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I Installed mininet in Ubuntu system, By default openflow also installing with mininet. But how can I know the installed version of openflow?

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3 Answers 3

Try in your terminal (not in your mininet):

$ ovs-vswitchd --version

It will show you a message like:

ovs-vswitchd (Open vSwitch) 1.4.3 Compiled Oct 25 2012 09:12:41 OpenFlow versions 0x1:0x1

The second 0x1 concerns your openflow version.

0x1 = 1.0

0x2 = 1.1

0x3 = 1.2

0x4 = 1.3

0x5 = 1.4

Otherwise, in case you use wireshark you can apply a filter "of" (openflow) and then choose any message. Open its openflow protocol part and inside the header there is your openflow version (again 0x01 = 1.0 etc).

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openflow appears to be provided by openvswitch-controller; apt-cache policy openvswitch-controller should show you the version installed.

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The version of openvswitch can be determined with ovs−ctl version, but that won't necessarily tell you the version of "OpenFlow" that is supported by that version. To do that, you'll need to cross reference it against the openvswitch web site or source. Per http://git.openvswitch.org/cgi-bin/gitweb.cgi?p=openvswitch;a=blob_plain;f=FAQ;hb=HEAD:

Open vSwitch 1.9 and earlier support only OpenFlow 1.0 (plus extensions that bring in many of the features from later versions of OpenFlow).

Open vSwitch 1.10 and later have experimental support for OpenFlow 1.2 and 1.3.

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