Juniper Networks

OETC Best Seller  in Networking Hardware

Juniper QFX Series QFX5100-48S - switch - 48 ports - managed - rack-mountable

Juniper Networks

Juniper QFX Series QFX5100-48S - Switch - L3 - managed - 48 x 1 Gigabit SFP/ 10 Gigabit SFP+ + 6 x 40 Gigabit QSFP+ (breakout compatible) - rack-mountable

OETC Part: JU-QFX5100-48S-AFO | MFG Part: QFX5100-48S-AFO

  • Automation

    The QFX5100 switch supports a number of features for network automation and Plug-and-Play operations. Features include zero-touch provisioning, operations and event scripts, automatic rollback, and Python scripting. The switch also offers support for integration with VMware NSX Layer 2 gateway services, puppet, and OpenStack.

  • Flexible forwarding table

    The QFX5100's flexible forwarding table (FFT) allows the hardware table to be carved into configurable partitions of Layer 2 media access control (MAC), Layer 3 host, and long prefix match (LPM) tables. In a pure L2 environment, the QFX5100 supports 288,000 MAC addresses. In L3 mode, the table can support 128,000 host entries, and in LPM mode, it can support 128,000 prefixes. Junos OS provides configurable options through a command-line interface (CLI) so that QFX5100 can be optimized for different deployment scenarios.

  • Intelligent buffer management

    The QFX5100 switch has a total of 12 MB shared buffers. While 25% of the total buffer space is dedicated, the rest is shared among all ports and is user configurable. The intelligent buffer mechanism in the QFX5100 effectively absorbs traffic bursts while providing deterministic performance, significantly increasing performance over static allocation.

  • Insight technology for analytics

    The QFX5100 provides dynamic buffer utilization monitoring and reporting with an interval of 10 milliseconds to provide microburst and latency insight. It calculates both queue depth and latency, and logs messages when configured thresholds are crossed. Interface traffic statistics can be monitored at two-second granularity. The data can be viewed via CLI, system log, or streamed to external servers for more analysis. Supported reporting formats include Java script object notification (JSON), CSV and TSV. These files can be consumed by orchestration systems, SDN controllers, or network management applications to make better network design decisions and identify network hotspots.

  • MPLS

    QFX5100 switch supports a broad set of MPLS features, including L3 VPN, IPv6 provider edge router (6PE), RSVP traffic engineering, and LDP to allow standards-based network segmentation and virtualization. The QFX5100 can be deployed as a low-latency MPLS label-switching router (LSR) or MPLS PE router in smaller scale environments. The QFX5100 is the industry's compact, low-latency, high-density, low-power switch to offer an MPLS feature set.

  • FCoE

    As a fiber channel over Ethernet (FCoE) transit switch, the QFX5100 provides an IEEE data center bridging (DCB) converged network between FCoE-enabled servers and an FCoE-enabled fiber channel storage area network (SAN). The QFX5100 offers a full-featured DCB implementation that provides strong monitoring capabilities on the top-of-rack switch for SAN and LAN administration teams to maintain clear separation of management. In addition, FCoE initiation protocol (FIP) snooping provides perimeter protection, ensuring that the presence of an Ethernet layer does not impact existing SAN security policies. FCoE link aggregation group (LAG) active/active support is available to achieve resilient (dual-rail) FCoE connectivity.

  • Rich automation capabilities with support for Python, Chef, Puppet, and zero-touch provisioning (ZTP)

  • Plug-and-Play deployable architectures

  • Support for standards-based network virtualization protocols

  • Advanced Junos OS features such as BGP add-path, MPLS, L3 VPN, and IPv6 6PE

The highly flexible, high-performance Juniper Networks QFX5100 line of switches provides the foundation for the dynamic data center. As a critical enabler for IT transformation, the data center network supports cloud and software-defined networking (SDN) adoption, as well as rapid deployment and delivery of applications. Mission-critical applications, network virtualization, and integrated or scale-out storage are driving the need for more adaptable networks. With its diverse set of deployment options, including fabric, Layer 3, and spine and leaf, the QFX5100 is the universal building block for data center switching architectures, enabling users to easily adapt as requirements change over time.

Featuring a built-in Insight technology capability, the QFX5100 provides valuable performance and troubleshooting data via microburst monitoring and hotspot statistics. The QFX5100 can also be used as a high-performance QFabric node in Juniper's high-scale QFabric system, deployed in Juniper's virtual chassis fabric switching architecture, and installed in Juniper's existing virtual chassis switching architecture.

Compatibility Information

Spec Value
Designed For P/N: EX2500-24F-BF, EX2500-24F-FB


Spec Value
Connector(s) 1 x SFP+
Connector(s) (Other Side) 1 x SFP+
Connectors 1 x SFP+
Connectors (Other Side) 1 x SFP+

Dimensions & Weight

Spec Value
Width 17.4 in
Depth 20.5 in
Height 1.7 in
Weight 21.83 lbs

Environmental Parameters

Spec Value
Min Operating Temperature 32 °F
Max Operating Temperature 104 °F
Humidity Range Operating 5 - 90% (non-condensing)
Min Storage Temperature -40 °F
Max Storage Temperature 158 °F
Humidity Range Storage 0 - 95% (non-condensing)

Expansion / Connectivity

Spec Value
Interfaces 48 x SFP+ ¦ 6 x QSFP+ (breakout compatible) ¦ 1 x console management ¦ 1 x USB management ¦ 1 x RJ-45 management ¦ 1 x SFP management


Spec Value
Network Cable Type Twinaxial cable
Length 10 ft
Device Type Switch - 48 ports - L3 - managed
Enclosure Type Rack-mountable 1U
Subtype 10 Gigabit Ethernet
Ports 48 x 1 Gigabit SFP/ 10 Gigabit SFP+ + 6 x 40 Gigabit QSFP+ (breakout compatible)
Performance Switching capacity: 1.44 Tbps ¦ Switching capacity: 1.07 Bpps
Capacity IPv4 routes (Unicast): 128000 ¦ Virtual interfaces (VLANs): 4091 ¦ IPv4 hosts: 208000 ¦ IPv4 routes (Multicast): 104000 ¦ IPv6 routes (Multicast): 52000 ¦ IPv6 routes (Unicast): 64000 ¦ ARP entries: 48000 ¦ Multiple Spanning Tree Protocol instances: 64 ¦ VLAN Spanning Tree Protocol instances: 253
MAC Address Table Size 288K entries
Jumbo Frame Support 9216 bytes
Fibre Channel FC-BB-5, FC-BB-6
Routing Protocol OSPF, RIP, RIP-2, IGMPv2, IGMP, VRRP, PIM-SM, static IP routing, IGMPv3, MSDP, ECMP, Bidirectional Forwarding Detection (BFD), CIDR
Remote Management Protocol SNMP 1, SNMP 2, RMON, Telnet, SNMP 3, SSH, CLI
Encryption Algorithm MD5, AES
Authentication Method Secure Shell (SSH), RADIUS, TACACS+, Secure Shell v.2 (SSH2)
Features Flow control, VPN support, BOOTP support, RARP support, ARP support, trunking, VLAN support, IGMP snooping, DoS attack prevention, store and forward, MAC address filtering, IPv6 support, High Availability, SNTP support, Low-latency queuing (LLQ), Weighted Random Early Detection (WRED), sFlow, Spanning Tree Protocol (STP) support, Rapid Spanning Tree Protocol (RSTP) support, Multiple Spanning Tree Protocol (MSTP) support, tunneling, Data Center Bridging Exchange (DCBX) support, DHCP snooping, Trivial File Transfer Protocol (TFTP) support, Access Control List (ACL) support, Quality of Service (QoS), DHCP server, Dynamic ARP Inspection (DAI), Redundant trunk group (RTG), Non-Stop Bridging (NSB), Non-Stop Routing (NSR), Graceful Route Engine Switchover (GRES), front to back airflow, IPv4 support, DHCP relay, Data Center Bridging (DCB), Management Information Base (MIB), Strict Priority Queuing (SPQ), VLAN Spanning Tree Protocol (VSTP), loop prevention, redundant hot swappable fans, FCoE forwarding, Class of Service (CoS), cut-through, 12 MB shared buffer
Compliant Standards IEEE 802.1D, IEEE 802.1Q, IEEE 802.1p, IEEE 802.3x, IEEE 802.3ad (LACP), IEEE 802.1w, IEEE 802.1s, IEEE 802.1ad, IEEE 802.1ab (LLDP), IEEE 802.1Qbb, IEEE 802.1Qaz, IEEE 802.1Qau, IEEE 802.1Qbg, Shaped Deficit Weighted Round-Robin (SDWRR)
Processor 1 x Intel: 1.5 GHz
Built-in Devices 32 GB SSD


Spec Value
MTBF 200,000 hour(s)
Compliant Standards NEBS level 3, EN55022 Class A, FCC CFR47 Part 15, UL 60950-1, IEC 60950-1, EN 60950-1, WEEE, RoHS, BSMI CNS 13438, REACH, EN 60825-1, CAN/CSA C22.2 No. 60950-1, GR-1089-CORE, VCCI Class A, GR-63-CORE, NCC, China RoHS, AS/NZS CISPR 22


Spec Value
Power Device Internal power supply - hot-plug
Installed Qty 2 (installed) / 2 (max)
Power Redundancy Yes
Power Redundancy Scheme 1+1
Voltage Required AC 120/230 V (50/60 Hz)
Power Consumption Operational 150 Watt
80 PLUS Certification 80 PLUS

Software / System Requirements

Spec Value
OS Required JUNOS
  Higher ED K-12 Other
Alabama  Available  Available  Available
Alaska  Available  Available  Available
Arizona  Available  Available  Available
Arkansas  Available  Available  Available
California  Available  Available  Available
Colorado  Available  Available  Available
Connecticut  Available  Available  Available
Delaware  Available  Available  Available
District of Columbia  Available  Available  Available
Florida  Available  Available  Available
Georgia  Available  Available  Available
Hawaii  Available  Available  Available
Idaho  Available  Available  Available
Illinois  Available  Available  Available
Indiana  Available  Available  Available
Iowa  Available  Available  Available
Kansas  Available  Available  Available
Kentucky  Available  Available  Available
Louisiana  Available  Available  Available
Maine  Available  Available  Available
Maryland  Available  Available  Available
Massachusetts  Available  Available  Available
Michigan  Available  Available  Available
Minnesota  Available  Available  Available
Mississippi  Available  Available  Available
Missouri  Available  Available  Available
Montana  Available  Available  Available
Nebraska  Available  Available  Available
Nevada  Available  Available  Available
New Hampshire  Available  Available  Available
New Jersey  Available  Available  Available
New Mexico  Available  Available  Available
New York  Available  Available  Available
North Carolina  Available  Available  Available
North Dakota  Available  Available  Available
Ohio  Available  Available  Available
Oklahoma  Available  Available  Available
Oregon  Available  Available  Available
Pennsylvania  Available  Available  Available
Rhode Island  Available  Available  Available
South Carolina  Available  Available  Available
South Dakota  Available  Available  Available
Tennessee  Available  Available  Available
Texas  Available  Available  Available
Utah  Available  Available  Available
Vermont  Available  Available  Available
Virginia  Available  Available  Available
Washington  Available  Available  Available
West Virginia  Available  Available  Available
Wisconsin  Available  Available  Available
Wyoming  Available  Available  Available