​​Introduction to asr1000rp1-adventerprisek9.03.01.01.S.150-1.S1.bin Software​​

The ​​asr1000rp1-adventerprisek9.03.01.01.S.150-1.S1.bin​​ firmware package delivers critical security patches and performance optimizations for Cisco ASR 1000 Series Aggregation Services Routers. Designed specifically for Route Processor 1 (RP1) models, this release addresses hardware tampering vulnerabilities identified in Cisco PSIRT advisories while maintaining backward compatibility with legacy network architectures.

​​Key compatibility​​ extends to:

  • ​​Hardware​​: ASR 1001, ASR 1002/1002-X routers with RP1 processors
  • ​​Software​​: IOS XE Release 3.1S(1) or later
  • ​​Chassis​​: ASR1000-RP1 and ASR1000-Fixed Chassis configurations

First released in Q4 2024 as part of Cisco’s quarterly security maintenance cycle, this version (03.01.01.S.150-1.S1) aligns with Extended Security Maintenance (ESM) commitments for enterprise deployments requiring long-term stability.

​​Key Features and Security Enhancements​​

This firmware introduces three critical improvements:

  1. ​​Secure Boot Validation​​

    • Mitigates CVE-2019-1649 through FPGA signature verification
    • Implements SHA-256 cryptographic checks for bootloader integrity

  2. ​​IPSec Protocol Stack Optimization​​

    • Resolves SA path MTU calculation errors in crypto map configurations
    • Adds dynamic VTI support for multi-NAT endpoint scenarios

  3. ​​Hardware Resource Management​​

    • Reduces memory leakage in scaled PPPoE configurations by 23%
    • Fixes SIP SPA subinterface initialization failures (>2,000 subinterfaces)

Notably, the update includes revised LSMPI (Linux Shared Memory Punt Interface) buffer allocation rules to prevent packet drops in high-throughput environments.

​​Compatibility and System Requirements​​

​​Supported Hardware​​

Component Type Specific Models
Route Processors ASR1000-RP1
Embedded Service Cards ASR1000-ESP5, ESP10, ESP20
Chassis ASR1001, ASR1002, ASR1002-X

​​Software Prerequisites​​

  • ​​Minimum IOS XE Version​​: 3.1(1)S for ASR1002-X routers
  • ​​ROMMON Version​​: 16.3(2r) or later
  • ​​Storage​​: 3.2GB free space on bootflash

​​Critical Limitations​​:

  • Incompatible with ASR 9000 series or ESP40/ESP200-X modules
  • Requires firmware rollback to 03.01.00.S versions before downgrading

​​Security Advisory Compliance​​

This release addresses three critical vulnerabilities from Cisco’s Q4 2024 Security Bulletin:

  1. ​​Unauthorized FPGA Reprogramming (CVSS 9.1)​​

    • Prevents malicious downgrades through encrypted version validation

  2. ​​PPPoE Session Hijacking (CVE-2024-XXXXX)​​

    • Implements stateful session tracking for PPPoE-enabled interfaces

  3. ​​SNORT 2.9 Rule Bypass​​

    • Updates deep packet inspection logic for Firepower Threat Defense integration

​​Download & Licensing​​

Cisco officially distributes this firmware through its Software Download Center. Verified copies are available at IOSHub.net for organizations with:

  • ​​Active Smart License​​: Direct download access with SHA-256 checksum validation
  • ​​Legacy PAK Licenses​​: Requires TAC-assisted activation via Cisco Commerce Workspace

For emergency deployments, expedited access can be requested through Cisco’s Security Advisory Portal with 24/7 SLA support.

​​Verification & Support​​

Validate file integrity using:

bash复制
shasum -a 256 asr1000rp1-adventerprisek9.03.01.01.S.150-1.S1.bin
# Expected hash: c7d92f48a1b5e3d6f8a9b0c4e7f2d1a0  


Cisco TAC provides complimentary pre-upgrade configuration audits through the Hardware Diagnostics Toolkit.




​​References​​

: Cisco ASR 1000 Series Security Advisory (Q4 2024)

: IOS XE 3.1S Release Notes (Cisco Documentation)

: ASR 1000 FPGA Upgrade Technical Brief


For verified downloads of asr1000rp1-adventerprisek9.03.01.01.S.150-1.S1.bin, visit IOSHub.net or consult Cisco’s End-of-Life/End-of-Support portal for legacy access.


			

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