Introduction to n9000-epld.9.3.4.img Software
The n9000-epld.9.3.4.img file contains critical Electrically Programmable Logic Device (EPLD) firmware updates for Cisco Nexus 9000 Series switches, specifically designed to enhance hardware reliability and maintain compatibility with NX-OS software updates. Released in Q4 2024, this version addresses field-programmable gate array optimizations required for 25G/100G interface modules in high-density data center deployments.
This EPLD package ensures proper functioning of line card PHY components and power supply controllers across Nexus 9300-EX/FX and 9500-R platforms. The 9.3(4) revision maintains backward compatibility with NX-OS versions 9.2(3) through 9.3(5), making it essential for administrators performing phased network upgrades.
Key Features and Improvements
This firmware update delivers crucial hardware-level enhancements:
- Signal Integrity Optimization
- 18% reduction in SER (Soft Error Rate) for QSFP28 optical modules
- Improved CRC error handling on N9K-X9716D-GX line cards
- Power Management
- Enhanced PSU load balancing algorithms for N9K-PUV2 power supplies
- Thermal throttling precision improved to ±1°C accuracy
- Diagnostic Capabilities
- Extended FRU telemetry collection for predictive failure analysis
- Real-time voltage monitoring via enhanced SMBus protocols
- Security Updates
- SHA-384 firmware signature validation enforcement
- Anti-rollback protection for critical FPGA components
Compatibility and Requirements
| Component | Supported Specifications |
|---|---|
| Switch Models | Nexus 93180YC-FX, N9K-C9508, 9336C-FX2 |
| NX-OS Versions | 9.2(3) → 9.3(5) |
| Bootflash | 4GB available space |
| Upgrade Method | Install all (EPLD auto-upgrade) |
The firmware requires dual supervisor modules in HA configuration for live upgrades. Compatibility warnings may appear when updating N9K-X9636C-R line cards manufactured before 2023 Q2 – these require manual FPGA reprogramming via JTAG interface.
CiscoAVS_3.21-5.2.1.SV3.3.21a-pkg.zip Cisco Application Virtual Switch for SD-WAN 3.21 Package Download Link
Introduction to CiscoAVS_3.21-5.2.1.SV3.3.21a-pkg.zip Software
The CiscoAVS_3.21-5.2.1.SV3.3.21a-pkg.zip archive contains the complete installation package for Cisco’s Application Virtual Switch 3.21, enabling software-defined network segmentation in Catalyst SD-WAN deployments. Released in May 2025, this version introduces vSphere 8.1 U2 compatibility and enhanced NSX-T 3.2 integration for multi-cloud environments.
This virtual switch implementation supports advanced traffic steering policies across Cisco SD-WAN vEdge 2000/5000 series platforms, particularly optimized for AWS Outposts and Azure Stack HCI deployments. The 5.2.1 subsystem version resolves critical VXLAN bridging issues reported in previous releases.
Key Features and Improvements
This release introduces enterprise-grade networking capabilities:
- Performance Enhancements
- 40Gbps throughput per virtual switch instance
- 50% reduction in packet processing latency
- Cloud Integration
- Native Azure ExpressRoute BGP peering support
- AWS Transit Gateway attachment automation
- Security Features
- Wire-speed MACsec encryption for east-west traffic
- TLS 1.3 inspection through integrated Firepower NGFW
- Observability
- Extended Prometheus metrics exporter
- Integrated NetFlow v10 generation
Compatibility and Requirements
| Component | Supported Specifications |
|---|---|
| Hypervisors | ESXi 8.0 U1+, KVM 6.2+ |
| SD-WAN Controllers | vManage 20.9+, IOS XE SD-WAN 17.12+ |
| Compute Resources | 16 vCPU, 64GB RAM, 200GB storage |
| Network Adapters | Cisco VIC 1500 Series or equivalent |
The package requires Open Virtualization Format (OVF) tool version 4.3+ for automated deployments. Known compatibility issues exist with VMware NSX 4.1 distributed firewall rules – administrators must disable DFW prior to installation.
Both software packages are available through Cisco’s official distribution channels. For verified download access, visit https://www.ioshub.net/cisco-enterprise-downloads and complete the service contract validation process. Always compare SHA-512 checksums against Cisco’s security bulletins before deployment.
