IWL's Expert Insights on Network Emulation and Protocol Testing
IWL Announces New Patent Licensing Program
IWL today announced a new patent licensing program for manufacturers and end users who use the technology of the Maxwell Patent. IWL is the owner of US patent number 7,310,316. The Maxwell Patent is directed to a test device placed between two or more nodes, in which the nodes communicate in conversations according to a predetermined protocol such as TCP/IP …
GRAV "Gateway Timeout" Issues
About a year ago we begin switching our various websites to use content management systems (CMS) that did not require SQL databases, or any database for that matter. We looked at GRAV and Hugo. The latter is highly portable and very fast, but for our more dynamic websites we decided to use GRAV.
In general we have been quite happy with GRAV, but recently we encountered a problem in which users began to see "Gateway Timeout" errors …
Avoiding Internet Timer Synchronization
The internet is a complex distributed process in which computers interact with one another over pathways that introduce delays and errors. There are many feedback loops. Some of those loops are simple to identify, such as the handshaking between the end points of a TCP connection. Other loops are harder to identify, such as the interaction of timers in ARP (address resolution), DNS (domain name system), and routing protocols (such as OSPF and BGP) …
A Deep Dive into Bit Counting
The question of “how many bits” were sent and received clearly is a matter of interest when measuring data rates or data quantities. Mobile providers, consumer ISP's, consumers, and regulators talk a lot about their speed and (not so often) about their data caps. But rarely, if ever, are sufficient details provided …
Women in Automotive (lots of us)
Women who work in automotive technology met at the British Bankers Club in Menlo Park last night for a lively discussion. The women represented many facets of the industry — research scientists at the major automotive companies, new infotainment and VR startups, regulatory and compliance lawyers, venture capitalists, and, of course, automotive test solution suppliers, like IWL …
Waveforms in KMAX
Real network conditions are rarely static. Real life networks suffer transient conditions – congestion builds up and dissipates, tree branches wave in the wind across radio links, long distance routing paths change, VoIP call trunks are filled with more calls during working hours than during the evening.
KMAX and our Maxwell Pro can emulate these kinds of changes …
ESP8266/NodeMCU TCP Test Reveals Issues
The ESP8266 is very popular among the maker set as a platform for experimentation in the realm of Internet of Things (IoT). We have been playing around with the ESP8622 micro-controller running NodeMCU. We’ve been loading simple LUA programs onto the ESP8266 to get familiar with its capabilities …
IWL Quarterly Update: Fall 2015
Our newest client, VT iDirect transforms the way the world gets and stays connected. As a global leader in IP-based satellite communications, VT iDirect provides technology and solutions to enable service providers and partners optimize their networks …
Degrading the Network at the DARPA Robotics Finals
Much has been written about the robots, the competition, and the tasks at the DARPA Robotics Finals. This article examines the unique elements of the Network Operations Center (NOC) and the Degraded Communications. IWL was part of the network infrastructure team preparing for the finals for 20 months prior to the event. Here is our unique perspective …
Network Congestion And Net Neutrality: The Debate Over Bandwidth Utilization
The ground breaking FCC ruling on Net Neutrality has continued to stir the debate on whether corporations or the government should be in charge of regulating the use of the internet. Last week The Wall Street Journal published an article by Holman W. Jenkins: The Gigabit Distraction. This article makes some misleading and “distracting” claims about network neutrality …
IWL Quarterly Update: Spring 2015
On May 12, 2015 IWL’s CEO Chris Wellens presented to the Silicon Valley Automotive Open Source Meetup on the campus of Mentor Graphics to automotive professionals. She covered the testing of ECU and related modules, along with Infotainment and Assisted Driver systems …
IWL Quarterly Update: Spring 2014
New Echo Server for Maxwell Pro TCP Test Environment
Instrument a TCP or UDP stack so that it responds to input streams in minutes, not hours. The new Echo Server provides support for Windows, OS X, Linux, and BSD systems …