ThousandEyes Documentation
  • ThousandEyes Documentation
  • What's New
    • Changelog
    • Naming and Navigation Menu Changes - Summary List
  • Product Documentation
    • Getting Started
      • Getting Started with Account Setup
      • Getting Started with Cloud and Enterprise Agents
      • Getting Started with Cloud and Enterprise Agent Tests
      • Getting Started with Endpoint Agents
      • Getting Started with Transactions
      • Getting Started with Dashboards
      • Getting Started with Alerts
      • Getting Started with Internet Insights
      • Getting Started with the ThousandEyes API
      • Getting Started with API Tests
      • Getting Support from ThousandEyes
      • Notification of Upgrades, Maintenance and Outages
      • New User FAQ
      • ThousandEyes Glossary
    • Global Vantage Points
      • Cloud Agents
        • Where Are Cloud Agents Available?
        • Webex Cloud Agents
        • AWS Wavelength Cloud Agents
        • Cloud Agent with Local Problems
      • Enterprise Agents
        • Getting Started
          • Where Can I Get the Account Group Token?
        • Installing
          • Enterprise Agent System Requirements
            • Enterprise Agent Support Lifecycle
          • Appliances
            • How to Set Up the Virtual Appliance
            • Enterprise Agents: Hypervisor Installation
            • Installing Enterprise Agent on VirtualBox
            • Enterprise Agent Deployment Using ThousandEyes Virtual Appliance (Hyper-V)
            • Enterprise Agent Deployment Using ThousandEyes Virtual Appliance (OVA)
            • Custom Virtual Appliances
            • Installing a Physical Appliance
            • Installing an Enterprise Agent on a Raspberry Pi Device
          • Cisco Devices
            • Catalyst Switching
            • Catalyst Routing
            • Nexus Switching
            • Service Routing
            • Meraki MX Appliances
            • Cisco Enterprise NFV Infrastructure Software
            • Installation Methods
              • Installing Enterprise Agents on Cisco Nexus Switches with Application Hosting
              • Installing Enterprise Agents on Cisco Nexus Switches with Guestshell
              • Installing Enterprise Agents on Cisco Routers using SD-WAN Manager Feature Templates
              • Installing Enterprise Agents on Cisco Routers using the SD-WAN Manager ThousandEyes Workflow
              • Installing Enterprise Agents on Cisco Switches with Docker
              • Installing Enterprise Agents on Cisco Routers with Docker
              • Installing Enterprise Agents on Cisco Switches with the DNA Center
          • Linux Packages
            • Enterprise Agent Deployment Using Linux Package Method
            • Installing the Enterprise Agent with BrowserBot on Oracle Linux Server 7
          • Docker Agents
            • Installing Enterprise Agents with Docker
          • Cloud Templates
            • Installing Enterprise Agents with Microsoft Azure
          • Docker Agent Configuration Options
          • Missing Dependencies for Enterprise Agent on Redhat Enterprise Linux RHEL 7 Installation
          • Migrating ThousandEyes Appliance or Package-Based Enterprise Agent to Docker
        • Configuring
          • Password Reset on the Virtual Appliance
          • Configuring rDNS Lookups for Enterprise Agents
          • Connecting to the ThousandEyes Virtual Appliance Using SSH (Mac/Linux)
          • Connecting to the ThousandEyes Virtual Appliance Using SSH (Windows)
          • Static IP Addresses for ThousandEyes Repositories
          • Firewall Configuration for Enterprise Agents
          • Enterprise Agent Port Forwarding
          • Security Policy and Public NTP Servers on Enterprise Agents
          • Secure Access to ThousandEyes Appliances
          • Disabling the Web Server of a Virtual Appliance
          • NAT Traversal for Agent-to-Agent Tests
          • Enterprise Agent on Docker Advanced Networking
        • Managing
          • Cisco Devices
            • Disable, Restart, or Uninstall the Enterprise Agent via DCNM
          • Docker Agents
            • Add/Remove BrowserBot from Existing Docker Enterprise Agents
          • Upgrading Operating Systems for Enterprise Agents
          • Backup and Restore Your Enterprise Agent Configuration
          • Upgrade Ubuntu 20.04 Focal-Based ThousandEyes Appliances
          • Crash Reporting for Enterprise Agents
          • Configuring a Local Mirror of the ThousandEyes Package Repository
          • Resetting an Enterprise Agent
          • Working with Enterprise Agent Clusters
          • Replacing an Enterprise Agent Using the Agent Clustering Method
          • Replacing an Enterprise Agent Using Agent Identity Files
          • Unlocking the ThousandEyes Appliance
          • Uninstalling the Enterprise Agent (Linux Package)
        • Proxy Environments
          • Installing Enterprise Agents in Proxy Environments
          • Configuring an Enterprise Agent to Use a Proxy Server
          • Writing and Testing Proxy Auto-Configuration (PAC) Files
        • Troubleshooting
          • How to Generate Packet Captures
          • Troubleshooting Automatic-Update Problems on Enterprise Agents
          • Troubleshooting Time Synchronization on Enterprise Agents
          • Installing CA Certificates on Enterprise Agents
          • Agent Unable to Trace Path to Destination?
          • BrowserBot Installation Fails on Red Hat or CentOS in Amazon EC2
          • What to Do If te-agent Stops Running Due to a VACUUM Error
        • Enterprise Agents: What Information Do We Collect?
        • What Is BrowserBot?
        • Upgrading to BrowserBot 2
        • Upgrading to BrowserBot 2.6+ (Chromium 97)
        • Enterprise Agent Utilization
        • Network Utilization from Enterprise Agent Test Traffic
        • Enterprise Agent Interface Selection
        • ThousandEyes Product Lifecycle Policy
      • Endpoint Agents
        • Installing
          • System Requirements
          • Download the Endpoint Agent Installer
          • Install the Endpoint Agent
          • Reinstall the Endpoint Agent
          • Install the Endpoint Agent Browser Extension
          • Install Endpoint Agents for Windows via Group Policy
          • Installing Browser Extensions for Windows via Group Policy
          • Guidance for Windows Software Deployment Teams
          • Install Endpoint Agents for macOS using Munki and the Managed Software Center
          • Deploy an MSI package to Intune for Windows Devices
          • Endpoint Agent Installation on Cisco Webex Devices (RoomOS)
          • Endpoint Agent Installation on Cisco Phone Devices (PhoneOS)
          • Uninstall or Delete an Endpoint Agent
          • Endpoint Agent Installation Reference
          • NPCAP Driver Upgrade Management
        • Configuring
          • Configure Endpoint Agent Labels
          • Endpoint Agent Proxy Configuration for Scheduled Tests
        • Managing
          • Manage Endpoint Agent Settings
        • How Does the Endpoint Agent Work
        • Cisco Secure Client ThousandEyes Endpoint Agent Module
        • Endpoint Agent Licensing
        • Assigning tests to an Endpoint Agent
        • Data Collected by Endpoint Agent
        • Reporting on data collected by Endpoint Agent
        • Endpoint Agent VPN Support
        • Endpoint Agent TCP Support
        • Endpoint Agent End-user Experience
        • Endpoint Agent FAQ
      • Working with Agent Settings
      • Obtaining a list of ThousandEyes Agent IP Addresses with te-iplist
    • Tests
      • HTTP Server Tests
        • Collecting Proxy Metrics
        • POSIX Extended Regular Expression Syntax (Quick Reference)
        • POSIX Extended Regular Expression Syntax
        • Custom User-Agent Strings in a Web Test
        • Two-Step HTTP Testing (OAuth)
      • Web-Layer Tests
      • Network Tests
        • Network Tests Explained
        • Agent-to-Agent Test Overview
        • DSCP Options in Network Tests
      • DNS Tests
      • Voice Tests
        • Using the SIP Server View
        • Using the RTP Stream View
      • BGP Tests
        • Inside-Out BGP Visibility
        • Using the BGP Route Visualization View
        • Using the BGP Updates Table
        • Working with Raw BGP Data
        • Reasons for Failure of Private Peering with ThousandEyes
        • RPKI
      • API Tests
        • Using the API Test Step Builder
      • Templates
        • User-defined Templates
      • Recommendations
        • Associated Service Recommendations
        • AWS Test Recommendations
      • ThousandEyes Metrics: What Do Your Results Mean?
      • Sharing Test Data
      • Working with Test Settings
      • Scheduled Versus Instant Tests
      • Working with Instant Tests
      • Working with Labels for Agent and Test Groups
      • Multi-Service Views
      • Identifying Traffic from ThousandEyes Agents
      • Excluding ThousandEyes Agents from Google Analytics
    • Internet and WAN Monitoring
      • Path Visualization
        • How Path Trace Works
        • MPLS Tunnel Inference Using Deep Path Analysis
        • Troubleshooting
          • Reasons for Missing Information on the Visualization View
          • Virtual Machine with NAT Breaks Path Visualization
          • Cisco ASA Breaks Path Visualization
          • Path Visualization: Edge Firewall Incorrectly Shows a Single Hop to the Destination
          • Network Overview Shows Packet Loss That Does Not Appear in Path Visualization
      • Views
        • Using the Network Overview
        • Using the FTP Server View
        • Using the HTTP Server View
        • Using the DNS Server View
        • Using the DNS Domain Trace View
        • Using the DNSSEC Trace View
        • Using the API Test Views
      • Troubleshooting
        • CLI Network Troubleshooting Utilities
        • HTTP Server Test Fails with SSL Error
        • HTTP Server Test Fails with SSL Error: OpenSSL SSL_connect: SSL_ERROR_SYSCALL
        • HTTP Server Test Error "dh Key Too Small"
    • Browser Synthetics
      • Browser Synthetics Test Types
      • Browser Synthetics Disambiguation
      • Test Settings for Page Load and Transaction Tests
      • Navigating Waterfall Charts for Page Load and Transaction Tests
      • Using Round Robin Test Scheduling
      • What Information Is Transmitted in a Page Load or Transaction Test?
      • Transaction Test SSO Support
        • Implementing SSO in Transaction Scripts
        • Caveats for NTLM/Kerberos Authentication
        • TOTP Examples for SSO
      • Page Load Tests
        • When to Use a Page Load Test
        • Creating a Page Load Test
        • Using the Page Load View
        • How to Generate a HAR File
        • Migrating to Single Interval for Page Load Tests
        • Creating a Page Load Test that Uses SSO
      • Transaction Tests
        • Getting Started With Transaction Tests
          • When to Use a Transaction Test
          • Transaction Tests Compared With Other Test Types
          • ThousandEyes Recorder
          • ThousandEyes Recorder Permissions
          • Working With Web Development Tools
          • Working With Secure Credentials
          • Transaction Test Table Tab View
          • Transaction Metrics on Alerts and Dashboards
          • Screenshots in Transaction Test Views
        • Transaction Test Development Guide
          • Creating Robust Transaction Scripts
            • Optimizing and Troubleshooting Transaction Scripts
            • Transaction Scripting Tips and Tricks
          • Transactions – Executing Custom JavaScript Code
        • Use Cases | Code Examples
          • Uploading or Downloading Files in a Script
            • Transaction Scripting Examples for File Downloads
          • Include API Calls in a Transaction Test
            • Using the node-fetch module
            • Using the net module
            • Using the tls module
        • Transaction Scripting Reference
      • Dual Chromium Option
        • Why Are Regular Chromium Upgrades Needed?
        • Configuring Dual Chromium
        • Working With Dual Chromium
        • Chromium Update History
        • Chromium Upgrade Known Issues
    • Endpoint Experience
      • Test Settings
        • Monitoring an Application using Synthetic Tests
        • Configuration Options for Synthetic Tests
        • Managing Synthetic Tests
        • Real User Tests
      • Viewing Data
        • Endpoint Agent Scheduled Tests View
        • Endpoint Agent Real User Tests View
        • Endpoint Agent Local Networks View
        • Endpoint Agent Dynamic Tests View
        • Endpoint Agent Views
        • Endpoint Views Reference
      • Troubleshooting
        • Step-by-Step Guide to Troubleshooting Endpoint Agent Problems
        • Troubleshooting Endpoint Agent Issues
    • Connected Devices
      • Connected Devices Tests
        • Routing
          • Traceroute
        • Network
          • Speed Tests
          • Latency, Loss, Disconnections, and Jitter Tests
          • Responsiveness (Latency under Load) Tests
        • DNS
          • DNS Resolution Tests
        • Web
          • Web Browsing Lite Tests
          • Generic Streaming (HLS/DASH) Tests
        • Voice
        • Dynamic Application Test Suites
          • Gameplay Test Suite
          • Video Conferencing Test Suite
          • Social Media Test Suite
          • Game Store Test Suite
          • Video Streaming Test Suite
            • Netflix Streaming Tests
            • YouTube Streaming Tests
            • BBC iPlayer Streaming Tests
          • Content Delivery Network (CDN) Test Suite
        • Local Network Information
          • Data Usage
      • Test Management
        • Test Triggers
          • Scheduled Tests
          • Instant Tests
        • Testing Thresholds
        • Test Targets
          • Test Server Methodology
        • Automatic Test Configuration Retrieval
      • Device Agents
        • Router Agents
          • Router Agent Device Support
        • Installing Device Agent with Docker
        • Connected Devices Agent Release Versions
      • Usage Guides
        • Viewing Charts
        • Configuring Charts
        • Using Maps
        • Exporting Data
        • Importing Metadata
        • Managing Metadata
        • Creating Reports
        • Viewing Agents
        • Using Test Schedules
        • Accessing Your APIs
        • Using ConstantCare
      • Cisco Real Speed
    • Cloud Insights
      • Integrations
      • Views
      • Settings
    • Traffic Insights
      • Traffic Insights System Requirements
      • Traffic Insights Configuration Guide
      • Traffic Insights Views and Settings
      • Traffic Insights FPS Monitoring
    • WAN Insights
      • WAN Insights Quick Start
        • How to Activate ThousandEyes WAN Insights
        • WAN Insights Introductory Tour, Part 1
        • WAN Insights Introductory Tour, Part 2
        • WAN Insights Introductory Tour, Part 3
      • Introducing WAN Insights
        • What Is WAN Insights?
        • WAN Insights Value-Add
        • Why Use WAN Insights?
        • Using WAN Insights Together With ThousandEyes Network Assurance
        • Using WAN Insights Together with vAnalytics and vManage
        • WAN Insights Key Components
        • Enabling WAN Insights
        • Getting Support for WAN Insights
      • WAN Insights Terminology and Reference
      • WAN Insights Technical Overview
        • Application Categories
        • Sites, Routers, Paths, and Interfaces
        • Application Traffic Types
        • Estimating User Counts
        • Estimating Throughput
        • Capacity Planning
        • Understanding Quality
        • Life of a Recommendation
        • Understanding Recommendations
        • WAN Insights and ThousandEyes Alerts
      • WAN Insights User Interface
        • Logging In for the First Time
        • WAN Insights Screens and Workflows
        • Recommendations Screen
        • Recommendation Cards, Explained
        • Recommendation Details Modal
        • Endpoint-Pair Quality Comparison
        • Site Details Screen
        • Capacity Planning Screen
        • Capacity Detail Modal
        • Enter or Upload Bandwidth Data
      • Common Tasks
        • Adding Business-Critical Applications to WAN Insights
        • Email Notifications
        • Adding and Managing WAN Insights Users
        • Applying WAN Insights Recommendations
    • Internet Insights
      • Internet Insights Terminology
      • Limited Outage Map
      • Internet Insights Screens
        • Overview Screen
        • Internet Insights Service Views Screen
        • Application Outages
        • Network Outages
        • Catalog Settings Screen
      • Saving and Sharing from Internet Insights
      • Configuring Internet Insights
      • Provider Labels
      • Using Alerts and Dashboards With Internet Insights
        • My Affected Tests
        • Setting Up Alert Rules for Internet Insights
        • Using the Internet Insights Built-In Dashboard
    • Event Detection
    • Alerts
      • Creating and Editing Alert Rules
        • Global and Location Alert Conditions
        • Alert Rule Severity
        • Adaptive Alert Detection
        • Dynamic Baselines
        • Transport Layer Security (TLS) Alerts
        • Alert Rules for Devices
        • Alert Metrics Reference
      • Default Alert Rules
      • Viewing Alerts
      • Alert Clearing
        • Alert Suppression Windows
      • Alert Notifications
      • Standard Notification Methods
        • Alert Notifications via Email
        • Alert Notifications via SMS
        • Classic Webhooks for Alert Notifications
    • Dashboards
      • Using the Dashboard
      • Customizing Your Dashboard
      • Using the Dashboard Templates
      • Dashboard Widgets
      • Embedding Dashboard Widgets in External Web Sites
      • Excluding Periods of Data From a Dashboard
      • Dashboard Sharing and Snapshots
      • Dashboard Labels
      • Troubleshooting with Dashboard Drill Down
      • Tailoring Dashboards with Dashboard Filters
    • Device Layer
      • Discovering Device-Layer Devices
      • Device Discovery Results
      • Using the Device Layer View
    • Account Management
      • User Registration
        • SAML JIT Provisioning
        • ThousandEyes Support for SCIM
          • How to Configure SCIM with Azure Active Directory
          • How to Configure SCIM with Okta
      • Authorization
        • Role-Based Access Control
          • Role-Based Access, Explained
          • Built-In Roles and Permissions
        • Account Groups
          • What is an Account Group?
          • Working with Account Settings
          • Users in Multiple Organizations
          • Changing Ownership of a Test
          • Working with Time Zone Settings
        • OAuth 2.0 with ThousandEyes
          • Integrations with OAuth 2.0
        • Adding a Profile Image with Gravatar
      • Authentication
        • Logging In
        • How to Configure Single Sign-On
      • User Activity
        • Working with the Activity Log
        • ThousandEyes User Session Timeouts and Terminations
        • How Long is my Data Accessible via ThousandEyes?
        • Retaining Data Beyond the 90-Day Limit
        • Multi-Region Cloud Support
      • Usage-Based Billing
        • Our Consumption Models
          • Configuration-Based Consumption Model
          • Usage-Based Consumption Model
          • Device Agent Consumption Model
        • About Units
        • Test Type Layers and Units
        • Setting Quotas
        • Calculating Units
        • FAQs: Usage
      • Customer Security and Privacy Responsibilities
    • Integrations
      • Custom Webhooks
        • Using OAuth 2.0 Authentication for Your Custom Webhook
        • Webhook Variables
      • Custom Webhook Examples
        • Microsoft Teams for Alert Notifications
        • Cisco Webex for Alert Notifications
        • Google Chat for Alert Notifications
        • Event-Driven Ansible for Alert Notifications
        • Splunk Alert Notification
      • Custom-Built Integrations
        • PagerDuty for Alert Notifications
        • ServiceNow for Alert Notifications
          • Incident Management
        • Slack for Alert Notifications
        • AppDynamics for Alert Notifications
        • AppDynamics for Test Recommendations
        • AWS for Test Recommendations
        • AWS for Cloud Insights
          • AWS for Cloud Insights Using CLI
        • Meraki for Data Enrichment
        • Webex Control Hub Integration
        • Microsoft Teams Integration
        • ThousandEyes for OpenTelemetry
          • Configuring ThousandEyes for OpenTelemetry
            • Configuring ThousandEyes for OpenTelemetry Using the API
            • Configuring ThousandEyes for OpenTelemetry Using the UI
          • Configuring ThousandEyes for Splunk Cloud or Enterprise
            • Configuring ThousandEyes for Splunk Cloud or Enterprise using the API
            • Configuring ThousandEyes for Splunk Cloud or Enterprise using the UI
          • ThousandEyes for OpenTelemetry Data Model
            • ThousandEyes for OpenTelemetry Data Model v1
              • OpenTelemetry Collector Data v1 Example
            • ThousandEyes for OpenTelemetry Data Model v2
              • ThousandEyes for OpenTelemetry Data Model v2 - Metrics
                • OpenTelemetry Collector Data v2 Metrics Example
                • ThousandEyes for OpenTelemetry Data Model Metrics - Migration from v1 to v2
              • ThousandEyes for OpenTelemetry Data Model v2 - Traces
                • OpenTelemetry Collector Data v2 Traces Example
          • OpenTelemetry Collector Configuration
          • Automatic Disabling of Failing Streaming Integrations
        • Cisco ThousandEyes App for Splunk
          • Configuration
          • Inputs
          • Dashboards
          • Troubleshooting
        • Distributed Tracing with Splunk Observability APM
    • Best-Practices Guides
      • Choosing the Right Test Protocol for Network & App Synthetics Tests
      • Optimizing SYN vs SACK Probing Methods to Avoid Unexplainable Packet Loss
      • Using Dashboards to Tell a Story
      • Best Practices for Implementing Account Groups
      • Monitoring Microsoft 365
      • Monitoring Microsoft Teams
      • Monitoring Salesforce
      • Monitoring Slack
      • Monitoring Webex Meetings with Endpoint Agents
      • Monitoring Webex Calling
      • Monitoring Webex Meetings with Cloud and Enterprise Agents
      • Monitoring Zoom
    • API
      • Create/Update/Delete Tests Using the ThousandEyes API
      • Obtaining a List of ThousandEyes Agent IP Addresses
      • Writing JSON to API Produces HTTP 406 Response Code
    • Privacy-Related
      • Authorized Subprocessors for ThousandEyes Network Intelligence Platform
    • Archived Documentation
      • Archived - Displaying and Alerting for Unit Consumption
      • Archived - Dependency Tree for ThousandEyes Enterprise Agent Software
      • Archived - Getting Started with ThousandEyes
      • Archived - Sending ThousandEyes Alerts to AppDynamics
      • Archived - ThousandEyes Infrastructure Changes
      • Archived - Using the Transactions (Classic) View
      • Archived - Transaction Test Migration Workflow
      • Archived - Instructions for Mitigating Meltdown and Spectre on Enterprise Agents
      • Archived - Bash (ShellShock) Security Notice
      • Archived - Endpoint Installation using Customized Installers
      • Archived - Configuring Endpoint Agent Setup
      • Archived - Creating Scheduled Tests on Endpoint Agents
      • Archived - Managing the Endpoint Agent
      • Archived - Enterprise Agent Installation on Juniper NFX Routers
      • Archived - Installing and Removing ThousandEyes X Virtual Framebuffer on Enterprise Agents
      • Archived - Permitted Content Types for Page Load Tests
  • Archived Release Notes
    • 2024
      • Release Notes: January 2024
      • Release Notes: February 2024
      • Release Notes: March 2024
      • Release Notes: April 2024
      • Release Notes: May 2024
      • Release Notes: June 2024
      • Release Notes: July 2024
      • Release Notes: August 2024
    • 2023
      • Release Notes: January 2023
      • Release Notes: February 2023
      • Release Notes: March 2023
      • Release Notes: April 2023
      • Release Notes: May 2023
      • Release Notes: June 2023
      • Release Notes: July 2023
      • Release Notes: August 2023
      • Release Notes: September 2023
      • Release Notes: October 2023
      • Release Notes: November 2023
      • Release Notes: December 2023
    • 2022
      • Release Notes: January 2022
      • Release Notes: February 2022
      • Release Notes: March 2022
      • Release Notes: April 2022
      • Release Notes: May 2022
      • Release Notes: June 2022
      • Release Notes: July 2022
      • Release Notes: August 2022
      • Release Notes: September 2022
      • Release Notes: October 2022
      • Release Notes: November 2022
      • Release Notes: December 2022
    • 2021
      • Release Notes: January 2021
      • Release Notes: February 2021
      • Release Notes: March 2021
      • Release Notes: April 2021
      • Release Notes: May 2021
      • Release Notes: June 2021
      • Release Notes: July 2021
      • Release Notes: August 2021
      • Release Notes: September 2021
      • Release Notes: October 2021
      • Release Notes: November 2021
      • Release Notes: December 2021
    • 2020
      • Release Notes: January 2020
      • Release Notes: February 2020
      • Release Notes: March 2020
      • Release Notes: April 2020
      • Release Notes: May 2020
      • Release Notes: June 2020
      • Release Notes: July 2020
      • Release Notes: August 2020
      • Release Notes: September 2020
      • Release Notes: October 2020
      • Release Notes: November 2020
      • Release Notes: December 2020
    • 2019
      • Release Notes: 2019-01-08
      • Release Notes: 2019-02-06
      • Release Notes: 2019-02-20
      • Release Notes: 2019-03-06
      • Release Notes: 2019-03-19
      • Release Notes: 2019-04-02
      • Release Notes: 2019-04-30
      • Release Notes: 2019-05-14
      • Release Notes: 2019-05-30
      • Release Notes: 2019-06-11
      • Release Notes: 2019-07-23
      • Release Notes: 2019-08-06
      • Release Notes: 2019-08-20
      • Release Notes: 2019-09-03
      • Release Notes: 2019-09-17
      • Release Notes: 2019-10-03
      • Release Notes: 2019-10-15
      • Release Notes: 2019-10-29
      • Release Notes: 2019-11-12
      • Release Notes: 2019-11-26
      • Release Notes: 2019-12-10
    • 2018
      • Release Notes: 2018-01-10
      • Release Notes: 2018-01-17
      • Release Notes: 2018-01-31
      • Release Notes: 2018-02-14
      • Release Notes: 2018-03-07
      • Release Notes: 2018-03-14
      • Release Notes: 2018-03-28
      • Release Notes: 2018-04-11
      • Release Notes: 2018-04-25
      • Release Notes: 2018-05-09
      • Release Notes: 2018-05-23
      • Release Notes: 2018-06-06
      • Release Notes: 2018-06-20
      • Release Notes: 2018-07-03
      • Release Notes: 2018-07-18
      • Release Notes: 2018-08-01
      • Release Notes: 2018-08-15
      • Release Notes: 2018-08-29
      • Release Notes: 2018-09-12
      • Release Notes: 2018-09-26
      • Release Notes: 2018-10-10
      • Release Notes: 2018-10-23
      • Release Notes: 2018-11-13
      • Release Notes: 2018-11-27
      • Release Notes: 2018-12-18
    • 2017
      • Release Notes: 2017-01-04
      • Release Notes: 2017-01-18
      • Release Notes: 2017-02-01
      • Release Notes: 2017-02-16
      • Release Notes: 2017-03-02
      • Release Notes: 2017-03-15
      • Release Notes: 2017-03-29
      • Release Notes: 2017-04-12
      • Release Notes: 2017-04-26
      • Release Notes: 2017-05-10
      • Release Notes: 2017-05-24
      • Release Notes: 2017-06-06
      • Release Notes: 2017-06-21
      • Release Notes: 2017-07-07
      • Release Notes: 2017-07-19
      • Release Notes: 2017-08-02
      • Release Notes: 2017-08-16
      • Release Notes: 2017-08-30
      • Release Notes: 2017-09-13
      • Release Notes: 2017-09-27
      • Release Notes: 2017-10-12
      • Release Notes: 2017-10-25
      • Release Notes: 2017-11-08
      • Release Notes: 2017-11-29
      • Release Notes: 2017-12-13
    • 2016
      • Release Notes: 2016-01-06
      • Release Notes: 2016-01-20
      • Release Notes: 2016-02-03
      • Release Notes: 2016-02-17
      • Release Notes: 2016-03-02
      • Release Notes: 2016-03-16
      • Release Notes: 2016-03-30
      • Release Notes: 2016-04-13
      • Release Notes: 2016-04-27
      • Release Notes: 2016-05-11
      • Release Notes: 2016-05-25
      • Release Notes: 2016-06-08
      • Release Notes: 2016-06-22
      • Release Notes: 2016-07-06
      • Release Notes: 2016-07-20
      • Release Notes: 2016-08-03
      • Release Notes: 2016-08-17
      • Release Notes: 2016-08-31
      • Release Notes: 2016-09-14
      • Release Notes: 2016-09-28
      • Release Notes: 2016-10-12
      • Release Notes: 2016-10-26
      • Release Notes: 2016-11-09
      • Release Notes: 2016-11-23
      • Release Notes: 2016-12-07
      • Release Notes: 2016-12-21
    • 2015
      • Release Notes: 2015-01-07
      • Release Notes: 2015-01-21
      • Release Notes: 2015-02-04
      • Release Notes: 2015-02-18
      • Release Notes: 2015-03-04
      • Release Notes: 2015-04-01
      • Release Notes: 2015-04-15
      • Release Notes: 2015-04-29
      • Release Notes: 2015-05-13
      • Release Notes: 2015-05-27
      • Release Notes: 2015-06-10
      • Release Notes: 2015-06-24
      • Release Notes: 2015-07-08
      • Release Notes: 2015-07-22
      • Release Notes: 2015-08-05
      • Release Notes: 2015-08-19
      • Release Notes: 2015-09-16
      • Release Notes: 2015-09-30
      • Release Notes: 2015-10-14
      • Release Notes: 2015-10-28
      • Release Notes: 2015-11-11
      • Release Notes: 2015-12-02
      • Release Notes: 2015-12-16
    • 2014
      • Release Notes: 2014-01-09
      • Release Notes: 2014-01-22
      • Release Notes: 2014-02-05
      • Release Notes: 2014-03-05
      • Release Notes: 2014-03-19
      • Release Notes: 2014-04-09
      • Release Notes: 2014-04-30
      • Release Notes: 2014-06-04
      • Release Notes: 2014-06-11
      • Release Notes: 2014-06-26
      • Release Notes: 2014-07-09
      • Release Notes: 2014-07-23
      • Release Notes: 2014-08-20
      • Release Notes: 2014-09-04
      • Release Notes: 2014-09-17
      • Release Notes: 2014-10-01
      • Release Notes: 2014-10-15
      • Release Notes: 2014-10-29
      • Release Notes: 2014-11-12
    • 2013
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On this page
  • UDP Latency and Loss Test
  • UDP Latency Test Frequency
  • UDP Latency Test Metrics
  • UDP Latency Under Load Test
  • ICMP Ping Test
  • Contiguous Latency and Loss (Disconnections) Test
  • UDP Jitter Test
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  2. Connected Devices
  3. Connected Devices Tests
  4. Network

Latency, Loss, Disconnections, and Jitter Tests

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Last updated 5 months ago

Latency, packet loss and jitter affect everything you do on the internet. If these fare badly, then every other test will fare badly. So they are critical to measure. You can find more detailed information in the blog series.

UDP Latency and Loss Test

The UDP (User Datagram Protocol) latency and loss test measures the round-trip time of small UDP packets between the router and a target test server. Each packet consists of an 8-byte sequence number and an 8-byte timestamp. If a packet is not received back within two seconds of sending, it is treated as lost.

UDP Latency Test Frequency

The test operates continuously in the background. It is configured to randomly distribute the sending of the echo requests over a fixed interval, reporting the summarized results once the interval has elapsed.

By default, the test is configured to send a packet every 1.5 seconds, meaning a maximum of 2,400 packets sent per hour. This number will usually be lower, typically around 2000 packets, as by default the test will not send packets when other tests are in progress, or when cross-traffic (i.e., other internet activity – see ) is detected. A higher or lower sampling rate may be used if desired, up to a maximum of reporting on a one-minute aggregation level, or a minimum of reporting on a 24-hour aggregation level.

UDP Latency Test Metrics

The test records the number of packets sent each hour, the average round-trip time of the packets, and the total number of packets lost. The test uses the 99th percentile when calculating the summarized minimum, maximum and average results on the Device Agent.

The following key metrics are recorded by the test:

  • Round-trip latency (mean).

  • Round-trip latency (minimum).

  • Round-trip latency (maximum).

  • Round-trip latency (standard deviation).

  • Round-trip packet loss.

  • Number of packets sent and received.

  • Hostname and IP address of the test server.

UDP Latency Under Load Test

  1. During normal operation, the UDP latency and loss test runs continually. The test only pauses operation when another test is scheduled to run.

  2. However, during any download or upload speed test that is enabled for latency under load, the UDP latency and loss test continues to send UDP latency measurement packets while the speed test is running so it can measure the impact on the latency caused by said speed test.

  3. The latency results obtained during speed tests are reported as latency under load results, which are separate from the standard latency and loss results derived during normal operation.

The speed test will always load the line to 100% capacity, providing a worst-case latency result.

If the UDP latency and loss test is set to use a higher priority queue using ECN (Explicit Congestion Notification) or DSCP (Differentiated Services Code Point), it will provide insight into the effectiveness of this queuing strategy when compared with another router running UDP latency and loss without access to a higher priority queue.

ICMP Ping Test

We offer ICMP (Internet Control Message Protocol) ping tests that, similar to the UDP latency test, provide the round-trip time of a reply from an ICMP type 8 (echo request) packet sent to the target hostname or IP address.

Contiguous Latency and Loss (Disconnections) Test

The contiguous latency and loss (disconnections) test is an optional extension to the UDP latency/loss test. It records instances when two or more consecutive packets are lost to the same test server. Alongside each event, we record the timestamp, the number of packets lost and the duration of the event.

By executing the test against multiple diverse servers, you can begin to observe server outages (when multiple probes see disconnection events to the same server simultaneously) and disconnections of your users' home or office connection (when a single probe loses connectivity to all servers simultaneously).

Typically, this test works best at a high frequency like the UDP latency/loss test of one packet every 1.5s, which is approximately ~2000 packets per hour given reasonable levels of cross-traffic. This provides a resolution of 2-4 seconds for disconnection events.

UDP Jitter Test

The UDP jitter test is commonly used to simulate a synthetic VoIP (voice-over-IP) call where a real SIP server is unavailable. It uses a fixed-rate stream of UDP traffic, running between agent and test node. A bi-directional 64 kbps stream is used with the same characteristics and properties (i.e. packet sizes, delays, bitrate) as the G.711 audio codec.

The agent initiates the connection, thus overcoming NAT (network address translation) issues, and informs the server of the rate and characteristics with which it would like to receive the return stream.

The standard configuration uses 500 packets upstream and 500 packets downstream.

The agent records the round-trip-time (latency), the number of packets it sent and received (loss rate), and the jitter observed for packets it received from the server. The server does the same, but with the reverse traffic flow, thus providing bi-directional loss and jitter. Importantly, we are able to use these measures as an alternative when the UDP latency and loss test is not available to be used.

The UDP latency under load test utilizes the continuous running of the to create a latency under load metric when run in parallel with a . This special use case offers latency under load results via UDP, unlike our , which currently only supports TCP. How it works is:

Jitter is calculated using the PDV (packet delay variation) approach described in section 4.2 of . The 99th percentile is recorded and used in all calculations when deriving the PDV.

Path Quality Part 1: The Surprising Impact of 1% Packet Loss
Testing Thresholds
UDP latency and loss test
speed test
responsivenes (latency under load) test
RFC 5481