Roman Dodin
@ntdvps
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Network Programmability @Nokia "All my tweets are belong to us"
The Hague, The Netherlands
Joined September 2015
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Pinned Tweet
Are 🧠You 😶🌫️ Ready?
@go_containerlab
in
@kubernetesio
is here!
Not a whole week has passed after we hired
@carlrmontanari
when he submitted Clabernetes.
As he describes it:
Love containerlab? Want containerlab, just distributed in a kubernetes cluster? Enter clabernetes or
6
19
72
🚨This is not a drill🚨
🥳This day has come and I'm delighted it has happened on my birthday.
🚀Nokia makes its Data Center NOS - SR Linux - available to everybody without any regwall, paywall, licwall or any other wall typical for a vendor
It is finally OUT! ->🧵
25
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416
@ChPeter_AT
@JeffTutorials
And same goes for a shifter. Trying to make a 180 turn on a European narrow road will take 3-4 shifts while turning a wheel and visually controlling a distance. Stalk was great for doing it using muscle memory.
8
1
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🚨 I've been sitting on my hands for 3 months, but now the time has finally come...
🥼We are releasing containerlab - the open source CLI tool that may redefine the way you run networking labs.
It will be a long 🧵but I guarantee, you will dig it.
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285
Holy packets, Rotterdam centraal station square is Crystal clean, almost looks like a render
5
29
201
In the past 4 days, I learned more stuff about syslog and ELK than I wanted to ever know.
Somewhere midflight, I wanted to drop this blog post entirely as it felt like a constant uphill ride.
But hopefully, on Monday it goes live.
7
11
178
My colleague submitted a post to where he shared a lab that describes how EVPN-VXLAN fabric underpins k8s clusters and how k8s services map to EVPN services.
I personally find it very interesting, as quite often k8s is imagined as something that runs on
5
25
163
🥳Networkers, rejoice!
Today is the day when the networking community receives a gNMI tool it's been waiting for.
Let me introduce you to the gNMIc - the open source gNMI CLI client with collection capabilities -
5
37
140
I am still to master Grafana witchery; been keeping it "for later", but when I saw my colleague created this interactive link load map that colors the links based on the current utilization and displays active rate, I got sold immediately
Perfect use of
@drawio
flowhcart plugin
10
16
139
In 9 days we will host our biggest EMEA event - SReXperts.
My colleagues and I will man the booth where we showcase our community tools such as gnmic, gnoic and
@go_containerlab
To make this fun, we will run live demos! Just take a look at this state of the art dashboard!
12
25
135
💻Fellow Network Automation engineers,
today is a special day for YANG-based automation as we release the "YANG-completions" feature with gnmic v0.4
I have only 1m30s to convince you that it is a dream turned into reality (or a black magic 💀)
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I always was of an opinion that generating network diagrams is a very complex problem. But this library that generates drawio compatible files looks really promising!
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30
128
When I quit Nokia and get to fill in my achievements in the CV, one of them would be
🗣️ contributed to making people want to work at Nokia
And today is the manifestation of that self-admired statement because
@carlrmontanari
joins our amazing team 🥳.
Most of you might know
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2
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🥳 Containerlab 0.25.0 is out
Re-imagined graph feature is a crown jewel of this release and we hope you will like it as much as we do.
Besides that, we are ready for arista ceos 4.28 with added support for interface mapping files.
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This
@go_containerlab
lab fits in a 32GB RAM VM (without KSM) and counts 5 full-blown SP routers and 12 DC switches running EVPN VXLAN in the fabric and Segment Routing for DC Interconnect.
And its YAML definition is something my 9yo son could write without docs.
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My colleague Kevin Todts finished the Nokia SR OS Segment Routing lab and we, of course, published it online so that the community can prosper 🤘
Nowadays, all our labs are code - a repeatable, shareable and lightweight package.
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👛 I'd like to coin the term NetRel -- Netveloper Relations
👔as effective tomorrow I start as a Product Line Manager for SR Linux Programmability and External Community.
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Just some observations.
1. Arista joined containerlab community in its early days (kudos to aristian brothers)
2. Some Juniper folks were part of it for a long time but they become much more active in the past several months.
3. All Cisco-related contributions were done by
5
12
83
Every time I show
@go_containerlab
and
@WiresharkNews
integration, I see people's eyes go
👀👀👀
as if it was a magic trick.
Yes, you can sniff the traffic on any interface in your lab while piping it to your wireshark UI on your laptop with a single command.
Hence, I decided
2
23
83
⚡️⚡️⚡️ gNMIc joins
@openconfig
⚡️⚡️⚡️
Yes, what was a pet project 2000 commits ago now moves under the
@openconfig
group as a reference CLI for gNMI.
But gNMIc is way way more than just a CLI...
In this post I covered gNMIc's core features
➡️🧵
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Not all heroes wear ~~capes~~ twitter handles. My colleague Colin released a free e-book "Implementing Segment Routing with SR OS" which is available for download
Colin is an exceptional writer, do skim through the book even if you're not into SR OS.
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Twitter networking fam, we have some good news 🥳
Yesterday we published Netconf Client for
@code
It will be definitely a great aid for anyone dealing with NETCONF, as it provides all you wish for netconf operations right from the VS Code.
2
12
74
We are adding macvlan support for
@go_containerlab
. Thanks to
@ioshints
for pushing us implementing this and Markus (aka steiler) for adding the code in.
MACVLAN will alow you to create lab nodes that will directly connect to your host's interfaces and thus can be addressed from
3
12
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This is a great example of making a deeply technical demo exciting for tech nerds and execs alike.
The team leveraged containerlab to build a fancy WAN topology secured by MACsec on customer's side and ANYsec on the provider level.
A Flask backend with a trivial frontend has
2
13
71
SR Linux CLI is one of the best Network OS CLIs and the team and myself personally work on improving it constantly.
I will write a blog post about the Extended Ranges Syntax, but (as a teaser) check that.
Imagine you're dealing with a route table with many routes (pic
#1
) and
2
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71
Santa came early: Nokia YANG models are now opensourced and are available on GitHub with per-release branches, tags and all the love
Leaving you no excuses not to use the Netconf/gRPC automation with us.
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My den is finally close to completion. A few pieces are missing here and there, but it turned out to look and feel decent.
One detail will caught
@MaartjeME
eye I guess
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Next week at
@nanog
, Google folks will showcase KNE - their vision for networking labs running atop
@kubernetesio
.
We at SR Linux have been participating in the KNE project for the past ~12mo and made KNE run SR Linux using k8s operator framework.
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Okay, here goes my first attempt fitting the shoes of a content creator.
Please welcome the NetRel episode 001 - Decoding gNMI with Wireshark is a 35min journey of using Wireshark to parse the gNMI traffic (both non-secured and secured)
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At
@LINX_Network
#117
I will have 20 minutes to share how users can build IXP-focused lab using
@go_containerlab
.
Perfect environment to test IXP use cases:
- route server peerings
- ACL/MAC filtering
- BGP policies & RPKI validation
Tune in on 23Nov
4
10
65
Terrapin is a prefix truncation attack targeting the SSH protocol. More precisely, Terrapin breaks the integrity of SSH's secure channel.
Pretty scary stuff, innit? Any Network Engineer/Admin understands the importance of SSH in their daily work. It's the most common way to
3
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Hey all,
In two weeks we will be holding a special Network Automation Hangout dedicated to "Kubernetes Network Emulation" project that is led by Google.
A special guest - Marcus Hines - the tech lead of this project will join us to tell us all about it.
2
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One of our teams built a very cool interactive dashboard for the MACsec/ANYsec use case.
Quite solid that SR OS emulated datapath can support macsec and anysec for lab tryouts, make it so easy to demonstrate the encryption workflows and what it is capable of
2
10
64
😶Truth be told, I spent more time on this post that I dare to admit, but in the process I learned quite some things about
- logging in general
- syslog in particular
- and ELK stack on top of it all
🎁New interactive tutorial - SR Linux logging with ELK
5
16
63
Second time revisiting "Revisting BGP Data Center Design" by
@jtantsura
and Jeff Doyle
Good stuff.
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Next to me is
@networkop1
who joined
@_nleiva
in writing the the first in class, soon to be released, "Network Automation with Go" book.
Thrilled to hear that
@go_containerlab
and gnmic by
@Karimtw_
were a great supplement to make book's examples ready to be consumed by readers
5
2
63
We have refreshed our famous SR Linux Telemetry lab to feature latest 23.3.1 release.
Looking at the FlowChart panel is still mesmerizing, innit?
It starts with traffic flowing between client2->client1 and client3->client1 with traffic ECMP'd between uplinks of our L2EVPN
1
5
61
Polishing the MACSec/AnySec lab built by my colleagues to record a new NetRel episode explaining how it is built.
This is the first lab that sports the "Automation Panel" which is a simple bootstrap UI running on top of Flask and serves as a task executor
- start pings
-
2
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Stepping into 36. Taking my back to a massage session on Sunday 😅
Stay healthy y'all
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Getting ready to shoot
@go_containerlab
talk for
@nanog
Why does it always have to be so suspenseful a few hours before the recording time 😂
Can't imagine how much more stressful it is to do this in front of a big audience.
Building confidence is crucial in that line of work.
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I wonder why I waited so long to start using
@1Password
SSH agent, as it is a game changer.
Now I have a central store for all my SSH keys protected by 1Password and through its SSH Agent integration, keys are available anywhere I need them.
Also works seamlessly with
@code
and
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Still feels surreal that one can work on preparing 70 VMs for Autocon1 attendees while being 10k feet above the ground 🧐
Pst, I drained the private cloud, no more 6cpu/24GB VMs left, oopsie.
I also went and quickly checked what would it cost me to run 70 8vcpu/32GB VMs in
6
1
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Love how
@go_containerlab
and gnmic are now a powerhouse of the labs we create.
This pure SR OS lab showcases Segment Routing control plane with low latency path optimizations.
Traffic is pushed and displayed, and rerouting happens automatically when path delay changes.
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Can't recommend enough for blog authors to use
@drawio
integration format where you can embed vector graphics into your blog via a script tag and get a single source of truth for your drawings version controller in a git repo.
Everyone I show this to can't go back to raster
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Love the way the graphics are coming together for the SR Linux telemetry lab.
Should be a very decent lab with lots of use cases covering TPG stack, SR Linux gNMI telemetry & gNMIc-as-a-collector.
I wish SR Linux container image to be published sooner so you all can replay this
3
3
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I was not expecting so much attention to the IXP-purposed lab. So I decided to let you all play with it before the talk.
I published the lab and created a beautiful blog post covering all its details.
At
@LINX_Network
#117
I will have 20 minutes to share how users can build IXP-focused lab using
@go_containerlab
.
Perfect environment to test IXP use cases:
- route server peerings
- ACL/MAC filtering
- BGP policies & RPKI validation
Tune in on 23Nov
4
10
65
4
23
58
So I spent a few fun evenings with Grafana, Prometheus and
@drawio
flowchart plugin by and here is the result.
I think its 💎
A very compelling demo of a gNMI based streaming telemetry using Nokia SR Linux
I am still to master Grafana witchery; been keeping it "for later", but when I saw my colleague created this interactive link load map that colors the links based on the current utilization and displays active rate, I got sold immediately
Perfect use of
@drawio
flowhcart plugin
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139
6
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If you remember, we have been working on an AI assistant running on SR Linux in our automation garage.
I emphasized the fact that it runs on-box for a reason.
In contrast to ChatGPT-like assistants that know a lot about the world but nothing about your device, the srlgpt agent
2
9
58
From now on,
@go_containerlab
contributors will receive a complimentary SR Linux sticker with a glorified holographic background in addition to the containerlab sticker.
We will win your DC, one sticker at a time :D
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4
56
When Nokia VP highlights your "skunkworks" project during a major public event - that's reassuring that we accomplished something.
Congrats to
@go_containerlab
founders
@WHenderickx
/
@Karimtw_
and our contributors.
Staying open and multivendor we are off to a next chapter.
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We expect to have 50+ Containerlab workshop attendees at Autocon1 next month.
With a crowd that big, there is no way, everyone is going to see clearly what happens on the screen. So I decided to pull a little trick that should work perfectly 🤞
Besides having a normal slide
4
4
56
🚀 Two days of review but finally it is out.
Meet the new blog post we put together.
Exposing Kubernetes Services to SR Linux-based IP Fabric with Anycast Gateway and MetalLB
The idea of this post was born out of a PoC my colleague Michel Redondo did a
3
13
55
There are two types of network engineers.
Those who do atomic changes, bathing in atomicity and transactionality of every commit.
And those who do a full config-replace via gNMI 💣
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It took us some IETF-years to roll it out, but Nokia SR OS docs are now available in HTML format, which looks decent.
4
10
54
If you are looking for a sports career and have a lot of rage against the servers (and strength) there is a world servers throwing championship
@cloudfest
This year 9.40m is the winning result 😅
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Started with gNMI and Protobufs and ended up being here 😶.
Let's design it together, then.
3
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54
We are building some interesting Streaming Telemetry project for SR Linux and SR OS, and here is SR Linux with full v4/6 internet table sourced by DE-CIX.
The project will be made public soon and will demonstrate Streaming Telemetry insights in the peering context.
1
8
53
Recently
@carlrmontanari
opened his Boxen project.
This is a CLI tool that packages VM-based NOSes into container format.
It is still in beta, but if you're curious to see how it integrates with
@go_containerlab
you are most welcome to check it out
7
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I once wrote to our VP of Hardware asking how much more costly it would be to paint the switches in punk pink.
He never replied to this email.
PS> I was sober when I hit Send.
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We continue to slap yang tooling (or a lack of thereof), and my job is to ease this pain a bit
Here is a yanglint/yanglib container image that you can use in your workflows/CIs to
1 check if the YANG schema is valid
2 check if the modeled data (xml/json) conforms to the schema
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We will feature our open-source work at Network Field Day 33 in about a month.
If anyone had told me 5 years ago that we, as Nokia, would have three slots devoted to our OSS projects at
#NFD33
, I would have submitted them for medical examination.
But hey, this is a testament
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The guy in the beanie who visited Amsterdam today brought you scrapli, scrapligo, scrapli-netconf, scrapli-cfg, which are widely used by many big players to do CLI and netconf based automation with Py and Go
Thanks for stopping by
@carlrmontanari
, it was my pleasure
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The Autocon1 workshop infra is almost done.
70 VMs each with 8vCPU and 32G RAM will wait our attendees to dive deep into the containerlab waters.
600 vCPU cores and 2+TB RAM just for you to enjoy it with us and lab away 🦸♂️
1
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You know this feeling when people say "certificates" and you think x509, but they meant SSH certificates.
Like one set of certificates wasn't painful enough to master.
Master? Who am I kidding?
2
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52
Also got covid and at those powerless grim days I got this nice father's day gift from my son.
Look at the bottom -
@go_containerlab
😂
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Getting myself out of the comfort text-zone to a video genre
Releasing the first episode of the NetRel show in 4-5 hours.
30 minutes of pure gNMI and Wireshark
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YANG is not easy. As long as you drift away from a 10 lines example you immediately feel that.
8
6
50
Do you remember how we threw in a controversial blog post saying that MC-LAG is dead, long live EVPN Mutlihoming?
Here it is
And quite a few were new to the concept of EVPN-MH. So my colleague Alperen created a full-blown tutorial that covers how EVPN
My "classic" networking skills keep deteriorating to a point when I don't keep my hand on the pulse of the routing WG.
But one thing is quite fascinating. A shift from MC-LAG to EVPN-MH for multihomed servers in datacenters. People are still scared of EVPN-MH, it seems. Are you?
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2
7
51
🌟Alright networking people, the X is out of the bag!
We
@nokianetworks
are announcing our new custom-built FP5cx chip tailored for IP access and WAN aggregation along with a brand new lineup of 7730 SXR router family hitting the market next year.
Moreover, with that, we
2
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51
I am excited to share the news that the upcoming
@nanog
84 hackathon theme is "Giving back to Open Source"!
On top of that,
@go_containerlab
and gNMIc have been selected to be one of these Open Source tools that the community will have a chance to hack on 🤯
1
12
51
This (may be the best) free book on Segment Routing by my colleague Colin Bookham just hot updated to v1.4
SRv6 uSID, SRv6 examples for 7250IXR and some more.
Not all heroes wear ~~capes~~ twitter handles. My colleague Colin released a free e-book "Implementing Segment Routing with SR OS" which is available for download
Colin is an exceptional writer, do skim through the book even if you're not into SR OS.
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4
12
49
Alright, yesterday
@nanog
published the talks from the NANOG83 event where
@Karimtw_
and I showcased
@go_containerlab
and I let me provide you with some time codes as it is not possible to do on Youtube
1
7
50
Hey all,
as you know,
@go_containerlab
labs belong to Git, and GitHub is the most popular service for hosting public projects.
You all did a great job by creating labs, publishing them and showing what's possible. Thank you 🙏
Now, we wanted to make your labs easily
1
9
47
Going to try myself for a FAANG interview this year. The loosely set deadline I set for myself is Sept/Oct timeframe.
Surprisingly enough, I will likely aim high and go for an SWE position, but with a networking twist.
In the light of openness, I will share here my progress
10
0
48
Past 12 months have been intense on travel and speaking, but I gathered enough collectibles for my parents.
Closing this year with another long haul to Singapore in a month 🎉
3
0
48
I finally sat for an hour and documented the process I use to create beautiful and rich documentation for our OSS projects (like )
Read how I do this fully automated, with custom domain, TLS certificates and $0 running costs -
3
2
47
Sir
@Erwan12
took the grafana' flowchart plugin for quite a serious spin.
Mixing gNMI streaming telemetry
* with a real traffic generator
* multihomed EVPN fabric
* with load balancing over LAGs
* amplified by CLOS ECMPs
is a way to a customer' heart for sure
2
10
48
This is only possible with our contributors, long time maintainers and a growing user base.
Containerlab is a small tool, but the amount of work that went into making it successful was not proportional to its size.
I am curious to see what lies ahead.
🥳Thank you, Aleksei from
@googlecloud
, for nominating us and
@GoogleOSS
, for supporting OSS projects.
We at Containerlab have always believed in the power of open source and loved every inch of this journey.
To all contributors, maintainers, and users - you are the force 💪
0
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2
1
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Apparently
@robshakir
in 2019 B.C. (before COVID) delivered a very interesting talk on Streaming Telemetry and design decisions behind gNMI.
To date I haven't seen anything like that, very interesting read to reinforce your gNMI vs SNMP pitches
2
9
48
The way I do my ansible
✅ hermetic reproducibility, same ansible version all the time
✅ zero install harassment. No deps hell
✅ OS agnostic, ~whenever I want to run - it runs
✅ Easy ansible version switch. Change a tag string and you're off
And yes, I am building/maintaining
3
1
47
Son, you are staring at the best SP border router. Thanks to
@nokianetworks
Family day intiative.
3
6
46
You guys went ballistic about the Wireshark integration with
@go_containerlab
.
But yesterday, it was me going 👀🤯 when I learned about the open-source project that delivers a Web UI for packet captures -- Edgeshark.
Here are 12 minutes to blow your mind.
4
9
47
No-bullshit* open source policy is what I love about my employer.
Open-source network automation is a baller and makes me happy.
* some legal mines you have to tip-toe around 🤫
** before 2019 I used gitlab
3
3
46
Making YANG a first-class citizen in our routers made wonders to MD-CLI.
Check out how cool is that to show a user the YANG path for the current context.
Or an XPATH string that you can immediately put into your gNMI subscription path.
A great aid for netengs.
2
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46
This is now my preferred way of distributing/launching virtualized routers
3
3
45
SRLinux CLI with auto-suggestions based on YANG model is so satisfying
4
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💻 Hey networkers!
We know what turns you on!
☯️ Open source tools that help you in the uphill battle with YANG.
🚀 And we have a new tool for you, please meet "yangpath" - a YANG path exporter with superpowers
🌐
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