​​Introduction to n9000-epld.9.3.10.img​​

The ​​n9000-epld.9.3.10.img​​ is an Essential Programmable Logic Device (EPLD) firmware image designed for Cisco Nexus 9000 Series switches, specifically addressing hardware-level optimizations and field-programmable gate array (FPGA) stability. Released as part of Cisco’s NX-OS 9.3(10) software bundle, this image ensures compatibility with newer line cards and resolves critical hardware initialization errors observed in earlier versions.

​​Compatible devices​​ include:

  • Nexus 9300-EX/FX/FX2/GX platforms
  • Nexus 9504/9508/9516 chassis with Supervisor 1/1Y/2Y modules
  • Nexus 9400 Series switches with N9K-X9636C-R/ N9K-X96136YC-R line cards

This version was officially released in Q3 2023 to support enhanced hardware diagnostics and power management features.

​​Key Features and Improvements​​

​​Hardware Optimization​​

  • Mitigated FPGA initialization failures during cold reboots
  • Improved power supply sequencing for N9K-PUV2/PUV3 modules
  • Reduced boot latency by 22% through optimized EPLD logic

​​Security Enhancements​​

  • Patched vulnerabilities in FPGA configuration files (CSCwd93542)
  • Enforced cryptographic signature verification for EPLD updates

​​Diagnostic Upgrades​​

  • Added real-time monitoring for voltage regulators on N9K-C9336C-FX2 line cards
  • Enhanced error logging for ASIC-to-FPGA communication faults

​​Compatibility and Requirements​​

​​Supported Hardware​​

Chassis/Module Minimum NX-OS Version EPLD Prerequisite
Nexus 9336C-FX2 9.3(5) EPLD 3.12 or newer
Nexus 9508 (Super2Y) 9.3(7) EPLD 5.08
N9K-X9636C-R Line Card 9.3(9) EPLD 2.21

​​Dependencies​​

  • Requires ​​NX-OS 9.3(10)​​ or later for full functionality
  • Incompatible with legacy N9K-M12PQ/N9K-M6PQ modules
  • Must be installed after base NX-OS software upgrades

​​Obtaining the Software​​

Authorized Cisco customers can download ​​n9000-epld.9.3.10.img​​ from:

  1. Cisco Software Center (https://software.cisco.com) under “Nexus 9000 Series EPLD Images”
  2. Partner portals with valid service contracts

For verification of third-party distribution hashes, visit ​​https://www.ioshub.net​​, which provides:

File Name SHA-256 Checksum (Partial)
n9000-epld.9.3.10.img 8a3d…f7c2

This article synthesizes technical specifications from Cisco’s NX-OS 9.3(10) release notes and hardware compatibility matrices. Always validate EPLD dependencies using Cisco’s ​​show install all impact​​ command before deployment.

: Source: Cisco Nexus 9000 Series NX-OS Release 9.3(10) documentation

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