FAQ

We list here some problems that we faced while doing this project.

I'm able to access some sites (like Google, Youtube, etc) but not others (Netflix, Yahoo, etc) from the user laptop.

Check your Zodiac FX version. Paul Zanna mentions here that

There was an MTU issue that was fixed in 0.58 that sometimes caused problems with encrypted streams.

So upgrade your Zodiac FX firmware to the latest version. For this project, we used version 0.58. More details on how to upgrade to this version can be found in the user guide and in the forum.

The Zodiac is not showing all my flows.

The latest firmware version (0.61) only allowed us to add 69 flows and no more than that - this is probably due to a bug in the firmware, as the latest version is supposed to be able to support up to 512 flows. We used version 0.58 as we were able to add up to 128 flows.

The flow duration retrieved from Zodiac FX appears longer than it should be.

This is a known issue for firmware version 0.61. No updates have been released yet to rectify this.

Why aren't all 130 Netflix IP ranges added to the Zodiac?

Because of the firmware issues mentioned above, and also because the Zodiac appears to be unable to match on IP ranges (which seems like a significant oversight).

Why do the packet counts keep going up after the Netflix streams stop?

We believe it's because the Zodiac is unable to send packets to the controller quickly enough. However it could also be a faulty Zodiac (the one demonstrated in the video frequently stops replying to OpenFlow feature request messages).