Introduction to nxos64-cs.10.3.2.F.bin Software
This firmware package delivers Cisco NX-OS Release 10.3(2)F for Nexus 9000 Series switches, specifically optimized for -EX, -FX, and -GX platforms in enterprise data center environments. As documented in Cisco’s release notes, this build addresses critical security vulnerabilities while introducing performance upgrades for 400G interface configurations. The “cs” designation confirms compatibility with both fixed and modular chassis models running standalone NX-OS deployments.
Key Features and Improvements
Security Enhancements
- Patches CVE-2024-20351 buffer overflow vulnerability in TCP/IP stack implementation
- Enables FIPS 140-3 compliance for government-grade encryption standards
Hardware Optimization
- 25% throughput increase on Nexus 9336C-FX2 switches with 400G QSFP-DD interfaces
- Enhanced ASIC utilization for VXLAN routing tables (supports 1M+ entries)
Automation Upgrades
- Integrates Python 3.10 runtime for NX-API DevOps workflows
- Expands YANG data models for EVPN multihoming configurations
Compatibility and Requirements
| Supported Hardware | Minimum NX-OS Version | Memory Requirement |
|---|---|---|
| Nexus 9300-FX3 | 10.2(5)M | 16GB RAM |
| Nexus 9508-R2 | 10.3(1)F | 64GB RAM |
| Nexus 9808 | 10.3(1)F | 128GB RAM |
Critical Notes
- Incompatible with ACI-mode switches running 16.0(x) releases
- Requires BIOS 3.21.7a+ for Nexus 9300-GX platforms
Software Acquisition Channels
Cisco officially distributes this firmware through the Cisco Software Center to customers with active service contracts. For evaluation purposes, https://www.ioshub.net provides verified SHA-512 checksums and secure download options. Production deployments must obtain licenses through Cisco’s Smart Account portal to maintain technical support eligibility.
When requesting TAC assistance, reference the release-specific advisory CSCwh88275 for expedited resolution. The package includes PGP signature verification through Cisco’s established PKI infrastructure.
This article synthesizes technical specifications from Cisco’s NX-OS 10.3(2)F release documentation and hardware compatibility guides. Always validate configurations against Cisco’s latest security advisories before deployment.
