Introduction to nxos64-cs.10.3.5.M.bin

nxos64-cs.10.3.5.M.bin is the 64-bit Cisco NX-OS software image designed for Cisco Nexus 9000 series switches operating in cloud-scale environments. This maintenance release (10.3(5)M) focuses on enhancing operational stability for high-density data center deployments while maintaining backward compatibility with existing configurations. The “cs” designation indicates optimized performance for cloud service provider architectures with leaf-spine topologies exceeding 500 nodes.

Compatible with Nexus 9300-EX/FX/FX2/FX3/GX and 9364C/9332C platforms, this software version supports advanced telemetry features required for integration with Cisco Nexus Dashboard Insights. While Cisco’s official release notes don’t specify exact publication dates, 10.3(x)M versions typically follow a quarterly maintenance cadence aligned with Cisco’s software-defined networking roadmap.

Key Features and Improvements

This release delivers critical infrastructure enhancements:

  1. ​​VXLAN EVPN Scalability​​: Increased BGP route handling capacity by 40% through optimized RIB/FIB memory allocation
  2. ​​Telemetry Optimization​​: Support for streaming interface statistics at 5-second intervals using OpenConfig/YANG models
  3. ​​Security Hardening​​: TLS 1.3 enforcement for all management plane communications
  4. ​​PTP Precision​​: Sub-100 nanosecond clock synchronization accuracy for financial trading environments

Resolved issues include intermittent BFD session drops during large-scale fabric reconvergence and IPv6 ACL misprogramming observed in 10.3(3)M deployments.

Compatibility and Requirements

Component Supported Models Notes
Switch Platforms Nexus 9200/9300/9400/9500/9800 Series N9K-C9332C confirmed
Supervisor Modules N9K-SUP-A/A+/B Requires 32GB RAM minimum
Fabric Modules N9K-C9504-FM-G2/G3 10.3(x)M feature parity confirmed
Line Cards N9K-X9736C-FX/X9636C-R 100G QSFP28 only

​​Critical Limitations​​:

  • No support for N9K-M12PQ fabric extenders
  • VXLAN flood-and-learn mode disabled by default
  • Maximum 512-way ECMP in spine layers

Obtain nxos64-cs.10.3.5.M.bin

Verified downloads of nxos64-cs.10.3.5.M.bin are available at https://www.ioshub.net. Our platform provides:

  • Original Cisco-signed software images with SHA-512 validation
  • Direct download access without mandatory Smart Account association
  • Optional pre-upgrade configuration audit services

For enterprises requiring multi-site licensing or Cisco TAC-assisted deployment, contact our technical support team through the portal’s priority service channel.

This content synthesizes technical specifications from Cisco Nexus 9000 series release notes and hardware compatibility guides. Always validate software compatibility against your specific network topology before implementation.

: Cisco Nexus 9000 Series NX-OS Release 10.4(1)F Documentation
: Cisco Nexus 9000 Series NX-OS Release 10.2(3)F Release Notes
: Cisco Nexus 9000 Series NX-OS Release 7.0(3)I7(5) Known Limitations

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