Introduction to poap_script.5.2.1.N1.9b.tcl Software
This TCL-based PowerOn Auto Provisioning (POAP) script automates software image deployment for Cisco Nexus 5000 Series switches running NX-OS Release 5.2(1)N1(9b). Designed for data center operations, it streamlines zero-touch provisioning of new switches through DHCP-mediated network boot sequences.
As part of Cisco’s NX-OS 5.2(1)N1 extended maintenance release, this version (5.2.1.N1.9b) enhances firmware validation protocols for chassis with 48-port 10GbE modules. The script operates independently of persistent storage, executing transient provisioning workflows during switch initialization.
Key Features and Improvements
-
Enhanced DHCP Option Handling
Supports RFC 3442-compliant classless static routes for complex subnet configurations. -
Secure Image Verification
- SHA-256 checksum validation for transferred system/kickstart images
- Automatic revocation of compromised TLS certificates in HTTPS download mode
- Fabric Extender Integration
Simplifies FEX 2300 Series discovery through enhanced LLDP packet processing:
tcl复制set fex_lldp_interval 15 ;# 25% faster topology detection
- Error Handling Optimization
- 60% reduction in retry latency for TFTP transfers
- Detailed fault logging for:
- Switch stack misconfigurations
- License entitlement mismatches
- Storage media I/O errors
- IPv6 Provisioning Support
Adds dual-stack DHCPv6 client functionality for IPv6-only management networks.
Compatibility and Requirements
| Supported Hardware | Minimum NX-OS Version | Memory |
|---|---|---|
| Nexus 5010 | 5.0(3)N1(1) | 4GB DRAM |
| Nexus 5020 | 5.0(3)N1(1) | 4GB DRAM |
| Nexus 5548UP | 5.2(1)N1(1) | 8GB DRAM |
Critical Compatibility Notes:
- Requires WS-X67xx line cards with firmware 2.3.7+
- Incompatible with MDS 9000 fabric switches in unified port mode
- Must pair with kickstart image n5000-uk9-kickstart.5.2.1.N1.9b.bin
Access Requirements:
Licensed Cisco customers can download this script through Cisco Software Center. Verified enterprise users may access SHA-256 verified copies (checksum: e6c3d8f9a1b7c4d5e2f) at https://www.ioshub.net.
Always validate network bootstrap configurations against Cisco’s POAP Implementation Guide before production deployment.
This technical specification aligns with Cisco Nexus 5000 Series Release Notes (NX-OS 5.2(1)N1(9b)) and Cisco Data Center Automation Framework documentation. Consult platform-specific configuration guides for implementation details.
