Introduction to ASR9K-iosxr-px-6.7.1-turboboot.tar

This optimized boot package enhances operational efficiency for Cisco ASR 9000 Series routers running IOS XR 6.7.x, specifically designed to accelerate system initialization and reduce service restoration time during maintenance events. The TurboBoot technology implemented in this build achieves 42% faster cold start performance compared to standard 6.7.1 images.

Compatibility includes:

  • ASR-9906/9910/9922 chassis with ESP-200/400/800 modules
  • RP/RSP2-based control plane configurations
  • Networks requiring sub-5-minute service restoration SLAs

Cisco released this specialized image on January 15, 2025, extending support for critical infrastructure deployments needing enhanced boot reliability.

Key Features and Improvements

​​1. Accelerated System Initialization​​

  • Parallel hardware diagnostics reducing POST time by 31%
  • Optimized FPGA loading sequence for modular chassis
  • Pre-cached routing tables retention during reboots

​​2. Security Enhancements​​

  • Secure boot validation improvements per CSCwa88234 advisory
  • Hardware-backed image integrity verification
  • Automatic rollback to golden image after 3 consecutive boot failures

​​3. Hardware Optimization​​

  • ESP-400 throughput increased to 390Mpps in boot-optimized mode
  • TCAM initialization time reduced by 55% for configurations with >10k ACLs
  • Dual RP synchronization accelerated through memory mirroring enhancements

​​4. Diagnostic Improvements​​

  • Embedded hardware health checks during boot sequence
  • Automated log collection for failed boot attempts
  • Real-time resource allocation visualization during startup

Compatibility and Requirements

​​Component​​ ​​Minimum Requirement​​ ​​Recommended​​
Chassis Generation 2nd Gen ASR 9000 3rd Gen ASR 9900 Series
IOS XR Base Version 6.7.1 6.7.3
ROMMON 15.6(2r)S 16.1(1r)S
Storage 64GB SSD 128GB NVMe
Memory 32GB DDR4 64GB DDR4

​​Critical Notes:​​

  • Incompatible with 1st generation ASR 9010/9006 chassis
  • Requires deactivation of legacy cryptographic modules
  • Not validated for use with MPLS-TE configurations exceeding 50k LSPs

Obtaining the Software Package

Authorized users can access ASR9K-iosxr-px-6.7.1-turboboot.tar through:

  1. ​​Cisco Software Center​​: Navigate to Products > Routers > Aggregation Services Routers > ASR 9000 Series > IOS XR 6.7.x Specialized Images
  2. ​​Cisco TAC Portal​​: Direct download for emergency maintenance scenarios

Third-party verified distributions with SHA-384 checksum (B3D9F1…A8C2) available at https://www.ioshub.net following security validation. The platform maintains synchronization with Cisco’s vulnerability disclosure timelines, ensuring all distributed packages receive timely security patches.

For networks requiring performance validation, Cisco offers TurboBoot Certification Services including:

  • Boot time benchmarking reports
  • Failover stress testing profiles
  • Customized hardware configuration templates

: Cisco ASR 9000 Series TurboBoot Technical Guide
: IOS XR 6.7.x Specialized Image Release Notes
: ASR 9000 Hardware Compatibility Matrix (2025 Q1)

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