  High Energy Physics (HEP) experiments rely on the networks as one of the
critical parts of their infrastructure both within the participating
laboratories and sites as well as globally to interconnect the sites, data
centers and experiments instrumentation. Network virtualisation and
programmable networks are two key enablers that facilitate agile, fast and more
economical network infrastructures as well as service development, deployment
and provisioning.Adoption of these technologies by HEP sites and experiments
will allow them to design more scalable and robust networks while decreasing
the overall cost and improving the effectiveness of the resource
utilization.The primary challenge we currently face is ensuring that WLCG and
its constituent collaborations will have the networking capabilities required
to most effectively exploit LHC data for the lifetime of the LHC. In this paper
we provide a high level summary of the HEPiX NFV Working Group report that
explored some of the novel network capabilities that could potentially be
deployment in time for HL-LHC.
