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Junos OS supports data center bridging quantized congestion notification (DCQCN), which is a congestion management mechanism that sends a congestion notification message through the network to the ultimate source of the congestion, stopping congestion at its source.
| Product / Application | Software | Introduced Release |
|---|---|---|
| EX4650-48Y | Junos OS | 18.3R1 |
| QFX5100 | Junos OS | 18.1R1 |
| QFX5110 | Junos OS | 18.1R1 |
| QFX5120-48Y | Junos OS | 18.3R1 |
| QFX5120-32C | Junos OS | 19.1R1 |
| QFX5130-32CD | Junos OS Evolved | 20.3R1 |
| QFX5130E-32CD | Junos OS Evolved | 23.4R2 |
| QFX5130-48C | Junos OS Evolved | 23.4R1 |
| QFX5130-48CM | Junos OS Evolved | 23.4R2 |
| QFX5120-48T | Junos OS | 20.2R1 |
| QFX5120-48YM | Junos OS | 20.4R1 |
| QFX5200-32C | Junos OS | 18.1R1 |
| QFX5210-64C | Junos OS | 18.1R1 |
| QFX5230-64CD | Junos OS Evolved | 22.2X100-D10 |
| QFX5250-64OE-L | Junos OS Evolved | 25.2X100-D20 |
| QFX5700 | Junos OS Evolved | 21.2R1 |
| QFX5700E | Junos OS Evolved | 23.4R2 |
| QFX10008 | Junos OS | 17.1R1 |
| QFX10016 | Junos OS | 17.1R1 |