How Alchemy Network Monitor Detects and Troubleshoots Network Issues
Detection methods
- Active probing: Sends synthetic transactions and pings to measure latency, packet loss, and availability.
- Passive monitoring: Collects telemetry from network devices and traffic flows (SNMP, NetFlow/sFlow/IPFIX) to observe real traffic patterns.
- Agent-based metrics: Lightweight agents on hosts gather OS/network counters, process and service health, and forward metrics.
- Log and event ingestion: Parses syslogs, firewall logs, and device events to surface error patterns and configuration changes.
- Protocol-aware inspection: Understands application protocols (HTTP, DNS, TCP) to detect application-layer failures and degradations.
Triaging & correlation
- Anomaly detection: Uses baselines and thresholds to flag deviations (spikes in latency, drops in throughput).
- Event correlation: Groups related alerts (e.g., link down → routing flaps → service outage) to reduce noise and show causal chains.
- Topology-aware context: Maps devices, links, and services so alerts include affected paths and upstream/downstream dependencies.
- Root-cause inference: Suggests likely causes by combining telemetry, recent config changes, and historical incidents.
Troubleshooting tools & workflows
- Interactive tracing: Path traces and hop-by-hop latency diagrams to pinpoint where latency or packet loss occurs.
- Packet capture & flow drilldown: On-demand packet capture and flow summaries for deep inspection of problematic traffic.
- Command playbooks: Prebuilt diagnostic steps (ping, traceroute, config checks) and automated runbooks to reproduce and fix issues.
- Time-series analysis: Correlates metrics across hosts and devices with zoomable graphs to identify when and how problems began.
- Alerting and escalation: Configurable alerts (severity, suppression, deduplication) and integrated notifications (email, Slack, PagerDuty).
Automation & prevention
- Auto-remediation: Conditional automation (restart service, reroute traffic) for common, low-risk problems.
- Capacity planning: Predictive trends and utilization forecasts to prevent congestion-related incidents.
- Configuration drift detection: Alerts on unexpected config changes that could lead to outages.
- SLA monitoring: Tracks service-level metrics and generates reports to enforce SLAs and identify chronic issues.
Typical troubleshooting playbook (condensed)
- Identify correlated alerts and affected services via the topology map.
- Run an interactive trace to find the problematic segment.
- Inspect recent logs/config changes and time-series graphs for the same timeframe.
- Capture packets or flow records on the suspect link for protocol-level analysis.
- Apply an automated remediation or follow the runbook; escalate if unresolved.
- Post-incident: record root cause, roll back faulty configs, and update alerts/playbooks.
If you want, I can create a one-page runbook tailored to a specific network topology or write example alert rules for typical failures.
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