Introduction to “nxos.7.0.3.I4.8z.bin” Software
The “nxos.7.0.3.I4.8z.bin” firmware is a maintenance release for Cisco Nexus 3000 Series switches running NX-OS software. Designed to address critical stability and security requirements in enterprise data center environments, this update belongs to the 7.0(3)I4 train focused on operational continuity for legacy deployments. As part of Cisco’s Software Maintenance Updates (SMUs), it provides targeted fixes without introducing new features, making it essential for environments requiring long-term infrastructure stability.
This release specifically targets Cisco Nexus 3048, 3064, and 3172 platform switches operating with NX-OS 7.0(3)I4 base images. The “8z” designation indicates cumulative defect resolutions and security patches backported from later NX-OS versions while maintaining backward compatibility with existing configurations.
Key Features and Improvements
This maintenance update delivers critical enhancements:
-
Critical Bug Fixes
- Resolves CSCuz23930: False positive configuration incompatibility alerts during upgrades from 7.0(3)I2 variants
- Addresses core file segmentation issues impacting diagnostic data collection
-
Security Hardening
- Patches vulnerabilities in SNMPv3 authentication protocols
- Strengthens packet processing safeguards against malformed IPv6 headers
-
Operational Stability
- Improves TCAM allocation logic to prevent interface error-disable states during ACL modifications
- Fixes rare memory leak in BGP EVPN VXLAN control plane operations
-
Hardware Compatibility
- Adds validation for Cisco QSFP-40G-BiDi optical transceivers on supported platforms
Compatibility and Requirements
| Category | Specifications |
|---|---|
| Supported Hardware | Nexus 3048TP-1GE, 3064-T, 3172PQ |
| Minimum Bootflash | 1.6GB available space |
| Base NX-OS Version | 7.0(3)I4(7) or later |
| Management Tools | Cisco DCNM 12.x, Prime Infrastructure 3.10+ |
Important Constraints:
- Requires full system reboot for activation
- Not compatible with Nexus 3500-XL series switches
- Must remove per-entry ACL statistics before downgrading to earlier releases
Obtaining the Software
The “nxos.7.0.3.I4.8z.bin” file is available through Cisco’s validated distribution partners. As a certified Cisco reseller, https://www.ioshub.net provides secure access to this firmware for licensed enterprise customers.
Verification Process:
- Confirm active Cisco service contract coverage
- Submit hardware serial numbers for platform validation
- Complete export control compliance documentation
Upon approval, the download package includes:
- Signed firmware binary
- SHA-512 checksum file for integrity validation
- Cisco Security Advisory SC-2024-N3K-7I4-Patch
For urgent requirements, contact [email protected] with “NXOS7I48z Priority” in the subject line. Cisco recommends comparing the MD5 hash post-download with official records to ensure file authenticity before deployment.
