flow analyzer
Syntax
flow analyzer {
profile profile-name;
aging-time seconds;
}Hierarchy Level
[edit]
Description
Configure the DC Flow Analyzer (DFA) feature to learn and monitor traffic flows on the device. The DFA also helps track RDMA ROCEv2 flow destination queue pair information in Junos OS Evolved and other AI DC workloads. DFA continuously tracks flows by dynamically learning a default flow tuple that includes source and destination IP addresses, IP protocol, ingress interface, Layer 4 source and destination ports, etherType, and destination queue pair. This feature monitors successful and dropped flows, and supports IPv4 and IPv6 traffic. Each learned flow is associated with per‑flow counters and timing information (for example, active time and byte or packet statistics) to provide visibility into traffic behavior.
You must also configure the forwarding-profile flow-profile
statement at the [edit packet-forwarding-options] hierarchy
level to allocate enough space in the unified forwarding table.
Default
Disabled
Options
| profile profile-name | Configure a profile name. You use this name in the
flow-analyzer action of a firewall filter
to create flows to learn and monitor. |
| aging-time seconds |
Configure the amount of time flows can be inactive before aging out. If the aging time is changed after a flow is learned, the modified aging time is applied to both new and to existing learned flows.
|
Required Privilege Level
admin—To view this statement in the configuration.
admin-control—To add this statement to the configuration.
Release Information
Statement introduced in Junos OS Evolved Release 25.2X100-D20.