  The network management community has explored and exploited light, copper,
and several wireless spectra (including acoustics) as a medium to transfer
control or data traffic. Meanwhile, haptic technologies are being explored in
end-user (wearable) devices, and Tactile Internet is being used merely as a
metaphor. However, with rare exceptions and for smaller scoped projects, to our
knowledge, vibration has been largely untouched as networking communication
media. In this paper, we share the lessons learned while creating and
optimizing a pilot testbed that serves as an inexpensive starting point for the
exploration of vibration-defined networking. We demonstrated the feasibility
(but not yet the scalability) of vibrations as a tool for a few network
management mechanisms, such as resiliency, physical layer security, and as an
innovative method for teaching networking concepts to individuals with visual
impairments (VI). By demonstrating how vibrations could be programmable, we
propose to the community a few open problems that could generate several
applications.
