Juniper QFX5120-48T-AFI 48x10GBASE-T 6x100G Switch
$14,080.35List price: $37,648.00
Available direct from Juniper Ask us for current lead time
We'll confirm price and lead time for your quantity. Or call (984) 225-1600.
A copper 10GbE switch with 48 RJ-45 ports and six 100GbE QSFP28 uplinks, for data-center and campus networks. This AC AFI configuration uses back-to-front airflow.
Support & Licensing for the QFX5120-48T-AFI
The QFX5120-48T-AFI ships with Juniper's base software. Most buyers add Juniper Care support; routing protocols such as BGP and OSPF, and EVPN-VXLAN fabrics, need one of the license tiers below. Not sure what you need? Call (984) 225-1600 or request a quote and we'll spec it with you.
1Juniper Care support recommended
A support contract from Juniper for the QFX5120-48T-AFI. Every level includes 24/7 tech support and software updates; they differ in how fast a failed part is replaced.
- Core24/7 Juniper tech support (JTAC) and software updates. No hardware replacement.SVC-COR-QFX51-48T$1,359 / yr
- Core PlusCore, plus repair or replacement shipped within 10 business days of Juniper receiving the failed part.SVC-CP-QFX51-48T$1,528 / yr
- Next DayCore, plus a replacement part delivered the next business day (RMA issued by 3 p.m. local time).SVC-ND-QFX51-48T$1,700 / yr
- Same DayCore, plus a replacement part delivered within 4 hours, 24/7.SVC-SD-QFX51-48T$2,717 / yr
More levels: onsite technician and 2-hour delivery
- Next Day OnsiteNext Day delivery, plus a technician on site to install the replacement part.SVC-NDCE-QFX51-48T$2,124 / yr
- Same Day OnsiteSame Day delivery, plus a technician on site to install the replacement part.SVC-SDCE-QFX51-48T$3,397 / yr
- Same Day 2-HourCore, plus a replacement part delivered within 2 hours, 24/7.SVC-SD2-QFX51-48T$3,533 / yr
Delivery times depend on your location. Onsite technicians handle hardware replacement; software questions go to JTAC.
2Feature license optional
Each tier includes everything in the one before it. Licenses are per switch: in a Virtual Chassis, every member needs the same license.
Base software
Included with the switch
- Layer 2 switching and VLANs
- Juniper's base Junos feature set
Included
Advanced 1
Everything in Base, plus:
- BGP, OSPF, IS-IS and RIP routing
- VRRP
- Virtual Chassis stacking
- Filter-based forwarding and GRE tunnels
- sFlow monitoring
Subscription Pay per termS-QFX5K-C1-A1-3/5
Perpetual One-time purchaseS-QFX5K-C1-A1-P
Advanced 2
Everything in Advanced 1, plus:
- EVPN-VXLAN data center fabric
- ESI-LAG multihoming
- Multicast routing (PIM, IGMP)
- PTP and SyncE timing
- Static MPLS
- Group-based policy and microsegmentation
Subscription Pay per termS-QFX5K-C1-A2-3/5
Perpetual One-time purchaseS-QFX5K-C1-A2-P
Premium 1
Everything in Advanced 2, plus:
- EVPN-MPLS
- L3 VPN and L2 circuits
- LDP and RSVP
- Segment routing
Subscription Pay per termS-QFX5K-C1-P1-3/5
Perpetual One-time purchaseS-QFX5K-C1-P1-P
About the QFX5120-48T-AFI
The QFX5120-48T-AFI provides copper 10GbE connections through 48 RJ-45 ports, with six 100GbE QSFP28 uplinks for data-center and campus switching. It uses AC power and back-to-front airflow, taking air in at the power-supply side. It runs Junos OS and supports two members managed together as a Virtual Chassis.
What’s included
- QFX5120-48T-AFI copper 10GbE switch with AC power and back-to-front airflow
- Base software features
- AC power supply
Sold separately
- Advanced and Premium licenses and Juniper Care, listed in Support & Licensing above
Choosing a version
- QFX5120-48T-AFI (this page): AC power, back-to-front airflow
- QFX5120-48T-AFI-T: AC power, back-to-front airflow, TAA-compliant
- QFX5120-48T-AFO: AC power, front-to-back airflow
- QFX5120-48T-AFO-T: AC power, front-to-back airflow, TAA-compliant
- QFX5120-48T-DC-AFI: DC power, back-to-front airflow
- QFX5120-48T-DC-AFO: DC power, front-to-back airflow
Related models: QFX5120-32C-AFI, QFX5120-48Y-AFI-T.
Not sure which version you need? Call (984) 225-1600 or request a quote and we’ll check it against your rack and network.
QFX5120-48T-AFI specifications
| Network ports | 48x RJ-45, 6x QSFP28 uplink |
|---|---|
| Throughput (bidirectional) | 2160 Gbps |
| Forwarding rate | 1 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) | 24.25 lb / 11 kg |
| Airflow | Back-to-front |
| Power supplies | 2x JPSU-650W-AC-AI (1+1 redundant, hot-swappable) |
| Max power draw (AC) | 251 W |
| Fans | 5x QFX5110-FANAFI (4+1 redundant, hot-swappable) |
| CPU | 2.2 GHz quad-core Intel |
| Memory | 16 GB |
| Storage | 100 GB SSD |
| Virtual Chassis | Up to 2 members |
| MAC addresses (thousands) | 288 |
| IPv4 routes (thousands) | 2000 |
| Operating temperature | 32° through 104° F / 0° through 40° C |
| Operating system | Junos OS |
Full specifications (66)
Network ports
| RJ-45 Ports | 48 |
|---|
Management and other ports
| Console Ports | 1 |
|---|---|
| Console Port Type | RJ-45 |
| Management Ports | 1 |
| Management Port Type | RJ-45 |
| USB Ports | 1 |
| USB Port Type | Type A |
| Uplink Ports | 6 |
| Uplink Port Type | QSFP28 |
| 10 MHz Port | Yes |
| PPS 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 |
| Chassis depth (with power supplies and fans) | 22.7 in / 57.658 cm |
| Weight (fully loaded) | 24.25 lb / 11 kg |
Power
| Power supplies | 2 |
|---|---|
| Power supply redundancy | 1+1 |
| Power supply airflow | Back-to-front |
| Hot-swappable power supplies | Yes |
| AC power supply model | JPSU-650W-AC-AI |
| AC Max Power Consumption | 251 W |
| AC Average Power Consumption | 205 W |
Cooling
| Airflow Direction | Back-to-front |
|---|---|
| Airflow Volume | 132 CFM |
| Fan module model | QFX5110-FANAFI |
| Fan modules | 5 |
| Fan redundancy | 4+1 |
| Hot-swappable fans | Yes |
Processor
| CPU | 2.2 GHz quad-core Intel |
|---|---|
| Memory (DRAM) | 16 GB |
Storage
| Internal Storage Size | 100 GB |
|---|---|
| Internal Storage Type | SSD |
High availability
| Virtual Chassis members (max) | 2 |
|---|
Switching and routing scale
| Throughput (Bidirectional) | 2160 Gbps |
|---|---|
| Throughput (Unidirectional) | 1080 Gbps |
| Forwarding Capacity | 1 Bpps |
| IPv4 Unicast Host Routes (thousands) | 211 |
| IPv4 Unicast Routes Prefixes (RIB) (thousands) | 2000 |
| IPv4 Unicast Routes Prefixes (FIB) (thousands) | 351 |
| IPv4 Unicast ECMP Paths | 64 |
| IPv4 Multicast Routes (thousands) | 106 |
| IPv6 Unicast Host Routes (thousands) | 106 |
| IPv6 Unicast Routes Prefixes (RIB) (thousands) | 500 |
| IPv6 Unicast Routes Prefixes (FIB) (thousands) | 172 |
| IPv6 Multicast Routes (thousands) | 52 |
| ARP Entries (thousands) | 64 |
| MSTP Instances | 64 |
| VSTP Instances | 509 |
| Link aggregation groups (LAGs) | 64 |
| Ports Per LAG | 64 |
| MAC Addresses Per System (thousands) | 288 |
| Maximum Mirroring Sessions | 4 |
| Traffic Mirroring Destination VLANs | 4 |
| Traffic Mirroring Destination Ports | 4 |
| VLAN IDs | 4094 |
| Jumbo Frame | 9216 bytes |
Environmental
| Operating Temperature | 32° through 104° F / 0° through 40° C |
|---|---|
| Storage Temperature | -40° through 158° F / -40° through 70° C |
| Operating Altitude | 6000 ft / 1828 m |
| Humidity, operating (noncondensing) | 5% through 90% |
| Humidity, non-operating (noncondensing) | 0% through 95% |
| Maintenance Clearance | 30 in / 76.2 cm |
Software
| Operating system | Junos OS |
|---|
Common questions
Which direction does air travel through the chassis?
Air enters at the power-supply side and leaves at the port side, which is back-to-front cooling. A fully loaded unit draws up to 251 W on AC.
Can two copper 48T switches share management?
Yes. This model supports a two-member Virtual Chassis for shared switch management.
Is a tier license required for basic use?
No. You can run the standard software without one on the 48x RJ-45, 6x QSFP28 uplink ports, and add Advanced 1, Advanced 2 and Premium 1 later from Support & Licensing above. Juniper Care is offered too.
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