Category: Uncategorised

rsync go, NASA SP287, git options, Undersea cable failures in Africa, Quotes, Log4j, done list, Dan Lynch, Systems-based Productivity, Run Africa

rsync go: Interesting talk about rsync, as it explains how it works and it is something I didnt know. But then, all other things/projects mentioned are cool and related. I need to try to install rsync go in my vm. ccc slides and repo

NASA to the moon: This is an engaging and provocative video regarding the Artemis III (project back to the moon II). He makes some hard questions to the people in charge (I have no clue about physics) and it seems he has a point. Not sure it this will get any effect but again, looks “smart”. When he mention the NASA SP287 (What made Apollo a success) document as the grial for going back to the moon, I wanted to get a copy (here) so I could read it one day.

Git options: Nice post about popular git config options. I am a very basic git user (and still sometimes I screw up) but the options to improve diff looks interesting so I will give it a go at work.

Undersea cable failures in Africa: It is clear that Africa relays heavily in submarine cables (it doesnt look like there are many cable systems intra continent). And the Red Sea is becoming a hot area due to different conflicts…

Quotes: I like the ones regarding simplicity:

A complex system that works is invariably found to have evolved from a simple system that worked. A complex system designed from scratch never works and cannot be patched up to make it work. You have to start over with a working simple system. (John Gall)

In programming, simplicity and clarity are a crucial matter that decides between success and failure. (Edsger Dijktra)

Log4j: This is old news but when it came out I tried to run the PoC but I failed 🙁 This is just a reminder. It was annoying because I manged to install all tools but never managed to exploit it.

Done List: I feel totally identified. The to-do list is never done and you feel guilty. Done-list, much healthier.

Dan Lynch: He passed away, and as usual on my ignorance, it seems he is one of the unsung heroes of Internet, migrating ARPANET to TCP/IP.

Systems-Based Productivity: TEMPO refers to five dimensions of productivity: T (Time Management), E (Energy Management), M (Mindset), P (Proficiency) and O (Organization).

Run Africa: very jealous.

Infraops challenge, Devika, Daytona, NTP 2038, Linux Crisis Tools, videos, Chocolonely, LLM, Transformers, Enforce-first

InfraOps challenge: A bit beyond me, but interesting If you could try without applying for the job.

Devika: Agent AI. Another thing I would like to have time to play with it. If you have API keys for some LLMs, looks like it shouldn’t be difficult to run and you dont need a powerful laptop (?)

Daytona: My development environment is a joke, just python envs. But I guess for more serious devs, could be interesting

NTP and year 2038: Agree, when it is not DNS, it is likely NTP (seen this with VPNs and SSL certs in boxes with NTP unsync), or something blocking UDP.

Linux crisis tools: I haven’t got my hands dirty with BPF but I am surprised with so many tools. I would add nc, netstat, lsof, traceroute, ping, vim, openssl etc but because I do pure networks.

Jim Kwik: How to improve your reading speed. One improvement is you use your finger or a ruler. Need to watch again.

Rich Roll: The guy is super chill. I would like to be able to do some ultra at some point in life… Very personal conversation.

Ferran Adria: I didnt know much about the person apart from being one of the best Chefs in history. I like how he starts the interview and take over for 15 minutes. Haven’t watched till the end. But just the beginning is priceless.

Mark Manson: I have read all his books and his emails. Interesting his story.

Chocolonely: I didnt know it was a dutch company and interesting history behind. I want to try one day, but I haven’t found a dark choco version.

LLM in 1000 lines puce C: I was always crap at C. But interesting this project as something educational and intro in LLM.

Visual intro to transformers: The easy joke, unfortunately, this is not about Optimus Prime.

Indonesia Heavy Metal Girls: Unexpected. Respect.

Enforce-first-as: I dint know about this until last week. Cisco defined by default. Juniper disabled by default. And this makes sense with Route Servers.

Love Languages, imposter syndrome, self-compasion, GTC-2024, Juniper Express 5

Love Languages: I read this book in 2018. The conclusion I took at that time (and a bit late…) it is that you have to F*! communicate…

Interesting story about imposter syndrome:

We’d like to believe that if we only had the adulation, market success, and fan support of superstars like these, then we’d finally be comfortable and able to do our best.

In fact, it seems the opposite is true. Imposter syndrome shows up because we are imposters, imposters acting ‘as if’ in search of making something better.

Perhaps the best plan is to show up and not walk out.

Self-compassion: Something I have learnt the hard way, and I think at the beginning works but long term doesn’t. I practice it often while climbing and honestly, I feel the difference, and sometimes is mindblowing. Nobody is going to cheer me up so I better off doing it myself.

GTC-2024: Like last year, I registered to watch some conferences. As a network engineer, I haven’t been able to see any (good) recording, just pdfs…. so quite disappointing. This is a summary from somebody that was on site and says it was great. And some other notes that they look interesting: keynote (nvlink and infiniband at 800G), nvdia dgx gb200 (indeed we need nuclear energy to feed all this…)

Juniper Express 5: Looks quite an interesting ASIC. But as far as I can see most ASICs for DC and AI/ML come from Broadcom and the main players are Cisco/Arista. I like the feature of deep buffers.. this is still a bit of a religious dilema… deep vs shallow buffers. And looks like it was announced in HotChips 2022.. so it is not very new? And only in PTX platform. What is the future of QFX?

Sales Psychology, BERT testing, EVPN asymmetric/symmetric, git sync fork

Sales Psychology: I have noticed with myself lately, since I subscribed to a youtube channel, everything is a “negativity bias”. I can’t see any video with a positive message. I subscribed because I want to learn and improve but the publicity is wrong.

BERT Testing: I wonder if there is anything opensource.

Git sync fork. This something I have never tried before

1- Add remote

0) check your remote
git remote -v
1) Add new remote
git remote add upstream URL
2) git fetch/pull from the upstream
git pull upstream

EVPN VXLAN Asymmetric/Symmetric routing: blog1

Asymmetric IRB
– Ingress VTEP does both L2 and L3 lookup
– Egress VTEP does L2 lookup only
– Bridge – Route – Bridge
– Pros: “easy” to configure – just copy/paste. Identical config with the only difference in SVI IP addresses.
– Cons: on the way back, traffic will be reversed => all VXLANs need to be configured on all VTEPs => increased ARP cache and CAM table sizes and control plane scaling issue => not very efficient.

Symmetric IRB
– Ingress VTEP does both L2 and L3 lookup
– Egress VTEp does both L3 and L2 lookup
– Bridge – Route – Route – Bridge
– L3 VNI should be configured on all VTEPS, L2 VNIs only where local ports exist

Other things about EVPN: link1 link2

Life, Love, Sex, Negative Beliefs, startup regrets, nanog90, Groq LPU, LLM from scratch, ssh3, eBFP BGP, RPKI, TIANHE-3

I hit rock bottom this week. I hope I finally closed one door in my life so I give myself the chance to open others. Made the wrong decision? It is easy when you look back. Do I regret it? The most annoying thing is these are failures so you can’t go back and recover. But I was so bloody newbie!!!…. At least after 5 years…

“For every reason it’s not possible, there are hundreds of people who have faced the same circumstances and succeeded.” Jack Canfield

Head down, crying, cursing, whatever, but forwards. As it has always been.

—-

Somehow managed to list to long videos, something I normally can’t manage (because lack of time, etc)

Negative Beliefs, avoid bitterness, aim for greatness (remarkable things), scape the darkness: Jordan B Peterson with Modern Wisdom: video, podcast.

Find and keep Love: video. 1st Get your shit together. Communication is critical. Be careful with your shopping list….

Good Sex: video. Communicate….

Orgasm: video. Haven’t seen it completely yet but very interesting. Use your tongue wisely.

— Other things:

Startup decisions and regrets: page. Interesting. I think most of things are very specific but still good to read.

Nanog90: agenda I didnt want the videos but I reviewed several pdfs and these ones look interesting:

Abstract Ponderings: A ten-year retrospective. Rob Shakir – Google: video

https://rob.sh/post/reimagining-network-devices/
https://rob.sh/post/coaching/
https://cdn.rob.sh/files/the-next-spring-forward_2018.pdf
https://research.google/research-areas/networking/

AI Data Center networks – Juniper – video

Using gNOI capabilities to simplify software upgrade use case: video – I had to idea about gNOI so looks interesting. It is crazy that still in XXI, automating a network device is so painful. Thanks to all vendors to make your life miserable.

Go lang for network engineers: video slides– I always thought that Golang had a massive potential for network automation but there was always lack of support and python is the king. So nice to see that Arista has things to offer.

PTP in Meta: video and blog.

There are more things, but havent had the chance to review them.

—-

It looks there is new chatbot that is not using the standard NVIDIA GPU. Groq uses LPU (Language Processing Unit). And they say it is better than a GPU. They have this paper but I can’t really see feature of that LPU.

Slurp’it: Show this blog, and the product looks interesting but although is free, it is not opensource and at the end of they you dont want a new vendor-lockin

Container lab in kubernetes: Clabernetes. I would like to play with this one day.

NetDev0x17: videos and sessions. link This is quite low details and most of the time beyond my knowledge. Again, something to take a look at some point.

LLM from scratch: repo. Looks very interesting. But the book it is going to take a long time to hit the market.

ssh3: repo. Interesting experiment.

eBFP and BGP: blog. Really interesting. Another thing that always wanted to play with.

Orange RPKI: old news but still interesting to see how much damaged can cause RPKI in the wrong hands…

China TIANHE-3 Supercomputer: Very interesting. Link.

Mindset Doctor – Inner Strength – Stretching – LLM in your laptor

Mindset Doctor: I struggle watching long videos in youtube (lack of time, many things to do, excuse(x)). I liked he used the concepts of chimp/human/computer brains (that reminded me again to this book) And how clear he was saying you need to befriend your chimp, anxiety is natural!, you need your chimp to vent, etc etc.

Inner Strength: This is a different world of endurance and mental strength. I need to read the second book of David Goggins.

Gut health: Interesting, we need more fiber.

And I need to improve my stretching (another), mainly because running.

You can run a LLM in your laptop. I need to try to play with this things.

Meetings Breaks – Google Lens – Milgran Questions

Just take a break between meetings: link

Google Lens: I bought a plant last weekend and I dont know the type… so no idea how to look after it. GL can help you to identify photos. I was quite surprised (as google search is underperforming for some time…) This is my new plant, spineless yucca. Let’s see how long it survives me.

Milgran Questions: via 3MM. And anecdote about Churchill, interesting.

When punishment for what people say becomes widespread, people stop saying what they really think and instead say whatever is needed to thrive in the social environment.

Thus, limits on speech become limits on sincerity.