Yet Another Network Controller (Part 1) – Getting started

So this is a blog post (after a very long time) explaining how to start Yet Another Network Controller (yanc – https://github.com/ngn-colorado/yanc) on your Linux system. Clone yanc repository in your local machine if you haven’t already.

$ git clone https://github.com/ngn-colorado/yanc.git

$ cd yanc/

$ make

# mkdir /net

# chown <user> : <group> /net

$ ./yanc -f /net

This has started the yanc filesystem with /net as its mountpoint.

Now we’ll start yanc-of-adapter, which is an utility to allow yanc filesystem to connect to OpenFlow switches created using emulators like mininet (we’ll see how it is done in a while).

Open a new terminal instance and navigate to /<path-to-yanc>/apps/of-adapter/. To run yanc-of-adapter, run following commands in your terminal.

$ git submodule init

$ git submodule update

The above commands would allow you to have om-lib submodule (https://bitbucket.org/omichel/om-lib).

Now let’s make:

$ make

This will create an executable named yanc-of-adapter. Now type following command to check if the necessary files have been created successfully.

$ yanc-of-adapter -h 

The output of the above command should be:

Usage: yanc-of-adapter [-v[v[v]]] [-h] [-p listening-port] <yanc-fs-path> <dbus-addr>
Try `yanc-of-adapter -h’ for more information.

If the above output does not appear, then you would have to follow the above steps again.

Now, yanc is all ready to rock n’ roll. We just need OpenFlow switches to let yanc-of-adapter connect them with the yanc filesystem. We will use mininet to create virtual OpenFlow switches and make them connect to yanc-of-adapter which would ack like an SDN controller for them. Follow the steps given on http://mininet.org/download/ to get mininet up and running. Run following command to check if you installed mininet properly.

# mn –test pingall

Congratulations! You just completed the first step to awesomeness. We will look into how to use yanc filesystem with the help of yanc-of-adapter and mininet.

Feel free to ask any questions.

Peace.

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