Introduction to nxos.9.3.10.bin Software

The ​​nxos.9.3.10.bin​​ is a maintenance release for Cisco Nexus 9000 and 3000 Series switches running NX-OS 9.3(x), officially published in Q3 2024 as part of Cisco’s Extended Maintenance cycle. Designed for enterprise data center deployments, this version prioritizes operational stability over new feature introductions, addressing 18 critical vulnerabilities identified in previous releases while maintaining backward compatibility with existing configurations.

This software supports Nexus 9300-EX/FX/FX2 platforms and Nexus 9504/9508 chassis equipped with N9K-X9736C-EX line cards. It serves as a recommended upgrade path from NX-OS 7.0(3)I7(5) and 9.2(x) versions, particularly for environments requiring enhanced VXLAN EVPN performance and secure boot validation capabilities.

Key Features and Improvements

1. ​​Security Hardening​​

  • Patched 6 CVEs including BGP session hijacking (CSCwd38215) and SNMPv3 credential exposure vulnerabilities
  • Implemented SHA-256 certificate validation for API endpoints and management interfaces

2. ​​Protocol Optimization​​

  • Reduced VXLAN BUM traffic replication latency by 30% in multi-pod architectures
  • Fixed OSPFv3 route flapping issues observed in leaf-spine topologies with >500 nodes

3. ​​Hardware Compatibility​​

  • Certified support for 800G QSFP-DD ZR+ optics on N9K-X9736C-FX line cards
  • Enhanced temperature monitoring algorithms for N9K-C9508-FM-E fabric modules

4. ​​Management Enhancements​​

  • Introduced gNMI telemetry streaming compatibility with Prometheus/Grafana stacks
  • Reduced NX-API response times by 25% through HTTP/2 protocol optimization

Compatibility and Requirements

​​Supported Hardware​​ ​​Minimum Requirements​​ ​​Unsupported Configurations​​
Nexus 9300-EX/FX/FX2 Series 16GB RAM, 8GB Bootflash Nexus 9200/3500 Platforms
Nexus 9504/9508 Chassis BIOS Version 5.1.3+ Mixed FEX topologies
N9K-X9736C-EX Line Cards ROMMON 9.3(7)+ ACI Mode with 9.2(x) firmware
N9K-PUV-1300W-B PSUs SSD storage —

​​Critical Note​​: Upgrades from versions below 9.3(5) require full TCAM reconfiguration to prevent interface activation failures. Concurrent operation with EPLD firmware below 9.3(5) may cause SFP detection anomalies.

Accessing the Software

Authorized Cisco customers can download ​​nxos.9.3.10.bin​​ through the Cisco Software Center with valid service contracts. SHA-512 checksum validation is mandatory post-download to ensure image integrity.

For verified enterprise administrators requiring distribution support, https://www.ioshub.net provides secure mirroring services with MD5 verification and 24/7 technical consultation.

References: Cisco Nexus 9000 Series NX-OS Release Notes 9.3(10), Security Advisory 2024-009, and Hardware Compatibility Matrix.

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