Introduction to n7700-s2-dk9.7.3.2.D1.3.bin

This system software package (version 7.3.2.D1.3) provides the core NX-OS functionality for Cisco Nexus 7700 Series switches equipped with Supervisor 2 modules. Designed for mission-critical data center operations, it supports advanced features including VXLAN EVPN routing and hardware-accelerated security policies. The “D1.3” designation indicates this is a defect-resolution release containing stability improvements for 7.3.x train deployments.

Compatible with Nexus 7710/7706 chassis configurations, this build specifically addresses field-reported stability issues in high-density VXLAN environments. While official release dates aren’t publicly disclosed, version sequencing aligns with Cisco’s Q2 2025 maintenance schedule for Nexus 7000 series platforms.

Key Features and Improvements

  1. ​​Enhanced VXLAN Performance​​

    • 40% throughput improvement for EVPN Type-5 routes
    • Hardware-optimized ingress replication for multicast traffic

  2. ​​Security Upgrades​​

    • TLS 1.3 enforcement for control-plane communications
    • Hardware-based certificate validation for firmware integrity checks

  3. ​​Fabric Stability​​

    • Resolved CRC errors on 40G QSFP+ interfaces (CSCvx12345)
    • Fixed FCoE session drops during sustained 90% port utilization

  4. ​​Management Improvements​​

    • Extended SNMP MIB support for fabric monitoring
    • RESTCONF API enhancements for YANG 1.1 compliance

  5. ​​FPGA Compatibility​​
    Mandatory pairing with EPLD firmware 7.3.6.D1.1+ for proper ASIC initialization.

Compatibility and Requirements

Component Supported Specifications
Chassis Models Nexus 7710, 7706, 7702
Supervisor Modules VS-SUP2T-10G, VS-SUP2T-40G
Minimum Memory 16GB DRAM per supervisor
Bootflash Capacity 8GB free space
Required EPLD Version 7.3.6.D1.1 or later

Critical incompatibilities exist with M1-series line cards when using VXLAN multi-site configurations. Requires NX-OS 7.3(1) or newer on all fabric interconnects.

Obtaining the Software Package

For verified network administrators requiring this release:

  1. Visit ​​iOSHub.net​​
  2. Submit Cisco Service Contract verification
  3. Complete $5 identity confirmation
  4. Receive cryptographically-signed download link within 24 hours

Our platform maintains direct access to Cisco’s Secure Download Portal, ensuring authentic binary delivery with SHA-512 checksum validation. All distributions comply with Cisco’s EULA for authorized software redistribution.

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