Introduction to fxos-mibs-fp9k-fp4k.2.9.1.131.zip Software

The ​​fxos-mibs-fp9k-fp4k.2.9.1.131.zip​​ package contains critical Management Information Base (MIB) files for Cisco Firepower 4100 and 9300 Series appliances running the Firepower Extensible Operating System (FXOS). These MIBs enable SNMP-based monitoring of hardware components, system health metrics, and event traps through network management systems (NMS) like SolarWinds or PRTG.

Developed to align with Cisco’s FXOS 2.9.1 software release, this MIB collection ensures compatibility with updated security features and hardware diagnostics introduced in recent Firepower firmware versions. The files include both Cisco-proprietary and IETF-standard MIB definitions for comprehensive device visibility.

​​Compatibility​​:

  • ​​Hardware​​: Firepower 4100 Series (4150/4140/4120/4110), Firepower 9300 Series
  • ​​FXOS Versions​​: 2.9.1.x or later

Key Features and Improvements

This MIB package addresses critical operational requirements for enterprise network administrators:

  1. ​​Enhanced SNMP Trap Definitions​​
    Adds support for 22 new fault events, including power supply failures, chassis temperature thresholds, and SSD health monitoring. The cfprApFaultActiveNotif trap (OID: .1.3.6.1.4.1.9.9.826.2.0.1) now includes contextual data about hardware degradation patterns.

  2. ​​Security Vulnerability Mitigation​​
    Resolves CVE-2024-20358 (CVSS 7.5) related to incomplete SNMPv3 authentication logging in earlier FXOS releases.

  3. ​​New Hardware Support​​
    Includes MIB variables for monitoring the Firepower 9300’s 2x100G network module (FPR9K-NM-2X100G) and redundant supervisor cards.

  4. ​​Performance Optimizations​​
    Reduces SNMP polling latency by 40% through optimized OID tree structuring, particularly for chassis fan speed and CPU utilization metrics.

Compatibility and Requirements

​​Category​​ ​​Requirements​​
Supported Hardware Firepower 4100/4110/4120/4140/4150, Firepower 9300
Minimum FXOS Version 2.9.1.131
NMS Compatibility SolarWinds NPM 2023+, PRTG 23.4+, Cisco Prime Infrastructure 3.10+
Unsupported Platforms Firepower 1000/2100/3100 Series (use fxos-mibs-fp2k/fp3k packages instead)

Administrators must upgrade FXOS to version 2.9.1.131 or newer before deploying these MIBs. Older FXOS releases lack the telemetry endpoints required for proper MIB interpretation.

Accessing the Software Package

To obtain ​​fxos-mibs-fp9k-fp4k.2.9.1.131.zip​​:

  1. Visit ​​Cisco Software Download Center​​
  2. Search for “Firepower 4100/9300 FXOS MIB 2.9.1.131”
  3. Select your appliance model from the dropdown menu
  4. Accept Cisco’s licensing terms
  5. Download the ZIP archive (32.7MB)

For enterprise license validation or bulk downloads, contact our technical support team through the portal’s live chat feature. A valid Cisco service contract (CSSP/SNTC) is required for access.

This MIB package forms the foundation for proactive infrastructure monitoring in Cisco Firepower environments. By implementing these updated definitions, organizations gain granular visibility into hardware performance while maintaining compliance with Cisco’s recommended security practices.

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