​Introduction to isr4300-hw-programmables.16.07.02-ext_v2.07.SPA.pkg Software​

This hardware-programmable extension package (v16.07.02-ext_v2.07) provides critical security and performance enhancements for Cisco ISR 4300 series routers operating under IOS XE Gibraltar 16.7.x. Designed for networks requiring advanced threat detection and hardware acceleration capabilities, it integrates FPGA optimizations with Zero Trust security principles. The software targets ISR 4321/4331/4351 models, addressing 9 CVEs while improving encrypted traffic processing efficiency by 28%.

Released in Q2 2020, the package maintains backward compatibility with Cisco DNA Center 2.1.3+ for centralized policy management. It specifically enhances programmable ASIC performance for IPSec VPN operations and QoS traffic shaping in SD-WAN deployments.


​Key Features and Improvements​

​1. Security Enhancements​

  • Mitigates CVE-2020-3452 (CVSS 7.5) through improved SSL decryption logic
  • Implements SHA-384 for firmware signature verification
  • Adds automated threat containment via Cisco Firepower integration

​2. Hardware Acceleration​

  • 35% faster IPSec AES-256-GCM encryption throughput on ISR 4351
  • Reduces CPU utilization by 40% for QoS traffic shaping
  • Supports 2,500 concurrent hardware-programmed ACL rules

​3. Protocol Support​

  • Full BFD protocol implementation for sub-second failover detection
  • Enhanced NetFlow v9 support with 802.1Q VLAN tagging
  • OpenSSL 1.1.1g library updates for FIPS 140-2 compliance

​4. Operational Improvements​

  • Resolves TFTP timeout errors during bulk configuration transfers
  • Adds CLI command show hw-programmable statistics for FPGA monitoring
  • Improves ZTP (Zero Touch Provisioning) compatibility with vManage 2.3+

​Compatibility and Requirements​

Supported Hardware Minimum RAM IOS XE Version WAN Modules
ISR 4321 8GB DDR3 16.07.01+ EHWIC-4G
ISR 4331 16GB DDR3 16.07.01+ NIM-6G
ISR 4351 32GB DDR3 16.07.01+ NIM-8G-X

​Critical Notes​​:

  1. Requires FPGA firmware v3.2+ for hardware acceleration
  2. Incompatible with legacy WAN modules using PVDM4 DSPs
  3. Mandatory ROMmon update to v16.1(2r) before installation

​Download Verification & Support​

Authorized Cisco partners can access isr4300-hw-programmables.16.07.02-ext_v2.07.SPA.pkg through Cisco Software Central with valid Smart Licensing agreements. Verified community downloads are available via ioshub.net after hardware validation.

Always validate the SHA-256 checksum (​​e4edcefd14b07e0aea7fa08dc79678f530d09b338f9663d9945873985ce1389a​​) before deployment. Cisco TAC provides 24/7 support under active service contracts for configuration guidance.


Technical specifications derived from Cisco ISR 4000 Series Release Notes (16.7.x) and Security Advisory CSCwh45089. Always consult official documentation for implementation requirements.

: FPGA firmware prerequisites for hardware acceleration
: Compatibility matrix for WAN interface modules
: ZTP configuration requirements with vManage 2.3+

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