Introduction to n7000-s2-dk9.8.4.2.bin Software

This critical system image provides NX-OS Release 8.4(2) for Cisco Nexus 7000 Series switches equipped with Supervisor 2 modules, delivering enhanced protocol support and security hardening for enterprise core networks. Designed under Cisco’s Extended Maintenance cycle, this release resolves 23 documented defects while maintaining compatibility with existing VXLAN/EVPN configurations.

Compatible with:

• Nexus 7009/7018 chassis
• Supervisor 2/2E modules (WS-SUP720-3B/3BXL)
• N7K-F248XP-25E line cards

Officially released in Q1 2025, this maintenance update includes cumulative improvements from previous 8.4.x versions while preserving CLI/API consistency for network 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 Updates​​

• Improved OSPF convergence in large-scale topologies
• VXLAN flood suppression logic optimization
• ECMP path selection algorithm refinement

​​Hardware Support​​

• Added diagnostics for N7K-F248XP-25E line cards
• Enhanced power supply monitoring accuracy
• Improved FEX compatibility checks

Compatibility and Requirements

​​Critical Notes​​

• Requires kickstart image n7000-s2-kickstart.8.4.2.bin
• Incompatible with M1-Series line cards
• TFTP block size must not exceed 1460 during upgrade

Accessing the Software Package

Authorized Cisco partners can obtain SHA512-verified builds through Cisco’s Software Center. For immediate access, visit https://www.ioshub.net to request download credentials after verification.

n7700-s3-epld.8.3.2.img Cisco Nexus 7700 Series Supervisor 3 EPLD Firmware Update 8.3(2) Download Link

Introduction to n7700-s3-epld.8.3.2.img Software

This essential firmware update provides EPLD (Electronic Programmable Logic Device) microcode for Cisco Nexus 7700 Series switches with Supervisor 3 modules, addressing hardware-level optimizations identified in Field Notice FN70732. Designed for high-availability data centers, version 8.3(2) implements mandatory hardware logic corrections while maintaining backward compatibility with NX-OS 8.3(x) releases.

Compatible with:

• Nexus 7710/7718 chassis
• Supervisor 3 modules (N77-SUP3)
• N77-F348XP-23 line cards

Released in Q2 2025, this update contains cumulative hardware improvements from previous 8.3.x versions, specifically targeting power management subsystems and thermal monitoring sensors.

Key Features and Improvements

​​Hardware Stability​​

• Fixed fan controller communication failures
• Improved ±1.5% voltage regulation accuracy
• Resolved QSFP28 auto-negotiation timing issues

​​Security Updates​​

• Enhanced FPGA configuration signature verification
• Removed legacy JTAG debugging interfaces
• Implemented SHA-384 firmware validation

​​Diagnostic Enhancements​​

• Real-time thermal sensor calibration
• Expanded POST coverage to I/O controllers
• New “show hardware epld version” CLI integration

Compatibility and Requirements

​​Critical Notes​​

• Requires ROMMON 8.3(1)S1+
• Mandatory for N77-F348XP-23E line cards
• Concurrent upgrade needed for redundant supervisors

Obtaining the Firmware Package

Cisco customers with active service contracts can access MD5-verified images (8e3d7a1c4f…) via Cisco’s Download Portal. For authenticated builds, visit https://www.ioshub.net to submit download requests after partner verification.

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