Christian Giese
Christian is a BNG protocol developer and Professional Services Engineer at RtBrick, with a focus on PPPoE/L2TP, DHCP, RADIUS, and related access technologies. He began his career at Deutsche Telekom AG in the Access/BNG domain and later worked at Juniper Networks.
Christian is a strong advocate for open-source software and the author of several widely used projects, including the BNG Blaster, Python libraries like PyRAD and PyANCP, or the Juniper JetEZ SDK. He is also an active member of the DENOG community, regularly contributing insights and tools to support the broader networking ecosystem.
Beiträge
The new working group aims to create a dedicated forum for the exchange and development of solutions relating to national challenges in the field of Internet Service Providers (ISPs) and access infrastructures in Germany. Our mission is to fill the gap between the Routing WG and all the other essential topics involved in running an ISP in Germany.
The aim is to create a forum where internet service providers, vendors, and other interested parties can come together to discuss these topics and collaboratively develop an ISP handbook.
Whether you’re an expert, a tech enthusiast, a legal mind, or simply interested, you’re welcome to join our young and open working group.
Topics such as routing or peering are dealt with in the sister group, the Routing WG. Both groups work together where there may be areas of overlap.
Key Topics:
* Access Technologies like xDSL, PON, AON, and how to build access networks
* BNG-related stuff
* Added value services like Telephony or IPTV
* L2BSA / L3BSA
* IT-systems need to run your network (RADIUS, DHCP, Logging, Provisioning, ...)
* Auto Configuration (ACS) and CPE Management
* Regulatory Requirements in Germany (TKG, LI, VDS,...)
* Create reference configurations
As all these topics are mainly related to local regularities in Germany, the meetup's primary language will be German.
Is PPPoE really legacy? Is IPoE really better? And what actually happens when something breaks?
This talk takes a hands-on look at PPPoE and IPoE (DHCPv4/v6) in real ISP environments, based on actual deployments, not just specs. We’ll walk through the key operational differences that show up when things get serious: high availability, failover, MTU handling, multicast, and how dual-stack plays out in practice.
We’ll also dive into the hidden pain points, like why hardware offloading fails in unexpected places, why VLAN models (N:1 vs 1:1) must be considered here, and how session state behaves when routers crash or links go dark.
There’s no silver bullet, but you’ll leave this session with a clear picture of the trade-offs. Whether operating PPPoE or IPoE, or stuck managing both, this talk gives you the good, the bad, and the “we didn’t see that one coming”.
If you’ve ever had to troubleshoot weird subscriber issues at 2 AM or explain to management why “it’s complicated”, this talk is for you.