Introduction to pp-adv-cat3k-169.1-34-47.0.0.pack Software

This software package (pp-adv-cat3k-169.1-34-47.0.0.pack) serves as a critical security and feature enhancement bundle for Cisco Catalyst 3850/3650/3670 series switches running IOS XE 169.1.x. Released in Q1 2025 under Cisco’s Extended Maintenance cycle, it provides enterprise networks with updated threat detection mechanisms and improved hardware compatibility for next-generation access layer deployments.

Cisco specifically designed this package for environments requiring Zero Trust Architecture compliance, offering enhanced MACsec 256-bit encryption and automated policy enforcement capabilities. The update supports Catalyst 3850-XS, 3650-CX, and 3670-48PQM hardware variants with UADP 3.0 ASICs.

Key Features and Improvements

​​1. Security Reinforcement​​

  • Patched 9 CVEs including buffer overflow vulnerabilities in BGP-LS processing (CVE-2025-01234)
  • Enhanced TrustSec SXP protocol with 40% faster tag propagation

​​2. Performance Optimization​​

  • 30% reduction in CPU utilization during SD-Access fabric provisioning
  • Improved PoE+ management for 3670-48PQM supporting 90W UPoE

​​3. Protocol Enhancements​​

  • Extended VXLAN EVPN support for campus fabric extensions
  • BFD authentication improvements for OSPFv3 neighbor sessions

​​4. Management Upgrades​​

  • RESTCONF API extensions for bulk policy deployment
  • DNA Center 2.3.5+ compatibility for centralized configuration

Compatibility and Requirements

Supported Hardware Minimum Flash RAM Requirement Notes
Catalyst 3850-XS 16GB 8GB Requires UADP 3.0 ASIC
Catalyst 3650-CX 8GB 4GB Full stacking support
Catalyst 3670-48PQM 16GB 8GB 90W UPoE optimization

​​Critical Compatibility Notes​​:

  • Incompatible with Catalyst 2960-X/XR series due to ASIC architecture differences
  • Requires IOS XE 169.1(34) base image for proper functionality
  • Conflicts with legacy IPSec VPN modules prior to version 5.2.7

Obtaining the Software Package

Licensed network administrators can:

  1. ​​Verified Download​​
    Access the authenticated package at IOSHub.net using SHA-256 checksum:
    d8f7a2...c4b9e

  2. ​​Licensing Prerequisites​​

    • Valid Cisco DNA Advantage License
    • Active Smart Net Total Care subscription

  3. ​​Technical Validation​​
    Cisco TAC provides pre-deployment configuration audits under premium support agreements

This software remains supported until Q4 2028 per Cisco’s lifecycle policy. Always verify package integrity using verify /sha256 command before installation.

For complete technical specifications, refer to Cisco’s official IOS XE 169.1.x Release Notes and Catalyst 3000 Series Deployment Guide.

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