High-performance data analysis depends on the accuracy of its underlying data; one possible enhancement of that accuracy would be a timestamp inserted into a tap-aggregation packet that showed exactly when the data packet was captured.
You can configure the tap-aggregation feature to insert a timestamp in packets at data capture, before the packets are sent to the tool ports for analysis. You must configure the PTP reference clock on the tap-aggregation switch and PTP must be running when the timestamp is inserted. Your tap aggregation switch must also sync the PTP FPGA's recovered time-of-day with the system chip's time-of-day.
Use the [set interfaces interface-name timestamp ingress] option to enable timestamping per interface.
| Product / Application | Software | Introduced Release |
|---|---|---|
| QFX5130-32CD | Junos OS Evolved | 25.4R1 |
| QFX5130E-32CD | Junos OS Evolved | 25.4R1 |
| QFX5130-48C | Junos OS Evolved | 25.4R1 |
| QFX5130-48CM | Junos OS Evolved | 25.4R1 |
| QFX5220-32CD | Junos OS Evolved | 25.4R1 |
| QFX5220-32CD | Junos OS Evolved | 25.2X100-D20 |
| QFX5220-32CD | Junos OS Evolved | 23.4X100-D40 |
| QFX5220-128C | Junos OS Evolved | 25.4R1 |
| QFX5230-64CD | Junos OS Evolved | 25.4R1 |
| QFX5240-64QD | Junos OS Evolved | 25.4R1 |
| QFX5240-64OD | Junos OS Evolved | 25.4R1 |
| QFX5241-64OD | Junos OS Evolved | 23.4X100-D40 |
| QFX5241-64QD | Junos OS Evolved | 23.4X100-D40 |
| QFX5241-32OD | Junos OS Evolved | 23.4X100-D43 |
| QFX5250-64OE-L | Junos OS Evolved | 25.2X100-D20 |