'Make sure IVS is installed'

@classmethod
def setup(cls):

    pathCheck('ivs-ctl', 'ivs', moduleName='Indigo    Virtual    Switch    (projectfloodlight.org)')
    (out, err, exitcode) = errRun('ivs-ctl    show')
    if exitcode:
        error((((out + err) + ('ivs-ctl    exited    with    code    %d\n' % exitcode)) + '***    The    openvswitch    kernel    module    might    not    be    loaded.    Try    modprobe    openvswitch.\n'))
        exit(1)
