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Ivan Pepelnjak
1,431 followers
1,431 followers
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Ivan Pepelnjak's posts

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Teach IPv6 First and Automate the Deployment
In mid-July dr. Olivier Bonaventure (one of the unsung networking heroes who’s always trying to address real-life problems instead of inventing unicorn solutions in search of a problem) sent an email to v6ops mailing list describing how they teach networkin...

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Feedback: Open Networking for Large-Scale Networks
Got this feedback from a network architect attending the Open Networking for Large-Scale Networks webinar: I used the webinar when preparing for a meeting/discussion with a NOS SW-vendor. In the meeting, my knowledge was completely up-to-speed & I was on th...

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Interview with Daniel Dib
Daniel Dib is setting up a networking career (from a down-to-earth engineer’s perspective) web site, and started populating it with numerous interviews with fellow networking engineers and architects (all of them well worth reading). Here are my answers to ...

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RFC 8212: Bringing Sane Defaults to EBGP
It’s amazing how long it can take to get some sanity into networking technologies. RFC 8212 specifies that a BGP router should not announce prefixes over EBGP until its routing policy has been explicitly configured. It took us only 22 years to get there… Fo...

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Net Neutrality (Again and Again and Again)
Net neutrality is one of those topics that should never have existed, but of course it inevitably erupts every so often, so here we go… Not so long ago Robert Graham published his anti-net-neutrality arguments which are (no surprise) not much different from...

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RFC8200: IPv6 Is an Internet Standard
You wouldn’t believe it – after almost 22 years (yeah, it’s been that long since RFC 1883 was published), IPv6 became an Internet standard ( RFC8200/STD86 ). No wonder some people claim IETF moves at glacial speed ;) Speaking of IPv6, IETF and glacial speed...

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New in Ansible for Networking Engineers
I’ve added two new case studies to Ansible for Networking Engineers online course: Create network diagrams from LLDP information playbook focuses on creating a single summary report based on information from numerous devices (and the report just happens to ...

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PRTG Monitoring Software Now Available in Cloud Version
One of the more interesting presentations we had during Tech Field Day Extra @ Cisco Live Berlin was coming from Paessler, a company developing PRTG, a little-known network monitoring software. More about PRTG in TFD videos and here , here , here and here ....

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RFC 8196: IS-IS Autoconfiguration
Finally a group of engineers figured out it’s a good idea to make things less complex instead of heaping layers of complexity on top of already-complex kludges. RFC 8196 specifies default values and extensions to IS-IS that make it a true plug-and-play rout...

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Promises Gone Wild
I got several interesting replies to my automation and orchestration blog post. Some of them were so far in the land of alternate definitions that they were literally off the charts. Here’s one of the best I got in that category: Orchestration is a group of...
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