Juniper EX4600

Table 8: Expansion Module Status LED
LED State Descripon
ST Unlit
• The expansion module is oine.
• The chassis is powered o.
Green
• The expansion module is online and funconing normally.
EX4600 Cooling System
IN THIS SECTION
Cooling System and Airow in an EX4600 Switch | 21
Fan Module LED on an EX4600 Switch | 27
Cooling System and Airow in an EX4600 Switch
IN THIS SECTION
Fan Modules | 22
Do Not Install Components with Dierent Airow or Waage in the Switch | 25
Fan Module Status | 25
The cooling system in an EX4600 switch consists of ve fan modules and a single fan in each power
supply. The switch can be set up to work in one of two airow direcons:
• Airow In–Air enters the switch through the vents in the eld-replaceable units (FRUs)
21