Uploaded April 2026 | Updated September 2026, 2 weeks ago
Lenny Giuliano, Sr. Distinguished Systems Engineer at HPE Juniper Networks, joins Holly and Ethan for another round of multicast. Part two helps fill in details not covered in episode 50. They cover how multicast traffic also affects Ethernet frame addressing, and the key differences between IPv4 and IPv6 multicast. They also explain new hybrid multicast technologies such as AMT and TreeDN, whether multicast is as difficult as it seems, and more.
AdSpot Sponsor: Statseeker
Statseeker gives engineers near real-time performance insights, fast zero-touch deployment, and historical data going back as far as you need; so you can troubleshoot faster and prove what actually happened. Statseeker auto-discovers devices and starts polling every 60 seconds right out of the gate, building a full-fidelity, granular history of your network from the moment it’s deployed. Try it free at statseeker.com/networking.
Links:
Lenny Giuliano on LinkedIn - linkedin.com/in/lenny-giuliano-4341a992
TreeDN: The Fix for Catastrophically Successful Live Streaming Events - community.juniper.net/blogs/lenny/2025/08/21/introduction-to-treedn
RFC9706: TreeDN: Tree-based CDNs for Live Streaming to Mass Audiences - datatracker.ietf.org/doc/rfc9706
NANOG90 Talk: TreeDN - youtube.com/watch?v=wRUwsvept-8
TechCrunch: Has SDN improved or just Kardashianized your network? - techcrunch.com/2016/10/17/has-sdn-improved-or-just-kardashianized-your-network
TechCrunch: NFV and the Tebow thing - techcrunch.com/2016/10/28/nfv-and-the-tebow-thing
Forbes: What Airlines, The Mafia And The Law Of Unintended Consequences Can Teach Us About Net Neutrality - forbes.com/sites/danielfisher/2014/03/07/what-airlines-the-mafia-and-the-law-of-unintended-consequences-can-teach-us-about-net-neutrality
Interdomain Multicast Routing: Practical Juniper Networks and Cisco Systems Solutions: Practical Juniper Networks and Cisco Systems Solutions by Brian M. Edwards - amazon.com/Interdomain-Multicast-Routing-Practical-Solutions/dp/0201746123
N4N050: Multicast Fundamentals - packetpushers.net/podcasts/n-is-for-networking/n4n050-multicast-fundamentals
N Is For Networking is part of the Packet Pushers network. Visit our website to find more great networking and technology podcasts, along with tutorial videos, the Human Infrastructure newsletter, and loads more resources for building your IT career. packetpushers.net
Lenny Giuliano, Sr. Distinguished Systems Engineer at HPE Juniper Networks, joins Holly and Ethan for another round of multicast. Part two helps fill in details not covered in episode 50. They cover how multicast traffic also affects Ethernet frame addressing, and the key differences between IPv4 and IPv6 multicast. They also explain new hybrid multicast technologies such as AMT and TreeDN, whether multicast is as difficult as it seems, and more.
AdSpot Sponsor: Statseeker
Statseeker gives engineers near real-time performance insights, fast zero-touch deployment, and historical data going back as far as you need; so you can troubleshoot faster and prove what actually happened. Statseeker auto-discovers devices and starts polling every 60 seconds right out of the gate, building a full-fidelity, granular history of your network from the moment it’s deployed. Try it free at statseeker.com/networking.
Links:
Lenny Giuliano on LinkedIn - linkedin.com/in/lenny-giuliano-4341a992
TreeDN: The Fix for Catastrophically Successful Live Streaming Events - community.juniper.net/blogs/lenny/2025/08/21/introduction-to-treedn
RFC9706: TreeDN: Tree-based CDNs for Live Streaming to Mass Audiences - datatracker.ietf.org/doc/rfc9706
NANOG90 Talk: TreeDN - youtube.com/watch?v=wRUwsvept-8
TechCrunch: Has SDN improved or just Kardashianized your network? - techcrunch.com/2016/10/17/has-sdn-improved-or-just-kardashianized-your-network
TechCrunch: NFV and the Tebow thing - techcrunch.com/2016/10/28/nfv-and-the-tebow-thing
Forbes: What Airlines, The Mafia And The Law Of Unintended Consequences Can Teach Us About Net Neutrality - forbes.com/sites/danielfisher/2014/03/07/what-airlines-the-mafia-and-the-law-of-unintended-consequences-can-teach-us-about-net-neutrality
Interdomain Multicast Routing: Practical Juniper Networks and Cisco Systems Solutions: Practical Juniper Networks and Cisco Systems Solutions by Brian M. Edwards - amazon.com/Interdomain-Multicast-Routing-Practical-Solutions/dp/0201746123
N4N050: Multicast Fundamentals - packetpushers.net/podcasts/n-is-for-networking/n4n050-multicast-fundamentals
N Is For Networking is part of the Packet Pushers network. Visit our website to find more great networking and technology podcasts, along with tutorial videos, the Human Infrastructure newsletter, and loads more resources for building your IT career. packetpushers.net
