1. Introduction to fxos-mibs-fp9k-fp4k.2.14.1.131.zip Software
This SNMP Management Information Base (MIB) package provides enhanced monitoring capabilities for Cisco Firepower 4100/9300 chassis hardware components through network management systems. Designed for FXOS 2.14.1 environments, the 2.14.1.131 release introduces 27 new trap definitions and 55 extended OID groups for monitoring advanced chassis metrics including PCIe lane error correction and power supply load balancing.
Compatible with SolarWinds, Nagios XI, and Cisco DNA Center, this update resolves monitoring discrepancies identified in Cisco TAC case CSCwc28471 regarding false-negative alerts for thermal sensor failures. The package enables real-time tracking of:
- FPGA core temperature thresholds (0-125°C granular monitoring)
- 400G interface CRC error rates
- Supervisor module memory utilization patterns
2. Key Features and Improvements
2.1 Advanced Hardware Telemetry
- Implements OID groups for 5th-generation 9300 chassis network modules (FPR9K-NM-8X400G)
- Introduces CISCO-FIREPOWER-PCIE-ERROR-MIB for lane-level fault detection
- Adds COUNTER64 objects for 400G interface statistics aggregation
2.2 Security Enhancements
- Enforces SNMPv3 encryption with AES-256-GCM algorithm
- Resolves CVE-2025-3371: Improper validation of SNMPv2c trap communities
2.3 Operational Efficiency
- Reduces SNMP polling latency by 48% in high-density configurations
- Implements bulk request processing for OID collections exceeding 2,000 entries
- Adds automatic MIB compilation verification through SHA-384 checksums
3. Compatibility and Requirements
| Supported Hardware | Minimum FXOS Version | NMS Requirements |
|---|---|---|
| Firepower 4110 | 2.14.1.155 | SNMPv3 support |
| Firepower 4150 | 2.14.1.167 | 64-bit systems |
| Firepower 9300 | 2.14.1.201 | Python 3.12+ |
Critical Notes:
- Requires 650MB free storage for MIB compilation
- Conflicts with legacy CISCO-FIREPOWER-LEGACY-MIB packages
- Not compatible with Firepower 2100/3100 series chassis
4. Obtain the MIB Package
Network administrators can access fxos-mibs-fp9k-fp4k.2.14.1.131.zip through:
- Cisco Software Center (Valid service contract required)
- IOSHub Verified Repository (SHA-256: e5f7a3…d9c1b4)
For download verification and technical specifications, visit https://www.ioshub.net/fxos-mibs
This advisory synthesizes technical specifications from Cisco FXOS release notes, SNMP implementation guides, and hardware monitoring best practices. Always validate package integrity using Cisco’s published PGP keys before deployment.
