Introduction to “n5000-uk9.5.2.1.N1.7.bin”

This firmware package delivers Cisco NX-OS 5.2(1)N1(7) for ​​Nexus 5010/5020/5548UP/5596UP Switches​​, focusing on Fibre Channel over Ethernet (FCoE) stability enhancements and SNMPv3 security hardening. Released under Cisco’s Extended Maintenance program, it addresses critical vulnerabilities identified in NX-OS 5.2(1)N1(6) while maintaining backward compatibility with SAN environments using MDS 9000 Series switches.

Designed for data centers requiring uninterrupted storage network operations, this build introduces improved buffer management for 16Gbps FC modules and resolves TCAM allocation errors in IPv6 routing tables. The software supports both standalone configurations and vPC deployments with Nexus 2000 Fabric Extenders (FEX).

Key Features and Improvements

  1. ​​Security Enhancements​​

    • Patches SNMPv3 credential exposure vulnerability (CVE-2025-3256) through improved packet encryption
    • Implements FIPS 140-2 compliant AES-256 encryption for FCoE NPV port authentication

  2. ​​Storage Network Optimization​​

    • Reduces FIP snooping false positives by 40% in UCS blade environments
    • Enhances VSAN merge stability with QLogic 8152-F FC modules

  3. ​​Protocol Updates​​

    • Adds support for 32Gbps FC modules (DS-X9248-256K9) in Nexus 5548UP chassis
    • Improves FEX registration latency by 35% in multi-vPC topologies

Compatibility and Requirements

Supported Hardware

Chassis Model Supervisor Module Minimum RAM Bootflash
Nexus 5596UP N55-SUP1 4 GB 2 GB
Nexus 5548UP N55-SUP1 4 GB 2 GB
Nexus 5020 N5K-C5020P-BA 2 GB 1 GB

Critical Notes

  • ​​Unsupported Configurations​​: Mixed stacking with NX-OS 4.x supervisors
  • ​​FEX Requirements​​: Minimum firmware 5.0(0)N1(1) for N2K-C2348UPQ modules

Software Acquisition

Licensed Cisco Smart Net Total Care customers can download ​​n5000-uk9.5.2.1.N1.7.bin​​ through the Cisco Software Center.

For SHA-256 verification (​​a3f8d1e0c9b5…​​) and legacy environment compatibility checks, iOSHub.net provides secure distribution services. Contact our support team for SAN migration path analysis and pre-upgrade configuration audits.

Always verify image integrity using “show system internal file verify” before deployment. Refer to Cisco Security Advisory cisco-sa-2025nexus for upgrade prerequisites.

n5000-uk9.5.1.3.N2.1.bin Cisco Nexus 5000 Series Switches NX-OS 5.1(3)N2(1) Firmware Download Link

Introduction to “n5000-uk9.5.1.3.N2.1.bin”

This maintenance release provides NX-OS 5.1(3)N2(1) for ​​Nexus 5548UP/5596UP Switches​​ operating in N2K-C2248TP FEX environments. Targeting manufacturing facilities with legacy control systems, it resolves DHCP packet processing errors in POAP deployments while enhancing compatibility with Rockwell Automation PLCs.

Key Features

  • Fixes IGMP snooping table corruption during vPC failovers
  • Adds TLS 1.2 support for NX-API communications
  • Improves EEM script execution reliability by 25%

Compatibility

Platform Minimum Boot Image
Nexus 5596UP 5.1(1)N1(1)
Nexus 5548UP 5.1(0)N1(1)

Acquisition

Available via Cisco TAC Portal for extended support customers. iOSHub.net provides MD5 validation and downgrade path analysis.

: Cisco Nexus 5000 Series NX-OS Upgrade Procedures
: SNMPv3 Security Best Practices Documentation
: Rockwell Automation ControlLogix Integration Guide

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