CAIDA's IPv4 Topology Project involves active measurements including IP- and AS-level connectivity as well as round trip time measurements through the core infrastructure of the Internet. CAIDA has many monitors around the world, each providing a unique vantage point on the backbone connectivity of the Internet. CAIDA makes both the raw and aggregated datasets available to qualified researchers.

• IPv4 Routed /24 Topology Dataset
• Raw Skitter Topology Traces
• AS Links (AS Adjacencies)
• Traceroute Probe Method 2008-08 Dataset
• Router Adjacencies
• Internet Topology Data Kits (ITDK 2002-04 and 2003-04)

CAIDA's Bandwidth Estimation data includes demonstrations of the functionality of various bandwidth estimation tools under both laboratory and realistic traffic conditions. CAIDA also collected bandwidth measurements over the Internet between CAIDA's active monitors during the summer of 2004.

• Laboratory Test Measurements - no cross traffic
• Laboratory Test Measurements - realistic traffic
• Internet-wide Measurements between Active Monitors