book

Practical Guide to Modern Networking Telemetry

by Avi Freedman, Leon Adato

April 2026

Beginner to intermediate

120 pages

2h 52m

English

O'Reilly Media, Inc.

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Introduction
What IS “the Network,” Exactly?What IS “Network Telemetry,” Exactly?About You (“Is This Book for Me?”)About This Book: What Will I Learn?NOT About This Book: What WON’T I Learn?
1. Network and Telemetry Introduction
What IS Network Telemetry, ReduxSecurity FirstUnderstand Your Network Top to Bottom and End to EndMake Your Cloud Environment Less…Foggy?Anatomy of a NetworkNetwork Routing/Switching PrimitivesTypes of TelemetryWhat About the Four Pillars?Data Mining, Network StyleSNMPSyslogStreaming TelemetryNetFlow and Other Traffic TelemetryAPISynthetic TransactionsConfigurationsChapter Wrap-Up
2. Wrangling Telemetry
TransportInventory of Telemetry Producers and ConsumersSend Direct to Each SystemReplicate to Multiple Network Analytics SystemsOptions to Replicate Telemetry: Separate ReplicatorsObserve the Telemetry FlowEncryptionEnriching TelemetryTypes of EnrichmentBuilding and Managing Enrichment Normalizing TelemetryNormalizing Device MetricsNormalizing Traffic DataNormalizing Performance TelemetryNormalizing LogsData Storage and QueryData Storage, Ingest, and Query RequirementsDatabase OptionsChapter Wrap-Up
3. Intro to Using Telemetry
Guided WorkflowsUnbounded WorkflowUnprompted WorkflowPrioritizingAuto-DeliveryAlertsAI BackgroundAI-Assisted WorkflowAI-Run Observability Workflows (But Under Your Direction)Chapter Wrap-Up Workflo…oops
4. Using Telemetry, Individually
The Forms of DataMetricsTrafficPerformanceRoutingPutting Knowledge to Use (Cases)Use Case 1: Which Locations Am I Having Performance Problems to? (Synthetic/Ping)Use Case 2: Which Transit Providers Are Dropping My Data?Use Case 3: Which Interfaces Are Up, Down, or Saturated?Use Case 4: Why Are Those Interfaces at Capacity?Use Case 5: Do You Know What Your Network Did Last Night?Use Case 6: Cloud Cost (Traffic)Use Case 7: Billing (Metrics)Use Case 8: Failover, Failback, and Just Plain FailingUse Case 9: Portrait of a (Network) CrashChapter Wrap-Up
5. Using Multiple Types of Network Telemetry Together
Use Case 1: When Synthetic Is Better than the Real ThingMetric 1: Packet Errors (Via SNMP)Metric 2: Synthetic Interface Experience (Via Ping)Use Case 1 ½: When Synthetic Is Better than the Real Thing (REDUX)Use Case 2: The Interface Is Saturated? With What, Exactly?Use Case 3: High CPU Was Never the IssueUse Case 4: My Interface Runneth OverUse Case 5: What’s in a (VPC) Name?Use Case 6: The Boy Who Cried “Config Change!”Automating Multimetric Correlation with AIChapter Wrap-Up
6. Using Network Telemetry, Combined with Other Layers
(Meta) Use Case 1: It Doesn’t Work on My MachineUse Case 2: Of Handshakes and HandoffsUse Case 3: When You Don’t Have Authority, Visibility Will DoUse Case 4: Sad TromboneUse Case 5: Unbalanced Application HandlingUse Case 6: When the Network Gets Slap-API and the Age-Old Question: Is the Network the Problem?Another Exhortation to Use AI to Help Reduce MTTIFull Stack Wrap-Up
The Mostly Unnecessary Summary
About the Authors

Content preview from Practical Guide to Modern Networking Telemetry

About the Authors

Avi Freedman and Leon Adato have more than 70 years of experience in the tech industry, with a particular focus on networking, monitoring, and observability. Both recognize that after the hard work of building a solution is done, the hard work of keeping things running starts. And that’s usually where the problems really begin. Their decision to collaborate on this book arose first and foremost to share all the samples, examples, stories, and lessons they’ve picked up along the way, but also to help readers who might need to articulate those same lessons to colleagues, managers, or the odd (very odd) person at a dinner party.

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Practical Guide to Modern Networking Telemetry

by Avi Freedman, Leon Adato

About the Authors

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.