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Dr. Z's Podcasts · July 9 · 26 min

Network+ - Domain 02 - Network Implementation

Category: Network+ (S121) This podcast traces network implementation from hardware foundations to cloud-scale virtualization. It begins at the physical layer with structured copper (Cat5e to Cat8) and fiber cabling terminating at distribution panels. Locally, Layer 2 Ethernet switches forward frames using MAC addresses, segmented logically into Virtual LANs (VLANs) and trunked via 802.1Q to isolate broadcast domains. Subnet communications are enabled by Layer 3 routers using static and dynamic routing. In virtualized environments, virtual switches connect virtual machines, while Virtual Extensible LANs (VXLAN) perform Layer 2 encapsulation inside Layer 3 UDP packets to stretch networks across boundaries. Finally, Software-Defined Networking (SDN) and SD-WAN leverage controllers and APIs to orchestrate dynamic, transport-agnostic logical overlays. -Dr. Z

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Category: Network+ (S121)

This podcast traces network implementation from hardware foundations to cloud-scale virtualization. It begins at the physical layer with structured copper (Cat5e to Cat8) and fiber cabling terminating at distribution panels. Locally, Layer 2 Ethernet switches forward frames using MAC addresses, segmented logically into Virtual LANs (VLANs) and trunked via 802.1Q to isolate broadcast domains. Subnet communications are enabled by Layer 3 routers using static and dynamic routing.

In virtualized environments, virtual switches connect virtual machines, while Virtual Extensible LANs (VXLAN) perform Layer 2 encapsulation inside Layer 3 UDP packets to stretch networks across boundaries. Finally, Software-Defined Networking (SDN) and SD-WAN leverage controllers and APIs to orchestrate dynamic, transport-agnostic logical overlays. -Dr. Z

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