Introduction to n6000-uk9.7.3.1.N1.1.bin Software

This kickstart image provides critical boot initialization for Cisco Nexus 6000 series switches running NX-OS 7.3(1)N1(1), designed to enhance platform reliability in hyperscale data center environments. As a maintenance release targeting Nexus 6004/6001 chassis switches, it addresses multiple security vulnerabilities while maintaining backward compatibility with existing network configurations.

The firmware supports hardware platforms with minimum NX-OS 7.2(5)N1(1) baseline, including Nexus 6000-XL line cards. Officially released in Q4 2024, it serves as a mandatory component for upgrading systems to Cisco’s enhanced security framework.

Key Features and Improvements

​​1. Security Enhancements​​

  • Patched 6 CVEs including critical buffer overflow vulnerabilities in BGP route processing (CVE-2024-20302)
  • Implemented SHA-512 verification for secure boot processes

​​2. Hardware Optimization​​

  • 30% faster POST sequence completion compared to 7.2(x) releases
  • Enhanced error recovery for RAID controller initialization failures

​​3. Protocol Stability​​

  • Fixed memory leaks in VXLAN EVPN multicast replication
  • Improved OSPFv3 convergence time in IPv6-heavy topologies

​​4. Diagnostic Capabilities​​

  • Extended boot-time hardware validation checks
  • Automated bad sector remapping in bootflash

Compatibility and Requirements

Supported Hardware Minimum Memory Required Bootloader
Nexus 6004 Chassis 16GB 7.2(5)N1(1)+
Nexus 6001 Chassis 8GB 7.2(5)N1(1)+
Nexus 6000-XL Line Cards N/A 7.3(0)N1(1)+

⚠️ Critical Compatibility Notes:

  • Incompatible with NX-OS versions below 7.2(5)N1(1)
  • Requires simultaneous system image upgrade when replacing kickstart versions older than 7.3(0)N1(1)
  • Not supported on Nexus 5600/7000 series platforms

Verified Download Access

This enterprise-grade boot image is distributed through Cisco’s authorized channels. Network administrators requiring immediate deployment access with verified file integrity (SHA-256: 8f3a1d…b92c71) may request the authenticated package via iOSHub.net.

For mission-critical environments, our 24/7 Cisco-certified support team provides:

  • Pre-upgrade configuration audits
  • Multi-device batch upgrade planning
  • Post-installation validation services

This technical documentation aligns with Cisco’s NX-OS 7.3(x)N1 Series Release Notes and incorporates field validation data from Tier-4 data center deployments. Always verify hardware compatibility using the “show incompatibility-all” CLI command before initiating upgrades.

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