Cisco N9K-C9348GC-FX3 Nexus 9348GC-FX3 48-Port 1G Data Center Switch

Cisco's current documentation confirms the 48 copper ports, four SFP28 uplinks, two QSFP28 uplinks, 696-Gbps bandwidth, and >517-Mpps forwarding performance.

The scalability figures above are from Cisco's N9300-FX3 documentation; physical dimensions and chassis weight are from Cisco's current hardware specifications.

The Cisco N9K-C9348GC-FX3 Nexus 9348GC-FX3 is a compact 1RU data center switch designed for enterprise, cloud, and high-density network environments. It combines 48 x 100M/1G BASE-T copper downlink ports with 4 x 10/25G SFP28 uplinks and 2 x 40/100G QSFP28 uplinks, providing a flexible platform for data center access and leaf-spine architectures.

With 696 Gbps of switching bandwidth and more than 517 Mpps of forwarding performance, the N9K-C9348GC-FX3 is designed to provide efficient connectivity between servers, network devices, and high-speed aggregation or spine layers. Its combination of 1G copper access and 10G, 25G, 40G, and 100G uplink options also supports gradual network migration without requiring an immediate replacement of the entire infrastructure.

The switch runs Cisco NX-OS and is designed for modern data center deployments where scalability, automation, network virtualization, and operational flexibility are important. It can be deployed in leaf-spine architectures and Cisco ACI environments, depending on the software and deployment configuration.

The N9K-C9348GC-FX3 is particularly suitable for organizations that still require large numbers of 1G copper connections while needing higher-speed uplinks for aggregation, spine, or data center interconnect applications.

Cisco specifically describes the model as supporting a combination of 10-, 25-, 40-, and 100-Gbps connectivity for flexible migration and spine-leaf/ACI data center deployments.

The 48 × 100M/1G BASE-T downlink ports make the N9K-C9348GC-FX3 suitable for environments that continue to use copper Ethernet connections for servers, appliances, management devices, and other data center equipment.

Four SFP28 uplink ports support 10GbE and 25GbE connectivity, providing a practical upgrade path from traditional 1G access networks.

Two QSFP28 ports support 40GbE and 100GbE, allowing the switch to connect to higher-speed spine or aggregation infrastructure.

The 1RU form factor helps maximize rack density and is well suited for top-of-rack and leaf deployments.

Cisco lists support for up to 512,000 MAC entries, 1,792,000 IPv4 LPM routes, 896,000 IPv6 LPM routes, 16,000 VRF instances, and 128-way ECMP on the N9300-FX3 platform.

Cisco's N9300-FX3 documentation identifies the three port configurations above.

Choose N9K-C9348GC-FX3 when you need many 1G copper access ports but still want 10G/25G and 40G/100G uplink capability.

Choose N9K-C93108TC-FX3 when your servers require 10GBASE-T copper connectivity.

Choose N9K-C93180YC-FX3 when your server infrastructure is primarily fiber/SFP28 and 25GbE is an important requirement.

The N9K-C9348GC-FX3 is a Cisco Nexus 9300-FX3 Series 1RU data center switch with 48 × 100M/1G BASE-T ports, 4 × 10/25G SFP28 ports, and 2 × 40/100G QSFP28 ports.

It has 54 Ethernet interfaces in total: 48 × 100M/1G BASE-T, 4 × 10/25G SFP28, and 2 × 40/100G QSFP28.

Yes. Its four SFP28 uplink ports can operate at 10GbE or 25GbE, depending on the supported optic and configuration.

Yes. The two QSFP28 uplink ports support 40GbE and 100GbE connectivity.

Yes. It is particularly attractive when a deployment needs a high density of 1G copper access ports while providing a migration path to 10G, 25G, 40G, and 100G uplinks.

The biggest difference is the downlink speed. The N9K-C9348GC-FX3 provides 48 × 100M/1G BASE-T ports, while the N9K-C93108TC-FX3 provides 48 × 100M/1/10GBASE-T ports. The C93108TC-FX3 is therefore better suited to 10GBASE-T server access.

Yes. Cisco identifies the platform as suitable for flexible connectivity in spine-leaf and ACI data center deployments.

For a professional network hardware purchase, suppliers can provide pre-shipment hardware testing, configuration/compatibility verification, packing inspection, shipping support, and technical assistance. Warranty terms should be clearly confirmed before purchase, especially for new, refurbished, or used equipment.

Cisco's hardware specifications list multiple compatible power-supply options, including AC and DC configurations, with two PSU positions for operation and redundancy. The exact PSU configuration should be confirmed against the specific product SKU before ordering.