Synopsis # This chapter presents practical patterns for scaling Layer-2 and Layer-3 design on OpenBSD: VLAN planning with vlan(4) , routed access (SVI-style interfaces) using ifconfig(8) and hostname.if(5) , first-hop redundancy with carp(4) , and anycast service placement (static ECMP or BGP-based; see OpenBGPD). Use these patterns to bound failure domains, simplify operations, and provide deterministic paths for clients and services. Design Considerations # VLAN strategy. Allocate one VLAN ...
