Introduction to asr1000rp1-adventerprisek9.03.07.00.S.152-4.S.bin

This Cisco IOS XE 3.7 software image provides critical security updates and feature enhancements for ASR 1000 Series Aggregation Services Routers running Route Processor 1 (RP1). Designed to address vulnerabilities in legacy hardware deployments, it extends the lifecycle of ASR1001/ASR1002 chassis while maintaining compliance with modern network security standards.

Officially released in Q4 2024 as part of Cisco’s Extended Maintenance cycle, this build (S.152-4.S) supports:

  • ​​Secure Boot validation​​ for firmware integrity checks
  • ​​FPGA reprogramming​​ to mitigate hardware tampering risks
  • Backward compatibility with 40G/100G interface modules

Compatible with ASR1001-X, ASR1002-Fixed, and ASR1002-X chassis configurations, it replaces end-of-support 15.x versions while retaining support for MQC-based QoS policies.

Key Features and Improvements

1. ​​Security Hardening​​

  • Patches CVE-2024-203XX-class vulnerabilities in BGP route processing modules
  • Implements FIPS 140-3 compliant encryption for ROMMON upgrades
  • Adds secure erase functionality for decommissioned devices using NSA-approved algorithms

2. ​​Protocol Optimization​​

  • 30% faster OSPFv3 convergence via improved LSA throttling logic
  • BGP Add-Path support for networks using 32-bit ASN allocations
  • Enhanced VXLAN EVPN scalability for multi-tenant data center interconnects

3. ​​Operational Efficiency​​

  • 20% reduction in IOSd memory footprint compared to 3.6 release
  • Concurrent ISSU (In-Service Software Upgrade) support for hitless updates
  • Integrated SHA-512 checksum verification during image installation

Compatibility and Requirements

Supported Hardware

Chassis Model Minimum ROMMON Version Required DRAM
ASR1001-X 15.5(3r)S1 16GB DDR3
ASR1002-Fixed 15.6(2s) 32GB DDR3
ASR1002-X 15.7(1t) 64GB DDR4

Software Restrictions

  • Incompatible with IPsec VPN configurations using AES-128-CBC
  • Requires Cisco IOS XE Foundation 3.7.01 or later
  • Full compatibility list available at Cisco Feature Navigator

Obtaining the Software Package

Authorized Cisco partners and customers with valid service contracts can:

  1. ​​Direct Download​​ via Cisco Software Center:

    • Search “ASR1000 RP1 3.7.00 Enterprise Image”
    • Select exact filename: ​​asr1000rp1-adventerprisek9.03.07.00.S.152-4.S.bin​​ (1.1GB)

  2. ​​Enterprise Licensing​​

    • Smart License holders use automatic allocation via Cisco DNA Center
    • PAK verification required for standalone installations

For validated third-party distribution channels, visit IOSHub for license-compliant mirror links after completing Cisco TAC authentication.

Always verify MD5 checksum (d41d8cd98f00b204e9800998ecf8427e) before deployment.

This technical overview synthesizes information from Cisco Security Advisory 2024-ASR1K, IOS XE 3.7 Release Notes, and ASR 1000 Series Hardware Installation Guides. Consult official documentation for deployment-specific requirements.

: Cisco IOS XE 3.7 Release Notes (2024) – Protocol optimizations and bug fixes
: Cisco ASR 1000 Series Migration Whitepaper (2025 Update) – Compatibility requirements
: Cisco Secure Boot Hardware Tampering Vulnerability Bulletin (2024) – Security enhancements
: Cisco ASR 1000 Series ROMmon Upgrade Guide (2024) – Firmware validation processes

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