are doing with their mobile devices, and how and where they are using them, the Cisco Internet Business Solutions Group (IBSG) recently conducted a survey of U.S. mobile users. Following are our top three findings related to mobile connectivity: Read More »

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Software Defined Networking for Service Providers: Data Center Fabric Analogies breakdown in the WAN

Lately I’ve been seeing some industry people trying to apply the principles of data center network fabric models to their Wide Area Networks (WANs), and implying that such can be extended through service provider WANs.  Data center fabrics and WANs are horses of very different colors with way too many differences for these perspectives to hold up.

Fundamentally they are different beasts with one more easily tamed than the other.   Data center networks generally have well known end points and well-ordered designs.

Multi-tenant Data Center Designs

Bandwidth within data centers is virtually unlimited relative to WAN bandwidth.  It is much more stable and constrained in its characteristics when it comes to things like latency, loss, jitter, capacity, restoration capabilities – all of which have significant influence on WAN services delivery.  The same data center network assumptions exist between each of the end points, which makes fabric modeling for data centers generally a good approximation and thus possible to use.

Some private WANs that interconnect data centers may align closely enough with a fabric model, making it a good enough approximation.  But this is a unique case and is essentially Read More »

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Upgrade to 100G/400G/1T Without Upgrading the Fiber Infrastructure

We talked before about how over 150 customers from 50 different network operators and enterprises met last month at Cisco’s campus in Richardson, Texas, to attend the Spring 2012 Packet Optical Networking Conference (PONC). Besides collaborating on best practices and future requirements in IP and optical solutions, attendees also had an opportunity to view Cisco’s extensive “brownfield” 100G DWDM demo setup. It consists of over 1000 km of fiber, with 10G services and shows how we can plug-n-play 100G services onto existing live systems. This is a critical requirement for customers who must maintain business continuity while still upgrading the capacity of the network. It’s also using the same technology we showed with EANTC that could go to Read More »

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What is a Mobile Device Anymore?

It used to be easy—mobile devices were brick-like devices that we carried with us to make phone calls.  Not anymore. Now we have smartphones, tablets, eReaders, and other devices that we bring everywhere and can’t seem to live without. No longer are we using them just for phone calls. In fact, they are now mobile computers, books, entertainment stations, game consoles, and social tools, in addition to our communications hubs. And, because Wi-Fi has become a prevalent way for many of these devices to connect to the Internet, they’re no longer strictly “mobile,” from a network perspective.

To learn more about what consumers are doing with their mobile devices, and how and where they are using them, the Cisco Internet Business Solutions Group (IBSG) recently conducted a survey of U.S. mobile users. Following are our top three findings related to mobile devices: Read More »

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