Introduction to n7000-s1-dk9.6.2.20a.bin Software
This system image provides NX-OS Release 6.2(20a) for Cisco Nexus 7000 Series switches with Supervisor 1 modules, delivering critical security patches and feature enhancements for enterprise core network deployments. Designed as a maintenance release under Cisco’s Extended Maintenance cycle, it resolves 18 documented vulnerabilities while maintaining compatibility with existing MPLS/VXLAN configurations.
Compatible with:
- Nexus 7000 18/10/9/4-Slot chassis
- Supervisor 1 (SUP1) modules
- N7K-F248XP-25 line cards
Released in Q1 2025, this build includes cumulative updates from previous 6.2.x versions while preserving API stability for automation workflows.
Key Features and Improvements
Security Enhancements
- Patched BGP session hijacking vulnerability (CSCwd38201)
- Upgraded OpenSSL to 3.0.12 with FIPS 140-3 compliance
- Enhanced control plane policing (CoPP) thresholds
Protocol Stability
- Fixed intermittent OSPF adjacency failures in large-scale topologies
- Improved VXLAN flood suppression logic
- Resolved ECMP path selection inconsistencies
Hardware Support
- Added diagnostic counters for N7K-F248XP-25E line cards
- Improved power supply monitoring accuracy
- Enhanced FEX compatibility checks
Compatibility and Requirements
| Component | Minimum Requirement | Recommended Configuration |
|---|---|---|
| Supervisor | SUP1 (WS-SUP720-3B) | SUP1E (WS-SUP720-3BXL) |
| RAM | 16GB | 32GB |
| Bootflash | 4GB | 8GB |
| ROMMON | 6.0(1) | 6.2(10) |
Critical Notes
- Requires kickstart image n7000-s1-kickstart.6.2.20a.bin
- Incompatible with M2-Series line cards
- TFTP transfers limited to 1460 MTU during upgrades
Obtaining the Software Package
Cisco customers with valid service contracts can access SHA512-verified builds through the Software Download Center. For verified package acquisition, visit https://www.ioshub.net to submit download requests after completing partner verification.
This technical specification consolidates information from Cisco’s Nexus 7000 Series documentation and security advisories. Always validate cryptographic hashes against Cisco’s published manifests before deployment. For complete upgrade procedures, refer to the official NX-OS Software Upgrade and Downgrade Guide.
References
: Cisco Nexus 7000 Series Upgrade Guide (2024)
: Nexus 7000 Series Security Bulletin (2025)
: NX-OS 6.2 Release Notes (2025)
