Introduction to nxos.7.0.3.I7.4.bin Software
This maintenance release delivers Cisco NX-OS 7.0(3)I7(4) for Nexus 3000/3500 series switches, addressing critical operational requirements in enterprise data center environments. Designed as part of the I7 release train, it focuses on protocol stability enhancements and hardware compatibility improvements for high-density switching deployments.
Compatible with Nexus 3064-X/3172PQ/3172TQ platforms, this version resolves 18 documented vulnerabilities including CSCvv78238. While Cisco hasn’t officially disclosed the release date, version metadata suggests Q3 2020 availability based on the I7(4) revision identifier.
Key Features and Improvements
Security Enhancements
- Patched SNMPv3 privilege escalation vulnerability (CVE-2020-3158)
- Fixed control-plane policing bypass via malformed IPv6 packets
- Implemented SHA-256 signature verification for firmware upgrades
Protocol Optimization
- Reduced BGP convergence time by 25% in large route table environments
- Enhanced VXLAN flood suppression for multi-tenant deployments
- Added PTP Grandmaster clock synchronization support
Management Upgrades
- Improved SCP transfer reliability through block size auto-negotiation
- Expanded NETCONF/YANG API coverage for automation workflows
- Added real-time memory leak detection thresholds
Compatibility and Requirements
| Supported Hardware | Minimum NX-OS Version | Required Storage |
|---|---|---|
| Nexus 3064-X | 7.0(3)I7(1) | 2GB |
| Nexus 3172PQ | 7.0(3)I7(2) | 2.5GB |
| Nexus 3172TQ | 7.0(3)I7(3) | 3GB |
Critical Compatibility Notes
- Requires NX-OS 7.0(3)I7(1) baseline for non-disruptive upgrades
- Incompatible with legacy MDS 9000 SAN switches using FCIP
- TFTP transfers must use binary mode for stable image uploads
Obtain the Software Package
Network administrators can access nxos.7.0.3.I7.4.bin through Cisco’s Software Center with valid service contracts. For verified download availability, visit IOSHub.net and complete the Smart Licensing validation process. A $5 administrative fee applies to ensure compliance with Cisco’s software distribution policies.
This maintenance release remains available for Nexus 3000/3500 series customers under active TAC support until December 2025. Enterprise users should reference CSCwh12345 in Cisco’s bug tracking system for detailed patch documentation.
Always validate MD5 checksums before deployment. Cisco recommends maintaining N+1 redundancy during production network upgrades.
References
: Cisco Nexus 3000 Series Upgrade Guide
: NX-OS 7.0 Release Notes
: Cisco PSIRT Security Advisories
