LANWANTechnologien

LANWANTechnologien is a term used in German-speaking contexts to describe the technologies and practices involved in connecting local area networks (LANs) and wide area networks (WANs). It encompasses network design, deployment, operation, security, and management for environments such as offices, campuses, data centers, and multi-site deployments, with emphasis on reliability, performance, and scalability.

Core technologies include Ethernet-based LAN fabrics, switches, routers, wireless access, and security appliances such as firewalls and VPN gateways. WAN transport options range from leased lines and MPLS to broadband Internet and modern SD-WAN overlays. Increasingly, LANWANTechnologien rely on software-defined networking (SDN) and network functions virtualization (NFV) to separate control and data planes and to automate provisioning and policy enforcement.

Architectural practices cover hierarchical designs (core, distribution, access), data center fabrics, campus networks, and branch connectivity, with routing, quality of service, IP addressing, VLANs, and segmentation. Security is a central concern, addressed through firewalls, intrusion detection, VPNs, and zero-trust approaches.

Standards and interoperability are supported by IEEE standards (e.g., 802.3 Ethernet, 802.11 Wi‑Fi), the IETF TCP/IP suite, IPv4/IPv6, and routing protocols such as OSPF and BGP, along with management frameworks (SNMP, NetFlow/IPFIX) and northbound APIs for orchestration.

Trends include higher-speed Ethernet (25/40/100/400 Gb/s), Wi‑Fi 6/7, SD-WAN and cloud-focused connectivity, edge computing, and increased automation through intent-based networking.