N Is For Networking

N4N041: Switched Virtual Interface (SVI) and Integrated Routing and Bridging (IRB)

N Is For Networking

Show Notes

If you’ve ever wondered what the difference is between a Switched Virtual Interface (SVI) and Integrated Routing and Bridging (IRB), today’s show is for you! Ethan Banks and Holly Metlitzky start with some history and the basics of communication between layer 2 and layer 3 and then explain how the concepts of SVI and IRB... Read more »

More from N Is For Networking

Oct 22, 2026

Thanks to a listener request, today’s episode talks about how to optimize your home network for gaming. Ethan and Holly discuss key factors such as latency, connection type, and bandwidth congestion as well as how wired connections, server selection, and active queue management can directly impact responsiveness. Episode Links: Watch this episode on YouTube

Oct 15, 2026

Ethan and Holly are back to walk us through Access Lists. Access Lists regularly appear in networking device configurations and aren’t just for security. Ethan and Holly break down what an access list is, how an access-list is processed, the various ways we might use an access list, and more. AdSpot Sponsor: Meter Most IT... Read more »

Oct 1, 2026

Thank you for sending in even more follow ups! On today’s show, Holly and Ethan respond to listener comments and corrections on Multicast, MPLS, NAC, Twisted Pair Cabling, and more. A big thank you to everyone who sent in responses. If you’d like to leave a comment about this comments episode, you can do so... Read more »

Sep 17, 2026

Border Gateway Protocol (BGP), the routing protocol of the global internet, is finding uses in all sorts of places in 2026 beyond internet routing. It’s a huge topic. Large books have been written about BGP and its related technologies, so Ethan and Holly are here with a gentle introduction to BGP. They break down what... Read more »

Sep 3, 2026

Ethan and Holly tackle the Link Layer Discovery Protocol (LLDP). They explain how this protocol helps network engineers map network topologies and validate wiring. They also discuss how LLDP devices use frames to send information, mandatory and optional type length values (TLVs), and why security on edge ports remains critical. Episode Links: Watch this episode... Read more »

See all episodes →