# An Internet Heartbeat

## TL;DR

This paper proposes an 'Internet heartbeat' mechanism where nodes periodically send lightweight measurement traffic to improve network visibility and diagnostics, addressing challenges of active and passive measurement methods.

## Contribution

It introduces the concept of an Internet heartbeat for continuous network monitoring, exploring its design, potential applications, incentives, and deployment strategies.

## Key findings

- Heartbeat aggregation enables better network introspection
- Design considerations for implementing Internet heartbeat
- Potential use cases and deployment pathways

## Abstract

Obtaining sound inferences over remote networks via active or passive measurements is difficult. Active measurement campaigns face challenges of load, coverage, and visibility. Passive measurements require a privileged vantage point. Even networks under our own control too often remain poorly understood and hard to diagnose. As a step toward the democratization of Internet measurement, we consider the inferential power possible were the network to include a constant and predictable stream of dedicated lightweight measurement traffic. We posit an Internet "heartbeat," which nodes periodically send to random destinations, and show how aggregating heartbeats facilitates introspection into parts of the network that are today generally obtuse. We explore the design space of an Internet heartbeat, potential use cases, incentives, and paths to deployment.