Spec Sheet

4
Data SheetQFX5100 Ethernet Switch
The QFX5100-48T offers 48 RJ-45-based 10GbE ports and up
to six 40GbE ports for providing uplinks to aggregation switches.
Each RJ-45 port can operate in three different speeds, providing
10GbE, 1GbE or 100 Mbps server connectivity using the same
shielded twisted pair copper cables. Distances up to 100m can
be supported using cables that conform to IEEE 802.3-2012
specifications, enabling the QFX5100-48T to be deployed as a
top-of-rack, middle-of-row or end-of-row switch.
The 2 U QFX5100-96S is a high-density native 10GbE data center
access switch that is ideal for deployments with a high degree of
application redundancy. The highly efficient QFX5100-96S offers
96 ports of native 10GbE for server connectivity and eight 40GbE
ports for uplink connectivity, providing very low oversubscription
of 3:1 from access to aggregation.
The QFX5100-24Q offers 24 QSFP+ ports in the base unit with
an option to scale up to 32 QSFP+ ports with two four-port
expansion modules. Each QSFP+ port can be used for native
40GbE server port connectivity or channelized into four 10GbE
ports for 10GbE server connectivity, offering maximum flexibility
and investment protection for data center growth.
Each of the QFX5100 switches can operate in both cut-through
and store-and-forward modes, delivering sustained wire-
speed switching with sub-microsecond latency and low jitter
for any packet size (including jumbo frames) in both modes.
All QFX Series switches support extensive Layer 2 features,
enabling the device to support high-density 10GbE/FCoE Layer
2 access deployments. With features such as multi-chassis
link aggregation group (MC-LAG), the QFX5100 supports
active/active server dual homing and can utilize full bisectional
bandwidth from server to switch. When the QFX5100 is deployed
in the access layer, MC-LAG on QFX10000 switches in the
aggregation layer provides maximum resiliency and full Layer 2
multi-pathing in the network (see Figure 2).
The Junos operating system features the most advanced and
robust routing capabilities in the industry. All QFX5100 switches
include support for RIP and OSPF for both IPv4 and IPv6 in the
base software. Advanced routing capabilities such as IS-IS and
BGP are also supported. With additional capabilities like 64-way
equal-cost multipath (ECMP) and BGP add path, the QFX5100
is an ideal building block for deploying the most robust Layer 3
underlay for software-defined networks (SDN) (see Figure 3).
In addition, the QFX5100 also supports Virtual Chassis Fabric
and QFabric System deployments. These fabric technologies
support both Layer 2 multi-pathing and Layer 3 ECMP paths
within the same network fabric while dramatically reducing the
number of user configured protocols, thus eliminating the need
to run protocols such as Virtual Router Redundancy Protocol
(VRRP) for Layer 3 gateway load balancing and complex multicast
protocols to set up replication trees. Virtual Chassis Fabric and
QFabric technology dramatically reduce the complexity and cost
of managing the data center network by making multiple switches
appear as a single, logical device. Virtual Chassis Fabric allows up
to 20 individual switches to be managed via a single CLI, while a
QFabric System enables up to 128 Nodes to operate as a single
device (see Figures 4 and 5).
Figure 2: QFX5100 at the access layer
QFX5100
MC-LAG
QFX10002
40GbE40GbE 40GbE
MC-LAG
EX4300
Virtual Chassis
QFX10016
MC-LAG
QFX5100
MC-LAG
QFX5100
MC-LAG
40GbE40GbE 40GbE
EX4300
Virtual Chassis
QFX5100
MC-LAG
Figure 3: Larger scale data center with Layer 3 to the access
QFX5100 QFX5100 QFX5100
QFX5100 QFX5100 QFX5100
QFX5100 QFX5100
16 way L3 ECMP