Spec Sheet
3
Data SheetQFX5100 Ethernet Switch
Virtual Chassis Fabric Switching Architecture
Existing Virtual Chassis technology is further scaled and enhanced
to support a spine-and-leaf topology that is ideal for high-
performance and low-latency data center deployments. In its
first instance, this topology, called Virtual Chassis Fabric, enables
up to 20 QFX5100 switches to be deployed in a spine-and-leaf
configuration, with two to four QFX5100s in the spine and up to 18
QFX5100s as leaf nodes. This architecture provides any-rack-to-
any-rack deterministic throughput and less than 3 microseconds
of latency, while significantly simplifying network operations
through a single point of management. EX4300, QFX3500, and
QFX3600 switches can also act as leaf nodes in a Virtual Chassis
Fabric deployment, providing support for data centers with
mixed 1GbE, 10GbE, and 40GbE servers as well as environments
transitioning from 1GbE to 10GbE or 40GbE servers while
protecting existing EX4300, QFX3500, and QFX3600 investments.
The QFX5100 also supports a Layer 2 VxLAN Gateway feature
in Virtual Chassis Fabric mode, creating a single Hardware VTEP
for an entire Virtual Chassis Fabric pod (a single management
domain of up to 20 devices) that would exist on all nodes. Virtual
Chassis Fabric enables a plug-and-play architecture; hence
no VTEP configuration changes are required when adding or
removing nodes from the Virtual Chassis Fabric pod. For MAC
address learning, Virtual Chassis Fabric supports both EVPN as
well as OVSDB, and also integrates with VMware NSX.
Junos Fusion
Junos Fusion, an IEEE 802.1Br standards-based Ethernet fabric, is
ideal for mid-to-large data center customers who want simplicity
at scale.
The open, easy-to-deploy Junos Fusion provides a single point of
management and plug-and-play operation for networks with a
choice of 1GbE, 10GbE and 40GbE for server access. In a Junos
Fusion deployment, QFX5100 switches are deployed as Satellite
devices that are managed by the QFX10000 switches deployed
as Aggregation devices. (see Figure 1).
QFabric System
The QFX5100-48S and QFX5100-48T can also act as a QFabric
Node device in a QFX3000-M and QFX3000-G QFabric System.
The QFX5100-48S and QFX5100-48T are fully interoperable
with existing QFX3500 and QFX3600 QFabric Nodes, providing
backward compatibility and investment protection. With a
mixture of QFX3500, QFX3600, and QFX5100 Nodes, a QFabric
System can scale on a node by node basis without being limited
by the lowest common denominator.
Data Center Deployments
Today’s data centers are built with high-performance, small
form-factor, multicore blade and rack servers. The greater
compute capacity and server densities enabled by these devices
is increasing traffic levels, creating the need for high-speed, low-
latency, storage- and I/O-converged networking solutions that
can maximize performance for physical servers, virtual servers,
and storage in the data center.
The QFX5100 line oers a portfolio of switches that deliver the
low-latency, lossless, high-density 10GbE and 40GbE interfaces
with the Fibre Channel over Ethernet (FCoE) transit switch
functionality demanded by today’s data center. All QFX5100
models are designed to consume the lowest power possible while
optimizing space, thereby reducing data center operating costs.
Flexible airflow direction options enable the QFX5100 to support
back-to-front and front-to-back cooling, ensuring consistency with
server designs for hot- and cold-aisle deployments.
Data Center Server Access
The QFX5100 line of switches is ideal for top-of-rack
deployments of various densities and speeds.
The compact 1 U QFX5100-48S oers 48 ports of native 10GbE
for server connectivity and up to six 40GbE ports for uplink
connectivity, providing very low oversubscription of 2:1 from access
to aggregation. Each 40GbE port can be further broken out into four
10GbE ports, providing additional 10GbE for server connectivity.
Figure 1: Junos Fusion deployments using QFX1000 switches as Aggregation devices and EX4300 and
QFX5100 switches as Satellite devices.
QFX10002 Aggregation Devices
QFX5100/EX4300 Satellites
QFX10016 Modular Aggregation Devices
QFX5100/EX4300 Satellites