to rollout the 15.2(2)E9 image across your fleet. By defining the target image in your , you can automate the verification and copy process: Check existing version to see if the switch is already on 15.2. ios_command to move the file if it's missing from the flash. Compatibility Note
| Symptom | Likely Cause | Solution | | :--- | :--- | :--- | | Switch boots old image | Boot variable not saved or old statement still first | show boot – check BOOT path-list . Use boot system flash: with exact name. | | Crashes or continuous reload | Corrupt image or insufficient DRAM (must be 128MB+) | Perform recovery (Xmodem reload) or use boot flash: from ROMmon. | | CPU high (~99%) after upgrade | Known bug with CDP/LLDP in E4-E5; E9 fixes | Upgrade to E9. If present, disable CDP globally: no cdp run (temporary). | | SSH fails: “No crypto device” | License level (K9) not active | license right-to-use activate ipservices or ensure universalk9 image was loaded. | | Smart Install remains active | Older config has vstack enabled | conf t , no vstack , no vstack setup (patched in E9, but disable anyway). | c2960s-universalk9-mz.152-2.e9.bin
Switch# show version Switch# show boot Switch# show flash | include .bin to rollout the 15
Use (very slow) or ROMmon TFTP :