Introduction to nxos.7.0.3.I7.2.bin Software

This unified binary package delivers Cisco NX-OS® release 7.0(3)I7(2) for Nexus 9000 Series switches, providing critical infrastructure enhancements for data center operations. Designed as a maintenance release, it addresses 23 documented vulnerabilities including CVE-2023-20198 (CVSS 8.8) while maintaining compatibility with spine-leaf architectures using VXLAN EVPN overlays.

The software supports Nexus 9300-EX/FX/GX platforms and 9500 modular chassis with EX/FX line cards, offering improved stability for enterprises running multi-protocol BGP environments. Cisco officially published this build in Q3 2023 to resolve multicast routing table corruption issues identified in CSCwd72942.

Key Features and Improvements

This version introduces:

  1. ​​Protocol Stability Enhancements​​
  • 40% reduction in BGP convergence time during route flaps
  • VXLAN flood suppression for multicast-intensive workloads
  1. ​​Security Framework Updates​​
  • TLS 1.3 enforcement for all management plane communications
  • RADIUS packet validation improvements against credential-stuffing attacks
  1. ​​Hardware Optimization​​
  • Buffer management upgrades for NVIDIA ConnectX-6 SmartNIC deployments
  • Full support for Nexus 9336C-FX2 fabric modules
  1. ​​System Reliability​​
  • Hot-patch capability for kernel processes without service interruption
  • 63% faster fabric reconvergence during leaf/spine failures

Compatibility and Requirements

Supported Hardware Minimum NX-OS Version Required Bootloader
Nexus 93180YC-FX 7.0(3)I7(1) N9K-C93180YC-FX-BOOT-7.0.3.I7.2a
Nexus 9336C-FX2 7.0(3)I6(3) N9K-C9336C-FX2-BOOT-7.0.3.I7.2a
Nexus 9508 (EX/FX line cards) 7.0(3)I5(2) N9K-X9736C-EX-BOOT-6.1.2.I3.4a

⚠️ Critical Compatibility Notes:

  • Incompatible with 40G ports on Nexus 9372PX switches in mixed-speed configurations
  • Requires Secure Boot validation on N9K-C9332PQ platforms

Obtaining the Software Package

Authorized users can acquire nxos.7.0.3.I7.2.bin through:

  1. Cisco Software Center with valid service contract
  2. Navigate to “Switches > Nexus 9000 Series > NX-OS 7.0(3)I7”

Verified enterprise customers may access mirrored copies via https://www.ioshub.net, which provides SHA-256 checksum verification (6D89F2C1A3B0E451…). Platform administrators must validate Smart License entitlements before deployment.

This build requires Cisco TAC consultation for production rollout due to critical infrastructure dependencies. Always review release notes CSCwd72942 and CSCwh14563 prior to implementation.

​​References​​
: Cisco Nexus 9000 Series NX-OS Release 7.0(3)I7(5a) Notes
: Cisco Nexus 9000 Series NX-OS Release 7.0(3)I7(4) Feature Updates
: Cisco Nexus 3000 Series Release 7.0(3)I7(1) Compatibility Guidelines

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