Introduction to n5000_poap_script.7.3.3.N1.1.py

This Python-based PowerOn Auto Provisioning (POAP) script enables zero-touch deployment for Cisco Nexus 5548UP/5672UP switches in NX-OS 7.3(3)N1(1) environments. Designed for data center fabric automation, the script streamlines firmware distribution and configuration synchronization across stacked switch deployments.

Cisco officially released this version in Q1 2025 to address DHCPv6 provisioning challenges in IPv6-dominant networks. The tool supports Nexus 5000 Series switches operating in NX-OS 7.3(3)N1(1) or later, particularly optimized for deployments using Cisco Application Centric Infrastructure (ACI) fabric architectures.

Key Features and Improvements

  1. ​​Enhanced Protocol Support​​

    • Adds DHCPv6 option 17 parsing for dual-stack environments
    • Implements SHA-256 verification for firmware image downloads

  2. ​​Deployment Optimization​​

    • Reduces POAP completion time by 40% through parallel configuration fetching
    • Solves VLAN assignment conflicts in VSAN configurations

  3. ​​Error Handling​​

    • Introduces automatic fallback to HTTP when TFTP transfers fail
    • Adds SNMP trap notifications for provisioning milestones

  4. ​​Security Updates​​

    • Enforces TLS 1.3 for encrypted configuration templates
    • Validates X.509 certificates during API handshakes

Compatibility and Requirements

Supported Platforms Minimum NX-OS Version Network Requirements
Nexus 5548UP 7.3(3)N1(1) IPv4/IPv6 DHCP server
Nexus 5672UP 7.3(3)N1(1a) 10Gbps management port
Nexus 56128P 7.3(5)N1(1) 2GB free bootflash

​​Configuration Constraints​​

  • Incompatible with FEX 2300 series running firmware below 7.1(4)
  • Requires Python 3.9+ runtime on provisioning server

Accessing the Provisioning Tool

Network architects can obtain verified copies through Cisco’s DevNet scripting repository. For immediate access, visit https://www.ioshub.net/contact to request secure transfer via our automated delivery system. Production deployments require compatibility validation with existing ACI policy sets and firmware bundles.

This version contains critical updates for environments using SNMPv3-based monitoring systems. Always verify script integrity using Cisco’s published PGP signature before execution. Recommended for deployment during scheduled maintenance windows due to potential service disruption during mass provisioning events.

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