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In an Ethernet environment, ARP is used to map a MAC address to an IP address. ARP dynamically binds the IP address (the logical address) to the correct MAC address. Before IP unicast packets can be sent, ARP discovers the MAC address used by the Ethernet interface where the IP address is configured.
| Product / Application | Software | Introduced Release |
|---|---|---|
| ACX710 | Junos OS | 20.2R1 |
| ACX4000 | Junos OS | 12.3X51-D10 |
| ACX5000 | Junos OS | 15.1X54-D20 |
| ACX5448-D | Junos OS | 19.3R1 |
| ACX5448-M | Junos OS | 19.3R1 |
| ACX5448 | Junos OS | 18.3R1 |
| QFX5241-64OD | Junos OS Evolved | 25.4R1 |
| QFX5241-64QD | Junos OS Evolved | 25.4R1 |
| QFX5241-32OD | Junos OS Evolved | 25.4R1 |
| QFX5241-32OD | Junos OS Evolved | 23.4X100-D40 |
| QFX5700 | Junos OS Evolved | 24.4R1 |
| SRX300 | Junos OS | 15.1X49-D35 |
| SRX320 | Junos OS | 15.1X49-D35 |
| SRX340 | Junos OS | 15.1X49-D35 |
| SRX345 | Junos OS | 15.1X49-D35 |
| SRX380 | Junos OS | 20.1R1 |
| SRX550 | Junos OS | 12.1R1 |
| SRX550 HM | Junos OS | 15.1X49-D30 |
| SRX2300 | Junos OS | 23.4R1 |
| SRX4100 | Junos OS | 15.1X49-D65 |
| SRX4120 | Junos OS | 25.2R1 |
| SRX4200 | Junos OS | 15.1X49-D65 |
| SRX4300 | Junos OS | 24.2R1 |
| SRX4600 | Junos OS | 17.4R2 |
| SRX4700 | Junos OS | 24.4R1-S2 |
| SRX5400 | Junos OS | 12.1X46-D10 |
| SRX5600 | Junos OS | 9.2R2 |
| SRX5800 | Junos OS | 9.2R2 |