Cisco's 'fog computing' aims to bridge clouds and the Internet of Things
It will add Linux to small edge routers to help crunch data coming from devices in the field
IDG News Service - If the hardest part of the "Internet of Things" is getting to the Things, Cisco Systems is offering a lifeline.
The so-called IoT encompasses a range of Internet-capable devices that could be almost limitless: Thermometers, electric meters, brake assemblies, blood pressure gauges and almost anything else that can be monitored or measured. The one thing they have in common is that they're spread out around the world.
From a network builder's perspective, the biggest challenge this poses is backhaul, or the links between devices in the field and data centers that can analyze and respond to the data they spit out. Typically, IoT devices talk to a small router nearby, but that router may have a tenuous and intermittent connection to the Internet.
There can be huge amounts of data coming out of these devices. For example, a jet engine may produce 10TB of data about its performance and condition in just 30 minutes, according to Cisco. It's often a waste of time and bandwidth to ship all the data from IoT devices into a cloud and then transmit the cloud's responses back out to the edge, said Guido Jouret, vice president and general manager of Cisco's Internet of Things Business Unit. Instead, some of the cloud's work should take place in the routers themselves, specifically industrial-strength Cisco routers built to work in the field, he said.
"This is all about location," Jouret said. Using local instead of cloud computing has implications for performance, security and new ways of taking advantage of IoT, he said.
To equip its routers to do that computing, Cisco plans to combine Linux with its IOS (Internetworking Operating System) to create a distributed computing infrastructure for what the company calls "fog computing." It plans ultimately to build computing capability into Cisco IoT routers, switches and IP (Internet Protocol) video cameras.
Cisco announced the architecture, called IOx, at the utility-industry trade show Distributech in San Antonio, Texas. IOx will start to come out for Cisco's hardened IoT routers in the first half of this year.
To start with, the new architecture will make it easier for users to connect specialized, industry-specific systems at the edge of the network with Cisco routers, Jouret said. Different industries use many different types of connections for IoT devices, such as serial, Bluetooth, ZigBee, and Z-Wave. In the past, it's been up to Cisco to modify its routers to work with whatever interface an industry may need, Jouret said. Adding Linux to its routers changes that equation.
"Now, instead of taking many months for Cisco to do the work of integrating this interface into our router, you can do it yourself," Jouret said.
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