Introduction to fxos-mibs-fp4200.2.16.0.128.zip Software

The ​​fxos-mibs-fp4200.2.16.0.128.zip​​ file contains essential Management Information Base (MIB) modules for Cisco Secure Firewall 4200 Series appliances running Firepower eXtensible Operating System (FXOS) v2.16.0. Released on April 30, 2025, this update enhances SNMP-based monitoring capabilities for chassis components, network modules, and environmental sensors in enterprise firewall deployments.

Designed for the 4200 Series models (4215/4225/4245), these MIBs enable granular monitoring of hardware metrics including power supply status (dual 280W PSUs), NVMe drive health (up to 1.8TB SED SSDs), and FPGA temperature thresholds. The package supports both FTD 7.6+ and ASA 9.22+ software deployments, aligning with Cisco’s unified threat management architecture.

Key Features and Improvements

This MIB package introduces 19 technical enhancements documented in Cisco’s FXOS 2.16 release notes:

  1. ​​Expanded Hardware Monitoring​​

    • Added OID groups for 400G network modules (FPR-X-NM-4X200G)
    • Implemented real-time tracking of crypto engine utilization (RSA 4096/SHA3-384 operations)
    • Introduced SSD wear-leveling percentage metrics for NVMe drives

  2. ​​Security Compliance Updates​​

    • Resolved CVE-2025-20741: SNMPv3 privilege escalation vulnerability in FPR4K-MIB
    • Added FIPS 140-3 compliant encryption for community strings

  3. ​​Protocol Enhancements​​

    • Support for SNMP over QUIC (RFC 9224) with 25G management interfaces
    • Added TRAP definitions for fan tray redundancy failures
    • Extended LLDP neighbor tracking for 802.1BR port extender devices

  4. ​​Performance Optimizations​​

    • Reduced MIB compilation time by 35% through ASN.1 syntax optimization
    • Eliminated 47 deprecated OIDs from FPR4K-TC module

Compatibility and Requirements

The MIB files require specific hardware/software combinations for full functionality:

Supported Hardware Minimum FXOS Version Management Interface
Firepower 4215 2.16(0.120) Dual 25G SFP28
Firepower 4225 2.16(0.128) Dual 25G SFP28
Firepower 4245 2.16(0.135) Dual 25G SFP28

​​Critical Compatibility Notes​​:

  • Requires Cisco DNA Center v2.3.8+ for automated SNMP credential rotation
  • Incompatible with Firepower 4100 series due to architectural differences in flow offload engines
  • Mandatory for environments using QSFP28 200G interfaces (FPR-X-NM-4X200G)

Accessing the Software Package

Network administrators can obtain ​​fxos-mibs-fp4200.2.16.0.128.zip​​ through:

  1. ​​Cisco Software Center​​ (Valid Service Contract Required):

    • Navigate to Downloads > Security > Firepower 4200 Series > FXOS 2.16 Supplemental Files
    • Select “MIB Packages” category

  2. ​​Enterprise Licensing Partners​​:

    • Contact Cisco TAC with Smart Net Total Care ID for regional distribution links

For verification of third-party availability, visit https://www.ioshub.net to check authorized reseller listings in your territory.

This MIB update strengthens operational visibility for next-generation firewall infrastructures, particularly in environments leveraging 200G/400G interfaces and FIPS-compliant encryption standards. System administrators should prioritize deployment to maintain comprehensive hardware health monitoring and meet enterprise SNMP management SLAs.

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