Jacob Hess
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Jacob Hess
EP08: Interview with Stephen Lynch – CCIE at age 21 and CSE at Cisco Meraki
Stephen has been in the IT industry for 8 years and got his start with the Cisco Networking Academy. He holds a CCIE in Routing & Switching which he obtained at the very young age of 21. Stephen has worked as an Instructor, a Pre-Sales Engineer, and is now a Consulting Systems Engineer for Cisco Systems working in the Meraki Cloud Business Unit.
EP07: Interview with Jacob Hess – CoFounder of NexGenT
Jacob Hess is an entrepreneur and systems engineer who has over 15 years experience in Information Technology. Working in both the customer and systems integrator environments he has designed and deployed many complex IT projects spanning the full stack of networking technologies. Jacob is also a United States Air Force veteran who served as a technical instructor and trained hundreds of network engineers to be job ready for the Department of Defense. He is the Co-founder & COO of Nexgent and is passionate about inspiring, creating, and empowering the next generation of IT engineers.
EP06: Tech Lesson – Understanding Basic Network Traffic
In this episode of Rockstar SE Jacob Hess and Terry Kim discuss basic network traffic concepts. They break down topics such as collision domains and broadcast domains and how those concepts relate to network traffic and the world of network engineering. Join them in this Tech Lesson to learn more and don’t forget to download your free PDF!
Tech Lesson PDF: Understanding Basic Network Traffic
EP05: Tech Lesson – The OSI Model
Take a deep dive into the OSI model and learn what it’s all about! The OSI model is a foundational topic that all IT engineers need to understand. In this Tech Lesson episode Jacob and Terry guide you through all the OSI layers and how they relate to the real world of network engineering!
Tech Lesson PDF Download: The OSI Model
Intro to Tcl Scripting on Cisco IOS
What is a Tcl Script? Also known as “tickle”, Tcl (Tool Command Language) is a scripting language commonly used for rapid prototyping, scripted applications, GUIs, and … testing! Cisco IOS has a form of Tcl scripting built in which can be used for automating tests and tasks from within the IOS command line. To begin scripting with Tcl on a Cisco router for example you would first need to enter the Cisco IOS Tcl shell by typing “tclsh” from the priviledged exec mode (Router# tclsh) which brings the router prompt to Router(tcl)#. If you are able to access this tcl-level mode it means Tcl is supported on your IOS device and you can begin to enter your script commands.
In this post we will see what it takes to use tcl scripting to automate a series of ping commands for testing layer 3 connectivity to multiple IP destinations. Before we get started we should note that it is best to first write out the script in your favorite text editor such as Notepad or Sublime Text. This way we can paste the script into the CLI when it is ready and also save it for future reference and Continue reading