Data Center Flow Analyzer

The Data Center Flow Analyzer (DFA) feature provides dynamic, per-flow visibility on the switch. The DFA also helps track RDMA ROCEv2 flow destination queue pair information in Junos OS Evolved and other AI DC workloads. The DFA learns flows over time based on a default tuple (source IP, destination IP, IP protocol version, ingress interface, Layer 4 source port, Layer 4 destination port, and destination queue pair), and tracks counters for each learned flow. The DFA monitors both forwarded and dropped traffic and supports IPv4 and IPv6 flows. You can selectively learn flows by applying filters (for example, matching on destination IP address or UDP destination port) and group flows for targeted monitoring. To enable this feature, configure the flow analyzer statement at the [edit] hierarchy level and specify the DFA profile name as an action for a firewall filter. To view information about the learned flows, use the show flow table command.