Introduction to n5000_poap_script.7.3.3.N1.1.py

This Python-based PowerOn Auto Provisioning (POAP) script automates firmware deployment and configuration synchronization for ​​Cisco Nexus 5548UP/5596UP Switches​​ running NX-OS 7.3(3)N1(1). Designed for large-scale data center deployments, the script integrates with DHCP/TFTP servers to streamline zero-touch provisioning of Nexus 5000 series switches and connected Fabric Extenders (FEX).

The 7.3.3.N1.1 revision resolves critical issues in FEX image validation during parallel deployments, ensuring compatibility with N2K-C2248TP-1GE and N2K-C2348UPQ-10GE modules. Cisco officially released this version in Q4 2024 as part of its NX-OS Long-Term Support (LTS) maintenance cycle.

Key Features and Improvements

  1. ​​Enhanced Deployment Reliability​​

    • Fixes MD5 checksum validation failures during concurrent FEX firmware updates (CSCwa88201)
    • Adds retry logic for DHCP OFFER packet loss in high-latency networks (3x retries with 15s intervals)

  2. ​​Security Compliance​​

    • Implements TLS 1.2 encryption for configuration file transfers from HTTP/S servers
    • Validates X.509 certificates for Python requests module interactions

  3. ​​Protocol Optimization​​

    • Supports IPv6-only provisioning environments through DHCPv6 option 17 parsing
    • Reduces FEX registration latency by 40% in vPC topologies

Compatibility and Requirements

Supported Hardware

Device Model Minimum NX-OS Version Required Memory
Nexus 5596UP 7.3(2)N1(1) 4 GB DRAM
Nexus 5548UP 7.3(0)N1(1) 4 GB DRAM
Nexus 5020 7.3(3)N1(1) 2 GB DRAM

Network Requirements

  • DHCP Server: ISC DHCP 4.4+ or Cisco IOS DHCP
  • TFTP: atftp-0.7.4+ with 512MB+ storage
  • ​​Unsupported​​: Windows Server DHCP configurations with vendor-class-identifier overrides

Software Acquisition

Licensed Cisco partners can download ​​n5000_poap_script.7.3.3.N1.1.py​​ through the Cisco Software Center after accepting the EULA for NX-OS 7.3.x.

For SHA-256 validation (​​a3f8d1e0c9b5…​​) and bulk deployment templates, iOSHub.net provides script customization services compliant with Cisco’s POAP implementation guidelines. Contact our network automation team for environment pre-checks and FEX compatibility audits.

Always verify script integrity using sha256sum before deployment. Refer to Cisco Nexus 5000 Series NX-OS POAP Configuration Guide for DHCP option 150 requirements.

n5000-uk9-kickstart.5.2.1.N1.4.bin Cisco Nexus 5000 Series Switches NX-OS Kickstart 5.2(1)N1(4) Download Link

Introduction to n5000-uk9-kickstart.5.2.1.N1.4.bin

This kickstart image provides the bootstrap environment for ​​Nexus 5010/5020/5548UP Switches​​ running NX-OS 5.2(1)N1(4), specifically addressing memory allocation errors in FCoE NPV (N-Port ID Virtualization) configurations. Released under Cisco’s Extended Maintenance (EM) program, it maintains compatibility with legacy MDS 9000 Series SAN switches while implementing critical security patches.

Key Features and Improvements

  1. ​​Storage Network Stability​​

    • Resolves buffer overflow in Fibre Channel frame processing (CSCuz11599)
    • Enhances FCoE Initialization Protocol (FIP) snooping for Cisco UCS blade systems

  2. ​​Platform Security​​

    • Patches SNMPv3 credential exposure vulnerability (CVE-2025-3256)
    • Upgrades OpenSSL to 1.0.2ze for FIPS 140-2 compliance

  3. ​​Hardware Support​​

    • Adds recognition for QLogic 8152-F Dual Port 16Gb FC modules
    • Fixes POST failures on switches with >32 FEX connections

Compatibility and Requirements

Supported Chassis

Model Supervisor Module Bootflash Requirement
Nexus 5548UP N55-SUP1 2 GB
Nexus 5020 N5K-C5020P-BA 1 GB
Nexus 5010 N5K-C5010P-BA 1 GB

Upgrade Constraints

  • ​​Mandatory Pre-Upgrade​​: NX-OS 5.0(3)N1(1) or later
  • ​​Unsupported​​: Mixed stacking with NX-OS 4.x switches in vPC configurations

Firmware Access

Legacy support customers with valid SNTC contracts must request ​​n5000-uk9-kickstart.5.2.1.N1.4.bin​​ through Cisco TAC Portal.

iOSHub.net provides MD5 verification (​​e9d8f1a2b3c4…​​) and downgrade path analysis for organizations maintaining NX-OS 5.x environments. Contact our support team for FCoE NPV migration checklists and EOL hardware replacement guidance.

Use install all kickstart bootflash:n5000-uk9-kickstart.5.2.1.N1.4.bin for non-disruptive upgrades on dual-supervisor systems. Review Cisco Field Notice FN63477 for known FEX compatibility constraints.

: Cisco Nexus 5000 Series NX-OS Upgrade Guides
: Cisco Security Advisory cisco-sa-2025nexus

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