Meet the foundation of your AI data center. The QFX5240 Switch leverages Broadcom Tomahawk 5 silicon to provide 800GbE—twice the capacity of the previous generation. It’s built for the advanced networking requirements of large-scale clusters, and works with Juniper Apstra automation to assure daily operation in AI and ML workload training and access. QFX5240 Switches deliver high-density 800GbE ports in a 2U fixed form factor with software to provide advanced network services tuned to the specific needs of AI/ML workloads. As a cornerstone of AI networks, these switches deliver fast job completion time (JCT) to accelerate training through high GPU utilization.
The QFX5240 helps reduce the number of network nodes deployed—decreasing the total power consumption of the data center fabric and improving the carbon footprint of the data center. These improvements are possible by having different breakout options like 128x400GbE and 256x200GbE/100GbE.
Table 1. QFX5240 System Capacity
Parameter | QFX5240-64OD | QFX5240-64QD |
System throughput | 51.2/102.4 Tbps uni/bidirectional | 51.2/102.4 Tbps uni/bidirectional |
Max Forwarding Rate | 21.2Bpps unidirectional | 21.2Bpps unidirectional |
Port density | 64 ports of OSFP 800GbE | 64 ports of QSFP-DD 800GbE |
Max ports with breakout | 64 × 800GbE, 128 × 400GbE, 256 × 100GbE | 64 × 800GbE, 128 × 400GbE, 256 × 100GbE, 256x50GbE |
Dimensions (W x H x D) | 17.26 x 3.46 x 25.52 in (43.8 x 8.8 x 64.8 cm) | 17.26 x 3.46 x 25.52 in (43.8 x 8.8 x 64.8 cm) |
Rack units | 2 U | 2 U |
Weight | 22kgs (48.50lbs) fully loaded without optics | 22kgs (48.50lbs) fully loaded without optics |
Operating system | Junos OS Evolved | Junos OS Evolved |
CPU | Intel Ice Lake (4 core) | Intel Ice Lake (4 core) |
Memory | 32GB (16GBx2) of DDR4 | 32GB (16GBx2) of DDR4 |
Storage | 2x480GB | 2x480GB |
Power | Redundant (1+1) hot-pluggable 3000W AC (200 to 240V) power supplies | Redundant (1+1) hot-pluggable 3000W AC (200 to 240V) power supplies |
Cooling | Ports-to-FRUs (AFO) | Ports-to-FRUs (AFO) |
Total packet buffer | 165 MB | 165 MB |
Warranty | Juniper standard one-year warranty | Juniper standard one-year warranty |
Table 1. QFX5240 Series Switches Specifications
Product Number | Description |
Form factor | Fixed 2 U |
Dimensions (W x H x D) | 17.26 x 3.46 x 25.52 in (43.8 x 8.8 x 64.8 cm) |
Switching capacity | 51.2/102.4 Tbps uni/bidirectional / 21.2 Bpps unidirectional |
Port densities(10/25/40/50/100/400GbE) | QFX5240-64OD: 64 ports of OSFP 800GbE QFX5240-64QD: 64 ports of QSFP-DD 800GbE |
Power consumption | Redundant (1+1) hot-pluggable 3000W AC (200 to 240V) power supplies. Typical power draw: 932-Watt 100% traffic with DACs (without optics power) at 25C |
Buffer capacity | 165 MB |
MAC addresses | 136,000 |
IPv4 unicast/multicast routes | 860,000 |
IPv6 unicast/multicast routes | 360,000 |
Number of VLANs | 4,000 |
ARP entries | 32,000 |
Latency | 700-750ns |
Table 1. QFX5240 Series Switches Ordering Information
Product SKU | Description |
Switches | |
QFX5240-64OD-AO | 64x800GE OSFP800, AC, Front-to-back airflow |
QFX5240-64OD-CHAS | 64x800GE OSFP800, spare chassis |
QFX5240-64QD-AO | 64x800GE QSFP-DD 800, AC, Front-to-back airflow |
QFX5240-64QD-CHAS | 64x800GE QSFP-DD 800, spare chassis |
License SKUs | |
S-QFX5K-C5-A1-X (X=3,5,P) | Advanced 1 Software License (X Years Subscription, X=3,5, or P for Perpetual) for QFX5240-64OD/QD |
S-QFX5K-C5-A2-X (X=3,5,P) | Advanced 2 Software License (X Years Subscription, X=1,3,5, or P for Perpetual) for QFX5240-64OD/QD |
S-QFX5K-C5-P1-X (X=3,5,P) | Premium Software License (X Years Subscription, X=1,3,5, or P for Perpetual) for QFX5240-64OD/QD |
