Welcome!

Industrial IoT Authors: Jason Bloomberg, Elizabeth White, Karthick Viswanathan, Liz McMillan, Yeshim Deniz

Related Topics: SDN Journal, Java IoT, Microservices Expo, Containers Expo Blog

SDN Journal: Blog Post

Scripting Is Automation, But Automation Is Not Scripting

There are many extremely complex clustered applications that rely entirely on exchanging information through APIs

Last week Greg Ferro (@etherealmind) wrote this article about his experience with scripting as a method for network automation, with the ultimate conclusion that scripting does not scale.

Early in my career I managed a small network that grew to be a IP over X.25 hub of Europe for a few years providing many countries with their first Internet connectivity. Scripts were everywhere, small ones to grab stats and create pretty graphs, others that continuously checked the status of links and would send emails when things went wrong.

While it is hard to argue with Greg’s complaints per se, I believe the key point is missing. And it has nothing to do with scripting. In a reply, Ivan’s last comment touches on the real issue.

We have been scripting our networks against CLIs forever and I will bet you most folks will consider it successful, even though it may be a pain. The article lists the pains, but not the reasons why. As a network industry, we have never ever considered the interaction with our network devices an API. Not in the true software engineering sense of an API.

There are many extremely complex clustered applications that rely entirely on exchanging information through APIs that are well documented, well versioned, well abstracted and properly promoted or deprecated. Creating and maintaining APIs is a real software engineering effort, a skill that requires true architecture, engineering and discipline. And we have not given our users anything close to it.

If we (that collective network industry) had truly considered our CLI an API, we would (and should) have been pushed aside a long time ago. The CLI is and always has been a simple interface for a human to tell a device what to do. It was not designed to be automated. It is not structured enough to be automated. Even large vendors have multiple flavors that are all industry standard, but all slightly different. And nowhere would you find a formal, full and complete dictionary of that CLI with all inputs, outputs, versions and options. The closest the network industry has had to a true API is SNMP, and that is indeed a very sad statement.

I think we have mentioned before that the networking industry is a bit slow to get to modern software engineering methods and practices, but the tide is changing. And whether you want to call it SDN or something else, the sheer volume and complexity of interaction with the network is pushing us to provide truly automated access to our devices and our networks.

And creating and maintaining APIs is far more than the technology used to access them. It does not matter whether its XML, JSON, REST, NETCONF or anything else. Those are definitions of how information is carried to and from the device and network. I can build a wonderful REST API that takes a CLI command as an argument and spits me back the output from that CLI command in some format. I am sure that sounds familiar to some, but this is not an API. Not in a truly meaningful way that would elevate our automation abilities.

Designing and implementing APIs is not trivial. Believe me, as an entirely API driven solution, we spend a tremendous amount of time discussing our APIs and abstractions to make sure they find that find balance between granularity, functionality, abstraction, scaling and a few other relevant qualifiers.  But the key is that they are part of any feature design from day one, they are part of the overarching architecture, not bolted on at the end. Our APIs are not perfect, there is no such thing, but they are modeled after the workflow of you the user doing the work required to keep the network running and thriving.

So when you need to configure MLAG on a set of Plexxi switches, we do not have a series of API calls to bundle ports together on a switch, give them a unique ID, then tie the switches together as an MLAG pair that shares that unique ID. Oh, and create an MLAG control channel between them, and make each of the switch local LAGs have the same set of VLANs on them. Our API will simply take a list of port objects from any amount of switches in a Plexxi network and turn them into an MLAG. An then you can simply take that entire entity and stick a VLAN on top, we will make sure the participating switches get the pieces they need. That is abstraction, that is workflow encapsulation, that is what APIs are supposed to give you. That is how simple LAG is supposed to be.

We have a long way to go as an industry to get to full APIs the way real software folks think about APIs. The CLI is not it. Scripting against a CLI (or a CLI hidden behind a layer of official sounding API terms) is a useful tool, but one that should be mostly retired to get to true programmable networks that are controlled by real controller (in the broadest definition of the word) using real APIs. Automation is not scripting.

[Today's fun fact: to make sure you do not think I am anti scripting, I once wrote a large chunk of a 10,000 line Perl4 system. It functioned very nicely for years as the RIPE database for IP address allocations back in the mid 90s. Thankfully it has since been tackled by real software engineers.]

The post Scripting is automation, but automation is not scripting appeared first on Plexxi.

Read the original blog entry...

More Stories By Marten Terpstra

Marten Terpstra is a Product Management Director at Plexxi Inc. Marten has extensive knowledge of the architecture, design, deployment and management of enterprise and carrier networks.

@ThingsExpo Stories
From 2013, NTT Communications has been providing cPaaS service, SkyWay. Its customer’s expectations for leveraging WebRTC technology are not only typical real-time communication use cases such as Web conference, remote education, but also IoT use cases such as remote camera monitoring, smart-glass, and robotic. Because of this, NTT Communications has numerous IoT business use-cases that its customers are developing on top of PaaS. WebRTC will lead IoT businesses to be more innovative and address...
In his session at @ThingsExpo, Sudarshan Krishnamurthi, a Senior Manager, Business Strategy, at Cisco Systems, discussed how IT and operational technology (OT) work together, as opposed to being in separate siloes as once was traditional. Attendees learned how to fully leverage the power of IoT in their organization by bringing the two sides together and bridging the communication gap. He also looked at what good leadership must entail in order to accomplish this, and how IT managers can be the ...
SYS-CON Events announced today that Secure Channels, a cybersecurity firm, will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Secure Channels, Inc. offers several products and solutions to its many clients, helping them protect critical data from being compromised and access to computer networks from the unauthorized. The company develops comprehensive data encryption security strategie...
"DX encompasses the continuing technology revolution, and is addressing society's most important issues throughout the entire $78 trillion 21st-century global economy," said Roger Strukhoff, Conference Chair. "DX World Expo has organized these issues along 10 tracks with more than 150 of the world's top speakers coming to Istanbul to help change the world."
Recently, WebRTC has a lot of eyes from market. The use cases of WebRTC are expanding - video chat, online education, online health care etc. Not only for human-to-human communication, but also IoT use cases such as machine to human use cases can be seen recently. One of the typical use-case is remote camera monitoring. With WebRTC, people can have interoperability and flexibility for deploying monitoring service. However, the benefit of WebRTC for IoT is not only its convenience and interopera...
When shopping for a new data processing platform for IoT solutions, many development teams want to be able to test-drive options before making a choice. Yet when evaluating an IoT solution, it’s simply not feasible to do so at scale with physical devices. Building a sensor simulator is the next best choice; however, generating a realistic simulation at very high TPS with ease of configurability is a formidable challenge. When dealing with multiple application or transport protocols, you would be...
What sort of WebRTC based applications can we expect to see over the next year and beyond? One way to predict development trends is to see what sorts of applications startups are building. In his session at @ThingsExpo, Arin Sime, founder of WebRTC.ventures, discussed the current and likely future trends in WebRTC application development based on real requests for custom applications from real customers, as well as other public sources of information.
SYS-CON Events announced today that App2Cloud will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place on Oct. 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. App2Cloud is an online Platform, specializing in migrating legacy applications to any Cloud Providers (AWS, Azure, Google Cloud).
SYS-CON Events announced today that Calligo has been named “Bronze Sponsor” of SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Calligo is an innovative cloud service provider offering mid-sized companies the highest levels of data privacy. Calligo offers unparalleled application performance guarantees, commercial flexibility and a personalized support service from its globally located cloud platform...
IoT is at the core or many Digital Transformation initiatives with the goal of re-inventing a company's business model. We all agree that collecting relevant IoT data will result in massive amounts of data needing to be stored. However, with the rapid development of IoT devices and ongoing business model transformation, we are not able to predict the volume and growth of IoT data. And with the lack of IoT history, traditional methods of IT and infrastructure planning based on the past do not app...
To get the most out of their data, successful companies are not focusing on queries and data lakes, they are actively integrating analytics into their operations with a data-first application development approach. Real-time adjustments to improve revenues, reduce costs, or mitigate risk rely on applications that minimize latency on a variety of data sources. Jack Norris reviews best practices to show how companies develop, deploy, and dynamically update these applications and how this data-first...
Intelligent Automation is now one of the key business imperatives for CIOs and CISOs impacting all areas of business today. In his session at 21st Cloud Expo, Brian Boeggeman, VP Alliances & Partnerships at Ayehu, will talk about how business value is created and delivered through intelligent automation to today’s enterprises. The open ecosystem platform approach toward Intelligent Automation that Ayehu delivers to the market is core to enabling the creation of the self-driving enterprise.
Internet-of-Things discussions can end up either going down the consumer gadget rabbit hole or focused on the sort of data logging that industrial manufacturers have been doing forever. However, in fact, companies today are already using IoT data both to optimize their operational technology and to improve the experience of customer interactions in novel ways. In his session at @ThingsExpo, Gordon Haff, Red Hat Technology Evangelist, shared examples from a wide range of industries – including en...
Consumers increasingly expect their electronic "things" to be connected to smart phones, tablets and the Internet. When that thing happens to be a medical device, the risks and benefits of connectivity must be carefully weighed. Once the decision is made that connecting the device is beneficial, medical device manufacturers must design their products to maintain patient safety and prevent compromised personal health information in the face of cybersecurity threats. In his session at @ThingsExpo...
"The Striim platform is a full end-to-end streaming integration and analytics platform that is middleware that covers a lot of different use cases," explained Steve Wilkes, Founder and CTO at Striim, in this SYS-CON.tv interview at 20th Cloud Expo, held June 6-8, 2017, at the Javits Center in New York City, NY.
"We're a cybersecurity firm that specializes in engineering security solutions both at the software and hardware level. Security cannot be an after-the-fact afterthought, which is what it's become," stated Richard Blech, Chief Executive Officer at Secure Channels, in this SYS-CON.tv interview at @ThingsExpo, held November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA.
SYS-CON Events announced today that IBM has been named “Diamond Sponsor” of SYS-CON's 21st Cloud Expo, which will take place on October 31 through November 2nd 2017 at the Santa Clara Convention Center in Santa Clara, California.
SYS-CON Events announced today that Massive Networks will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Massive Networks mission is simple. To help your business operate seamlessly with fast, reliable, and secure internet and network solutions. Improve your customer's experience with outstanding connections to your cloud.
Everything run by electricity will eventually be connected to the Internet. Get ahead of the Internet of Things revolution and join Akvelon expert and IoT industry leader, Sergey Grebnov, in his session at @ThingsExpo, for an educational dive into the world of managing your home, workplace and all the devices they contain with the power of machine-based AI and intelligent Bot services for a completely streamlined experience.
With tough new regulations coming to Europe on data privacy in May 2018, Calligo will explain why in reality the effect is global and transforms how you consider critical data. EU GDPR fundamentally rewrites the rules for cloud, Big Data and IoT. In his session at 21st Cloud Expo, Adam Ryan, Vice President and General Manager EMEA at Calligo, will examine the regulations and provide insight on how it affects technology, challenges the established rules and will usher in new levels of diligence a...