Description
The QFX5120 Switch delivers low latency, rich Layer 2 and Layer 3 features, and advanced EVPN- VXLAN capabilities, making it an ideal data center top-of-rack and aggregation switch for enterprise multicloud deployments.
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The QFX5120 Switch delivers low latency, rich Layer 2 and Layer 3 features, and advanced EVPN- VXLAN capabilities, making it an ideal data center top-of-rack and aggregation switch for enterprise multicloud deployments.
Featuring Layer 3 gateway capabilities for routing between virtualized and bare-metal servers, the QFX5120 is designed for extremely agile data centers that require support for overlay/ underlay network architectures. Native 25GbE with 100GbE uplink ports on the QFX5120-48Y, combined with 32 ports of 100GbE on the QFX5120-32C, make the QFX5120 family ideal for leaf-and-spine network deployments.
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The QFX5120 Switch delivers low latency, rich Layer 2 and Layer 3 features, and advanced EVPN- VXLAN capabilities, making it an ideal data center top-of-rack and aggregation switch for enterprise multicloud deployments.
| Switch Type / Role | Data Center Leaf / Campus Distribution Switch |
| Downlink Ports | 48 × 25 GbE (SFP28) / 10 GbE (SFP+) / 1 GbE (SFP) |
| Uplink Ports | 8 × 100 GbE (QSFP28) / 40 GbE (QSFP+) |
| Throughput (Fabric Capacity) | Up to 2 Tbps (unidirectional) / 4 Tbps (bidirectional) |
| Latency | As low as ≈ 800 ns |
| CPU / Memory / Storage | 2.2 GHz quad-core Intel CPU, 16 GB RAM, 50 GB SSD |
| Breakout Capability | 100G → 4×25G, 40G → 4×10G |
| Switching Modes | Cut-through and Store-and-Forward |
| Forwarding / Tables | 291K MAC addresses, up to 351K L3 prefixes |
| Buffer Memory | 32 MB shared buffer (configurable) |
| Software & Protocols | Junos OS, EVPN-VXLAN, MPLS, L3 VPN, Automation (Python, ZTP) |
| Virtual Chassis | Supported (multiple switches act as one) |
| Power Consumption | Max ≈ 283 W, Typical ≈ 155 W |
| Dimensions (H × W × D) | 1.72 × 17.36 × 20.48 in (4.37 × 44.09 × 52.02 cm) |
| Weight | ≈ 10.75 kg (23.7 lb) |
| Cooling / Airflow | Redundant AC PSUs, front-to-back or back-to-front airflow |
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