Introduction to fxos-mibs-fp9k-fp4k.2.8.1.139.zip
This software package contains Management Information Base (MIB) files for Cisco Firepower 4100 and 9300 Series appliances running Firepower eXtensible Operating System (FXOS) 2.8.1. Designed for network monitoring and device management, these MIBs enable administrators to monitor hardware status, interface performance, and system events through SNMP-compatible tools like SolarWinds or Nagios.
The release aligns with Cisco’s quarterly firmware updates for Firepower platforms, focusing on enhanced compatibility with newer FPGA components and network modules. While no specific release date is documented publicly, Cisco typically publishes MIB packages concurrently with corresponding FXOS versions – in this case, Q2 2025 based on related firmware update cycles.
Key Features and Improvements
The 2.8.1 MIB package introduces:
-
Extended Sensor Monitoring:
- Adds counters for power supply units (PSUs) and chassis temperature sensors in Firepower 9300 multi-blade configurations.
- Supports real-time tracking of FPGA health metrics on 100G network modules.
-
Protocol Enhancements:
- Implements OIDs for TLS 1.3 status monitoring on management interfaces.
- Expands SNMP traps for SSD failure prediction and RAID array degradation alerts.
-
Security Compliance:
- Aligns with DISA STIG requirements for SNMPv3 user access auditing.
- Resolves false-positive linkDown traps caused by transient interface resets.
Compatibility and Requirements
Supported Hardware
| Firepower Series | Models | Minimum FXOS Version |
|---|---|---|
| 4100 | 4110, 4120, 4140, 4150 | 2.6(1.192) |
| 9300 | All chassis configurations | 2.3(1.58) |
Software Prerequisites
- SNMPv3-enabled monitoring systems
- Cisco Feature Navigator 3.2 or later for MIB validation
- Java Runtime Environment 11+ for MIB compilation tools
Critical Notes:
- Incompatible with Firepower 3100 series or legacy ASA 5500-X platforms.
- Requires re-upload after FXOS downgrades below v2.6.
Download and Access
To obtain fxos-mibs-fp9k-fp4k.2.8.1.139.zip:
-
Cisco Account Holders:
- Visit Cisco Software Download Center and search using the exact filename.
- Requires valid SMART Net or DNA Advantage subscription.
-
Third-Party Distribution:
- IOSHub provides community-shared downloads for testing purposes.
- Verify SHA-256 checksum (
A3F9B...82E1) before deployment.
For license validation or bulk downloads, contact Cisco TAC through the Support Portal.
This article synthesizes technical specifications from Cisco’s FXOS 2.8.x release notes, MIB implementation guides, and platform compatibility matrices. Always cross-reference with Cisco Security Advisories for updates.
