NetLdn #33 – 14/07/2022

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

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

RSVP (Free): Eventbrite


Talk 1: DWDM for Optical Noobs

A entry level guide through what DWDM is, why it’s necessary, and how and where it is applied in networks

Presenter: Mario Nunes (City Fibre)


Talk 2: BGP Flow Spec for DDoS mitigation

Tricks and technical details about using BGP Flow Spec for DDoS mitigation

Presenter: Pavel Odintsov (@odintsov_pavel)


After Talks: Networking for Networkers

Stay around after the talks for a social hour.

NetLdn #32 – 09/06/2022

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

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

RSVP (Free): Eventbrite


Talk 1: Reducing The Impact of IPv6 Flash Renumbering Events

Providing fixed, static IPv6 prefixes is not always a viable option for ISPs, but dynamic prefixes can also introduce problems. The IETF has recently published, and is still working on, several documents to help mitigate the impact of what’s referred to as an IPv6 “Flash renumbering event”.

Presenter: Richard Patterson (@RichPatz)


Talk 2: TBD

TBD

Presenter: TBD


After Talks: Networking for Networkers

Stay around after the talks for a social hour.

NetLdn #31 – 12/05/2022

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

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

RSVP (Free): Eventbrite


Talk 1: Prometheus for network user experience (and not only) monitoring

Quite a few times I’ve had to deal with requests stating that there is a network problem in a remote branch location, preventing office employees from doing their job, whereas monitoring systems were showing literally nothing unusual. In order to solve the problem I have built a monitoring system leveraging Prometheus to show user experience, which started my journey to start building my own exporters. I would like to share my experience to show network engineers where Prometheus could be helpful, what the challenges are, and how to overcome them.

Presenter: Anton Karneliuk (@AntonKarneliuk)


Talk 2: BGPsec in the context of routing system security

BGPsec enjoys global world domination. Or does it? No, it does not. At least not yet. Therefore this needs to be addressed.

BGPsec has been around in theory and on paper for a while. Not in practice and deployments, though. Some production scale and quality experimentation with BGPsec has revealed quite a number of incorrect design time assumptions, outright wrong decisions made, lack of community understanding of how it could and should be used, and how can it fit into the overall routing security framework. One of the open gaps is the unawareness of the community, primarily operations community, of how BGPsec functions and how it should be deployed.

This talk covers three main areas:

– BGPsec the protocol, covering the protocol mechanics itself and how it operates on the BGP signaling level;
– Infrastructure required for BGPsec operation, covering aspects of providing and distributing supporting informational elements into BGPsec system – integration with RPKI machinery, what is required from the perspective of registries and certificate authorities, what are the scalability properties expected from the RPKI side, and practical aspects of how existing origin and path validation tooling would need to be extended to cover BGPsec too;
– BGPsec in the context of the overall routing security, and how it would match or interwork with the current understanding of routing security as realized by origin and path validation, with specific scenarios of what it would take to deploy BGPsec from the perspective of edge node, transit operator, an IX, and a CSP.

Presenter: Ignas Bagdonas


After Talks: Networking for Networkers

Stay around after the talks for a social hour.

NetLdn #30 – 14/04/2022

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

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

RSVP (Free): Eventbrite


Talk 1: Lnetd-NM Open-source Network Model

Lnetd-NM is an open-source software design to simulate traffic behaviour, link and node failure in an MPLS network. It enables analysing single points of failure and provide the tools needed to better design around failures or capacity constraints.

Presenter: Catalin Petrescu (@CPETRESCU)


Talk 2: 3 Years of NetLdn

On NetLdn’s 3rd birthday, Bill and Ian present a quick look back on 3 years of talks from the very first event in Netflix’s London HQ, to the dark Zoom-based pandemic months, and back to in person events again.

Presenter: Bill Hulley and Ian Dickinson


After Talks: Networking for Networkers

Stay around after the talks for a social hour.

NetLdn #29 – 10/03/2022

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

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

RSVP (Free): Eventbrite


Talk 1: Anchoring networking in cryptography: what’s next?

Job Snijders, hacker @ Fastly & OpenBSD, figurehead at PeeringDB & Ripe NCC, allround routing security badass – will share with us his perspective on how cryptography is becoming more and more intertwined with the Internet’s global routing system.

Presenter: Job SniJders


Talk 2: bgp.tools – how hard can it be

Want to know what makes sites like bgp.he.net or bgp.tools tick? or why they seem inaccurate at times? How does AS Rank even work? and why the
speaker spends seemingly unlimited amounts of his time staring at whois? Then this is the talk for you!

Presenter: Ben Cartwright-Cox


After Talks: Networking for Networkers

Stay around after the talks for a social hour.

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: Łukasz 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.