QFX5100-48T Juniper QFX5100 48-port 10GBASE-T Switch
Juniper QFX5100-48T 10GBASE-T Switch
High-Performance 10GbE Data Center Access Switch
The Juniper Networks QFX5100-48T Data Center Switch is a high-performance, low-latency 10GBASE-T switching solution designed for data center access, server connectivity, and leaf deployments. With a compact 1RU form factor, this switch provides exceptional flexibility, scalability, and performance for modern virtualized and cloud environments.
Featuring 48 × 10GBASE-T RJ45 ports, the QFX5100-48T supports 100 Mbps, 1 Gbps, and 10 Gbps auto-negotiation, allowing seamless integration with existing copper infrastructure while enabling a smooth migration to high-speed 10GbE networks. It also includes 6 × 40GbE QSFP+ uplink ports, which can be used as high-speed uplinks or broken out into additional 10GbE interfaces, supporting up to 72 × 10GbE ports in total.
With a switching capacity of 1.44 Tbps and a forwarding rate of 1.08 Bpps, the QFX5100-48T delivers consistent wire-rate performance for data-intensive workloads. Its low latency (<3 microseconds) makes it ideal for performance-sensitive applications such as virtualization, real-time analytics, and high-performance computing.
Built for modern data center architectures, the switch supports advanced technologies including EVPN-VXLAN for scalable network virtualization, Virtual Chassis Fabric (VCF) for simplified fabric management, and full Layer 2/Layer 3 functionality with protocols such as BGP, OSPF, and IS-IS.
Designed for operational efficiency and high availability, the QFX5100-48T includes dual hot-swappable power supplies, N+1 redundant fans, and Unified In-Service Software Upgrade (ISSU) for zero-downtime maintenance. It also supports automation and programmability with Python, Zero Touch Provisioning (ZTP), and integration with Ansible and Puppet, enabling streamlined network deployment and management.
Fully integrated with Junos OS, the Juniper QFX5100-48T offers a scalable, reliable, and future-ready switching platform for organizations seeking to modernize their data center networks while leveraging existing copper cabling infrastructure.
Product Specifications – Juniper Networks QFX5100-48T 48-Port 10GBASE-T Data Center Switch
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| Specification | Details |
|---|---|
| Product Name | Juniper Networks QFX5100-48T Data Center Switch |
| Manufacturer | Juniper Networks |
| Part Number | QFX5100-48T |
| Product Type | Fixed-Configuration Data Center Switch |
| Switch Series | Juniper QFX5100 Series |
| Deployment Type | Data Center Access, Leaf, Server Connectivity |
| Form Factor | 1 Rack Unit (1RU) |
| Fixed Copper Ports | 48 × 10GBASE-T (RJ45) |
| Port Speeds Supported | 100 Mbps, 1 Gbps, 10 Gbps (Auto-negotiation) |
| Uplink Ports | 6 × 40GbE QSFP+ |
| Breakout Capability | QSFP+ supports 4 × 10GbE breakout |
| Maximum 10GbE Density | Up to 72 × 10GbE ports |
| Switching Capacity | Up to 1.44 Tbps |
| Forwarding Rate | Up to 1.08 Billion Packets per Second (Bpps) |
| Latency | < 3 microseconds |
| Switching Architecture | Low-latency cut-through switching |
| Operating System | Junos OS |
| Virtual Chassis Support | Yes |
| Virtual Chassis Fabric (VCF) | Supported |
| EVPN-VXLAN Support | Yes (VTEP functionality) |
| VXLAN Capability | Hardware-based VXLAN support |
| Routing Protocols | BGP, OSPF, IS-IS, Static Routing |
| Multicast Support | IGMP, PIM-SM, PIM-SSM |
| QoS Support | Advanced QoS with traffic classification and scheduling |
| Automation Support | Python, Ansible, Puppet, ZTP (Zero Touch Provisioning) |
| Software Upgrade | Unified ISSU (In-Service Software Upgrade) |
| Network Virtualization | VMware NSX, OpenContrail integration |
| Security Features | ACLs, MACsec support, DHCP Snooping, ARP Inspection |
| Redundancy | Dual hot-swappable AC or DC power supplies |
| Cooling System | N+1 redundant fan trays |
| Airflow Options | Front-to-Back (AFO) or Back-to-Front (AFI) |
| Jumbo Frame Support | Up to 9,216 bytes |
| Power Consumption | ~350–450 W (depending on configuration) |
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | -40°C to 70°C |
| Rack Mounting | Standard 19-inch rack |
| High Availability | Carrier-grade reliability with failover support |
| Use Cases | Data center leaf, server access, virtualization, cloud networking |
FAQs:
Q1. What type of cabling is required for 10GbE on the RJ45 ports?
To achieve 10GbE speeds over copper, Category 6a (up to 100m) or Category 7 cabling is recommended. Standard Category 6 can support 10GbE over shorter distances (up to 55m).
Q2. Can I use the 40GbE ports for stacking?
Yes. The QSFP+ ports can be configured as Virtual Chassis Ports (VCPs) to interconnect multiple QFX5100 switches into a single management entity.
Q3. Does this switch support 1GbE transceivers?
The 48 main ports are copper RJ45 and support 100M/1G/10G speeds. The 6 QSFP+ ports require transceivers or DAC cables and primarily support 40GbE or 4x10GbE breakout.
Q4. Are the power supplies hot-swappable?
Yes, the QFX5100-48T features dual, load-sharing, hot-swappable power supplies for high availability.
Q5. Is the airflow direction field-reversible?
While the fan modules and power supplies are replaceable, the airflow direction is determined by the specific SKU ordered (AFI or AFO). It is not recommended to mix AFI and AFO components in the same chassis.
