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GTP supports unified ISSU between two supported devices running two different Junos OS releases. Unified ISSU is applied on a chassis cluster, enabling a software upgrade between two different Junos OS releases with no disruption on the control plane and with minimal disruption of traffic.
| Product / Application | Software | Introduced Release |
|---|---|---|
| SRX2300 | Junos OS | 23.4R1 |
| SRX4100 | Junos OS | 15.1X49-D80 |
| SRX4120 | Junos OS | 25.2R1 |
| SRX4200 | Junos OS | 15.1X49-D80 |
| SRX4300 | Junos OS | 24.2R1 |
| SRX4600 | Junos OS | 17.4R2 |
| SRX5400 | Junos OS | 12.1X46-D10 |
| SRX5600 | Junos OS | 12.1X46-D10 |
| SRX5800 | Junos OS | 12.1X46-D10 |