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QFX5110 System Overview

 

QFX5110 Hardware Overview

The QFX5110 line of switches delivers low latency, flexible deployment options, and rich automation features. QFX5110 Switches build a strong underlay foundation for flexible, high-performance, standards-based fabrics and routing that improve network reliability and agility.

This topic covers:

Benefits of QFX5110

Flexible fabric supportQFX5110 offers multiple fabric options to fit your desired network architecture:
  • Virtual Chassis (VC), with up to 10 members

  • Virtual Chassis Fabric (VC), which offers a single pane management for up to 20 nodes

  • MC-LAG, which provides dual-homing with reduced complexity related to STP

  • Junos Fusion Datacenter, where QFX5110 can operate as a satellite leaf node for 1 Gigabit, 10 Gigabit, 40 Gigabit, or 100 Gigabit connectivity

Overlay optionsQFX5110 provides L2 and L3 VXLAN gateway support that works in conjunction with a robust EVPN control plane to efficiently manage your virtualized workloads. Another option, OVSDB-VXLAN can be introduced to stitch virtualized and physical workloads.
High density and low latency applicationsPowered with high density 10 Gigabit or 40 Gigabit network ports and four 100G uplinks, the QFX5110 delivers 1.76 Tbps of throughput and a low latency of 550 nS. Your legacy applications continue to be supported by 100 Mbps or 1 Gigabit copper SFP transceivers.

QFX5110 Models Overview

The QFX5110 line of switches offers two compact 1 U models that are ideal for top-of-rack, QFX Virtual Chassis, or Virtual Chassis Fabric (VCF) deployments, the 48-port QFX5110-48S and the 32-port QFX5110-32Q. Performance of the control plane running on all the QFX5110 switches is enhanced by the 1.8-Ghz quad-core Intel CPU with 16 GB of memory and 64 GB of solid-state drive (SSD) storage. Both models offer flexible port configurations of 1-Gigabit Ethernet, 10-Gigabit Ethernet, 40-Gigabit Ethernet, and 100-Gigabit Ethernet.

Both models can be ordered with either ports-to-FRUs or FRUs-to-ports airflow and with AC or DC power supplies.

The QFX5110-32Q can be used as:

  • A standalone switch (Junos OS Release 17.2R1 and later).

  • A primary, backup, or line card in a QFX5110 Virtual Chassis (Junos OS Release 17.3R1 and later).

    A QFX5110 Series Virtual Chassis allows you to connect up to 10 QFX5110 or supported QFX5100 switches into one logical device and manage the device as a single chassis using a ring topology. The following QFX5100 switches are supported in a QFX5110 Virtual Chassis:

    • QFX5100-24Q

    • QFX5100-48S

    • QFX5100-96S

    For a QFX5100 switch to participate in a QFX5110 Virtual Chassis, the switch must have the same software version and image installed as the software running on the QFX5110 switches in the Virtual Chassis. You do not need to configure mixed mode. In a QFX5110 Virtual Chassis, we recommend to use QFX5110 switches in the primary and backup Routing Engine roles, and QFX5100 switches only in the linecard role.

  • A spine or leaf device in a QFX5110 VCF (Junos OS Release 17.3R1 and later).

    VCF uses QFX 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. You can configure up to a total of 20 QFX5110 or QFX5100 devices in a VCF. Out of the 20 total devices, you can configure a maximum of 4 spine devices. You can use these models in any combination as leaf devices:

    • QFX5100-24Q

    • QFX5100-48S

    • QFX5100-48T (Junos OS Release 17.3R2 and later)

    • QFX5100-96S

    • QFX5110-48S

    Note

    If only QFX5110-48S switches are available, cable and configure the switches as a QFX5110 Virtual chassis.

    Note

    Unike a QFX5100 VCF, EX4300 switches are not supported in the QFX5110 VCF.

The QFX5110-48S can be used as:

  • A standalone switch (Junos OS Release 15.1X53-D210 and later).

  • A primary, backup, or line card in a QFX5110 Virtual Chassis (Junos OS Release 17.3R1 and later).

    A QFX5110 Series Virtual Chassis allows you to connect up to 10 QFX5110 or supported QFX5100 switches into one logical device and manage the device as a single chassis using a ring topology. The following QFX5100 switches are supported in a QFX5110 Virtual Chassis:

    • QFX5100-24Q

    • QFX5100-48S

    • QFX5100-96S

    For a QFX5100 switch to participate in a QFX5110 Virtual Chassis, the switch must have the same software version and image installed as the software running on the QFX5110 switches in the Virtual Chassis. You do not need to configure mixed mode. In a QFX5110 Virtual Chassis, we recommend to use QFX5110 switches in the primary and backup Routing Engine roles, and QFX5100 switches only in the line card role.

  • A leaf device in a QFX5110 VCF (Junos OS Release 17.3R1 and later).

    VCF uses QFX 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. You can configure up to a total of 20 QFX5110 devices in a QFX5110 VCF. Use QFX5110-32Q as the spine devices. You can use these models in any combination as leaf devices:

    • QFX5100-24Q

    • QFX5100-48S

    • QFX5100-48T (Junos OS Release 17.3R2 and later)

    • QFX5100-96S

    • QFX5110-48S

    Note

    If only QFX5110-48S switches are available, cable and configure the switches as a QFX5110 Virtual chassis.

  • A satellite device in a Junos Fusion Provider Edge system (Junos OS 18.1R2 and later)

    Note

    The QFX5110-48S does not support channelized ports in a Junos Fusion environment.

QFX5110-48S Hardware

As shown in Figure 1, the QFX5110-48S is a 10-Gigabit Ethernet enhanced small form-factor pluggable plus (SFP+) switch with 48 SFP+ ports and four 100-Gbps quad small form-factor (QSFP) pluggable solution (QSFP28) ports. Each SFP+ port (0 through 47)can operate as a native 10-Gigabit Ethernet port or a 1-Gigabit Ethernet port when 1-Gigabit Ethernet optics are inserted.

Each QSFP28 port (48 through 51) can operate as a native 100-Gigabit Ethernet port, a native 40-Gigabit Ethernet port, or as 4 independent 10-Gigabit ports when using breakout cables. The four QSFP28 ports can be used as either access ports or as uplinks. The QFX5110-48S provides an aggregate throughput of 960 Gbps. The QFX5110-48S has a 1 U form factor and comes standard with redundant fans and redundant power supplies.

Figure 1: QFX5110-48S Port Panel
QFX5110-48S Port Panel

QFX5110-32Q Hardware

As shown in Figure 2, the QFX5110-32Q is a flexible configuration switch allowing either 32 ports of 40-Gigabit Ethernet quad small form-factor pluggable plus (QSFP+) or 20 ports of QSFP+ and 4 ports of high-density 100-Gigabit Ethernet quad small form-factor pluggable solution (QSFP28). Each QSFP+ port can operate as a native 40-Gigabit Ethernet port, or as four independent 10-Gigabit Ethernet ports when using breakout cables. The four QSFP28 ports are available either as access ports or as uplinks.

The QFX5110-32Q can be channelized using one of the available system modes. For full details on the different port channelization modes, see QFX5110-32Q Port Panel. The QFX5110-32Q switch provides an aggregate throughput of 2.56 Tbps.

Figure 2: QFX5110-32Q Port Panel
QFX5110-32Q Port Panel

System Software

QFX Series devices use the Junos operating system (OS), which is installed on a QFX5110 switch’s 64-GB internal solid-state flash drive. The same Junos OS code base that runs on QFX5110 switches also runs on all Juniper Networks EX Series switches, and M Series, MX Series, and T Series routers.

The QFX5110-48S switch is supported on Junos OS Release 15.1X53-D210 and later; the QFX5110-32Q is supported on Junos OS 17.2R1 and later.

Software features are categorized into three tiers: base, premium, and advanced:

  • Junos OS base features such as Layer 2 and Layer 3 switching, multicast, automation, programmability, Zero Touch Provisioning (ZTP), and basic monitoring are enabled by default from the factory.

  • Junos OS premium features such as Border Gateway Protocol (BGP), Intermediate System-to-Intermediate System (IS-IS), and Virtual Extensible Local Area Network (VXLAN) require a QFX5K-C1-PFL license on each QFX5110 switch to use these features.

  • Junos OS advanced features include Multiprotocol Label Switching (MPLS) in addition to all of the premium features. A QFX5K-C1-AFL license is required on each QFX5110 switch to use these features.

When using QFX5110 switches in a QFX5110 VCF, PFL and AFL licenses are required on the spine device: leaf devices do not require licensing.

QFX5110 switches employ the security feature, Secure Boot, which is based on the UEFI 2.4 standard. The BIOS has been hardened and serves as a core root of trust. The BIOS updates, the bootloader, and the kernel are cryptographically protected. No action is required to implement Secure Boot.

If a premium or advanced feature is configured on the QFX5110 without a valid license, an alarm is raised and system log (syslog) messages are generated.

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.

QFX5110 Hardware Models

The QFX5110 switches have 32 or 48 port configurations. Both switches are available with either AC or DC power supply and with either airflow-in or airflow-out cooling. All models of the QFX5110, except the QFX5110-32Q_CHAS, ship with two power supplies and five fans installed by default.

Table 1 lists the ordering numbers for QFX5110 hardware-only product SKUs.

Table 1: QFX5110 Hardware-only Product Numbers

Product Numbers

Ports

Power Supply

Airflow

QFX5110-48S-AFO

48 SFP+

4 QSFP28

AC

Air Out (ports-to-FRUs)

QFX5110-48S-AFI

48 SFP+

4 QSFP28

AC

Air In (FRUs-to-ports)

QFX5110-48S-DC-AFO

48 SFP+

4 QSFP28

DC

Air Out (ports-to-FRUs)

QFX5110-48S-DC-AFI

48 SFP+

4 QSFP28

DC

Air In (FRUs-to-ports)

QFX5110-32Q-AFO

32 QSFP+

4 QSFP28

AC

Air Out (ports-to-FRUs)

QFX5110-32Q-AFI

32 QSFP+

4 QSFP28

AC

Air In (FRUs-to-ports)

QFX5110-32Q-DC-AFO

32 QSFP+

4 QSFP28

DC

Air Out (ports-to-FRUs)

QFX5110-32Q-DC-AFI

32 QSFP+

4 QSFP28

DC

Air In (FRUs-to-ports)

QFX5110-32Q-CHAS

32 QSFP+

4 QSFP28

Order PSUs separately.

Fan modules are not shipped by default. Order fan modules separately.

Caution

Mixing different types (AC and DC) of power supplies in the same chassis is not supported. Mixing different airflow modules in the same chassis is not supported.

Understanding Hardware Redundancy of QFX5110 Components and Functionality

The following hardware components provide redundancy on a QFX5110:

  • Power supplies—The QFX5110 can operate with one power supply. However, all QFX5110 switches, except the QFX5110-32Q-CHAS, ship with two power supplies preinstalled for redundancy.. Each power supply provides power to all components in the switch. If two power supplies are installed, the two power supplies provide full power redundancy to the device. If one power supply fails or is removed, the second power supply takes over the electrical load without interruption.

    To provide power redundancy to the system, both power supplies must be installed. Connect power source feed A to one power supply and power source feed B to the second power supply.

    Caution

    Do not connect feed A and feed B to the same power supply input terminal.

  • Cooling system—All QFX5110 switches, except the QFX5110-32Q-CHAS, ship with five fan modules installed. If a fan module fails and is unable to keep the QFX5110 within the desired temperature thresholds, chassis alarms occur and the QFX5110 can shut down.

QFX5110 Field-Replaceable Units

Field-replaceable units (FRUs) are components that you can replace at your site. The QFX5110 FRUs are hot-insertable and hot-removable: you can remove and replace one of them without powering off the switch or disrupting the switching function.

Caution

Replace a failed power supply with a blank panel or new power supply within one minute of removal to prevent chassis overheating. The switch continues to operate with only one power supply running. Replace a failed fan module with a new fan module within one minute of removal to prevent chassis overheating. Do not operate the switch with missing FRUs for longer than one minute.

Table 2 lists the FRUs for the QFX5110 and actions to take before removing them.

Table 2: FRUs in a QFX5110

FRU

Required Action

Power supplies

None.

Fan modules

None.

Optical transceivers

None. We recommend that you disable the interface using the set interfaces interface-name disable command before you remove the transceiver. See Remove a Transceiver.

Note

If you have a Juniper Care service contract, you can register any addition, change, or upgrade of hardware components at https://www.juniper.net/customers/support/tools/updateinstallbase/. Failure to do so can result in significant delays if you need replacement parts. This note does not apply if you replace existing components with the same type of component.