System Architecture; Cooling And Power; Table 4: Port Capacities - Juniper QFX10002 Hardware Manual

QFX10002 Switch Hardware Guide

Table 4: Port Capacities

10 Gigabit Ethernet
40 Gigabit Ethernet
100 Gigabit Ethernet
22
QFX10002-36Q
144
36
12

System Architecture

The system architecture cleanly separates control operations from packet forwarding
operations. This design eliminates processing and traffic bottlenecks, permitting the
QFX10002 to achieve high performance.
Control operations are performed by the Routing Engine, which runs the Juniper
Networks Junos operating system (Junos OS). The Routing Engine handles routing
protocols, traffic engineering, policy, policing, monitoring, and configuration
management. Junos OS is installed on the QFX10002 internal solid-state drives (SSDs).
QFX10002-36Q and QFX10002-72Q have 2 x 32-GB SSD and the QFX10002-60C has
2 x 64-GB SSDs. The Routing Engine is enhanced by a 2.5-GHz quad core Intel CPU
and 32 GB of SDRAM.
Forwarding operations are performed by the Packet Forwarding Engines, which include
custom ASICs designed by Juniper Networks. The Q5 ASICs enable the QFX10002 to
provide up to 2.88 terabits per second (Tbps) of throughput on the QFX10002-36Q,
5.76 Tbps on the QFX10002-72Q and 12 Tbps on the QFX10002-60C. The Q5 ASICs
are connected to Hybrid Memory Cubes (HMCs). These high-efficiency memory modules
provide packet buffering, virtual output queue (VOQ) memory, and improved logical
system scale.

Cooling and Power

The cooling system in a QFX10002 consists of three 80-W fan modules that operate at
150 cubic feet per minute (CFM) at full speed as well as fans housed in the power supplies.
Each fan modules has dual counter-rotating fans. These fan modules can be hot-swapped
and hot-inserted, meaning that– you do not need to power off the switch or disrupt the
switching function to replace a module.
in the QFX10002 cooling system, cool air enters through the vents in the port panel and
hot air exhausts through the field-replaceable unit (FRU) panel. This type of airflow is
known as airflow out or port-to-FRU airflow.
The four AC or DC 1600-W power supplies are installed by the factory in the
QFX10002-72Q and QFX10002-60C; two power supplies are installed in the
QFX10002-36Q. See Figure 4 on page 23
panel. Each power supply provides 12 VDC output with a standby voltage of 12-VDC.The
AC or DC power supplies in a QFX10002 are hot-removable and hot-insertable FRUs.
QFX10002-60C QFX10002-72Q
192 288
60 72
60 24
for an example of the QFX10002-72Q FRU
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