SDN And NFV – Interesting Times
Looking back May
2015 may become known as the month when big money recognized Network
Virtualization. Early in the month Ciena announced an agreement to acquire Cyan
for $400 million to strengthen their portfolio of Software Defined Networking
and Network Functions Virtualization products. The fag end of the month then
saw HP announcing successful conclusion of discussions to acquire ConteXtream,
a provider of OpenDaylight-based, carrier-grade SDN fabric for NFV.
The idea of
Software Defined Networking was born in large enterprise and campus networks. Making
network devices programmable and controlled by a central element was an idea
whose time had come and standards like OpenFlow and the OpenDaylight Project
followed. With Cloud Data Centers becoming larger and more complex it seemed an
obvious “use case” for SDN – this is an area where SDN has more or less taken
root. Carriers and other network service providers came together to form the
European Telecommunications Standards Institute (ETSI) who came up with the
basic requirements and architecture for NFV. The main problem they were looking
to solve was being able to rapidly provision network infrastructure to enable
speedy deployment of new services.
In many ways SDN
focuses on efficient orchestration and automation of network services and NFV
focuses on optimizing the network services themselves. Rather than being
competing approaches it seems apparent that the two have synergies. The market
is looking at some big nos. – a SDNCentral,
Plexxi and LightSpeed Ventures study in 2013 pegged this at $ 35 Billion
in 2018 with an annual growth rate of 20%.
What is becoming
clear is that the battleground is in the process of moving to the carrier
networks now. Fundamentally they are seeking the ability to be able to roll out
services faster and monetize sooner. This could also bring with it the ability
to better predict and manage network requirements in the face of large spikes
and troughs in consumption of Over The Top (OTT) Services like video. This is a
big market with multi-million $ deals – no wonder the HPs of the world are
interested. A case in point is Verizon’s announcement of a multi-year software
defined networking roll-out with opportunities for as many as 20 vendor
partners to contribute solution elements. The who’s who are represented in that
list – Alcatel-Lucent, Nokia, Cisco, Juniper et al’. Verizon uses SDN in its
data centers and in making a wider SDN case says it is seeking “Elastic,
scalable, network-wide service creation and near real-time service delivery and
operational agility via dynamic resource allocation and management as well as
automation of network operations.”
At the other end
of the spectrum is Intel’s plan to make what they call Customer Premises
Equipment (the modems and routers in our homes) more intelligent by adding
bigger and better chips (big surprise!). Virtualization + OpenStack seems to be
the magic combination here. Without getting into too much detail this could
effectively allow the CPEs run virtual machines and give the carrier a way to
push services, even if they can't be run in the cloud. For the ISP this could
be a God-send – an opportunity to offer some truly value added services. They seem to be aiming for nothing less than a
revolution in the nature of home broadband services.
It will be
exciting to watch this space as developments in the external telecom and
carrier environment impact it and also as the synergies and, dare one say,
conflicts with the other prevailing technology trends of the day like Big Data,
Docker / Containerization etc. play out. What seems sure is the attention SDN
and NFV are getting now is going to be sustained for some time to come.
To know more email: blog@calsoftinc.com
Anupam Bhide | Calsoft Inc.
