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EXCLUSIVE! NFV Interop Evaluation Results

Light Reading
Prime Reading
Light Reading

Of all the industry test results out there, this is the one that people have been waiting for.

In a historic first for the communications networking industry, Light Reading, in partnership with EANTC on behalf of the New IP Agency (NIA), is happy and proud to announce the publication of the world's first independent interoperability evaluation of NFV infrastructure, focused (in Phase 1) on multivendor NFV infrastructure-to-virtual network function (VNF) interoperability.

These results are just a first step on a very important journey for an industry that is in dramatic upheaval. Never before have network operators, faced with the unknown and daunting challenges of introducing virtualized functions and their supporting infrastructure platforms, needed independent test results as much as they need them now: Such independent evaluations can cut down development times, save operators resources, and help speed up further tests, field trials and live deployments.

That's why we have been moving fast. The Phase 1 evaluation, which was publicized, set up and completed in just a few months (an extraordinarily short time for such a procedure), included 12 vendors, which between them submitted four NFV infrastructure (NFVi) platforms and 17 VNFs.

The NFVi vendors, which all offered platforms based on OpenStack, were:

  • Alcatel-Lucent
  • Cisco Systems
  • Huawei Technologies
  • Juniper Networks

The VNF vendors were:

  • Alcatel-Lucent
  • Cisco Systems
  • Cobham Wireless
  • Hitachi Communication Technologies America
  • Huawei Technologies
  • IneoQuest Technologies
  • Juniper Networks
  • Metaswitch Networks
  • NetNumber
  • Netrounds
  • Procera Networks
  • Sonus Networks

The VNFs came in many shapes and forms, from virtual routers, EPC (evolved packet core) and IMS components, firewalls, test probes, deep packet inspection (DPI) modules and session border controllers.

The testing focused on the functional interoperability of NFVi platforms and various VNFs, but did not include the sort of tests more commonly associated with communications infrastructure, such as performance, scalability and resilience testing: In addition, these tests did not include any management and orchestration (MANO) evaluations (they will be the focus of a later evaluation phase).

The tests carried out by the EANTC team, which were all conducted remotely (another new feature!), were of NFVi-VNF interoperability combinations that had never been tried before in such open conditions. As a result, not all were successful, but as this is still a very nascent market, it was expected that some of the evaluations were not be completed successfully.

In fact, the success rate -- 25 of the 39 combinations tested, or 64%, passed -- was "a great result," noted EANTC managing director Carsten Rossenhövel.

That higher-than-expected pass rate was due, in part, to the high degree of industry participation: During the seven weeks of testing, 55 engineers from various vendors (including test system partner Ixia) were involved, with support from 14 marketing and communications executives, seven EANTC staff and three from Light Reading/NIA: In total, 79 people were directly involved in the process.

So does that mean that there was a 36% fail rate? It could be viewed that way, but that would be shortsighted. The point of these evaluations is not to identify technology that 'does not work' – it is to see what can be done better, what needs to be fixed. The NIA exists to advance the industry and speed up the process of getting useful technology to market: When the evaluations highlight an interoperability combination that doesn't work, that means the vendors can fix the problems! This can only be good for the industry.

The evaluation also highlighted many other interesting and useful outcomes, not least of which was insight into the performance of OpenStack. For some OpenStack supporters, it is a viable alternative to standardization: "If only everybody would base their implementations on OpenStack, all interop issues would be solved," could be a phrase you might hear in virtualization circles.

Well, according to EANTC's results, OpenStack is far from ready to play an interop role. "There were tons of interop issues despite the fact that all NFVis were based on OpenStack," noted EANTC's Rossenhövel. That's because there are far too many options (including how to manage a VNF), too many versions (with backwards compatibility an oversight), and items left open for vendor consideration (including license management).

So there are many positives to take away from the Phase 1 test results, but there is much, much more to be done: A test combination that passed confirms that the initial lifecycle management tasks work between the parties on a functional basis, but that still leaves many aspects of application-layer functionality, performance, resiliency and orchestration to be evaluated. Those aspects will be the focus of future evaluations.

In the meantime, the following pages will provide you will a full matrix of the test results and detailed insights into the evaluations, the outcomes and the conclusions. So dive in!

Page 2: The Participants

Page 3: Test Setup and Coverage

Page 4: The Results Matrix

Page 5: Interoperability Findings and Challenges

Page 6: Further Interoperability Findings and Challenges

  • Prefer to read this report in a downloadable PDF file? An extended PDF version of this report, which includes individual report cards for each test combination that achieved a 'pass,' is available for free (to any Light Reading registered user) at this link.

    — Ray Le Maistre, Circle me on Google+ Follow me on TwitterVisit my LinkedIn profile, Editor-in-Chief, Light Reading and Carsten Rossenhövel, Managing Director, European Advanced Networking Test Center AG (EANTC) (http://www.eantc.de/), an independent test lab in Berlin. EANTC offers vendor-neutral network test facilities for manufacturers, service providers, and enterprises.

    Next page: The Participants

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    User Rank: Light Beer
    12/10/2015 | 2:39:46 PM
    Network now needs a permanent Proof of Concept lab
    We're at the 'art of the possible' stage, rather than the 'start of the probable' regarding live deployment... which if taken at face value, should wholly sidestep the heinous blunder of productionising a nine 5's infrastructure in for a five 9's expectation.

    As much as the IT proposition to a user involves all layers of the ISO stack, if you screw the network you've lost the farm, which then negates any major investment in state of the art delivery systems up the stack.

    Any tech worth their weight will crash and burn this stuff on Proof of Concept lab... and weld all the fork doors closed... as it'll be their 'nads on the line should if fail in production, not any IT upper heirarchy who decided to make an (unwise) executive decision.

    Fail means *anything* regardless whether its a SNAFU or an hack-attack vector that no-one tested. 

    In short, test to destruction, armour-plate the resultant design, and always have a PoC lab bubbling away in the background for the next iteration, because the genie is now out of the bottle and won't go back in.
    User Rank: Light Sabre
    12/8/2015 | 8:56:52 PM
    Open source doesn't necessarily mean any support available...
    It's always interesting to see how open source platforms still have gaping holes with major unsupported functions. Every fork/flavor of an open source project means more than a few potential gaps for interoperability with other forks.

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