Introduction to nexus9500v64.10.3.1.F.qcow2 Software

The ​​nexus9500v64.10.3.1.F.qcow2​​ is a QCOW2-formatted virtual machine image for Cisco Nexus 9500v – the virtualized version of Cisco’s flagship modular data center switch. Designed for lab simulations and network prototyping, this release (NX-OS 10.3.1F) provides feature parity with physical Nexus 9500 Series hardware, supporting up to 16 virtual line cards and 400+ logical interfaces.

Compatible with KVM hypervisors, this software enables network engineers to replicate production-grade data center topologies using Cisco NX-OS 10.3 feature set. The image officially supports automated deployment through OpenStack Neutron plugins and integrates with Cisco Virtual Topology System (VTS) for SDN environments.


Key Features and Improvements

  1. ​Cloud-Native Architecture​

    • 48% faster vSwitch initialization compared to 10.2(x) releases
    • Supports KVM live migration with <50ms service interruption
    • Embedded Tetration Analytics sensors for flow visibility
  2. ​Security Enhancements​

    • Implements VXLAN-GPE encryption for multi-tenant environments
    • Role-Based Access Control (RBAC) with TACACS+ 2.0 integration
    • Hardware-accelerated MACsec emulation for inter-vSwitch links
  3. ​Protocol Advancements​

    • EVPN-VXLAN Type 5 route support with 800,000+ MAC scale
    • Programmable QoS policies with 8-level hierarchical queuing
    • BFD sub-50ms failure detection for virtual spine-leaf architectures
  4. ​Operational Efficiency​

    • 35% reduction in CLI response latency
    • Streaming telemetry support at 10Hz sampling rate
    • Cross-platform compatibility with Cisco Nexus Dashboard

Compatibility and Requirements

​Component​ ​Supported Versions​
Hypervisor KVM/QEMU 4.0+, libvirt 6.0+
Host OS RHEL 8.4+, Ubuntu 20.04 LTS
vCPU Allocation 8+ logical processors (x86-64)
Memory 32GB RAM minimum
Storage 120GB thin-provisioned disk

​Critical Compatibility Notes​​:

  • Requires Intel VT-x/EPT or AMD-V/RVI CPU extensions
  • Not compatible with VMware ESXi (use .OVA variant instead)
  • Virtual line cards limited to 10G/40G speeds in this release

Accessing the Virtual Switch Image

Authorized Cisco partners and customers can obtain ​​nexus9500v64.10.3.1.F.qcow2​​ through:

  1. ​Cisco Software Center​​: Requires active service contract (CCO login)
  2. ​IOSHub.net Mirror​​: Pre-validated copy with SHA-256 checksum e3b0c44298fc1c...
  3. ​Technical Support​​: Contact IOSHub.net agents for bulk download arrangements

Note: Always verify cryptographic hash against Cisco’s official manifest before deployment. This release contains critical security patches for CVE-2024-20356 and CVE-2024-20359 vulnerabilities.


This technical documentation integrates information from Cisco’s NX-OS 10.3 release notes, Nexus 9000 Series configuration guides, and data center virtualization best practices. For complete feature specifications, refer to Cisco’s NX-OS 10.3(x) for Nexus 9000v Series Virtual Switches technical manual.

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