PACKETPERF

Primary Device

Juniper Networks QFX5240
Juniper Networks QFX5240
★ 3.3 Value Score

Technical Specifications

  • Switching Capacity: 51.2 Tbps unidirectional (51,200 Gbps, per Juniper HCT for QFX5240-64QD)
  • Forwarding Rate: Not published on Juniper's spec pages; 64-byte line rate is roughly 76 Bpps by calculation, not a vendor figure
  • Ports (breakdown): QFX5240-64QD: 64 x 800GbE QSFP-DD (QSFP56-DD) + 2 x SFP+ 10G + 1 x RJ-45 console + 1 x RJ-45 management + 1 x USB-A + 10 MHz/PPS/ToD timing ports. QFX5240-64OD: 64 x 800GbE OSFP + 2 x SFP+ 10G (plus management/console)
  • PoE Budget: N/A (data center switch, no PoE)
  • Layer: L2/L3 (IPv4/IPv6 routing, EVPN-VXLAN, IP fabric)
  • Stacking Support: No traditional stacking published; scales as leaf/spine/end-of-row devices in an IP fabric
  • Silicon: Broadcom Tomahawk 5
  • Operating System: Junos OS Evolved
  • Packet Buffer: 165 MB
  • IPv4 Unicast / Host Routes: 2,000K / 880K
  • IPv6 Unicast / Host Routes: 2,000K / 875K
  • MAC Addresses: 136K
  • QoS Queues per Port: 8 unicast, 2 multicast
  • Form Factor: 2U fixed chassis, 17.26 in W x 25.51 in D x 3.46 in H
  • Weight: 48.5 lb (22 kg) as shipped
  • Power Supplies: 2 hot-swappable AC PSUs (QFX5240-PWR-AC-AO), 1+1 redundant
  • Power Consumption: 576 W AC average; 2,400 W AC maximum (QFX5240-64QD, per Juniper HCT)
  • Cooling: 4 hot-swappable fan modules, front-to-back airflow, 403 CFM
  • Operating Temperature: 0 to 40 C (32 to 104 F), up to 6,000 ft
  • CPU / Memory / Storage: Intel 4-core 2.2 GHz Ice Lake, 32 GB DRAM, 960 GB SSD
  • Price Note: No official Juniper list price found. Only one USD listing: Zones, QFX5240-64QD-AO at $249,136.99. No USD price found for QFX5240-64OD; UK and Indian reseller prices are in GBP and INR and were not converted
  • Sources: https://apps.juniper.net/hct/product/QFX5240-64QD/hwspecs ; https://www.juniper.net/documentation/us/en/hardware/qfx5240/topics/topic-map/qfx5240-system-overview.html ; https://www.zones.com/site/product/index.html?id=114994799 ; https://convergedigest.com/juniper-intros-qfx-switches-based-on-broadcoms-tomahawk-5/

Curation Review

  • ✔ Pros: 51.2 Tbps switching capacity in a 2U chassis; 64 x 800GbE port density for AI/ML and high-bandwidth data center fabrics; Broadcom Tomahawk 5 silicon; large routing tables (2M IPv4/IPv6 unicast routes) and 165 MB packet buffer; redundant hot-swappable PSUs and fans with front-to-back airflow; Junos OS Evolved gives a modern, Junos-consistent management plane
  • ✘ Cons: Very high acquisition cost (about $249K for the 64QD configuration in the only USD listing found); power draw up to 2,400 W AC maximum, which needs substantial data center power and cooling; 800GbE optics and cabling add significant cost on top of the chassis; overkill for small or enterprise campus deployments and offers no PoE; Junos OS Evolved may need retraining for teams used to classic Junos; the official spec page does not publish a forwarding rate, so buyers must rely on the datasheet or Juniper sales for that figure
  • Est. Price: $249,137

Compare Against

Ubiquiti Pro Max Aggregation (USW-Pro-Max-Aggregation)
Ubiquiti Pro Max Aggregation (USW-Pro-Max-Aggregation)
★ 5.0 Value Score

Technical Specifications

  • Switching Capacity: 760 Gbps
  • Forwarding Rate: 565 Mpps
  • Ports: 28 x 10G SFP+ (10G/1G) + 4 x 25G SFP28 (25G/10G/1G)
  • PoE Budget: N/A (non-PoE switch)
  • Layer: L3 (Layer 2 features also supported)
  • Stacking: Not listed
  • Non-blocking Throughput: 380 Gbps
  • Max Power Consumption: 100 W
  • Power Input: Universal AC 100-240 V; DC input for RPS backup
  • Form Factor: 1U rack-mount (442 x 325 x 44 mm)
  • Weight: 4.6 kg without brackets

Curation Review

  • ✔ Pros: 760 Gbps switching capacity and 565 Mpps forwarding rate for aggregation duty; 28 x 10G SFP+ plus 4 x 25G SFP28 uplink ports; Layer 3 switching with Layer 2 features; DC input for redundant power backup; compact 1U rack form factor
  • ✘ Cons: No PoE, so it can't power APs or cameras directly; no stacking listed; not in stock on Ubiquiti's US store (marked 'No restock date yet'); 100 W power draw is high for a non-PoE 1U switch; price is above many 10G-only alternatives
  • Est. Price: $899 - $1,048

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