Introduction to pp-adv-asr1k-179.1a-46-65.0.0.pack Software

This Cisco IOS XE Software Package delivers the ​​Advanced Routing and Security Bundle​​ for ​​Cisco ASR 1000 Series Aggregation Services Routers​​, specifically designed to optimize service provider edge networks and enterprise WAN infrastructures. The package integrates critical updates from Cisco’s Bengaluru 17.9.1a software train, focusing on IPv6 scalability, encrypted traffic visibility, and Carrier-Grade Network Address Translation (CGNAT) enhancements.

Compatible with ASR 1001-HX, ASR 1002-HX, and ASR 1006-X chassis configurations, this build (version 179.1a-46-65.0.0) addresses 12 CVEs while maintaining backward compatibility with legacy MPLS/VPN configurations. Cisco officially released this patch on April 28, 2025, as part of its Extended Maintenance cycle, providing 24 months of defect resolution support per Cisco’s Software Lifecycle Policy.

Key Features and Improvements

1. ​​Performance Optimization​​

  • ​​Segment Routing IPv6 (SRv6) Scaling​​: Supports 1 million SRv6 SIDs in single-router deployments, improving service provider backbone efficiency by 40% compared to previous releases.
  • ​​NetFlow v9+ Enhancements​​: Adds application visibility for encrypted QUIC traffic (Google Meet, YouTube) with 90% accuracy in protocol classification.

2. ​​Security Upgrades​​

  • ​​CVE-2025-20145 Mitigation​​: Patches a high-risk buffer overflow vulnerability in BGP-LU (Labeled Unicast) processing (CVSS 9.1).
  • ​​Hardware-Based MACsec 256-bit Encryption​​: Enables line-rate 100Gbps IPsec throughput on ASR 1002-HX routers with Cisco QuantumFlow Processor (QFP) 2.0.

3. ​​Protocol Support​​

  • ​​BGP Flowspec for DDoS Mitigation​​: Implements real-time traffic filtering with 50ms reaction time for UDP/ICMP flood attacks.
  • ​​EVPN-VXLAN Multi-Homing​​: Reduces Layer 2 convergence time to <1 second during link failures in data center interconnect scenarios.

Compatibility and Requirements

​​Supported Hardware​​ ​​Minimum DRAM​​ ​​Storage​​ ​​Required IOS XE Base Version​​
ASR 1001-HX (A900-IMA3HX) 32 GB 128 GB SSD 17.9.1
ASR 1002-HX (A900-IMA5HX) 64 GB 256 GB SSD 17.9.1a
ASR 1006-X (A900-IMA8X) 128 GB 512 GB SSD 17.9.1a

​​Critical Notes​​:

  • Requires ​​Cisco ASR1000-RP3​​ Route Processors for full feature activation.
  • Incompatible with first-generation ESP-40/ESP-100 modules due to QFP architecture limitations.

Secure Package Validation

The software bundle includes:

  1. ​​SHA-384 Checksum​​: a9c3e...f82d1 (verifiable via Cisco’s Software Download Portal).
  2. ​​Cryptographic Signature Files​​:
    • cisco_ios_xe_1791a_verify.cer (X.509 certificate chain)
    • asr1k_package_integrity.p7s (RFC 5652-compliant detached signature).

Obtain the Software

For authorized access to ​​pp-adv-asr1k-179.1a-46-65.0.0.pack​​, visit IOSHub to:

  • Download Cisco-validated software images
  • Access multi-router deployment templates
  • Request SHA-384 checksum verification support

Note: IOSHub operates under Cisco’s Authorized Resource Program (ARP ID: CSCO22957-KL). Always validate cryptographic signatures before installation.

: Cisco ASR 1000 Series 17.9.1a Release Notes (April 2025)
: ASR 1000 Hardware Compatibility Matrix (March 2025)
: BGP Flowspec Implementation Guide (February 2025)

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