and 3000 series switches running Cisco NX-OS Release 9.3(8) . This release, made available on , introduced critical features and security fixes, including the Secure Boot Hardware Tampering vulnerability remediation for specific platforms. 1. Key Information Release Date: August 6, 2021. Primary Application: Data center switches ( Cisco Nexus 9000 and 3000 series).
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| Preparation Task | Details | |----------------|---------| | | Verify the exact Nexus model (e.g., N9K‑C9232C, N3K‑C3048TP‑1GE) as the image must be compatible with the hardware platform. | | Current NX‑OS version | Run show version on the switch to know the starting release. Check the upgrade matrix to confirm that a direct upgrade to 9.3.8 is supported. | | Service contract status | Confirm that your Cisco service contract is active and linked to your Cisco.com profile. | | Backup configuration | Before any upgrade, always backup the running configuration ( copy running-config bootflash:backup-config ) and also copy it to an external SCP or TFTP server. | | Network connectivity | Ensure your management workstation has access to software.cisco.com and that you have sufficient bandwidth to download the approximately 500–800 MB image. |
After the system initializes, log back in and confirm the platform is operational under the targeted release code. nxos.9.3.8.bin download
Verify if your current running version supports an In-Service Software Upgrade (ISSU) directly to 9.3(8). If your current version is significantly older, you may need a stepping-stone upgrade to an intermediate version before applying 9.3(8). 2. Perform a Comprehensive Backup
Log in using your registered .
: Verify if your current NX-OS version allows a direct ISSU (In-Service Software Upgrade) to 9.3(8), or if an intermediate hop is required. and 3000 series switches running Cisco NX-OS Release 9
The air in the data center was a steady, chilled hum, the kind of white noise that usually lulled Senior Network Engineer Elias Thorne
: Use SCP or FTP to move the file to the switch's bootflash:
| Practice | Why It Matters | |----------|----------------| | | Prevents corrupted images from being installed. | | Run show install all impact before upgrading | Catches configuration incompatibilities before they cause a failure. | | Back up the running configuration | Provides a recovery path if the upgrade goes wrong. | | Upgrade vPC peers one at a time | Maintains network redundancy during the maintenance window. | | Keep the previous image for a short period | Allows quick fallback to the known‑good version. | | Read the release notes thoroughly | Understands new features, resolved bugs, and any special upgrade requirements. | | Test in a lab environment first | Validates that the upgrade works correctly with your specific configuration and hardware. | | Plan a maintenance window | Even “non‑disruptive” upgrades can have unexpected impact; always plan for disruption. | Key Information Release Date: August 6, 2021
Once the switch completes its reload sequence, log back in to verify the running version.%%MAGIT_PARSER_PROTECT%% switch# show version 6. Key Release Notes and Resolved Issues in 9.3(8)
A: No. The Nexus 1000v virtual switch uses a completely different image (VSM/VEM). Do not attempt.
Choosing to use NX-OS 9.3.8 comes down to a few key factors:
Your work isn't done once the switch reloads. You should perform these final checks:
The following high-level steps are used to install the nxos.9.3.8.bin image:
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