Delete old image (keep one backup):
delete /force flash:old-image.bin
squeeze flash:
After downloading the IOS:
Cisco IOS-XE for the ASR 920 generally follows specific release trains. You must decide between: cisco asr 920 ios download
Recommendation: Check the Release Notes (RN) for the version you intend to download. Look for "Caveats" or "Open Bugs" to ensure none of them affect your specific network topology.
Model variations matter. Check your exact hardware: Delete old image (keep one backup): delete /force
| Router Model | Minimum IOS-XE | Recommended Stable | |--------------|----------------|----------------------| | ASR-920-4SZ-A | 3.18.0SP | 16.12.4 | | ASR-920-4SZ-D | 3.16.0 | 16.12.4 | | ASR-920-12CZ-A | 16.6.1 | 16.12.4 or 17.9.x | | ASR-920-24SZ-M | 16.7.1 | 17.9.1a | | ASR-920-24TZ-M | 16.8.1 | 17.9.1a |
Image naming convention explained:
asr920-universalk9_ias.16.12.04.SPA.bin
Some images have _mz suffix – automatically unpacked in memory. After downloading the IOS: Cisco IOS-XE for the
This is where the ASR 920 (running IOS-XE) confuses engineers used to older ISR G2 routers (running IOS).
Delete old image (keep one backup):
delete /force flash:old-image.bin
squeeze flash:
After downloading the IOS:
Cisco IOS-XE for the ASR 920 generally follows specific release trains. You must decide between:
Recommendation: Check the Release Notes (RN) for the version you intend to download. Look for "Caveats" or "Open Bugs" to ensure none of them affect your specific network topology.
Model variations matter. Check your exact hardware:
| Router Model | Minimum IOS-XE | Recommended Stable | |--------------|----------------|----------------------| | ASR-920-4SZ-A | 3.18.0SP | 16.12.4 | | ASR-920-4SZ-D | 3.16.0 | 16.12.4 | | ASR-920-12CZ-A | 16.6.1 | 16.12.4 or 17.9.x | | ASR-920-24SZ-M | 16.7.1 | 17.9.1a | | ASR-920-24TZ-M | 16.8.1 | 17.9.1a |
Image naming convention explained:
asr920-universalk9_ias.16.12.04.SPA.bin
Some images have _mz suffix – automatically unpacked in memory.
This is where the ASR 920 (running IOS-XE) confuses engineers used to older ISR G2 routers (running IOS).