TOI Author :: John Schimmel

Session templates allow supported DANZ Monitoring Fabric (DMF) managed service actions to specify a selection of keys for matching packet fields and classifying flows. If an action lacks a defined session template, the system applies the default template appropriate for that action. Specified keys provide valid values for the IPFIX record. As of release 8.10, session template support includes TCP Analysis, Flow Diff, and Session Slice.

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.

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.

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.

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.

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.