Industrial Port Mirroring: Copy Paths and Capture Limits
Separate production forwarding from mirrored-copy delivery. Check ingress/egress scope, combined copy demand, host drops and timestamp meaning before interpreting a capture.
Low Utilization, Yet Packet Loss: Microbursts, Buffers and Output Queues in Industrial Switches
Explain packet loss at low average utilization using burst arrivals and finite output queues. Check traffic timing, queue allocation and QoS limits with reproducible tests.
Serial Device Servers and TCP Streams: Why Reads Split or Combine Messages
Separate UART characters, server buffering and TCP byte-stream reads. Build a persistent protocol parser and verify split, combined and incomplete messages through recovery.
Industrial Switch VLANs: Access, Trunk, PVID, and 802.1Q Tagging
Learn how access ports, tagged trunks, PVIDs and VLAN membership control forwarding. Check industrial switch VLAN settings with a practical test plan.
Industrial Switch RSTP Rings: BPDUs, Root Election, and Failure Convergence
Understand RSTP root election, port roles and BPDUs. Test ring failures and recovery while checking topology changes and application interruptions.
Industrial PTP Time Synchronization: Messages, Hardware Timestamps, and Acceptance Testing
See how PTP messages and hardware timestamps estimate clock offset and path delay. Check asymmetry, traffic effects and synchronization acceptance tests.
Industrial Ethernet Auto-Negotiation: Speed, Duplex, and Troubleshooting
Understand Ethernet speed and duplex negotiation. Diagnose forced-setting mismatches, marginal cabling and link-up problems using port status and counters.
How to Read SFP DDM Values for Optical Link Troubleshooting
Read SFP temperature, voltage, bias current and optical power. Compare DDM values with module limits and link measurements to isolate optical faults.
How to Configure Industrial Switch Port Mirroring for Packet Troubleshooting
Configure source ports, mirror directions and a monitor port. Check capture bandwidth and timestamps before using mirrored packets to diagnose industrial traffic.
How to Use LFP on an Industrial Fiber Media Converter: Configuration and Disconnection Testing
Configure Link Fault Pass-through and test copper, fiber, remote power and recovery faults. Check the model-specific direction, alarms and restart behavior.
