About the QFX5110-48S-D-AFO2
The DC-powered QFX5110-48S-D-AFO2 provides 48 SFP+ ports and four QSFP28 connections with front-to-back airflow. It serves data-center access and aggregation roles using Junos OS and base software features. The AFO2 part number is the current format for the same hardware as the earlier AFO version.
What’s included
- QFX5110-48S-D-AFO2 SFP+ switch with DC input and front-to-back airflow
- Base software features
Sold separately
- Advanced and Premium licenses and Juniper Care, listed in Support & Licensing above
Choosing a version
- QFX5110-48S-D-AFO2 (this page): DC power, front-to-back airflow
- QFX5110-48S-AFI-T2: AC power, back-to-front airflow, TAA-compliant
- QFX5110-48S-AFI2: AC power, back-to-front airflow
- QFX5110-48S-AFO-T2: AC power, front-to-back airflow, TAA-compliant
- QFX5110-48S-AFO2: AC power, front-to-back airflow
- QFX5110-48S-D-AFI2: DC power, back-to-front airflow
Related models: QFX5110-32Q-AFI-T2, QFX5120-32C-AFI.
Not sure which version you need? Call (984) 225-1600 or request a quote and we’ll check it against your rack and network.
QFX5110-48S-D-AFO2 specifications
| Network ports | 48x SFP+, 4x QSFP28 |
|---|---|
| Throughput (bidirectional) | 1760 Gbps |
| Forwarding rate | 1.32 Bpps |
| Form factor | 1U, fixed chassis |
| Dimensions (H x W x D) | 1.72 x 17.36 x 20.48 in (4.4 x 44.1 x 52 cm) |
| Weight (fully loaded) | 24.6 lb / 11.16 kg |
| Airflow | Front-to-back |
| Power supplies | 2x JPSU-650W-DC-AFO (1+1 redundant) |
| Max power draw (DC) | 248 W |
| Fans | 5x QFX5110-FANAFO (hot-swappable) |
| CPU | 1.8 GHz quad-core Intel |
| Memory | 16 GB |
| Storage | 64 GB SSD |
| MAC addresses (thousands) | 288 |
| IPv4 routes (thousands) | 128 |
| Operating temperature | 32° through 104° F / 0° through 40° C |
| Operating system | Junos OS |
Full specifications (62)
Network ports
| SFP+ Ports | 48 |
|---|---|
| QSFP28 Ports | 4 |
| QSFP28 Port Channelization | Yes |
Management and other ports
| Console Ports | 1 |
|---|---|
| Console Port Type | RJ-45 |
| Management Ports | 3 |
| Management Port Type | RJ-45, SFP, SFP |
| USB Ports | 1 |
| USB Port Type | Type A |
| 10 MHz Port | Yes |
| PPS Port | Yes |
| PTP Port | Yes |
Chassis
| Chassis type | Fixed |
|---|---|
| Form Factor | 1U |
| Chassis Height | 1.72 in / 4.3688 cm |
| Chassis Width | 17.36 in / 44.0944 cm |
| Chassis Depth | 20.48 in / 52.0192 cm |
| Weight (fully loaded) | 24.6 lb / 11.16 kg |
Power
| Power supplies | 2 |
|---|---|
| Power supply redundancy | 1+1 |
| Power supply airflow | Front-to-back |
| DC power supply model | JPSU-650W-DC-AFO |
| DC Max Power Consumption | 248 W |
| DC Average Power Consumption | 190 W |
Cooling
| Airflow Direction | Front-to-back |
|---|---|
| Airflow Volume | 155 CFM |
| Fan module model | QFX5110-FANAFO |
| Fan modules | 5 |
| Hot-swappable fans | Yes |
Processor
| CPU | 1.8 GHz quad-core Intel |
|---|---|
| Memory (DRAM) | 16 GB |
Storage
| Internal Storage Size | 64 GB |
|---|---|
| Internal Storage Type | SSD |
Switching and routing scale
| Throughput (Bidirectional) | 1760 Gbps |
|---|---|
| Forwarding Capacity | 1.32 Bpps |
| IPv4 Unicast Host Routes (thousands) | 208 |
| IPv4 Unicast Routes Prefixes (RIB) (thousands) | 128 |
| IPv4 Multicast Routes (thousands) | 104 |
| IPv6 Unicast Routes Prefixes (RIB) (thousands) | 84 |
| IPv6 Multicast Routes (thousands) | 52 |
| Firewall Filters (Ingress) | 6142 |
| Firewall Filters (Egress) | 1022 |
| ARP Entries (thousands) | 48 |
| MSTP Instances | 64 |
| VSTP Instances | 253 |
| Link aggregation groups (LAGs) | 104 |
| Ports Per LAG | 32 |
| MAC Addresses Per System (thousands) | 288 |
| Maximum Mirroring Sessions | 4 |
| Traffic Mirroring Destination VLANs | 4 |
| Traffic Mirroring Destination Ports | 4 |
| VLAN IDs | 4093 |
| Jumbo Frame | 9216 bytes |
| Total Packet Buffer | 0.016 GB |
| Maximum VRF Instances | 4000 |
Environmental
| Operating Temperature | 32° through 104° F / 0° through 40° C |
|---|---|
| Storage Temperature | -40° through 158° F / -40° through 70° C |
| Operating Altitude | 6562 ft / 2000 m |
| Humidity, operating (noncondensing) | 5% through 90% |
| Seismic Tolerance | Zone 4 |
| Maintenance Clearance | 30 in / 76.2 cm |
Software
| Operating system | Junos OS |
|---|
Common questions
What rack layout does this airflow suit?
It suits racks set up for front-to-back cooling: air enters at the port side and leaves at the power-supply side. It carries 48x SFP+, 4x QSFP28.
Which licenses can I add to it?
None are required. Add-on tiers include Advanced 1, Advanced 2 and Cloud-based threat feeds, shown in Support & Licensing above. Juniper Care is offered too.
Is this the same switch as the earlier AFI or AFO model?
Same hardware.. Juniper’s AFI2 and AFO2 part numbers cover the same hardware as the earlier AFI and AFO versions. It has 48x SFP+, 4x QSFP28 and 2x JPSU-650W-DC-AFO.


