Even though I'm on summer holiday I'd squeeze in time for a Software-Defined Networking course on coursera! https://www.coursera.org/course/sdn It's given by a professor from Georgia University. It's still not too late to register, it's only on the second week (until tomorrow Monday 8/7) and …

Mininet Mininet is a network emulator written in Python. With it you can create a test network consisting of many devices, for example inside your laptop. It's a lot more light-weight compared to emulating switches/routers in GSN3. Initially Mininet appears to be more about easily getting working network rather …

Due to somewhat popular demand here's another post detailing the steps for somewhat successfully installing HP P6000 Command View Simulator on Windows 7 x64. It can be a bitch. The older post is from 2011 with CV 9.4, this one also has PA - performance advisory bundled. Download: http://software …

In early April of 2013 Brocade had a great offer - ask for it and you'll get a voucher to an exam - for free! I took them up on their offer and scored a voucher for the BCNE (Brocade Certified Network Engineer). After that I noticed that Brocade also has a …

Ever wanted to do monitoring of a P2000 or MSA2000 from HP? They are in secret Dot Hill hardware, for example DDN also resells these as for example EF3015. There is a nice nagios script written by Tom http://www.toms-blog.com/nagios-hp-msa-p2000-status-and-performance-monitor/ To use that you need an API …

http://ipv6.he.net/certification/ This was really fun! If you complete this with your own domain and server you'll learn to set up these: set up IPv6 address and routing point your DNS to the IPv6 address - this would applies mostly if you have your own nameserver point the …

Ever thought about studying a bit of programming? Thought it was a too daunting task? I've just gone through the second lesson on learnstreet and it's quite fun! It doesn't take long to go through the first two lessons, so if you don't have much time you can spend a …

Do you have IPv6 connectivity? Perhaps a server and a domain name already set up? http://ipv6.he.net/ Some things you get to play with: check if you can view the page in IPv6 send an e-mail over IPv6 rDNS over IPv6 Quite fun way of learning about IPv6 …

Introduction Recently I've had the pleasure of installing Ubuntu on my desktop. Here are some thoughts and what I initially do: Machine is a: Motherboard: Gigayte GA-EX58-UD3R CPU: Intel Core i7 Memory: 8GB Disks: Intel i300 SSD, 2x500GB and 1x3TB Western Digital Drives Graphics Card: AMD HD6800 Here are some …

Building on the initial post about cfengine we're going to try out some things that may actually be useful. My goal would be to make /etc/resolv.conf identical between all the machines. The server setup is the lustre cluster we built in a previous post. In this post you'll …