Cisco Nexus 9348D-GX2A Switch
A high-density 400G fixed switch with hardware MACsec encryption on every port — delivering secure, high-performance connectivity for modern data center spine and leaf deployments that cannot compromise on security or speed.
Product Overview
Encryption on Every Port
Line-rate 256-bit AES-GCM MACsec hardware encryption on all 48 ports — zero performance penalty for complete data-in-motion security.
48x 400G High Density
48 line-rate 400G QSFP-DD ports in a compact 1RU — higher port density for more efficient rack space utilization.
Cisco Silicon One
Purpose-built Cisco Silicon One ASIC delivers industry-leading port density with high forwarding rates and power efficiency.
AI/ML Fabric Ready
PFC, ECN, DCBX, and RoCE support enable lossless AI training fabrics — with encryption ensuring data security throughout.
Defense-in-Depth
Combines hardware MACsec with Secure Boot, RBAC, ACLs, and streaming telemetry for comprehensive security at the data center fabric layer.
Deep Observability
Model-driven telemetry and Nexus Dashboard Insights provide per-flow visibility across the fabric for proactive operations.
Features and Benefits
High-density 400G with zero-compromise security.
The Nexus 9348D-GX2A is designed for organizations that require both maximum port density and uncompromising security — MACsec encryption on every 400G port, always on, at line rate.
Always-On MACsec
Hardware-accelerated MACsec is always active on all ports — ensuring encrypted connectivity without configuration overhead or performance tradeoffs.
Lossless AI/ML Fabric
PFC, ECN, and DCBX protocols support lossless RoCE/RDMA transport for AI training clusters — encrypted end-to-end.
VXLAN BGP EVPN
Standards-based overlay networking with encrypted underlay and overlay — complete data-in-motion security across the fabric.
Breakout Flexibility
Port breakout to 4x100G, 4x25G, or 2x200G supports diverse connectivity requirements without additional switch hardware.
Programmable Operations
NETCONF/YANG, gNMI, POAP, and Ansible/Terraform integrations for automated deployment and ongoing management.
Non-Stop Operations
ISSU, vPC, hot-swap power supplies and fans ensure continuous encrypted operation during planned and unplanned events.
Specifications
Performance
Ports & Interfaces
Security
Physical
Documentation
400G & 800G Portfolio
Explore the full portfolio of Cisco Nexus 400G and 800G switches.
View Portfolio ›NX-OS Brochure
Open, Secure, and Extensible — the operating system powering all Cisco Nexus 9000 switches.
Download PDF ›Ready to deploy the Nexus 9348D-GX2A?
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