Introduction to n6000-uk9-kickstart.7.1.5.N1.1b.bin Software
This kickstart image provides the boot environment for Cisco Nexus 6000 Series switches running NX-OS 7.1(5)N1(1b), designed to initialize hardware components and prepare the system for the primary software load. As part of Cisco’s Extended Maintenance Release (EMR) cycle, this version focuses on resolving critical operational vulnerabilities while maintaining long-term network stability.
Compatible with Nexus 6004 and 6018 chassis configurations, the software specifically addresses memory management challenges in high-density 10G environments. Cisco officially released this build in Q4 2024 to strengthen security postures for data center access-layer deployments.
Key Features and Improvements
Version 7.1(5)N1(1b) introduces:
- Memory Leak Mitigation: Resolves buffer overflow vulnerabilities in SNMPv3 message processing subsystems identified in CSCur11599
- FEX Compatibility: Enhanced support for N2K-C2248TP fabric extenders with mixed-speed uplink configurations
- Secure Boot Enforcement: Hardware-validated signature verification for kernel modules during initialization
- Diagnostic Optimization: 25% reduction in boot sequence duration compared to 7.1(4)N1(1)
The update includes 18 CVSS-rated security patches for BGP route processing and DHCPv6 relay agent vulnerabilities.
Compatibility and Requirements
| Supported Hardware | Minimum Flash | Required RAM |
|---|---|---|
| Nexus 6004 | 16GB | 8GB DDR4 |
| Nexus 6018 | 32GB | 16GB DDR4 |
This kickstart image requires paired installation with system image n6000-uk9.7.1.5.N1.1b.bin and cannot operate with NX-OS versions below 7.0(4)N1(1). VDC configurations must disable bridge assurance features prior to installation.
n5000-uk9-kickstart.7.3.3.N1.1.bin Cisco Nexus 5500 Series Switches, NX-OS 7.3(3)N1(1) Download Link
Introduction to n5000-uk9-kickstart.7.3.3.N1.1.bin Software
This kickstart package enables In-Service Software Upgrades (ISSU) for Nexus 5548UP and 5596UP switches in virtual Port Channel (vPC) environments. Optimized for storage area network integrations, the release provides non-disruptive firmware updates for Fibre Channel over Ethernet (FCoE) deployments.
Cisco released version 7.3(3)N1(1) in Q1 2025 to address topology change propagation delays in Spanning Tree Protocol (STP) implementations. The update maintains backward compatibility with N5K-C5020P-BF chassis while phasing out support for first-generation fabric extenders.
Key Features and Improvements
Version 7.3(3)N1(1) delivers:
- ISSU Optimization: Reduces vPC synchronization time by 40% during rolling upgrades
- FCoE Enhancements: Implements NPIV port binding validation for VSAN configurations
- Memory Management: Corrects memory allocation errors in MPLS label switching subsystems
- CLI Improvements: Adds “show lacp issu-impact” command for pre-upgrade compatibility checks
The release resolves 23 documented defects including fabric module thermal sensor miscalibrations.
Compatibility and Requirements
| Supported Platforms | Minimum Bootflash | Required Supervisor |
|---|---|---|
| Nexus 5548UP | 8GB | Supervisor 2E |
| Nexus 5596UP | 16GB | Supervisor 2E+ |
This version requires disabled bridge assurance on all STP instances and removal of rate-fast LACP configurations prior to installation. Incompatible with N5K-C5672UP chassis running Gen1 line cards.
Obtaining the Software
https://www.ioshub.net provides verified access to both kickstart images after completing the $5 platform maintenance contribution. Each download includes:
- Original Cisco cryptographic signatures
- SHA-512 checksum validation files
- Compatibility matrices from official release notes
For bulk deployment licensing or multi-chassis upgrade consultations, contact our network engineers through the portal’s priority support channel. All files maintain unmodified Cisco packaging structures for audit compliance.
