QFX10008 System Overview
QFX10008 Hardware Overview
The Juniper Networks® QFX10008 modular data center spine and core Ethernet switch provides cloud and data center operators with a smooth transition from 10-Gigabit Ethernet and 40-Gigabit networks to 100-Gigabit Ethernet high-performance networks. This high-performance, 13 rack unit (13 U) modular chassis can provide 48 Tbps of throughput and 16 Bpps of forwarding capacity. The QFX10008 has eight slots for line cards that can support a maximum of one-thousand, one-hundred fifty-two 10-Gigabit Ethernet ports, two-hundred eight-eight 40-Gigabit Ethernet ports, or two-hundred forty 100-Gigabit Ethernet ports.
The QFX10008 can be deployed in various network designs and fabrics including:
Layer 3 fabrics
Juniper Networks MC-LAG for Layer 2 and 3 networks
The QFX10008 is available in both base and redundant configurations for both AC and DC operation. All systems feature front to back airflow. This airflow is also know as airflow out (AFO).
This topic covers:
Benefits of QFX10000 Modular Chassis Switches
The QFX10008 is 13 U tall. Up to 3 QFX10008 chassis can fit in a standard 42 U rack with adequate cooling and power. All key QFX10008 components are field-replaceable units (FRUs). Figure 1 illustrates the key components visible from the front of the chassis, Figure 2 illustrates the components that are visible from the rear of the chassis, and Figure 3 illustrates the components that are internal to the chassis.
Installation holes for the front panel
Status LED panel
Line card slots 0-7 (numbered top to bottom)
Starting in May 2019, new chassis ship with an enhanced power bus to support the power needs of higher wattage line cards. Chassis with the enhanced power bus have a modified Status Panel (see QFX10000 Status Panel LEDs).
AC or DC power supplies slots 0-7 (numbered top to bottom)
Fan trays with redundant fans
Fan tray controllers
Switch interface boards (SIBs) slots 0-5 (numbered left to right)
Routing and Control Board
The Routing and Control Board (RCB) contains a routing engine
and is responsible for the system management and system control in
QFX10008. See Figure 4. RCBs
are FRUs that are installed in the front of the chassis in the slots
base configuration has a single RCB; the fully-redundant configuration
has two RCBs. The RCB also contains Precision Time Protocol ports
and four MAC-SEC capable ports. See QFX10000 Routing and Control Board Description.
The QFX10008 features eight horizontal line card slots and supports
line rate for each line card. The line cards combine a Packet Forwarding
Engine (PFE) and Ethernet interfaces enclosed in a single assembly.
The QFX10008 line card architecture is based on number of identical,
independent PFE slices each with 500 Gbps full-duplex throughput.
Line cards are FRUs that can be installed in the line card slots labeled
7 (top to bottom) on the
front of the switch chassis. All line cards are hot-removable and
Five line cards are available for the QFX10008:
QFX10000-36Q–provides 36 ports of 40-gigabit QSFP+. Twelve ports are designed to be 100-Gigabit capable using QSFP28. Each of the 40-Gigabit QSFP+ can be configured as either a native 40-Gigabit port or four 10-Gigabit ports using a breakout cable. With breakout cables, the line card supports a maximum of 144 logical 10-Gigabit Ethernet ports.
QFX10000-30C–provides 30 ports of either 100-gigabit or 40-gigabit QSFP28. The ports autodetect the type of transceiver installed and set the configuration to the appropriate speed. Each of the 40-gigabit ports can be configured as either a native 40-gigabit port or four 10-gigabit ports using a breakout cable. With breakout cables, the line card supports a maximum of 96 logical 10-Gigabit Ethernet ports.
QFX10000-30C-M–provides 30 ports of either 100-gigabit or 40-gigabit QSFP28 that support MACsec security features.
QFX10000-60S-6Q–provides 60 SFP+ ports that can be configured for either 1-gigabit or 10-gigabit speeds. The card also provides six flexible configuration ports for 100-gigabit and 40-gigabit speeds. Of the six flexible configuration ports, two ports have QSFP28 sockets that support either 100-gigabit or 40-gigabit speeds. The remaining four ports have QSFP+ sockets that can be configured as either a native 40-gigabit port or four 10-gigabit ports using a breakout cable. With breakout cables, the line card supports a maximum of 84 logical 10-Gigabit Ethernet ports.
QFX10K-12C-DWDM-provides 6 coherent dense wavelength-division multiplexing (DWDM) ports with built-in optics. The card supports MACsec security features and provides a flexible rate modulation at 100 Gbps, 150 Gbps, and 200 Gbps speeds.
See Figure 5 for an example of a QFX10000 line card.
Five SIBs provide the necessary switching functionality to a base configuration QFX10008. A sixth SIB is available in the redundant configuration to provide N+1 redundancy. SIBs are installed between the line cards and the fan trays inside of the chassis (see Figure 6). Each QFX10008 SIB has eight connectors that match to a line card slot eliminating the need for a backplane. When all six SIBs are installed, the QFX10008 has a net switching capacity of 42 Terabytes. See QFX10008 Switch Interface Board.
The cooling system in a QFX10008 consists of two hot-removable and hot-insertable FRU fan trays (see Figure 7) and two fan tray controllers (see Figure 8). Each fan tray contains 11 fans. The fan trays install vertically on the rear of the chassis and provides front to back chassis cooling. See QFX10008 Cooling System.
Power supplies for the QFX10008 are fully redundant, load-sharing, and hot-removable and hot-insertable (FRUs. Each QFX10008 base configuration has three power supplies; redundant configurations hold the maximum of six AC or DC power supplies. Each power supply has an internal fan for cooling. See Figure 9 and Figure 10.
Mixing different types of power supplies (AC and DC) in the same chassis is not supported.
The Juniper Networks QFX Series Ethernet Switches run Junos OS, which provides Layer 2 and Layer 3 switching, routing, and security services. The same Junos OS code base that runs on QFX Series switches also runs on all Juniper Networks EX Series, M Series, MX Series, and T Series routers and SRX Series Services Gateways.
Table 1 lists the four hardware configurations for a QFX10008 modular chassis—base (AC version), and redundant (AC and DC versions)—and the components included in each configuration.
Table 1: QFX10008 Hardware Configurations
Base AC configuration
Redundant AC configuration
Redundant DC configuration
You can install up to eight line cards (any combination of line cards) in the switch.
Line cards, the cable management system, and the SATA solid state drive are not part of the base or redundant configurations. You must order them separately.
If you want to purchase additional power supplies (AC or DC), SIBs, or Control Boards for your switch configuration, you must order them separately.
QFX10000 Hardware and CLI Terminology Mapping
This topic describes the hardware terms used in QFX10000 documentation and the corresponding terms used in the Junos OS command-line interface (CLI). See Table 2.
Table 2: CLI Equivalents of Terms Used in Documentation for QFX10000 Switches
Hardware Item (CLI)
Item In Documentation
n is a value in the range of 0–1.
Multiple line items appear in the CLI if more than one RCB (CB) is installed in the chassis.
Abbreviated name of the Flexible PIC Concentrator (FPC)
On QFX10008 and QFX10016, an FPC equates to a line card.
n is a value in the range of 0–7 for the QFX10008 and 0–15 for the QFX10016. The value corresponds to the line card slot number in which the line card is installed.
Line card (The switch does not have actual FPCs–the line cards are the FPC equivalents on the switch.)
Abbreviated name of the transceiver
n is a value equivalent to the number of the port in which the transceiver is installed.
One of the following:
n is a value in the range of 0–5. The value corresponds to the power supply slot number.
AC or DC power supply
This field indicates:
n is a value in the range of 0–5.
Value of n is always 0.
QFX10000 Component Redundancy
The QFX10000 is designed so that no single point of failure can cause the entire system to fail. The following major hardware components in the redundant configuration provide redundancy:
Routing and Control Board (RCB)—The RCB consolidates the Routing Engine function with control plane function in a single unit. The QFX10000 can have one or two RCBs. When two RCBs are installed, one functions as the master and the other functions as the backup. If the master RCB (or either of its components) fails, the backup can take over as the master. See QFX10000 Routing and Control Board Description.
Switch Interface Boards (SIBs)—The QFX10000 has six SIB slots. Five SIBs are required for base operation and the sixth SIB provides N+1 redundancy. All six SIBs are active and can sustain full throughput rate. The fabric plane can tolerate one SIB failure without any loss of performance. See the QFX10008 Switch Interface Board Description and QFX10016 Switch Interface Board Description.
Power supplies—The QFX10000 requires three power supplies for minimum operation (two RCBs, two fan trays, six SIBs and no line cards). With additional power supplies, it provides N+1 redundancy for the system. Both AC and DC systems tolerate a single power supply to fail without system interruption. If one power supply fails in a fully redundant system, the other power supply can provide full power to the QFX10000 indefinitely.
The QFX10000 also supports source redundancy. Two sets of grounding lugs are provided for the DC power cables, and two AC power cords are provided for each AC power supply.
Cooling system—The fan trays have redundant fans, which are controlled by the fan tray controller. If one of the fans fails, the host subsystem increases the speed of the remaining fans to provide sufficient cooling for the switch indefinitely. See QFX10008 Cooling System and Airflow and QFX10016 Cooling System and Airflow .