About the QFX5110-48S-AFI2
The QFX5110-48S-AFI2 provides the SFP+ access layout in the QFX5110 family, with 48 SFP+ ports and four QSFP28 connections. It serves data-center access and aggregation using AC power and back-to-front airflow. It runs Junos OS with base features, and AFI2 is the current part number for the earlier AFI hardware.
What’s included
- QFX5110-48S-AFI2 SFP+ switch with AC power and back-to-front airflow
- Base software features
Sold separately
- Advanced and Premium licenses and Juniper Care, listed in Support & Licensing above
Choosing a version
- QFX5110-48S-AFI2 (this page): AC power, back-to-front airflow
- QFX5110-48S-AFI-T2: AC power, back-to-front airflow, TAA-compliant
- 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
- QFX5110-48S-D-AFO2: DC power, front-to-back 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-AFI2 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) | 23 lb / 10.43 kg |
| Airflow | Back-to-front |
| Power supplies | 2x JPSU-650W-AC-AFI (1+1 redundant) |
| Max power draw (AC) | 226 W |
| Fans | 5x QFX5110-FANAFI (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) | 23 lb / 10.43 kg |
Power
| Power supplies | 2 |
|---|---|
| Power supply redundancy | 1+1 |
| Power supply airflow | Back-to-front |
| AC power supply model | JPSU-650W-AC-AFI |
| AC Max Power Consumption | 226 W |
| AC Average Power Consumption | 167 W |
Cooling
| Airflow Direction | Back-to-front |
|---|---|
| Airflow Volume | 155 CFM |
| Fan module model | QFX5110-FANAFI |
| 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
Is this front-to-back or back-to-front?
It is back-to-front, so air enters at the power-supply side and leaves at the port side. Listed power: 2x JPSU-650W-AC-AFI.
Does it work out of the box without a license?
Yes. The standard software provides many features without a tier license on the 48x SFP+, 4x QSFP28 ports; Advanced 1, Advanced 2 and Cloud-based threat feeds are add-ons, listed in Support & Licensing above. Juniper Care is offered too.
Did the hardware change with the AFI2 and AFO2 part numbers?
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-AC-AFI.


