10 years ago, in IEEE 802.3, a working group of standard specifications for Ethernet, issued a Call for Interest or CFI to propose a new Ethernet powering solution called “Power over Data Lines” (PoDL). This new standard was designed to improve upon 1000BASE-T1, another Ethernet standard that had just been introduced, which offered gigabit speeds over a single copper twisted pair, instead...
The latest IEEE 802.3 standard has enhanced power capabilities and data transports for both industrial and automotive markets. With this breakthrough, PoDL and SPoE technologies have been making their way into the market. Learn more about these technologies in this brief overview.
What is PoDL?
PoDL stands for Power over Data Lines (PoDL) and delivers from 0.5 to 50 watts of power from 12, 24 or 48 volts DC power classes. This technology was originally designed...
As defined by the IEEE 802.3 Working Group, Auto-Negotiation is the process that Ethernet Devices use to identify and resolve the highest possible link between two devices. In simplified terms, Auto-Negotiation aids a user in finding the highest and most efficient operating speed for their system.
Featured between the Physical and Data Link layers on an OSI Model, Auto-Negotiation is responsible for finding the link speed between two link partners. In order to do so, the system transmits a...
As a full-time undergraduate student pursuing a computer science B.S. degree at the University of New Hampshire, one might be surprised to learn I have the time or expertise to work on assisting in the delivery of the first vIOLett 802.1 Core layer 2 application suite. I have been working in the Ethernet Switching Protocols (ESP) test group at the University of New Hampshire - InterOperability Laboratory (UNH-IOL) for 4 years. In ESP, we have been working on a new...
Hello World,
We are Jimmy Trinh and Chip McNaughton, Computer Science students at the University of New Hampshire. We work at the University of New Hampshire - InterOperability Lab (UNH-IOL) in the Ethernet Switching Protocols (ESP) Consortium. In ESP, vendors send devices to us to perform conformance and interoperability test evaluation. We deal with Layer 2 switches and data center devices. This winter we started to work on one of ESP’s ongoing software development projects, ESP-vIOLett (versatile IOL-evaluation test tool). The goal of ESP-vIOLett is to help automate our test suites and create a product that is usable for industry. Vendors will then be able to pre-test their equipment in-house before it is officially tested at the IOL.
This week UNH-IOL is holding our 3rd Plugfest with the Open Compute Project (OCP) Networking Group. Our earlier events were focused on defining and improving our testing processes, but this event is special. We’ll be using everything we’ve learned as a community over the last year to prove interoperability of Open Networking by incorporating open testing, then using that to publish sets of known interoperable Open Networking solutions.
iSCSI over Data Center Bridging (DCB) interoperability testing verifies the functionality of the DCB protocol when integrated with iSCSI traffic among a set of devices from a variety of vendors. Throughout the testing process, several device topologies are incorporated to observe behavior in a collection of scenarios. Since the technology is still in a relatively early stage, the protocols defining its implementation are subject to change. As a result, this creates a small set of complications that must be addressed in order to successfully carry out the testing procedure.
While the IEEE 1588v2 specification can no longer be considered a new standard, its presence is still felt in new application areas. The scope of the standard is expanding into emerging and existing markets such as Smart Grid, telecommunications, industrial manufacturing, audio/video bridging, and data centers, and as a result, many companies are developing products that implement the standard. As implementation of IEEE 1588v2 continues to expand across various industries, the presence of interoperability issues also increases. This scenario has been illustrated in the past by other standards that experienced a similar uptake in broad market adoption.