Line-Side Managed Access with VLAN/QoS
Line-side managed switches isolate PLC/HMI/scanners/PCs with QoS for control and takt traffic.
1. Scenario
Smart lines fuse IT/OT—without isolation, broadcast/malware hit takt time.
2. Challenges
Multi-protocol; rogue laptops; ring needs.
3. Architecture
Line-side 8GE+2/4SFP managed; VLANs for PLC/vision/stations; fiber to shop aggregation.
4. Recommended Leagrid LGS2000 products
- LGS2000-8GE2GF-M: Managed Gigabit industrial switch: 8×GE copper + 2×GE SFP; VLAN/QoS/ring redundancy for intersection and shop-floor aggregation.
- LGS2000-8GE4GF-M: Managed Gigabit switch: 8×GE copper + 4×GE SFP for multi-direction fiber rings and multi-camera uplinks.
5. Deployment notes
Isolate station vs process VLANs; 802.1X/port security per plant standard; changes via MES/tickets.