- Written by John Schimmel
- Posted on March 13, 2026
- Updated on March 13, 2026
- 214 Views
The Dapper action, derived from Brown University research, identifies TCP session issues by measuring specific connection attributes. This analysis determines whether performance degradation stems from the client, server, or network devices.
- Written by John Schimmel
- Posted on September 22, 2025
- Updated on September 24, 2025
- 1563 Views
The Arista Service Node (SN) provides specialized packet processing within the DANZ Monitoring Fabric (DMF), which is not easily accomplished within the CPU on a switch. The SN provides a packet processing pipeline tied to a physical interface, reading packets and writing results from the same interface.
- Written by John Schimmel
- Posted on May 2, 2025
- Updated on May 2, 2025
- 2790 Views
The DANZ Monitoring Fabric (DMF) Aggregate sFlow takes sFlow packet samples and generates an IPFIX report containing the flow 5-tuple, metadata, and timestamps from switches that the packet passed through.
- Written by John Schimmel
- Posted on May 2, 2025
- Updated on May 2, 2025
- 2814 Views
The DANZ Monitoring Fabric (DMF) allows the integration and monitoring of virtual machines in a VMware NSX fabric deployed in a vSphere environment. The DMF Controller communicates with NSX to retrieve its managed inventory and configures port mirroring sessions for selected virtual machines managed by the NSX fabric.
- Written by John Schimmel
- Posted on April 24, 2025
- Updated on June 3, 2025
- 5343 Views
The DANZ Monitoring Fabric (DMF) Aggregate Arista GRE TAP action receives GRE-encapsulated packet samples from EOS switches, and generates an IPFIX report containing the flow 5-tuple, metadata, and timestamps from switches that the packet passed through. Use the IPFIX report to determine the flows in a data fabric, monitor server session initialization delays, estimate the bandwidth of flows, and learn the path of packets through the fabric.
