All articles
ITOM2025.05.20 · 5 min read

Identifying the Root Cause of a Cascading Failure

347 alerts fire in under 2 minutes. Every team blames a different layer. ITOM finds the real answer in 90 seconds.

Use Case 02

2:34 PM: 347 alerts fire across 5 application tiers simultaneously. Load balancers, web servers, app servers, cache, DB replicas — all showing failures.

What's Actually Happening (Without ITOM)

A single 10GbE switch (SW-CORE-03) hit a firmware bug causing packet loss above 1,000 concurrent flows. Every downstream layer showed symptoms — but each monitoring tool only watches its own layer.

What ITOM Does — Step by Step

  1. Event Management ingests all 347 alerts within seconds
  2. Topology correlation maps every affected component to its upstream network dependencies
  3. Identifies SW-CORE-03 as the shared upstream ancestor of 94% of active alerts
  4. Collapses 347 alerts into a single root-cause incident with full business impact analysis

ITOM Alert Output

> ITOM Alert: ROOT CAUSE IDENTIFIED
> Component: SW-CORE-03 — packet loss 23%
> Correlated alerts: 347 (collapsed to 1)
> Affected services: Payment Processing, Auth, Orders
> Time to root cause: 90 seconds

Without ITOM vs. With ITOM

Without ITOM: 45+ minutes to identify root cause. War room chaos. Teams blaming each other.

With ITOM: Network team engaged in 4 minutes. MTTR under 12 minutes.

Key Metrics

  • 347 — Alerts collapsed to 1
  • 90s — Time to root cause
  • 4 min — Team engaged
  • 12 min — MTTR

//MORE ARTICLES