QFX5100 High-Density Data Centre Switch

High-performance, low-latency 10GbE/40GbE/100GbE top-of-rack data centre switches that act as common building blocks for multiple data centre fabrics.

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The QFX5100 line of scalable Layer 2/3 switches—including the 10/40GbE QFX5100 and the 10/40/100GbE QFX5110—is optimised for application delivery and contains a powerful feature set for virtualised data centres.

The QFX5000 series data centre switching platforms provide universal building blocks for multiple fabric architectures. They work with the Juniper mixed 1/10/40/100GbE Virtual Chassis, Virtual Chassis Fabric, and Junos Fusion architectures. The QFX5100 and QFX5110 switches also support open architectures, such as spine and leaf, Layer 3, and Open Clos IP fabrics.

QFX5000 series switches enable high-availability data centre operations by allowing unified in-service software upgrades (ISSU). They also support virtualised network environments, including Juniper Contrail and VMware NSX Layer 2 gateway services.

Seven switch models are available:

  • QFX5110-48S, a 10GbE switch with 48 SFP+ ports and four QSFP28 ports that can be configured as 40GbE or 100GbE ports.
  • QFX5110-32Q, a 40GbE switch offering 32 QSFP+ ports or 20 QSFP+ ports with four QSFP28 ports.
  • QFX5100-48S, a 10GbE switch that offers 48 dual-mode, small form-factor pluggable (SFP and SFP+) transceiver ports and six quad small form-factor pluggable plus (QSFP+) 40GbE ports.
  • QFX5100-48T, a 10GbE switch with 48 tri-speed (100 Mbps/1GbE/10GbE) RJ-45 ports and six QSFP+ ports.
  • QFX5100-24Q, a 40GbE switch that supports up to 32 QSFP+ ports.
  • QFX5100-24Q-AA, a high-performance 40GbE switch that supports an FPGA-based 4x40GbE expansion module with customisable logic for accelerating compute-intensive, latency-sensitive, and mission-critical application processing.
  • QFX5100-96S, a 10GbE switch that provides 96 dual-mode SFP and SFP+ ports and eight quad QSFP+ 40GbE ports.

For added flexibility, the QSFP+ ports on both the QFX5000 series switch models can serve as 4x10GbE ports using QSFP+ to SFP+ direct-attach copper (DAC) or QSFP+ to SFP+ fiber splitter cables and optics. Additionally, the QSFP28 ports on the QFX5110 can be configured as 4x10GbE ports using breakout cables, providing additional configuration flexibility.

In converged server-edge access environments, the switches can be deployed as standards-based Fibre Channel-over-Ethernet (FCoE) transit switches, protecting investments in existing data centre aggregation and Fibre Channel storage-area network (SAN) infrastructures.


Form Factor Fixed-configuration platform
Access Ports N/A
Dimensions (W x H x D) QFX5100-48S, -24Q, -24Q-AA: 17.4 x 1.72 x 20.5 in (44.1 x 4.4 x 52.0 cm); 1 U
QFX5100-48T: 17.4 x 1.72 x 21.5 in (44.1 x 4.4 x 54.6 cm); 1 U
QFX5100-96S: 17.4 x 3.46 x 22.4 in (44.1 x 8.8 x 57.0 cm); 2 U
QFX5110-48S and -32Q: 17.36 x 1.72 x 20.48 in (44.09 x 4.37 x 52.02 cm); 1 U
Data rate QFX5100-48S: 1.08 Bpps
QFX5100-48T: 1.08 Bpps
QFX5100-24Q: 1.44 Bpps
QFX5100-24Q-AA: 1.44 Bpps
QFX5100-96S: 1.44 Bpps
QFX5110-48S: 1.32 Bpps
QFX5110-32Q: 1.44 Bpps
Throughput QFX5100-48S: 1.44 Tbps
QFX5100-48T: 1.44 Tbps
QFX5100-24Q: 2.56 Tbps
QFX5100-24Q-AA: 2.56 Tbps
QFX5100-96S: 2.56 Tbps
QFX5110-48S: 1.76 Tbps
QFX5110-32Q: 2.56 Tbps
Port Densities QFX5100-48S: 48 1GbE/10GbE; 6 40GbE
QFX5100-48T: 48 tri-speed (100 Mbps/1GbE/10GbE); 6 40GbE
QFX5100-24Q: 24 40GbE; 2 expansion slots for 4 x 40
QFX5100-24Q-AA: 24 40GbE; 2 expansion slots for 4 x 40 or 1 double-wide slot for FPGA-based module
QFX5100-96S: 96 1GbE/10GbE; 8 40GbE
QFX5110-48S: 48 1GbE; 48 10GbE; 4 40GbE; 4 100GbE
QFX5110-32Q: 104 10GbE (with breakout cable); 32 40GbE; 20 40GbE with 4 100GbE
Maximum 10GbE Density QFX5100-48S: 72 ports (48 10GbE SFP or SFP+ ports plus 24 10GbE ports using QSFP+ to SFP+ DAC or QSFP+ to SFP+ fiber splitter cables and optics)
QFX5100-96S: 104 ports (96 10 GbE SFP or SFP+ ports plus 8 10GbE ports using 2 QSFP+ to SFP+ DAC or QSFP+ to SFP+ fiber splitter cables and optics)
QFX5110-48S: 64 ports with breakout cable
QFX5110-32Q: 104 ports with breakout cable
Maximum 40GbE Density QFX5100-48S: 6 ports
QFX5100-48T: 6 ports
QFX5100-24Q: 32 ports (with hot-swappable expansion modules)
QFX5100-24Q-AA: 32 ports (with hot-swappable expansion modules)
QFX5100-96S: 8 ports
QFX5110-48S: 4 ports
QFX5110-32Q: 32 ports
Resiliency Dual hot-swappable AC or DC power supplies for 1+1 redundancy.
Hot-swappable fan trays.
Operating System Junos OS
Traffic monitoring Port-based
LAG port
Access control list (ACL)-based
Mirror to local and remote destinations (Layer 2 over VLAN)
Quality-of-Service (QoS) Queues/port 12 (8 unicast; 4 multicast)
MAC addresses 28,000
Junbo Frames 9216 bytes
IPv4 unicast/multicast routes 208,000 / 104,000
IPv6 unicast/multicast routes 104,000 / 52,000
Number of VLANs 4,096
ARP entries 48,000