Netplan: advanced network configuration (tunnels, VLAN, bridges, bonding)

2025-09-18

Introduction

Netplan is a utility for declarative network configuration in Linux (Ubuntu, Debian, and derivatives). It is usually used for simple cases like Ethernet or Wi-Fi, but it can do much more:

• tunnel interfaces (IPIP, GRE, VXLAN, WireGuard),
• VLAN,
• bridges,
• bonding (interface aggregation).

These features allow building complex network topologies — from home VPNs to data centers and cloud environments.

Tunnel interfaces

Tunnels encapsulate packets of one protocol into another. They are used for VPNs, inter-server connections, or network isolation.

066 | Redundancy of Network Links Within a Single Building: Copper, Fiber, and Bonding

2025-07-28

Redundancy of Network Links Within a Single Building: Copper, Fiber, and Bonding

In the previous article, we explained why network link redundancy is not just a luxury but a critical need for ensuring business continuity. Today we’ll focus on the most basic — but no less critical — level: communication between servers and network equipment within a single building, whether it’s a server room, data center, or a regular office.