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QFX5100 Device Hardware Overview

The QFX5100 line of switches is Juniper Network’s second generation of top-of-rack switch solutions for data centers and campus distribution or aggregation environments. The QFX5100 portfolio consists of high-performance fixed-configuration switches that add higher port densities, additional scalability, and improved latency to the QFX Series.

This topic covers:

QFX5100 Hardware

QFX5100 line of switches offer two compact 1 U models and a 2 U model that provide wire-speed packet performance, very low latency, and rich set of Layer 2 and Layer 3 features. In addition to a high-throughput Packet Forwarding Engine, the performance of the control plane running on all the QFX5100 switches is enhanced by the 1.5 Ghz dual-core Intel CPU with 8 GB of memory and 32 GB of solid-state drive (SSD) storage.

The QFX5100-24Q-AA switch has a 2.5 GHz 4-core Intel CPU with 32 GB of memory and 128 GB of SSD storage.

The QFX5100 line of switches include both 10GE and 40GE fixed-configurations:

  • QFX5100-48S

    As shown in Figure 1, the QFX5100-48S is a 10-Gigabit Ethernet Enhanced Small Form-Factor Pluggable (SFP+) top-of-rack switch with 48 SFP+ ports and 6 Quad SFP+ (QSFP+) ports. Each SFP+ port can operate as a native 10 Gigabit port, when 10 Gbps optics are used. The SFP+ ports can also run at 1 Gbps, or at 100 Mbps speeds when 1_Gigabit optics are inserted. Each QSFP+ port (48 through 53) can operate as uplink ports or four QSFP+ port (50 through 53) can operate at native 40-Gigabit speed or as 4 independent 10-Gigabit port speeds. The 6 QSFP+ ports can be used as either access ports or as uplinks. The QFX5100-48S provides full duplex throughput of 1.44 Tbps. The QFX5100-48S has a 1 U form factor and comes standard with redundant fans and redundant power supplies. The switch can be ordered with either ports-to-FRUs or FRUs-to-ports airflow and with AC or DC power supplies.

    Figure 1: QFX5100-48S Port Panel

    QFX5100-48S Port Panel

    The QFX5100-48S can be used as:

    • A standalone switch.
    • A Node device in a QFabric system.

      The QFX5100-48S is supported on both the QFX3000-G and QFX3000-M QFabric systems.

    • A master, backup, or line card in a QFX Virtual Chassis.

      A QFX Virtual Chassis allows you to interconnect up to 10 QFX3500, QFX3600, or QFX5100 switches into one logical device and manage the device as a single chassis using a ring topology.

    • A backup or line card in a QFX5110 Virtual Chassis.

      A QFX5110 Virtual Chassis must have a QFX5110-32Q as the master. Only QFX5110 and select models of QFX5100 can participate in a QFX5110 Virtual Chassis.

    • A spine or leaf device in a standard QFX5100 Virtual Chassis Fabric (VCF).

      VCF uses Virtual Chassis technology to interconnect multiple devices into a single logical device and manage that device as a single logical device inside of a fabric architecture. VCF architecture supports up to 20 total devices in a spine and leaf topology. Out of the 20 total devices, you can configure a maximum of 4 spine devices.

      A QFX5100 VCF uses QFX5100 devices as spines or leaf devices. You can also use QFX3500, QFX3600, and EX4300 models as leaf devices in a QFX5100 VCF.

      Whenever possible, configure the QFX5100-24Q as the spine device in a QFX5100 VCF. You can use the QFX5100-48S as the spine in an all QFX5100-48S VCF or when EX4300 devices are used as leaf devices.

    • A leaf device in a QFX5110 VCF.

      A QFX5110 VCF must have a minimum of two QFX5110-32Q as spine devices. You can also use the QFX5100-24Q and QFX5100-96S as leaf devices in a QFX5110 VCF..

    • A satellite device in a Junos Fusion system.

      Junos OS Release 14.2.3 or later is required for Junos Fusion.

  • QFX5100-48SH

    As shown in Figure 2, the QFX5100-48SH is the same form factor and port configuration as the QFX5100-48S. The QFX5100-48SH is specifically designed for Juniper Networks Cloud Data Center and comes pre-configured with Satellite Network Operational System (SNOS) instead of Juniper Networks Junos OS. The switch may not be converted to Junos OS without an additional license. The switch can be ordered with either ports-to-FRUs or FRUs-to-ports airflow and with AC power supplies.

    The QFX5100-48SH can only be used as a satellite device in a Junos Fusion system.

    Figure 2: QFX5100-48SH Port Panel

    QFX5100-48SH Port Panel
  • QFX5100-48T

    As shown in Figure 3, the QFX5100-48T is a tri-speed 100/1000/10GBASE-T top-of-rack switch with 48 10GBASE-T access ports and 6 QSFP+ ports. Each 40-Gigabit QSFP+ port (48 through 53) can operate either as uplink ports or four QSFP+ ports (50 through 53) can operate at native 40-Gigabit port or be channelized into 4 independent 10 Gigabit ports. The 6 QSFP+ ports can be used as either access ports or as uplinks. The QFX5100-48T provides full duplex throughput of 720 Gbps. The QFX5100-48T has a 1 U form factor and comes standard with redundant fans and redundant power supplies. The switch can be ordered with either ports-to-FRUs or FRUs-to-ports airflow and with AC or DC power supplies.

    Figure 3: QFX5100-48T Port Panel

    QFX5100-48T Port Panel

    The QFX5100-48T can be used as:

    • A standalone switch.
    • A Node device in a QFabric system.

      The QFX5100-48T is supported on both the QFX3000-G and QFX3000-M QFabric systems.

    • A master, backup, or line card in a QFX Virtual Chassis.

      A QFX Series Virtual Chassis allows you to interconnect up to ten QFX5100, QFX3500, or QFX3600, switches into one logical device and manage the device as a single chassis using a ring topology.

    • A leaf device in a standard QFX5100 Virtual Chassis Fabric (VCF).

      VCF uses Virtual Chassis technology to interconnect multiple devices into a single logical device and manage that device as a single logical device inside of a fabric architecture. VCF architecture supports up to 20 total devices in a spine and leaf topology. Of those 20 devices, 4 QFX5100 devices can be configured as spine devices.

      In a QFX5100 VCF, the QFX5100-48T is always a leaf device and a QFX5100-24Q is the spine device.

    • A satellite device in a Junos Fusion system.

      Junos OS Release 14.2.3 or later is required for Junos Fusion.

  • QFX5100-48TH

    As shown in Figure 4, the QFX5100-48TH is the same form factor and port configuration as the QFX5100-48T. The QFX5100-48TH is specifically designed for Juniper Networks Cloud Data Center and comes pre-configured with Satellite Network Operational System (SNOS) instead of Juniper Networks Junos OS. The switch may not be converted to Junos OS without an additional license. The switch can be ordered with either ports-to-FRUs or FRUs-to-ports airflow and with AC power supplies.

    The QFX5100-48TH can only be used as a satellite device in a Junos Fusion system.

    Figure 4: QFX5100-48THPort Panel

    QFX5100-48THPort Panel
  • QFX5100-24Q

    As shown in Figure 5, the QFX5100-24Q is a 40-Gigabit Ethernet QSFP+ switch with 24 high-density QSFP+ ports. Each QSFP+ port can operate as a native 40 Gbps port or as 4 independent 10 Gbps ports. The QFX5100-24Q switch has a 1 U form factor and comes standard with redundant fans and redundant power supplies. The switch can be ordered with either ports-to-FRUs or FRUs-to-ports airflow and with AC or DC power supplies.

    The QFX5100-24Q switch has two module bays for the optional expansion module, QFX-EM-4Q, which can add a total of 8 additional QSFP+ ports to the chassis. When operating as a standalone switch and fully populated with QFX-EM-4Q Expansion Modules, the QFX5100-24Q switch is equivalent to 80 10 Gbps interfaces and 4 40-Gbps interfaces. Of these total ports, 104 logical ports are available for 10G port channelization. For full details on the different port channelization modes, see Port Panel of a QFX5100-24Q Device. All ports on the QFX5100-24Q and QFX-EM-4Q can be configured as either access ports or as uplinks. The QFX5100-24Q switch provides full duplex throughput of 2.56 Tbps.

    Figure 5: QFX5100-24Q Port Panel

    QFX5100-24Q Port Panel

    The QFX5100-24Q can be used as:

    • A standalone switch.
    • An interconnect device in a QFX3000-M QFabric system.
    • A Node device in a QFabric system.

      The QFX5100-24Q is supported on both the QFX3000-G and QFX3000-M QFabric systems. A QFX5100-24Q Node device is equivalent to 80 10-Gbps interfaces and 4 40-Gbps interfaces.

    • A master, backup, or line card in a QFX Virtual Chassis.

      A QFX Series Virtual Chassis allows you to interconnect up to 10 QFX3500, QFX3600, or QFX5100 switches into one logical device and manage the device as a single chassis in a ring topology.

      Use QFX5100-24Q switches as the master and backup in a QFX Virtual Chassis.

    • A backup or line card in a QFX5110 Virtual Chassis.

      A QFX5110 Virtual Chassis must have a QFX5110-32Q as the master. Only QFX5110 switches and select models of QFX5100 can participate in a QFX5110 Virtual Chassis.

    • A spine or leaf device in a standard QFX5100 Virtual Chassis Fabric (VCF).

      VCF uses Virtual Chassis technology to interconnect multiple devices into a single logical device and manage that device as a single logical device inside of a fabric architecture. VCF architecture supports up to 20 total devices in a spine and leaf topology. Out of the 20 total devices, you can configure a maximum of 4 spine devices.

      A QFX5100 VCF uses QFX5100 devices as spines or leaf devices. You can also use QFX3500, QFX3600, and EX4300 models as leaf devices in a QFX5100 VCF.

      Whenever possible, configure the QFX5100-24Q as the spine device in a QFX5100 VCF.

    • A leaf device in a QFX5110 VCF.

      A QFX5110 VCF must have a minimum of two QFX5110-32Q as spine devices. You can also use the QFX5110-48S and QFX5100-96S as leaf devices in a QFX5110 VCF..

    • A satellite device in a Junos Fusion system.

      Junos OS Release 14.2.3 or later is required for Junos Fusion.

    The QFX5100-24Q switch has two bays on the port panel for optional expansion modules. The QFX5100-24Q supports two expansion modules to increase port density:

    • QFX-EM-4Q, which provides four additional 40-Gigabit Quad SFP+ (QSFP+) ports. See Figure 6.

      Figure 6: QFX-EM-4Q Expansion Module

      QFX-EM-4Q Expansion Module
    • EX4600-EM-8F, which provides eight additional 10-Gigabit Ethernet Enhanced Small Form-Factor Pluggable (SFP+) or four 1-Gigabit Ethernet ports. See Figure 7.

      Caution: Use only the top four ports or the bottom four ports for SFP transceivers. Because SFP transceivers are larger than SFP+ transceivers, attempting to stack SFP transceivers can cause internal damage to the module.

      Figure 7: EX4600-EM-8F Expansion Module

      EX4600-EM-8F Expansion Module

      Note: The EX4600-EM-8F is not supported on the QFX5100-24Q running in QFabric systems.

    The QFX5100-24Q is configured for the QFX-EM-4Q by default, but any combination of the two modules is supported. Expansion modules can be hot-inserted or hot-removed. However, when an EX4600-EM-8F is inserted instead of the default QFX-EM-4Q, the new configuration causes the interfaces to temporarily go down. Likewise, when an EX4600-EM-8F is running on the QFX5100-24Q and it is swapped with a QFX-EM-4Q, the interfaces temporarily go down, which can cause a short disruption in traffic.

  • QFX5100-24Q-AA

    As shown in Figure 8, the QFX5100-24Q-AA is a 1 U, top-of-rack, 40-Gigabit Ethernet QSFP+ switch with 24 high-density QSFP+ ports. Each QSFP+ port can be configured to support 40-Gigabit Ethernet or as a set of 4 independent 10-Gigabit Ethernet ports. The QFX5100-24Q-AA can also be configured to support twenty-four 40-Gigabit Ethernet interfaces or ninety-six 10-Gigabit Ethernet interfaces using breakout cables (channelization mode) with 1280 Gbps output. The switch can be ordered with either ports-to-FRUs or FRUs-to-ports airflow and with AC or DC power supplies. The QFX5100-24Q switch provides full duplex throughput of 2.56 Tbps.

    The QFX5100-24Q-AA module bay can accommodate a single Packet Flow Accelerator (PFA) double-wide expansion module (QFX-PFA-4Q) or two single-wide optional expansion modules (two or one each of QFX-EM-4Q and EX4600-EM-8F). The QFX-PFA-4Q, which features a high-performance field-programmable gate array (FPGA), provides four additional QSFP+ ports to the chassis. Each QFX-EM-4Q adds four QSFP+ ports to the chassis and each EX4600-EM-8F adds eight 10-Gigabit SFP+ ports to the chassis. The QFX-EM-4Q ports can also be configured as either access ports or uplink ports, but only ports 0 and 2 can be channelized using port mode. For full details on the different port channelization modes, see Port Panel of a QFX5100-24Q Device. All ports on the QFX5100-24Q and QFX-EM-4Q can be configured as either access ports or uplink ports.

    This switch provides the hardware support to enable PTP boundary clocks by using the QFX-PFA-4Q module. The QFX5100-24Q-AA also supports GPS in and out signals when QFX-PFA-4Q is installed.

    The CPU subsystem of this switch includes a 2-port 10-Gigabit Ethernet network interface card (NIC) to provide a high bandwidth path or to alternate traffic path to guest VMs directly from the Packet Forwarding Engine.

    Figure 8: QFX5100-24Q-AA Port Panel with QFX-PFA-4Q

    QFX5100-24Q-AA Port Panel
with QFX-PFA-4Q

    The QFX5100-24Q-AA can be used as a standalone switch that supports high frequency statistics collection. Working with Juniper Networks Cloud Analytics Engine, this switch monitors and reports the workload and application behavior across the physical and virtual infrastructure.

    The QFX5100-24Q-AA supports the following expansion modules to increase port density:

    • QFX-PFA-4Q (double-wide), which provides four additional QSFP+ ports. See Figure 9.

      Figure 9: QFX-PFA-4Q Expansion Module

      QFX-PFA-4Q Expansion Module
    • QFX-EM-4Q (single-wide), which provides 4 additional 40-Gigabit Ethernet QSFP+ ports. See Figure 6.
    • EX4600-EM-8F (single-wide), which provides 8 additional 10-Gigabit Ethernet SFP+ ports. See Figure 7.

    The QFX5100-24Q switch supports the QFX-PFA-4Q and you must take the switch offline before replacing the expansion module. Any combination of EX4600-EM-8F and QFX-EM-4Q is also supported. These two expansion modules can be hot-inserted or hot-removed. However, when an EX4600-EM-8F is inserted instead of a QFX-EM-4Q, the new configuration causes the interfaces to temporarily go down. Likewise, when an EX4600-EM-8F is running on the QFX5100-24Q and is swapped with a QFX-EM-4Q, the interfaces temporarily go down, which can cause a short disruption in traffic.

  • QFX5100-96S

    As shown in Figure 10, the QFX5100-96S switch is a is a 10-Gigabit Ethernet Enhanced Small Form-Factor Pluggable (SFP+) top-of-rack switch with 96 SFP+ ports and 8 Quad SFP+ (QSFP+) ports. Each SFP+ port can operate as a native 10 Gigabit port, when 10 Gbps optics are used. The SFP+ ports can also run at 1 Gbps, or at 100 Mbps speeds when 1_Gigabit optics are inserted. QSFP+ ports 96 and 100 can operate at native 40 Gbps speed or can be channelized to 4 independent 10 Gbps port speeds. The 8 QSFP+ ports can be used as either access ports or as uplinks. The QFX5100-96S switch has a 2 U form factor and comes standard with redundant fans and redundant power supplies. The switch can be ordered with either ports-to-FRUs or FRUs-to-ports airflow and with AC or DC power supplies.

    Figure 10: QFX5100-96S Port Panel

    QFX5100-96S Port Panel

    The QFX5100-96S can be used as:

    • A standalone switch.
    • A member in a QFX Virtual Chassis.

      A QFX Series Virtual Chassis allows you to interconnect up to ten QFX3500, QFX3600, or QFX5100 switches into one logical device and manage the device as a single chassis in a ring topology.

    • A spine or leaf device in a Virtual Chassis Fabric (VCF).

      VCF uses Virtual Chassis technology to interconnect multiple devices into a single logical device and manage that device as a single logical device inside of a fabric architecture. VCF architecture supports up to 20 total devices in a spine and leaf topology. Of those 20 devices, 4 QFX5100 devices can be configured as spine devices.

      In a mixed environment with QFX5100-24Q, QFX5100-98S and EX4300, use the QFX5100-24Q as the spine device and the QFX5100-96S and EX4300 as a leaf devices. You may use the QFX5100-96S as a spine in an all QFX5100-96S VCF or in a VCF that has a mixture of QFX5100-96S and EX4300.

    • A backup or line card in a mixed QFX5110 Virtual Chassis.

      A QFX5110 Virtual Chassis must have a QFX5110-32Q as the master. Only QFX5110 switches and select models of QFX5100 switches can participate in a QFX5110 Virtual Chassis.

    • A spine or leaf device in a standard QFX5100 Virtual Chassis Fabric (VCF).

      VCF uses Virtual Chassis technology to interconnect multiple devices into a single logical device and manage that device as a single logical device inside of a fabric architecture. VCF architecture supports up to 20 total devices in a spine and leaf topology. Out of the 20 total devices, you can configure a maximum of 4 spine devices.

      A QFX5100 VCF uses QFX5100 devices as spines or leaf devices. You can also use QFX3500, QFX3600, and EX4300 models as leaf devices in a QFX5100 VCF.

      Whenever possible, configure the QFX5100-24Q as the spine device in a QFX5100 VCF.

    • A leaf device in a QFX5110 VCF.

      A QFX5110 VCF must have a minimum of two QFX5110-32Q as spine devices. You can also use the QFX5110-48S and QFX5100-24Q as leaf devices in a QFX5110 VCF..

    • A satellite device in a Junos Fusion system.

      Junos OS Release 14.2.3 or later is required for Junos Fusion.

System Software

QFX Series devices use the Junos operating system (OS), which provides Layer 2 and Layer 3 switching, routing, and security services. Junos OS is installed on a QFX5100 switch’s 32-gigabyte (GB) internal solid state flash drive. The same Junos OS code base that runs on QFX5100 switches also runs on all Juniper Networks EX Series switches, M Series, MX Series, and T Series routers.

Participation in a QFX5110 Virtual Chassis or a QFX5110 VCF requires the same Junos OS image on all devices in the Virtual Chassis or VCF. Junos OS 17.3R1 or later is the minimum software release for QFX5110 Virtual Chassis or QFX5110 VCF.

For more information about which features are supported on QFX Series devices, see Feature Explorer.

You manage the switch using the Junos OS command-line interface (CLI), accessible through the console and out-of-band management ports on the device.

Modified: 2017-09-13