This week in the SDN course on coursera there were lots of examples of real use of SDN stuff, for example like the B4 WAN by Google. They got a really interesting and cool interview with the Network Lead at Google - Amin Vahdat. And! They actually put this interview up …

Is what I did this week during the SDN Course on Coursera :) Within mininet or with a real OpenFlow capable switch, you can point the switch to use a controller. The controller would figure out all the smart stuff and the switch only does what the controller tells it to …

Not allowing root to log in By default sshd is running on SL6 and you can ssh in with 'root'. Probably a good idea to change this in /etc/ssh/sshd_config permitrootlogin no But first, create a user that can log in. useradd mart passwd mart Then you can change …

Time for some more Linux testing. The reason for this is because I think I will go ahead and try to study for the RHCSA - Red Hat Certified System Administrator. Work might send me to a course in December, probably wise to play around with it before this. So here …

After the announcement of the available material Fabric OS 7.0.0a has been released. On the page http://community.brocade.com/docs/DOC-2041 only the first revision of the 7.0 release notes is available. The BCFA 16G beta course material is also available, probably a good idea to …

The problematic PDF The CFP300 material on http://community.brocade.com/docs/DOC-2041 is encrypted so that it cannot be printed/re-edited without a password. If you try to open this with evince (default .pdf viewer in Gnome) it will ask for a password. pdftotext (comes with the software suite …

This is from a post on the ITRC forum, I will copy it into here because the forum are moving soon and you never know if the links will work or not :) Also I do want to immortalize it. Title: Is it just me? Or does everything required a fw …

** 2011-08-18 Just updated the link to the HP forum. I also wrote a primer to Data Storage. Just listened to this podcast episode #96 of Infosmack on theregister (about storage). Very interesting to hear what some really experienced people say about storage and the future. Like hybrid disk drives becoming …