The Many Uses of Network Observability
[This post is jointly written by Justin Pietsch and Dinesh Dutt]. Observability is an important concept in distributed systems these days. It is taken from control systems, which has a very precise mathematical definition. From Wikipedia: “It is a measurement of how much of the internal state of the system...Tech Bytes: Dell Technologies With Intel Partner To Deliver An Innovative Microsoft Azure Stack HCI (Sponsored)
Today's Tech Bytes podcast, sponsored by Dell Technologies, examines an Azure Stack HCI offering from Dell EMC. Dell worked with Intel and Microsoft to optimize the performance and scale of the Azure Stack platform, including the use of Intel Optane's persistent memory. Our guests are Jayanth YK, Sr. Cloud Architect - Microsoft Hybrid Cloud at Dell Technologies; and Chris “Murph” Murphy, Regional Sales Director at Intel.Tech Bytes: Dell Technologies With Intel Partner To Deliver An Innovative Microsoft Azure Stack HCI (Sponsored)
Today's Tech Bytes podcast, sponsored by Dell Technologies, examines an Azure Stack HCI offering from Dell EMC. Dell worked with Intel and Microsoft to optimize the performance and scale of the Azure Stack platform, including the use of Intel Optane's persistent memory. Our guests are Jayanth YK, Sr. Cloud Architect - Microsoft Hybrid Cloud at Dell Technologies; and Chris “Murph” Murphy, Regional Sales Director at Intel.
The post Tech Bytes: Dell Technologies With Intel Partner To Deliver An Innovative Microsoft Azure Stack HCI (Sponsored) appeared first on Packet Pushers.
Dictionary: Firewall Rulette
Define the term 'firewall roulette'
The Hedge Podcast #53: Deprecating Interdomain ASM
Interdomain Any-source Multicast has proven to be an unscalable solution, and is actually blocking the deployment of other solutions. To move interdomain multicast forward, Lenny Giuliano, Tim Chown, and Toerless Eckhert wrote RFC 8815, BCP 229, recommending providers “deprecate the use of Any-Source Multicast (ASM) for interdomain multicast, leaving Source-Specific Multicast (SSM) as the recommended interdomain mode of multicast.”
A Decade of Blogging
Today is a milestone for me. Ten years ago I picked up a virtual notepad for the first time and committed my first blog post to the ether. It’s been a wild ride ever since. It also marks the milestone of being the job that I’ve held the longest so far in my career.
Blogging has been a huge boon for me. I’ve become a better writer in the last decade. I’ve learned how to ask the right questions and get good material for a story instead of just putting out what someone wants me to say. I’ve learned that being a pseudo-journalist is a thing you can do and have fun with.
I’ve written a ton over the years. 751 posts, as a matter of fact (counting this one). I’ve always tried to hold myself to a standard of getting something out once a week. Aside from the few times when I’ve tried to push that to twice a week I’ve held up pretty well. Yeah, I’ve slipped and the day job has gotten in the way more than once. However, keeping myself to a strict schedule has ensured that my attention stays focused on this blog and that Continue reading
Day Two Cloud 067: Choosing The Right Applications For The Cloud With SolarWinds (Sponsored)
What apps belong in the cloud and which are better on premises? Dave Wagner, Senior Manager, Product Marketing at SolarWinds, joins Day Two Cloud to develop a strategy and find the right tooling to help you make the best decision. SolarWinds is the sponsor for today's episode.Day Two Cloud 067: Choosing The Right Applications For The Cloud With SolarWinds (Sponsored)
What apps belong in the cloud and which are better on premises? Dave Wagner, Senior Manager, Product Marketing at SolarWinds, joins Day Two Cloud to develop a strategy and find the right tooling to help you make the best decision. SolarWinds is the sponsor for today's episode.
The post Day Two Cloud 067: Choosing The Right Applications For The Cloud With SolarWinds (Sponsored) appeared first on Packet Pushers.
Response: Paradox: Covid crisis elevates technology professionals’ stature, but limits career growth | ZDNet
This article fails at making the case that workers don’t like remote work.
pygnmi 1. Intro to pure Python gNMI module by karneliuk.com.
Hello my friend,
It took a while since our latest post from the Code Express (CEX) series. During this time we were working heavy to launch an advanced version of our industry-leading network automation training. However, this time we were working on something special…
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Automate all the network things
Each and every element in the network can be automated. It is always the question, if it shall be. Both of these questions are subject to our training:
- We teach you how automate each and every network function in your network.
- We teach you how to identify, what makes sense to automate, what not, and how to make your network automation successful.
At our network automation training (either live or self-paced) you will guide you from the foundation of the automation for the small networks till advanced automation use cases in big data centres, and clouds. You will lean how to structure the data using YANG Continue reading
Using Flow Tracking to Build Firewall Rulesets… and Halting Problem
Peter Welcher identified the biggest network security hurdle faced by most enterprise IT environments in his comment to Considerations for Host-based Firewalls (Part 1) blog post:
I have NEVER found a customer application team that can tell me all the servers they are using, their IP addresses, let alone the ports they use.
His proposed solution: use software like Tetration (or any other flow collecting tool) to figure out what’s really going on:
Cable testing on Juniper EX switches
Does anyone use the cable test feature on EX switches? Did you even know you could do this kind of thing?
In case you didn’t, here is a bit of background and an example.
The Time Domain Reflectometer (TDR) test has been available on the EX switches for some time, but not a lot of people seem to know about it. What is TDR, I hear you ask?
A futuristic-sounding thing, what a TDR does is send a signal down a cable and measure how much (if any) is reflected by the far end. If the cable is damaged a little way along its length, the TDR test will tell you that distance to a fair level of accuracy.
In an ethernet cable, there are four pairs of conductors – eight wires in total. The operative ones are 1 & 2, and 3 & 6. The other conductors are unused but their presence in the Cat5 or Cat6 cable helps prevent cross-talk and signal attenuation. In a lab, usually cables are fairly short and easily replaced, but in a working environment, cables in floor-boxes under desks, or the structured wiring under the raised floor in an office often suffers quite Continue reading