The forensic of network failures. From packet-level Wireshark deep dives and MTR path analysis to real-time telemetry streaming.
Wireshark, TCPDump & Pcap Analysis
Deep-dive into dedicated listing pages for every major networking discipline, optimized for professional reference and architectural planning.
The network never lies. While logs and telemetry provide a high-level view, Packet Forensics with Wireshark reveals the source-of-truth. By analyzing the TCP 3-way handshake, examining retransmission timers (RTO), and uncovering protocol anomalies at the binary level, engineers can pinpoint exact causes of failures.
Standard Traceroute uses ICMP TTL-Exceeded messages to identify the hop-by-hop path across the internet. Analyzing MTR (My Traceroute) reports is required to distinguish between transient ISP jitter and actual packet-loss.
SNMP's polling-based model is insufficient for modern high-scale networks. Streaming Telemetry uses a Push architecture via gRPC to provide real-time visibility into interface stats, CPU performance, and optic levels.
One of the most persistent failure modes is the MTU mismatch. When a large packet hits a hop with a smaller MTU and the DF bit is set, the packet is silently dropped. Master the use of ICMP fragmentation-needed logic to solve these issues.
"An RST flag indicates an immediate, non-graceful termination of a TCP connection, often triggered by firewalls."
"Monitoring TX/RX optical power (dBm) identifies degrading fiber links before they cause a total hardware link-down event."
"Repeated route withdraws and re-advertisements can trigger BGP Damping, causing your prefix to be ignored."
