Cooling System And Airflow In An Ex4300 Switch - Juniper EX4300 Series Hardware Manual

Table 26: Status LED on the Ports on the 4-Port 1-Gigabit Ethernet SFP/10-Gigabit Ethernet SFP+
Uplink Module for EX4300-48MP and EX4300-48MP-S Switches
LED LCD Indicator
Status Green

Cooling System and Airflow in an EX4300 Switch

IN THIS SECTION
Fan Modules | 83
Airflow Direction in EX4300 Switch Models | 84
Front-to-Back Airflow | 86
Back-to-Front Airflow | 88
Do Not Mix AIR IN (AFI) and AIR OUT (AFO) Components in the Switch | 88
Positioning the Switch | 89
Fan Module Status | 89
The cooling system in an EX4300 switch consists of two fan modules and a single fan in each power
supply. EX4300 switches provide back-to-front airflow (air enters through the back of the switch),
indicated by the label AIR IN (AFI), or front-to-back (air exhausts through the back of the switch),
indicated by the label AIR OUT (AFO)-depending on the fan modules and power supplies installed in
the switch.
This topic describes:
State and Description
Indicates the speed. The speed indicator is:
•
Steadily green-1 or 10 Gbps
82