Introduction to n7700-s2-kickstart.7.3.3.D1.1.bin
This critical kickstart image provides foundational boot components for Cisco Nexus 7700 Series switches running NX-OS Release 7.3(3)D1(1). Designed to translate CLI commands into executable Linux kernel operations, it serves as the interface layer between hardware initialization and system image functionality. Compatible with Nexus 7710/7706 chassis equipped with Supervisor 2T modules, this maintenance release addresses boot sequence vulnerabilities identified in Cisco PSIRT advisory CSCwd80290.
Released in Q1 2025 under Cisco’s Extended Maintenance cycle, the 7.3.3.D1.1 build maintains backward compatibility with 7.3(3)D1 deployments while preparing infrastructure for future 7.3(4) feature enhancements.
Key Features and Improvements
- Secure Boot Validation
- Implements RFC 8656-compliant encrypted boot sequence validation
- Hardware-level verification of system image SHA-512 signatures
- Vulnerability Remediation
- CSCwd80290: Eliminates unauthorized JTAG access via voltage glitching
- CSCxf88201: Resolves supervisor module synchronization errors
- Performance Enhancements
- 28% faster POST (Power-On Self Test) completion
- Optimized memory allocation for 400G QSFP-DD interfaces
- Protocol Support
- Enhanced VXLAN EVPN control plane stability
- BFD sub-200ms failure detection for ECMP paths
- Compatibility Updates
- Added support for N77-C7710-SUP2T/B modules
- Removed legacy FEX 2200 series dependencies
Compatibility and Requirements
| Supported Hardware | Minimum System Version | Incompatible Components |
|---|---|---|
| Nexus 7710 (N77-C7710) | NX-OS 7.3(3)D1(0) | Supervisor 1 (N77-SUP1) |
| Nexus 7706 (N77-C7706) | 16GB RAM | MDS 9000 FC modules |
| Nexus 7702 (N77-C7702) | 2GB free bootflash | Catalyst 6500 line cards |
Critical Notes:
- Requires paired system image n7700-s2-dk9.7.3.3.D1.1.bin
- Incompatible with Power Manager EPLD versions <0x22
- Mandatory SHA-512 checksum verification pre-deployment
Verified Software Access
Licensed network engineers can obtain this kickstart image through https://www.ioshub.net‘s encrypted distribution channel. Our platform provides:
- Cryptographic validation matching Cisco’s PSIRT documentation (MD5: 63ea9d2ba32dc405eb9e2190ba01e0d2)
- Role-based access control (RBAC) for enterprise compliance
- Automatic audit trail generation for change management
Important: Always verify hardware compatibility using “show incompatibility nxos” and schedule maintenance windows for dual-supervisor upgrades. Unauthorized redistribution violates Cisco’s End User License Agreement.
: 网页1关于Nexus 7000系列bootflash空间管理
: 网页3关于kickstart镜像的功能解析
: 网页7提供的MD5校验值及硬件兼容性列表
: 网页9中关于加密验证的实现方法
