NetLdn #16 – 11/02/21

Location: Zoom

We will once again be combining powers with our NetMcr friends for a joint meeting. We’ll be starting at the slightly later (by NetLdn standards) time of 1930hrs UTC.

The meeting will be held online using Zoom. The meeting room ID and password will be shared on the day of the event to the mailing list and on Slack.

Please set your real name in the Zoom client before joining the meeting, they will be validated for admission.

Join from 1915hrs onward, talks begin promptly at 1930hrs.

Talk 1: BGP Configuration Automation

Lots of networks are in the process of implementing a network automation stack to manage their configurations. Peering Manager can help such networks keep track of BGP sessions such as transit, IXP or private peering ones.

Presenter: Guillaume Mazoyer

Talk 2: Operating Fixed Line Last Mile Networks

No fixed line network operator in the UK has to deal with the problems that Openreach does. This is a tongue in cheek look at how I learned to appreciate Openreach, and how tough it can be to build and operate a fix line access network.

Presenter: James Bensley

After Talks: Networking for Networkers

Stay in the meeting room and have a free-for-all chit-chat about whatever is on your mind. This is a bring-your-on drinks and nibbles session.

NetLdn #15 – 14/01/21

Location: Zoom

Our first meeting for 2021 will be a combined meeting with our NetMcr friends. As such we’ll be starting at the slightly later time of 1930hrs UTC.

The meeting will be held online using Zoom. The meeting room ID and password will be shared on the day of the event to the mailing list and on Slack.

Please join from 1915hrs onward. 
Talks begin promptly at 1930hrs.

Talk 1: O-RAN

Andy will be speaking to us this time about O-RAN. As an area of mobile radio technology that has the potential to transform the landscape of mobile networks across the world, we’re extremely excited to hear from Andy, particularly given his wealth of hands-on industry experience in this area.

Presenter: Andy Sutton

Talk 2: It is time to replace MD5 with TCP-AO

As many of us will have come to understand over the years, MD5 passwords on eBGP sessions have something of a spotty implementation record. Ron will be introducing the TCP Authentication Option as its replacement, and the state of implementation &  interoperability between two well-known router vendors.

For anyone concerned about routing security, this is sure to be an extremely pertinent presentation. 

Presenter: RON BONICA (Juniper)

After Talks: Networking for Networkers

Stay in the meeting room and have a free-for-all chit-chat about whatever is on your mind. This is a bring-your-on drinks and nibbles session.

NetLdn #14 – 10/12/20

Location: Zoom

The meeting will be held online using Zoom. The meeting room ID and password will be sent out on the day of the event to the mailing list.

Please join from 1845hrs onward. 
Talks begin promptly at 1900hrs.

Talk 1: Playing with (world wide) routing for fun (and profit)

Are you learning for professional networking certificate? Or just playing with your lab? Do you miss having options to use full, real table along with all prefix attributes? Or maybe you have multiple internet links and would like to optimally distribute traffic and don’t know how to do this? During the session I’ll demonstrate the BGP free-for-all project, as well as some practical tips how to achieve better load balancing or routing if you have multiple internet links.

Presenter: Ɓukasz BromirskI (Cisco)

Talk 2: pygnmi : Developing Python module for gNMI

There has been no good Python library to manage the network elements using the gNMI. To overcome this limitation, we’ve decided to create our own. Being non-professional software developers, it is also an interesting learning curve.

As such, the talk will share the status of the pygnmi library development, examples of usage and integration with existing automation frameworks and story of the development

Presenter: Anton Karneliuk (@ANTONKARNELIUK)

After Talks: Networking for Networkers

Stay in the meeting room and have a free-for-all chit-chat about whatever is on your mind. This is a bring-your-on drinks and nibbles session.

NetLdn #13 – 12/11/20

Location:

The meeting will be held online using Zoom. The meeting room ID and password will be sent out on the day of the event.

Please join from 1845hrs onwards. 
Talks begin promptly at 1900hrs.

Talk 1: Why Documentation Matters

As Cloudflare announced 1.1.1.0/24 for its recursive resolver, it means that we also get all the traffic for 1.1.1.1. Not just DNS. In comes documentation. Quite a few vendors (and conference presenters) have been guilty of not using RFC5737.

Presenter: Tom Strickx (Cloudflare)

Talk 2: Network telemetry for DDoS detection purposes

Pavel Odintsov from FastNetMon will talk about challenges with using network telemetry for DDoS detection.

The talk will cover sFlow, Netflow and IPFIX from different vendors, review traffic capture methods available on Linux and briefly discuss VPC flow logs from public clouds.

Presenter: Pavel Odintsov (Fastnetmon)

After Talks: Networking for Networkers

Stay in the meeting room and have a free-for-all chit-chat about whatever is on your mind. This is a bring-your-on drinks and nibbles session.

NetLdn #10 – 09/01/20

Location:

Upstairs @ The Wheatsheaf
25 Rathbone Place
Fitzrovia, W1T 1JB

Arrival from 1830hrs. 
Talks begin promptly at 1900hrs.

RSVP: https://www.meetup.com/NetLdn/events/265838961

Talk 1: On-premise vs Cloud Networking

Ndaba will discuss the direction of networking from on-premise vendors like Cisco, Juniper to Cloud vendors such as Meraki, AWS and Azure

Presenter: Ndaba Ndlovu

Talk 2: IPv6 in the Aviation Industry

Presenter: Andy Gatward (SITA)

NetLdn #8 – 14/11/19

Location:

Upstairs @ The Wheatsheaf
25 Rathbone Place
Fitzrovia, W1T 1JB

Arrival from 1830hrs. 
Talks begin promptly at 1900hrs.

RSVP: https://www.meetup.com/NetLdn/events/265838961/

Talk 1: Introducing RPKI in to a Tier 1 Transit Network

Jorg will explain how Telia Carrier approached improving routing security, alongside MANRs actions, by deploying RPKI validation and the roll out of the rejecting Invalids.

Presenter: Jorg Dekker (Telia Carrier)

Talk 1: net44 – An under-utilised resource or potential fun? (Postponed)

44.0.0.0/8 was allocated in 1992 for amateur radio. Before the rise of the internet hamradio enthusiasts used low 1200bps and 9600bps unlicensed link to form mesh networks. In recent years this has dwindled away, now those left using the resource have IPIP tunnels normally back to California.

In 2015 the net44 rules were relaxed, allowing participants to announce their own subnets with BGP.

I’ll discuss how easy it is to obtain a UK ham radio license and the simple AMPRnet application process to get your own free /24, which could be announced by an ISP or hosting provider such as Vultr/Mythic Beasts etc.

PRESENTER: Nat Morris (@natmorris)

Talk 2: FastNetMon – An Open-source DDoS Detection Engine

In this introduction talk we will cover all key features available in our vendor neutral threshold based DDoS detection solution

Presenter: Pavel Odintsov (@odintsov_pavel)

SLIDES: fastnetmon_project_presentation-netldn-8.pdf

NetLdn #5 – 08/08/19

Location:

Upstairs @ The Wheatsheaf
25 Rathbone Place
Fitzrovia, W1T 1JB

Arrival from 1830hrs. 
Talks begin promptly at 1900hrs.

RSVP: https://www.meetup.com/NetLdn/events/263577675/

Talk 1: The Year of RPKI on the Control-Plane

Ben is a systems engineer in the day, and bad-ideas-blogger on the side. Previously built up the Cloudflare WAF over the last few years (sorry), and wrote some incredibly silly blog posts after he took a break from full time employment.

Presenter: Ben Cartwright-Cox (@benjojo12)

Talk 2: DirectFlow in a Low Latency Exchange

Building a cheap, high throughput, scalable, low-latency load-balancer using Arista’s DirectFlow.

Presenter: Tomas Morales Mendoza (lmax.com)

NetLdn #3 – 13/06/19

Location:

Upstairs @ The Wheatsheaf
25 Rathbone Place
Fitzrovia, W1T 1JB

Arrival from 1830hrs. 
Talks begin promptly at 1900hrs.

RSVP: https://www.meetup.com/NetLdn/events/261453691/


Talk 1: Anycast DNS in the Cloud

The basics of the Infrastructure that runs DNS for .uk (and 35 other TLDs) and then more depth on how we expanded that infrastructure into the cloud to provide a wider coverage.

Presenter: Brett CarR (Nominet)


Talk 2: Balancing on the Edge: Transport Affinity without Network State

This talk presents Faild, a distributed load balancer which runs on commodity hardware and achieves graceful failover without relying on network state, providing a cost-effective and scalable alternative to existing proposals.

PRESENTER: Lorenzo Saino (Fastly)

NetLdn #2 – 09/05/19

Location:

Upstairs @ The Wheatsheaf
25 Rathbone Place
Fitzrovia, W1T 1JB

Arrival from 1830hrs. 
Talks begin promptly at 1900hrs.

RSVP: https://www.meetup.com/NetLdn/events/260665695/

Talk 1: What does a good design look like?

Knowing what a “good” design looks like requires more than just raw technical knowledge. This is a talk about how to create designs that successfully implement a technical solution, with years of stressful anecdotes thrown in.

PRESENTER: James Bensley


Talk 1: Anycast DNS in the Cloud (Rescheduled)

The basics of the Infrastructure that runs DNS for .uk (and 35 other TLDs) and then more depth on how we expanded that infrastructure into the cloud to provide a wider coverage.

Presenter: Brett CarR (Nominet)


Talk 2: Inetd. An IGP network topology acquisition and capacity planning tool built on opensource software.

– ISIS network discovery 
– Automatically generated network maps ( integration with d3js.org )
– What if scenarios for adding new links/nodes , changing links metric.
– SPF algorithm to get shortest-path between two nodes ( integration with https://networkx.github.io/ ). 
– Manually or Netflow traffic demands ( integration with http://pmacct.net )
– Ability to create network maps for external connection

PRESENTER: Catalin Petrescu (@cpetrescu)

NetLdn #1 – 11/04/19

Location:

4th Floor
2 Fitzroy Place
8 Mortimer St
London W1T 3NA

Arrival from 1830hrs.
Talks begin promptly at 1900hrs.

RSVP is essential: https://www.meetup.com/NetLdn/events/259756046/


Talk 1: Why Netflix needs its own CDN

Netflix runs its own CDN (Open Connect) to deliver video to >130 million subscribers around the world.
This talk will focus on the motivations for doing so, some of the unique challenges, and the hows and whys.

Bio: Javed Vohra

Javed is a member of Netflix’s Network Engineering team having joined 5 years ago.
He’s involved in the continued growth, evolution and day to day operation of the Open Connect CDN around the world.
Before Netflix, he spent 8 years in the Network Design team at Sky, having worked on numerous projects, including Core, FTTC and IPv6 rollouts.


Talk 2: That time I accidentally started an ISP

Getting 1Gbit/s to the middle of nowhere can be struggle, but also a lot of fun. Tales of how a small home network got wildly out of hand.

Bio: Nat Morris

Nat has been at Netflix for nearly 4 years and has written many of their network configuration and automation toolsets from the ground up. He works from home on a farm in rural Pembrokeshire. Before Netflix, Nat led the customer engineer team at Cumulus, he also volunteers at a local primary school teaching students to code.