For NAS on the Home Network, it turns out GbE matters

October 24th, 2010    |    Tags:

For our computers at home we have a small network based on a standard wireless dual radio N/G router with 4x 1Gb Ethernet ports. However wireless performance in my office which is about 30 feet away from the router is poor (maybe 2Mb/s). We fixed this by creating a Ethernet over Power Line network (using the Netgear XAVB101) which works fine for most applications.

The one area that didn’t work well was transferring large files from and to our Network Attaches Storage (a 1 TB Buffalo LS-WTGL, predecessor to this model). Transfer speed from my MacBook Pro maxed out around 20 Mb/s. In other words filling the 1TB drive would take about 4.5 days. That’s a bit slow. How to fix it after the break.

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Stanford Wireless – The iPhone dominates

January 15th, 2010    |    Tags: , , , ,

In a recent post on Miles Davis’ blog he reports the latest statistics of the wireless network of the Stanford Computer Science Department. The numbers are interesting to say the least. The Laptop market is split equally between Mac OS X and Windows. Both however are crushed by the iPhone which is also the fastest growing segment. Android which had not yet made a dent on last month’s statistics is slowly creeping up.

Operating system % Clients % Usage
1 Apple iPhone 37.4% 1.1%
2 Mac OS X 24.2% 40.5%
3 Windows Vista 15.8% 16.6%
4 Windows XP 10.7% 27.4%

For complete statistics visit his blog post here. Stanford is far from typical network. However it sometimes is a good leading indicator of things to come. That phones are becoming a major category on wireless networks (and eventually the majority) seems like a safe bet. How quickly it happened is amazing though. It has been 2.5 years since the iPhone was introduced).

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AskSundayLLC/Ask-Sunday/MakeSunday Scam

December 16th, 2009    |   

I recently posted about my experiences with AskSunday, a virtual assistant service. While AskSunday wasn’t a good fit for me, it is a legitimate company and I know people that are using it and that seem to be happy with it. However it turns out that a scammer is using the name of the legitimate company as well as variations of it (Ask-Sunday, MakeSunday, AskSunday LLC) in order to defraud job seekers. The scam was reported by a number of people in the comments of my original post (thanks!!) and was still ongoing as of December 15th.

The scammer who uses a variety of names including “Brian Clark”, “Brian Moore” and “Thomas Moore” basically promises employment for AskSunday LLC and as part of it tries to get complete bank account information from applicants. It them seems like he then he  transfers money into the account, ask the applicant to spend it on a project and then withdraws it. The result is the applicant being out of pocket.

More details below. I also highly recommend reading the many great comments below the original post. Please post any new comments there.

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About Me

I am currently CEO of Big Switch Networks, a start-up company I co-founded in 2010.

Previously I was a Consulting Assistant Professor at Stanford University, where headed the Clean Slate Laboratory and let the team that created the OpenFlow standard.

Before Stanford I co-founded Voltage Security a market leader in encryption technology for enterprises. I served as CTO, board member and engineering manager and collected a few awards.
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