Light Reading

Two Faces of Distributed NFV

Carol Wilson
3/13/2014
100%
0%

In the era of virtualization, greater distinctions may develop between carriers and the services they offer as network operators adopt unique approaches to common service delivery concepts.

One example of how different priorities can influence deployments can already be seen in the instance of Distributed NFV, one of the proofs of concept being considered by the ETSI NFV Industry Specifications Group (ISG).

The idea of Distributed NFV was first publicized by RAD Data Communications Ltd. -- not that surprising as it manufactures customer premises gear. But as a PoC, it is a multi-vendor effort including Cyan Inc. , which is providing orchestration, as well as security vendors Fortinet Inc. and Certes, whose functions are being virtualized. (See ESDN: RAD Rolls Out Distributed NFV Strategy and MWC Offers Peek at NFV Projects.)

So what is Distributed NFV? In this iteration of functions virtualization, some functionality is located at the customer premises on an X86 blade that, for the PoC purposes, is part of RAD's box, which serves as the network interface device. Having some programmability at the customer premises, rather than locating all the intelligence within the network's core, creates different service possibilities.

The PoC sponsor, CenturyLink Inc. (NYSE: CTL), looks at Distributed NFV as an opportunity to advance its managed services strategy, says James Feger, VP of Network Strategy and Development.

"One of our challenges as a company is getting the functionality into the customer suite or customer premises with requests for services and features rapidly changing," he tells Light Reading. By creating a virtual gateway or virtual network interface device (NID) at the customer premises, there is the potential of having a remote resource that becomes part of the virtual service environment and can be programmed with different settings as services change or evolve.

"So things we might want to host in our facilities and data centers and [central offices], like firewall services, could be augmented by having some of that at the premises," he notes. "It's just a matter of which locale makes more sense for that specific function. If you look at something like application awareness, for instance, it could make more sense to have that inside the customer premises versus having it northbound in the network."

From CenturyLink's perspective, the distributed NFV option complements a broader virtualization strategy -- but the jury is still out on what functions best at the edge versus the core, and thus the need for the PoC.

Masergy moving ahead
By contrast, Masergy Communications Inc. , a competitive service provider also focused on managed services, sees Distributed NFV as something it can deploy now, for the express purpose of eliminating most of the hassles it currently faces with maintaining CPE.

"The way we look at something like NFV is that our customers don't really care what the technology is," say Tim Naramore, CTO. "They are pushing us to eliminate all the local premises functions for them, as quickly as possible."

Masergy wants to use Distributed NFV to eliminate multiple discrete boxes at the customer premises, and create cloud-based control of most functions, to eliminate the need to maintain that gear and keep it certified and up-to-date for compliance purposes, Naramore says.

"Having intelligence in a device on the premises and the ability to load VMs [virtual machines] on that and run things opens up a new breed of things for customers," Naramore says. "And they are pushing us to do this."

Both Naramore and Feger say there are things that can't be virtualized and distributed for multiple reasons.

It can also be argued that distributing functions using a vendor box such as RAD's falls short of the virtualization goal of using off-the-shelf hardware in a more 'open' approach, but as Heavy Reading Senior Analyst Caroline Chappell notes, there are practical reasons for considering both options.

"It makes sense to use what you've got instead of putting something completely new in place," she says. "And the actual functions are running on an X86 blade on [RAD's] box. Presumably, you can add anything that can run on an X86."

Having a common orchestration layer may satisfy enough of the "open" requirements that, if pushed further, become impractical.

"We've seen some rowing back in terms of how 'open' all this environment can be," she notes. "There is an argument that the openness is coming from that fact you are using a common service orchestration layer."

— Carol Wilson, Editor-at-Large, Light Reading

(10)  | 
Comment  | 
Print  | 
Newest First  |  Oldest First  |  Threaded View        ADD A COMMENT
reliaz074
50%
50%
reliaz074,
User Rank: Light Beer
3/17/2014 | 10:58:19 AM
things that can't be virtualized and distributed
An explanation of which functions must remain at the customer edge is found in RAD's D-NFV White Paper, which can be downloaded at http://www.rad.com/21/Distributed-Network-Functions-Virtualization-White-Paper/32548/
Dredgie
50%
50%
Dredgie,
User Rank: Light Sabre
3/14/2014 | 8:05:44 PM
Re: Love is in the air
>> maybe the nuance, here is the fact that the CPE is X86 – though I think even that was assumed in the long-circulating NFV 'use cases' document that includes CPE (i.e. STB & resi-gateway) and edge devices with separated forwarding / control planes.
Carol Wilson
50%
50%
Carol Wilson,
User Rank: Blogger
3/14/2014 | 2:21:40 PM
Re: Love is in the air
They didn't spell them out for the most part but since virtualization of network resources is keyed toward centralized software-based control of network gear, Distributed NFV actually represents the break from the norm, to push some things to the edge (security, for one) that belong there. Most functions are expected to be more centralized and not distributed. 

 
t.bogataj
50%
50%
t.bogataj,
User Rank: Light Sabre
3/14/2014 | 4:09:51 AM
Love is in the air
Carol,

Did Naramore and Feger name the "things that can't be virtualized and distributed", and why not?

T.
Carol Wilson
50%
50%
Carol Wilson,
User Rank: Blogger
3/13/2014 | 9:29:36 PM
Re: Two Faces of Distributed NFV
Mitch,

I think that is what CenturyLink is hoping to learn from the PoC - what is the reality and what are the real benefits. They are taking a very pragmatic approach.
DHagar
50%
50%
DHagar,
User Rank: Light Sabre
3/13/2014 | 6:34:35 PM
Two Faces of Distributed NFV
@FakeMitchWagner, key points, Mitch.  Don't you think the answer to that will be in finding the right solutions that will deliver a viable user experience that makes the managed services a seamless part of operations?    Easy to say but tough to do.  I think if the carriers can develop the right solutions they will have a winning proposition that will be sustainable.
Mitch Wagner
50%
50%
Mitch Wagner,
User Rank: Lightning
3/13/2014 | 6:04:47 PM
Re: Two Faces of Distributed NFV
Anything that increases flexiblity while reducing the need to locate equipment on customer premises is potentially a winner. The question is whether the reality will live up to the potential. 
DHagar
50%
50%
DHagar,
User Rank: Light Sabre
3/13/2014 | 5:50:00 PM
Two Faces of Distributed NFV
@Carol,  sounds like a very smart move!
Carol Wilson
50%
50%
Carol Wilson,
User Rank: Blogger
3/13/2014 | 5:44:30 PM
Re: Two Faces of Distributed NFV
Both of the service providers I spoke with saw this as an enhancement to what they can deliver through managed services, so network as a service is probably an apt description. 

 
DHagar
50%
50%
DHagar,
User Rank: Light Sabre
3/13/2014 | 4:58:00 PM
Two Faces of Distributed NFV
@Carol, Fascinating!  If I understand correctly, this is opening the door to a NaS (Network-as-Service) capability, which complements other shifts and movement towards virtualization.

That makes sense that some will provide the connectivity (networks and open or standardized systems) and others will focus on services. 

This again points to the user focus and the value technology delivers, more so than the technology itself.

 
Educational Resources
sponsor supplied content
Educational Resources Archive
From The Founder
Light Reading sits down at CES with the head of Cisco's service provider video business, Conrad Clemson, to discuss how NFV and cloud security relate to video, the challenge of managing 4K/8K traffic, the global expansion of Netflix and virtual reality.
Flash Poll
Live Streaming Video
CLOUD / MANAGED SERVICES: Prepping Ethernet for the Cloud
Moderator: Ray LeMaistre Panelists: Jeremy Bye, Leonard Sheahan
LRTV Custom TV
Join Us at the Digital Operations Transformation Summit

2|4|16   |   03:52   |   (0) comments


The Digital Operations Transformation Summit on February 21, 2016 at the Crowne Plaza Barcelona Fira Centre will bring together 50 senior executives to engage in a unique debate on the opportunities and challenges presented by the transformative evolving digital landscape. RSVP now at events@lightreading.com.
LRTV Custom TV
Making the Test: ADVA Ensemble Connector vs. Open vSwitch

2|4|16   |   01:28   |   (0) comments


Light Reading, in partnership with EANTC, recently tested ADVA's Ensemble Connector, which replaces open vSwitch and offers carrier-grade capability and interoperability. The test results strengthen ADVA's credibility as a provider in the virtualization space.
LRTV Custom TV
Bridging the Gap Between PoCs & Deployment in NFV

2|4|16   |   31:50   |   (0) comments


Charlie Ashton of Wind River presents the keynote at Light Reading's 2020 Vision executive summit in Dublin.
Between the CEOs
CEO Chat With Mike Aquino

2|3|16   |   17:34   |   (0) comments


The former CEO of Overture Networks, Mike Aquino, discusses why truly open virtualization solutions provide service providers with the greatest choice.
Shades of Ray
MWC: Buckle Up for 5G & the IIoT

2|2|16   |   02:28   |   (0) comments


This year's Mobile World Congress looks set to be a 5G land grab and a chance to get down and dirty with the Industrial Internet of Things (IIoT) – but what will the 5G discussions actually be about?
LRTV Custom TV
Case Study: Building China's Next-Gen TV Networks

2|2|16   |   5:01   |   (0) comments


With over 2 billion viewers worldwide, Shenzhen Media Group is one of China's largest content producers. By partnering with Huawei and Sobey, SZMG was able to modernize media operations with the Converged News Center, a production studio that is a model for next-generation workflows.
LRTV Custom TV
Quad Channel Modulator Driver with 46 Gbaud Capability from MACOM

1|28|16   |     |   (0) comments


MACOM's MAOM-003427 is the industry's first surface-mount modulator driver with 46 Gbaud capability to support next generation 200G and 400G applications.
LRTV Custom TV
Video Infographic: Validating Cisco's NFV Infrastructure

1|26|16   |   02:24   |   (1) comment


We all know that the network of the future will be virtual, but when will virtual become a reality? This video infographic covers the four key areas in which Light Reading, in partnership with EANTC, tested Cisco's NFV infrastructure: performance, reliability, multi-service capabilities and single pane of glass management.

For the full report, see

Between the CEOs
CEO Chat With Phil McKinney, CableLabs

1|22|16   |   13:36   |   (1) comment


At CES in Las Vegas, we met with Phil McKinney, CEO of CableLabs. Phil provides an update on the rollout of DOCSIS 3.1, his views on the future of open source and how consumer interest in virtual reality could affect network traffic.
Between the CEOs
Ericsson CTO on the Changing Telecom Market

1|21|16   |   10:26   |   (0) comments


At CES 2015, CTO of Ericsson, Ulf Ewaldsson, sits down with CEO of Light Reading, Steve Saunders, to discuss the changing telecom market, the new partnership with Cisco and the future of the telecom industry.
LRTV Interviews
Ireland's Data Dream

1|21|16   |   14:31   |   (0) comments


Host In Ireland president Gary Connolly tells Light Reading's Steve Saunders about the role Ireland is playing in hosting data for the world's largest organizations.
LRTV Custom TV
Brocade Keynote: Transitioning to the New IP

1|20|16   |   27:23   |   (0) comments


At 2020 Vision in Dublin, Andrew Coward, VP of Service Provider Strategy at Brocade, presents the transition to the New IP.
Upcoming Live Events
March 10, 2016, The Cable Center, Denver, CO
April 5, 2016, The Ritz Carlton, Charlotte, NC
May 23, 2016, Austin, TX
May 24-25, 2016, Austin Convention Center, Austin, TX
All Upcoming Live Events
Infographics
Cisco's latest VNI numbers suggest the world will be using 366.8 exabytes of data on smartphones and Internet of Things devices, up from 44.2 exabytes, in 2015.
Hot Topics
Alphabet Is Serious About Google Fiber
Mari Silbey, Senior Editor, Cable/Video, 2/1/2016
Did Juniper Pay 'Peanuts' for BTI?
Mitch Wagner, West Coast Bureau Chief, Light Reading, 2/2/2016
Google's 5G Radio Ambitions Are Expanding
Dan Jones, Mobile Editor, 2/5/2016
How Data Center Outsourcing Fuels AT&T NetBond Growth
Carol Wilson, Editor-at-large, 2/3/2016
3.5GHz Startup Gets $22M for Small Cells
Dan Jones, Mobile Editor, 2/2/2016
Like Us on Facebook
Twitter Feed
Webinar Archive
BETWEEN THE CEOs - Executive Interviews
The former CEO of Overture Networks, Mike Aquino, discusses why truly open virtualization solutions provide service providers with the greatest choice.
As anyone who knows me will tell you, I like to think I know a fair bit about this next-gen-comms malarkey, but there's nothing like an interview with one of the ...
Animals with Phones
Happy Groundhogs for Technology Day! Click Here
Live Digital Audio

Broadband speeds are ramping up across Europe as the continent, at its own pace, follows North America towards a gigabit society. But there are many steps to take on the road to gigabit broadband availability and a number of technology options that can meet the various requirements of Europe’s high-speed fixed broadband network operators. During this radio show we will look at some of the catalysts for broadband network investments and examine the menu of technology options on offer, including vectoring and G.fast for copper plant evolution and the various deployment possibilities for FTTH/B.