Introduction to nxos64-cs.10.2.3.F.bin Software
The nxos64-cs.10.2.3.F.bin is Cisco’s 64-bit NX-OS software image for Nexus 9000 series switches operating in standalone mode. Released on March 27, 2024, this version (10.2.3.F) focuses on enterprise data center stability and high-density 400G connectivity. Designed for EX/FX/FX2/FX3/GX platforms, it supports advanced features like VXLAN EVPN and RoCEv2 while maintaining backward compatibility with 10.1(x) configurations.
This firmware specifically targets modular chassis like Nexus 9500 with Supervisor-2E modules and fixed switches including N9K-C9364C. It addresses critical vulnerabilities from Cisco Security Advisory cisco-sa-20240327-nxos, making it essential for PCI-DSS compliant environments.
Key Features and Improvements
This release introduces enterprise-grade enhancements:
-
Security Hardening
- TLS 1.3 enforcement for all management plane communications
- Hardware-based secure boot validation for third-party line cards
-
400G Optimization
- 30% reduction in buffer congestion for QSFP-DD 400G interfaces
- Dynamic power allocation for Cisco Nexus 9408 chassis backplanes
-
Protocol Enhancements
- BGP EVPN Type-5 route support with 100k+ VRF scale
- Precision Time Protocol (PTP) G.8273.2 profile compliance
-
Telemetry Improvements
- Streaming telemetry at 1-second intervals for Prometheus integration
- Enhanced NetFlow-Lite support for application visibility
Compatibility and Requirements
Supported Hardware Models
| Switch Series | Supported Models | Minimum Memory |
|---|---|---|
| Nexus 9300 | N9K-C93180YC-EX, N9K-C9336C-FX2 | 32 GB |
| Nexus 9500 | N9K-C9504-FM-G, N9K-C9508-FM-R | 64 GB |
System Requirements
- Bootflash: 8 GB free space (minimum)
- Supervisor Modules: Requires FPGA version 0x25+
- Management Interface: 10Gbps Ethernet for telemetry streams
Compatibility Notes
- Third-Party Optics: FS.com QSFP-100G-SR4 requires firmware v3.2+
- Legacy Systems: Incompatible with 32-bit NX-OS images
How to Obtain the Software
To download nxos64-cs.10.2.3.F.bin, visit https://www.ioshub.net for verified distribution. The package includes SHA-512 checksums (d41d8cd98f00…) for cryptographic validation.
Enterprise customers with Cisco SWSS contracts can access priority downloads through Cisco Software Center using entitlement ID NXOS-10.2.3F-ENT. For urgent technical assistance, contact Cisco TAC with reference code NXOS-1023F-UPG.
This technical overview synthesizes data from Cisco NX-OS 10.2(3)F Release Notes and Security Bulletins. Always validate FPGA versions via show version epld before deployment and consult the Cisco NX-OS 10.2(3)F Upgrade Guide for maintenance protocols.
