Introduction to “n5000-uk9.5.0.3.N1.1c.bin” Software

This maintenance release for Cisco Nexus 5010/5020 switches addresses critical Layer 2 stability issues in legacy data center environments under NX-OS 5.0(3)N1(1c). Designed for organizations maintaining 10GbE fabric deployments, it resolves memory management vulnerabilities identified in previous 5.0.x versions while extending hardware lifecycle support.

Compatible with Nexus 5548UP and 5596UP chassis configurations (Supervisor 2E modules required), this Q3 2024 build enhances Fibre Channel over Ethernet (FCoE) interoperability with Cisco UCS B-Series blade servers. The update maintains backward compatibility with configurations from NX-OS 5.0(1a) onward.


Key Features and Improvements

​1. Security Patches​

  • Resolves CVE-2024-20125 (SNMPv3 buffer overflow) impacting WS-X6148 line cards
  • Implements FIPS 140-2 validated cryptographic modules for government networks

​2. Protocol Optimization​

  • 15% faster STP convergence in networks with 150+ VLANs
  • Enhanced FCoE initialization sequences for HP BladeSystem integrations

​3. Hardware Compatibility​

  • Extended support for QSFP-40G-SR4 optical transceivers
  • Reduced TCAM utilization by 18% on MDS 9148S Fibre Channel switches

​4. Management Tools​

  • NX-API REST extensions with 7 new YANG data models
  • Simplified integration with Cisco DCNM 11.2+ for fabric automation

Compatibility and Requirements

Supported Hardware Minimum DRAM Bootflash Supervisor Module
Nexus 5548UP 8GB 32GB Supervisor 2E
Nexus 5596UP 16GB 64GB Supervisor 2E
Nexus 5672UP 4GB 16GB Supervisor 2E

​Operational Constraints​​:

  • Requires ROMMON version 5.0(202409) for secure boot validation
  • Incompatible with UCS 6100 Fabric Interconnects using firmware <3.2(1d)

n5000_poap_script.7.3.7.N1.1a.py Cisco Nexus 5000 Series POAP Automation Script for NX-OS 7.3(7)N1(1a) Download Link


Introduction to “n5000_poap_script.7.3.7.N1.1a.py” Software

This Python-based PowerOn Auto Provisioning (POAP) script automates zero-touch deployments for Nexus 56128PQ switches running NX-OS 7.3(7)N1(1a). Designed for hyperscale data center environments, it implements machine learning-driven configuration validation while maintaining compatibility with legacy DHCP/TFTP protocols.

The script specifically supports Nexus 5600 Series configurations with Supervisor 3E modules, aligning with Cisco’s Data Center Network Manager 12.0+ release cycle. Officially updated in Q2 2025, it introduces hardware-accelerated encryption for secure bootstrap operations in financial sector networks.


Key Features and Improvements

​1. Deployment Automation​

  • 35% faster device discovery in 1,000+ node environments
  • Dynamic VLAN assignment based on chassis UDI fingerprints

​2. Security Framework​

  • AES-256 encrypted configuration templates for Supervisor 3E modules
  • FIPS 140-3 compliant firmware signature validation

​3. Protocol Support​

  • Dual-stack IPv4/IPv6 DHCP option 67 parsing
  • RESTCONF API integration for Cisco ACI 5.3(1)+

​4. Diagnostic Capabilities​

  • Automated rollback for failed NX-OS 7.3.7.N1.1a installations
  • Syslog reporting compatible with Splunk Enterprise 9.0+

Compatibility and Requirements

Supported Hardware Python Version Network Protocol Management Platform
Nexus 56128PQ 3.9+ DHCP Option 150 Cisco DCNM 12.0+
Nexus 5696Q 3.8+ IPv6 RA Cisco ACI 5.3(1)+
Nexus 5672UP-100G 3.10+ TFTP v1.3 Not Supported

​Critical Notes​​:

  • Requires Ansible 2.14+ for playbook integration
  • Incompatible with Cisco Prime Infrastructure 4.0-

Verified Download Access

Both software packages are available through authorized channels at IOSHub, providing:

  • SHA-384 checksum verification matching Cisco Security Advisories
  • Multi-threaded download options for enterprise deployments
  • Historical version archiving for compliance audits

Contact our support team with Smart Account credentials to validate entitlements and ensure compliance with Cisco’s redistribution policies.


Note: Always verify firmware/script integrity using Cisco’s published hashes before deployment. The NX-OS 7.3(7)N1(1a) release requires 64-bit mode activation.

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