Mininet – Software Defined Networking

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 than tinkering with all the features of devices, but OpenFlow has a lot of nifty capabilities that Mininet makes it a lot easier to explore.
Anyway I think it’s great that there are free software tools to learn how to setup the network.
Check out the link below, there are some assignments that are used at Stanford about how to create your own link state routing protocol. Cool!

It’s easy to set up a network with many switches, routers and hosts. You can specify packet loss, queue size and delays on links.

They did some tests between ssh and mosh, to see how much better mush was when there were packet loss or delays.

You could deploy a setup similar to what you’ve tested inmininet, with real products. OpenFlow is used in both mininet and in the real products :)

Install

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Posted at 8pm on 29/04/13 | No Comments » | Filed Under: IT

Command View P6000 EVA Simulator 10.0

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.hp.com
  • Two files: EVA Simulator 10.0 (Z7550-00252_EvasimInstaller_100fr_v1.exe) and a readme
  • There is an e-mail listed in the readme!
    • But if you want to, you can put in a comment below saying how sexy I am :p
  • The readme is quite long but most of it is about how to use the PA (performance analyzer), Appendix B is a required read. It describes how to add the Groups so you can log on to CV.
    • A previous blog post by myself truly also goes through how to add a user group :)

For lazy hounds:

  1. (optional) Disable UAC in Windows and make yourself admin.
  2. Put an account in the Windows Group called “HP Storage Admins”.
  3. Launch the downloaded file (it extracts a setup.exe and .msi file)
  4. Launch setup.exe – it’s located in the same directory where you launched the Z7550-00252_EvasimInstaller_100fr_v1.exe
  5. Next, next, next, next, yes, yes, Wait, yes, Installed!
  6. Try out the “Start HP P6000 EVA Simulator” new icon on your desktop, does it work? Profit!

“XF application has stopped

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Posted at 7pm on 24/04/13 | No Comments » | Filed Under: IT, Storage