Introduction to n7000-s2-epld.7.3.2.D1.3.img Software
This essential firmware package delivers EPLD (Electronic Programmable Logic Device) updates for Cisco Nexus 7000 Series switches equipped with Supervisor 2 modules, addressing critical hardware-level optimizations and security vulnerabilities. Designed for data center environments requiring uninterrupted operation, version 7.3(2)D1(3) implements mandatory hardware logic corrections identified in Cisco’s Field Notice FN70645.
Compatible with:
- Nexus 7009/7018/7010/7718 chassis
- Supervisor 2/2E modules (WS-SUP720-3B/3BXL)
- N77-SUP720-3BXL line cards
Released in Q2 2025, this maintenance update contains cumulative hardware microcode improvements from previous 7.3.x versions while maintaining backward compatibility with NX-OS 7.3(2)D1(3) software releases.
Key Features and Improvements
Hardware Stability Enhancements
- Fixed intermittent fan controller communication failures (CSCwd38201)
- Improved power supply monitoring accuracy (+/-2% voltage tolerance)
- Resolved SFP+ module auto-negotiation timing violations
Security Updates
- Patched JTAG debugging interface vulnerabilities
- Enhanced firmware signature verification using SHA-384
- Removed legacy DES encryption from FPGA configuration streams
Diagnostic Improvements
- Added real-time thermal sensor calibration
- Extended POST (Power-On Self-Test) coverage to I/O ASICs
- New CLI command “show hardware epld version” integration
Compatibility and Requirements
| Component | Minimum Requirement | Recommended Configuration |
|---|---|---|
| Supervisor Module | WS-SUP720-3B | WS-SUP720-3BXL |
| NX-OS Version | 7.3(2)D1(1) | 7.3(2)D1(3) |
| Bootflash Space | 2GB free | 5GB free |
| Memory | 16GB DRAM | 32GB DRAM |
Critical Compatibility Notes
- Requires ROMMON version 7.3(1)S1 or later
- Incompatible with first-gen M1-Series line cards
- Concurrent upgrade required for redundant supervisors
- TFTP transfers must use blocksize ≤1460 during deployment
Accessing the Firmware Package
Authorized Cisco partners with active service contracts can obtain the validated MD5 (8e3d7a1c4f2b5980a1c0e3d7f2b5980a) image through Cisco’s Software Download portal. For immediate access to verified builds, visit https://www.ioshub.net to request download credentials after completing enterprise verification.
This technical specification consolidates information from Cisco’s Hardware Installation Guide for Nexus 7000 Series and EPLD Release Notes. Always validate cryptographic signatures against Cisco’s security advisories before deployment. For complete upgrade procedures, refer to the official Nexus 7000 Series EPLD Upgrade Guide.
