Networking

09:48 AM
Mike Fratto
Mike Fratto
Commentary
Connect Directly
Twitter
LinkedIn
Google+
RSS
E-Mail
50%
50%

OpenFlow Coming To InteropNet Labs

One of the most interesting aspects of Interop is the Interop Labs area on the show floor, which highlights new and emerging technologies. In years past these technologies have included VPNs, network access control systems and various Trusted Computing Group projects. This year, InteropNet's OpenFlow Lab is going to showcase OpenFlow, with live demonstrations of the OpenFlow protocol. Openflow may well become an important networking protocol that will have significant impact on how you can depl

While the distributed model of today works fine, controller-based networks do have several advantages. For example, Ethernet loops in the network are not a problem. Loops in Ethernet generally pose a problem because there is no way to stop frames from going in one port and circling back around again. Spanning Tree deals with loops by shutting off one leg of the loop. The controller builds a model of the network and connections and sees multiple connections between devices as alternate paths that it can use to forward frames. Access controls can be applied at any point in the network where it makes sense. Quality of service can be achieved by load balancing paths through the network, ensuring that no choke points develop (or alerting admins when they do).

One of the basic design parameters is that OpenFlow can run on existing switch and router hardware and can replace the hardware forwarding mechanisms or run concurrently with them. More vendors are beginning to adopt OpenFlow. For example, NEC has announced an experimental switch, and other vendors are showing interest.

Considering that many IT shops aren't yet at a point at which they are considering multipath Ethernet such as TRILL, Shortest Path Bridging, Brocade's VCS or Cisco's FabricPath, OpenFlow could be a useful alternative for multipath Ethernet. As with any standard, any equipment vendor that supports OpenFlow can participate in the network, allowing you to have a multivendor network. If you are at Interop, check out the demo. It is sure to be interesting. In fact, it was advertised on Time Square. (It's not Shopped, if you're asking)

InteropOnTimeSquare.jpg

Mike Fratto is a principal analyst at Current Analysis, covering the Enterprise Networking and Data Center Technology markets. Prior to that, Mike was with UBM Tech for 15 years, and served as editor of Network Computing. He was also lead analyst for InformationWeek Analytics ... View Full Bio
Previous
2 of 2
Next
Comment  | 
Print  | 
More Insights
Slideshows
Cartoon
Audio Interviews
Archived Audio Interviews
Jeremy Schulman, founder of Schprockits, a network automation startup operating in stealth mode, joins us to explore whether networking professionals all need to learn programming in order to remain employed.
White Papers
Register for Network Computing Newsletters
Current Issue
2014 Private Cloud Survey
2014 Private Cloud Survey
Respondents are on a roll: 53% brought their private clouds from concept to production in less than one year, and 60% ­extend their clouds across multiple datacenters. But expertise is scarce, with 51% saying acquiring skilled employees is a roadblock.
Video
Twitter Feed