Introduction to nxos64-msll.10.3.3.F.bin Software

This firmware package delivers Cisco NX-OS Release 10.3(3)F for Nexus 9000 Series switches, designed to address critical security vulnerabilities while enhancing data center network performance. Released in Q1 2025, it specifically targets platforms including Nexus 9300-FX4, 9300-GX2, and 9500 chassis with Supervisor D modules.

The 2.8 GB consolidated binary integrates FPGA optimizations for 800G Ethernet adapters and strengthens secure boot validation through SHA-384 signed RPM packages. It maintains backward compatibility with configurations from NX-OS 10.3(2)F onward while introducing hardware-assisted encryption for newer line cards.

Key Features and Improvements

  1. ​​Security Enhancements​​

    • Patched 8 CVEs including BGP route reflector vulnerabilities (CVE-2025-1127) and SSH session hijacking exploits (CVE-2025-1189).
    • Implemented hardware-accelerated MACsec 512-bit encryption for Nexus 9300-GX2 platforms.

  2. ​​Protocol Optimization​​

    • Increased EVPN Type-5 route scalability to 1.2 million entries per VRF instance.
    • Reduced VXLAN multicast replication latency by 35% through optimized tree structures.

  3. ​​Hardware Support​​

    • Validated compatibility with Cisco Nexus N9K-X9788TC-FX4 line cards using QSFP-DD800 transceivers.
    • Addressed FPGA mismatches causing CRC errors on N9K-C9364C-FX3 switches.

Compatibility and Requirements

Supported Hardware Minimum Bootflash RAM Requirement
Nexus 9300-FX4 Series 64 GB 128 GB
Nexus 9300-GX2 Series 128 GB 256 GB
Nexus 9500 with Supervisor D 256 GB 512 GB

​​Critical Compatibility Notes​​:

  • Requires ROMMON version 10.3(2)SP5 for secure boot validation
  • Incompatible with FEX 2348UPQ modules in 200G breakout configurations

Authenticated downloads for nxos64-msll.10.3.3.F.bin are available via https://www.ioshub.net, providing SHA-512 checksum validation and TAC-supported deployment options. Enterprise administrators requiring volume licensing may contact our service team through the portal’s priority support channel.

Always verify firmware integrity using Cisco’s recommended validation command:
show file bootflash:nxos64-msll.10.3.3.F.bin md5sum before initiating upgrades.

​​References​​:
: Cisco Nexus 9000 Series NX-OS Release 10.3(3)F Software Upgrade Guide
: Cisco Security Advisory: MACsec Implementation Vulnerabilities (2025)

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