N Is For Networking

In this discussion, hosts dive into the value of certifications in the networking field. They explore whether certifications truly aid in landing jobs and their real-world applicability. Hands-on experience is emphasized as vital, with lab work encouraged to deepen understanding. The differing perspectives on certification levels and their employer perceptions are analyzed. They also touch on financing options for certifications and the challenges of remote testing, ultimately reinforcing the need for a balance between certs and practical experience.

In today’s episode, we continue the discussion about routing and routing protocols by focusing on commonalities rather than differences among  protocols such as OSPF, RIP, EIGRP, or BGP. We explain how, in general, routing protocols discover each other, communicate, maintain relationships, and exchange routing information. Next, we explore the topics of selecting best paths in... Read more »

Ready for more routing and routing protocols? Today we discuss the roles of the network operating system (NOS), routing protocols, the Routing Information Base (RIB), and the Forwarding Information Base (FIB). We also include the dynamics of routing protocols, the importance of hardware like TCAM for performance, and the concept of administrative distance or route... Read more »

Dive into the essentials of layer 3 routing and unlock the mysteries of routers and routing tables. Explore the evolution of IP and the hurdles of new technologies. Learn how routers direct packets and the vital role subnetting plays. Discover the differences between static and default routes, plus the power of dynamic protocols like BGP and OSPF. Engage with practical Wireshark exercises and unravel the connections between packets and frames for a deeper networking understanding.

The line between switches and routers can get a little blurry. On today’s N Is For Networking, we try to clear things up. We start by defining what a router and switch are, and then provide some historical and technical context to better understand the differences. Then we discuss how modern switches have evolved to... Read more »

Delve into the fascinating world of spanning tree protocols as versions like 802.1D, 802.1w, and 802.1s are explored. Learn about the critical importance of BPDU guard in preventing network loops. The discussion covers the impact of switch port states on DHCP functionality and the significance of edge ports for maintaining connectivity. With insights into network design and stability, the conversation wraps up by highlighting modern technologies that enhance network efficiency. Join the journey of collaborative learning and skill development in networking!

Dive into the complexities of the Spanning Tree Protocol and learn about the crucial role of root bridges and tiebreakers. Discover how network stability hinges on understanding port types like root, designated, and edge ports. Tune in for insights on managing topology changes and their impact on network performance. The lively discussion includes the dynamics of Bridge Protocol Data Units and the significance of proactive management during disruptions. Get ready for a captivating exploration of networking essentials!

Dive into the mysterious world of spanning tree as fundamental concepts are unpacked. Discover how this protocol prevents loop problems in Ethernet networks. Learn about the critical differences between unicast, multicast, and broadcast transmissions, along with their implications. The discussion delves into the architecture of network switches, showcasing the roles of various components in fast data transfer. Plus, hear a personal story about the chaos caused by broadcast storms and how modern networking techniques tackle these challenges.

Russ White, a network architect and author known for his expertise in network models, joins the discussion to unpack the significance of frameworks like OSI. He explains how these models enhance engineers' problem-solving capabilities. The conversation shifts to the RINA model, challenging the relevance of traditional models in modern networking. White also emphasizes the importance of learning from failures, sharing insightful anecdotes about growth through challenges. Ultimately, he champions personalized approaches to network modeling.

In today’s episode, we address listener Kieren’s question about the differences between LAG, MLAG, MC-LAG, and stacking. We tackle the nuances of Link Aggregation (LAG) and the Link Aggregation Control Protocol (LACP), and explain their roles in redundancy and bandwidth efficiency. We also discuss the complexities and differences among vendors and overall benefits of Multi-Chassis... Read more »