Looking back at my career in network engineering, beyond some basic concepts and naming conventions, I cannot remember using the OSI model once. Not for troubleshooting, not for protocol design. I have used the concept of layering, but never the OSI model specifically.
The post Is The OSI Model Good For Understanding How Networks Work? Not Really appeared first on Packet Pushers.
It’s roundtable time at the Hedge! This month, Tom, Eyvonne, and Russ kick off the conversation talking about the value (and some dangers) of open source software. Fake Agile is up next—what does it really mean to be agile, and can organizations use agile tools without being truly agile? Finally, cloud computing, vendors, and skills come to the fore.
transcript will be provided in a few days
This show was produced by Ashlyn Boyd
In this episode, Michael catches up with Anton Smith, Head Of Product at Spectro Cloud. This episode goes outside of the standard engineering conversation and into a conversation of why it makes sense for Technical Product Managers (TPMs) to not only get a certification like the Certified Kubernetes Administrator (CKA), but why staying technical as a TPM in the Kubernetes space helps you with your job.
The post Kubernetes Unpacked 029: Kubernetes And Certifications For Product Managers appeared first on Packet Pushers.
Earlier this month at Cisco Live in Las Vegas, I attended a presentation by Steven Carter and Jason King titled Model-Driven DevOps: The Enterprise Automation Framework You've Been Looking For! They discussed the importance of robustly modeling your network data — a quality very dear to me, as you might expect — and having a clear strategy for automating changes, and shared an example automation architecture for reference. It was a refreshing take on introducing network engineers to DevOps methodologies, and the first time I've seen anyone clearly map software development practices to network automation.
Interested to dive deeper into the material than a 45-minute session would allow, I was pleased to learn that their talk derived from a book of the same name that they co-authored. Coupled with the lingering geeky high from Cisco Live, it made for an excellent read on the flight back home.
The book's content is broken into seven easily digestible chapters, each dedicated to a particular step along a path toward network automation:
Today's IPv6 Buzz podcast gets into IPv6 architecture and subnetting including how geography fits into IPv6 subnetting, minimum allocation sizes from the RIR to end-users, whether current RIR policies will provide sufficient address space for a future-proof IPv6 architecture, and more. Our guest is Daryll Swer.
The post IPv6 Buzz 129: IPv6 Architecture And Subnetting With Daryll Swer appeared first on Packet Pushers.
Managers often ask employees to write a first draft of their performance review. If you’re expected to draft a performance summary, here are a few ideas to mitigate the stress of self evaluation and to help your manager help you.
The post Writing Your Own Performance Evaluation: Tips To Make It Not Suck appeared first on Packet Pushers.
In this blog we introduced the idea for a new smarter way of handling inventory based on the Ansible constructed plugin. Now in Ansible Automation Platform 2.4, we have introduced this as a fully supported feature and this blog aims to introduce you to it!
Constructed inventory is the successor to the existing Smart Inventory feature, and is now presented as another choice when creating an Inventory in Ansible Automation Platform controller. This will take a list of ‘normal’ inventories as input, perform user-defined operations, filter, and produce a resultant inventory with content from the input inventories.
The function is similar to the existing smart inventory - in that it allows users to run jobs against hosts in multiple inventories.
Constructed inventory however introduces new capabilities, including the built in ability to define and use both hostvars and groupvars: