Virtueel LAN in industrie (VLAN) is een begrip binnen de industriële digitalisering en extra industrie & security topics.
Definitie
Virtueel LAN in industrie (VLAN) is een netwerktechnologie die logische scheiding van netwerkverkeer mogelijk maakt binnen een fysieke netwerkinfrastructuur. In industriële omgevingen wordt het gebruikt voor netwerksegmentatie, security isolation en traffic management tussen verschillende productiesystemen, afdelingen en functionele gebieden.
Kenmerken
- Logical network separation: Segmentatie zonder fysieke netwerkscheiding
- VLAN tagging: IEEE 802.1Q protocol voor packet identification
- Traffic isolation: Prevention van inter-VLAN communication zonder routing
- Broadcast domain control: Reduced broadcast storms door segmentatie
- Priority handling: QoS (Quality of Service) per VLAN basis
- Centralized management: Switch-based configuration en monitoring
- Scalable architecture: Easy addition van nieuwe VLANs voor expansion
- Security enhancement: Access control en firewall integration
Toepassing
Industrial network segmentation:
- Production VLAN: Manufacturing equipment, MES, control systems
- Office VLAN: Administrative systems, ERP, business applications
- Guest VLAN: Visitor access, temporary connections, contractor equipment
- Management VLAN: Network infrastructure management, switches, access points
Metaalindustrie VLANs:
- CNC machine VLAN: CNC controllers, programming stations, DNC systems
- Welding robot VLAN: Robotic welding systems, programming tools, safety systems
- Quality VLAN: SPC systems, inspection equipment, quality tools
- Maintenance VLAN: CMMS, diagnostic tools, service equipment
Security implementation:
- DMZ VLAN: Demilitarized zone voor external connectivity
- Critical systems VLAN: Safety systems, emergency controls, fire suppression
- IoT devices VLAN: Connected sensors, monitoring equipment
- Printer VLAN: Network printers, document systems, scanning equipment
Traffic prioritization:
- Real-time control: Highest priority voor safety en control systems
- Production data: Medium priority voor manufacturing data
- Business traffic: Standard priority voor administrative systems
- Guest traffic: Lowest priority voor visitor/contractor access
VLAN management:
- Dynamic VLAN: Automatic VLAN assignment op basis van device authentication
- Voice VLAN: Separate network voor VoIP systems
- Storage VLAN: Dedicated network voor data backup en storage
- Monitoring VLAN: Network monitoring, security tools, logging systems
Integration met industrial protocols:
- Ethernet/IP: VLAN support voor Allen-Bradley systems
- PROFINET: Siemens industrial ethernet met VLAN capabilities
- Modbus TCP: VLAN implementation voor Schneider Electric systems
- OPC UA: Secure communication across VLANs
Gerelateerde begrippen
Verwante termen:
- Netwerksegmentatie - Security strategy using VLANs as implementation
- Industrial firewalls - Security appliances controlling inter-VLAN traffic
- Cybersecurity - Overall security framework including VLAN security
- Industrial Ethernet - Physical network infrastructure supporting VLANs
Verwante concepten:
- Zero trust - Security model enhanced door VLAN segmentation
- SDN - Advanced networking including dynamic VLAN management
- QoS - Traffic prioritization across VLANs
- IoT - Connected devices requiring VLAN isolation
Bronnen
- IEEE 802.1Q - VLAN tagging standard specification
- Cisco Industrial Networking - VLAN implementation guides
- Rockwell Automation - EtherNet/IP VLAN best practices
- Siemens Industrial Communication - PROFINET VLAN configuration
- NIST Cybersecurity Framework - Network segmentation using VLANs
- ISA/IEC 62443 - Industrial automation security standards
- Moxa Industrial Networking - VLAN configuration voor industrial switches
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