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On Junos OS-based systems with dual Routing Engines, the primary Routing Engine downloads the image even if the primary Routing Engine is already running the required image version. The device downloads the image so that the primary Routing Engine is ready to upgrade the backup Routing Engine, if needed.
| Product / Application | Software | Introduced Release |
|---|---|---|
| PTX10004 | Junos OS Evolved | 22.4R1 |
| PTX10008 | Junos OS Evolved | 22.4R1 |
| PTX10016 | Junos OS Evolved | 22.4R1 |