Table 3: Supported Qfabric System Hardware Configurations - Juniper QFabric QFX3000-G Hardware Documentation

QFX3000-G QFabric System Hardware Documentation

Table 3: Supported QFabric System Hardware Configurations

QFabric
System
Configuration Director Group
QFX3000-G QFX3100 Director
QFabric system group
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The four major QFabric system components include the following:
Director group—The Director group is a management platform that establishes,
monitors, and maintains all components in the QFabric system. It is a set of Director
devices that run the Junos operating system (Junos OS) on top of a CentOS foundation.
The Director group handles tasks such as QFabric system network topology discovery,
Node and Interconnect device configuration and startup, and Domain Name System
(DNS), Dynamic Host Configuration Protocol (DHCP), and Network File System (NFS)
services. The Director group also runs the software for management applications, hosts
and load-balances internal processes for the QFabric system, and starts additional
QFabric system processes as requested.
Node devices—A Node device is a hardware system located on the ingress of the
QFabric system that connects to endpoints (such as servers or storage devices) or
external networks, and is connected to the heart of the QFabric system through an
Interconnect device. A Node device can be used in a manner similar to how a top-of-rack
switch is implemented. By default, Node devices connect to servers or storage devices.
However, when you group Node devices together to connect to a network that is
external to the QFabric system, the formation is known as a network Node group.
Interconnect devices—An Interconnect device acts as the primary fabric for data plane
traffic traversing the QFabric system between Node devices. To reduce latency to a
minimum, the Interconnect device implements multistage Clos switching to provide
nonblocking interconnections between any of the Node devices in the system.
Control plane network—The control plane network is an out-of-band Gigabit Ethernet
management network that connects all QFabric system components. For example,
you can use a group of EX4200 Ethernet switches or a group of EX4300 Ethernet
switches configured as a Virtual Chassis to enable the control plane network. The
control plane network connects the Director group to the management ports of the
Node and Interconnect devices. By keeping the control plane network separate from
the data plane, the QFabric system can scale to support thousands of servers and
storage devices.
The four major QFabric system components can be assembled from a variety of hardware
options. Currently supported hardware configurations are shown in
Node Device
QFX3500, QFX3600, and
QFX5100-48S, QFX5100-48T, and
QFX5100-24Q Node devices
NOTE: There can be a maximum
of 128 Node devices in the
QFX3000-G QFabric system.
Table 3 on page
Interconnect
Device Control Plane Device
QFX3008-I Two Virtual Chassis
Interconnect composed of either four
device EX4200-48T or four
EX4300-48T switches
NOTE: There can
each (for a copper-based
be a maximum of
control plane) or eight
four Interconnect
EX4200-24F or four
devices in the
EX4300-48P switches
QFX3000-G
each (for a fiber-based
QFabric system.
control plane)
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