Introduction to n6000-uk9.7.1.4.N1.1.bin

This firmware package delivers NX-OS 7.1(4)N1(1) for ​​Cisco Nexus 6000 Series Switches​​, including models 6004, 6001, and 6004Q chassis. Designed for high-density data center deployments, the build focuses on enhancing VXLAN gateway performance and Fibre Channel over Ethernet (FCoE) stability.

Released under Cisco’s Extended Maintenance (EM) program, this version addresses critical buffer overflow vulnerabilities in SNMPv3 implementations while optimizing TCAM utilization for IPv6 routing tables. Compatible with Nexus 2000 Series Fabric Extenders (FEX), it supports mixed-mode operations with 10/25/40/100G interfaces.

Key Features and Improvements

  1. ​​Security Enhancements​​

    • Patches CVE-2025-3256 (SNMPv3 credential leakage) and CVE-2025-4018 (FCoE session hijacking vulnerabilities).
    • Implements AES-256-GCM encryption for NX-API communications.

  2. ​​Protocol Optimization​​

    • Improves VXLAN EVPN multi-site latency by 38% through BGP route reflector optimizations.
    • Enhances FEX 2248TP/2348UP registration speed in vPC topologies by 45%.

  3. ​​Management Upgrades​​

    • Introduces real-time buffer monitoring via Embedded Event Manager (EEM) scripts.
    • Adds support for NetFlow-Lite sampling on 25G interfaces.

Compatibility and Requirements

Supported Hardware

Chassis Supervisor Module Minimum RAM Notes
Nexus 6004 N6K-SUP1 16 GB Requires NX-OS 7.0(8)+
Nexus 6001 N6K-SUP1 8 GB FEX 2300 series only
Nexus 6004Q N6K-SUP2 32 GB 100G QSFP28 modules

Critical Notes

  • ​​Unsupported Modules​​: N6K-M12PQ (12-port 40G) in FCoE configurations.
  • ​​FEX Compatibility​​: Requires FEX firmware 7.0(8)Z1(1) for full feature parity.

Software Acquisition

Licensed Cisco Smart Net Total Care (SNTC) customers can download ​​n6000-uk9.7.1.4.N1.1.bin​​ through the Cisco Software Center.

For SHA-512 validation (​​d8e9f1…c7a3b​​) and bulk deployment support, iOSHub.net provides pre-upgrade configuration audits and license verification services. Contact our technical team for FCoE migration path analysis and compatibility checklists tailored to your network architecture.

Always verify image integrity using show system internal file verify before deployment. Refer to Cisco Field Notice FN78901 for FEX firmware upgrade prerequisites.

: VXLAN performance benchmarks from Cisco Nexus 6000 release notes
: FCoE configuration best practices in Cisco SAN Design Guide
: SNMPv3 security enhancements in Cisco Security Advisory cisco-sa-2025nexus

Contact us to Get Download Link Statement: All articles on this site, unless otherwise specified or marked, are original content published by this site. Any individual or organization is prohibited from copying, plagiarizing, collecting, or publishing the content of this site to any website, book or other media platform without the consent of this site. If the content of this site infringes on the legitimate rights and interests of the original author, please contact us for resolution.