Front-panel identity
Request the exact model and revision label plus a straight-on port photograph. Compare the physical port groups and uplinks with the matching manufacturer drawing.
Juniper · Networking
Juniper QFX5120-48Y
48-port 1/10/25GbE SFP28 switch with 8 40/100GbE QSFP28 ports.
Plan uplinks and software for this exact model. Hardware condition, included modules and current availability will be confirmed in your quotation.
QFX5120 · port-by-port planning
Every switch. Every connection.
Build a device-specific port plan, check software entitlements and keep inter-member links separate from data connections.
Network platform
Deployment environment
Redundancy design
Required network functions
Select the functions required on the listed switches. IFA terminating roles are assigned separately per switch. Advanced, Premium, MACsec, telemetry and support are separate choices.
Switch 1 · QFX5120-48Y
48-port 1/10/25GbE SFP28 switch with 8 40/100GbE QSFP28 ports.
Complete chassis ordering variant
Installed licensing scheme
IFA role on this switch
Hardware introduction: Junos 18.3R1. Virtual Chassis: 19.3R1, up to 2 same-model members. These are introduction versions, not software recommendations.
Physical port allocation
Select a numbered port to assign its rate and role. This is a logical port map, not a front-panel photograph. Management and console ports are excluded.
Port 0 · SFP28 · speed group 0
Port mode
Connection role
Software & support · switch 1
Find an entitlement by function
Add a complete SKU
Advanced 2 includes its listed Advanced 1 features; Premium 1 includes the listed lower tiers. MACsec and ATF are separate add-ons. Support services do not grant network functions. Selecting a SKU does not activate it.
Power & cooling
2 PSU positions · 5 fan positions. List installed or requested components; shipping contents are not automatically added to your order.
Power supplies
Fans
Related original part numbers · confirm exact variant
- EX-4PST-RMK · rack mount kit
- EX-RMK · rack mount kit
- JPSU-650W-AC-AO · power supply
- JPSU-650W-AC-AI · power supply
- JPSU-650W-DC-AFO · power supply
- JPSU-650W-DC-AFI · power supply
- QFX5110-FANAFO · fan
- QFX5110-FANAFI · fan
- JNP-4PST-RMK-1U-E · rack mount kit
- QFX-SFP-1GE-T · copper transceiver
These are model references, not automatic replacement approvals. Confirm the exact chassis, airflow and supplied components.
Your network plan
Actual member allocations, not a template multiplied by the switch count. Port-rate sums below are not switching capacity or guaranteed throughput.
Switch 1
QFX5120-48Y
- Allocated physical cages
- 0
- Data / uplink interfaces
- 0
- Data rate sum · Gb/s
- 0
- Reserved VCP rate · Gb/s
- 0
- Unallocated cages
- 56
| From | Role | Port mode | To / far end |
|---|
Planning checks only. Confirm the complete hardware, optical links, software entitlements and design before ordering.
Review · Switch 1: Confirm the exact Junos release.
Review · Switch 1: Allocate each access, uplink and inter-member connection.
Review · Switch 1: Confirm the complete chassis ordering variant, PSU and fan PNs, cooling and power arrangement. Matching attributes are not final compatibility approval.
Review items will accompany the enquiry.
Ports & connection options
- Manufacturer
- Juniper
- Model
- QFX5120-48Y
- Physical network ports
- 56 cages; management and console interfaces excluded.
- SFP28 ports
- 48 ports; panel 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47. Native rates 1 / 10 / 25 GbE.
- QSFP28 ports
- 8 ports; panel 48, 49, 50, 51, 52, 53, 54, 55. Native rates 40 / 100 GbE.
- 4 × 10 GbE breakout
- Panel ports 48, 49, 50, 51, 52, 53, 54, 55. Confirm optics, cable, lane mapping and software.
- 4 × 25 GbE breakout
- Panel ports 48, 49, 50, 51, 52, 53, 54, 55. Confirm optics, cable, lane mapping and software.
- 2 × 50 GbE breakout
- Not supported on this model.
- Virtual Chassis
- Up to 2 same-model switches; introduced in Junos OS 19.3R1. Allocate native 40G / 100G VCP ports per member.
- Data-center EVPN-VXLAN
- Use standalone switches; QFX5120 Virtual Chassis is excluded from this data-center design.
- Power and cooling positions
- 2 power supplies and 5 fans. Confirm the exact ordering variant; do not mix AC/DC input or airflow directions.
- Software introduction
- Junos OS 18.3R1; feature minimums and current maintenance-release support require separate confirmation.
Listed interface rates are not a throughput guarantee. Confirm optics, cable type, FEC, breakout support and software release for the intended links.
Software & support SKUs
Expand an option for its functions, term and ordering requirements. Support services do not grant software features.
More Juniper models
PHOTOGRAPHS THAT SUPPORT YOUR RFQ
Check the ports, power and accessories.
Attach a photo brief to the request for Juniper QFX5120-48Y. This is a checklist to agree, not a record that inspection has already been performed.
Rear-panel configuration
Request PSU, fan and airflow labels, AC or DC input details, rack ears and included optics or cables. Record exclusions as separate line items.
Evidence without a staged monitor
Product photography should show the standalone device, with no boot monitor. Request console or management records separately where appropriate, with private identifiers shared through the agreed channel.
