Juniper EX4650 Series User Manual

Table 9: Status LED on SFP+ Uplink Ports
State and DescriptionLCD IndicatorLED
Indicates the speed. The speed indicators are:
•
Blinking green—1 Gbps and 10 Gbps
•
Stable green—25 Gbps
GreenStatus
Table 10 on page 33 describes the Status LED on QSFP+ ports in EX4650 switches.
Table 10: Status LED on QSFP+ Ports
State and DescriptionLCD IndicatorLED
Indicates the status. The status indicators are:
•
Unlit—40-Gigabit port/100-Gigabit port is down.
•
Steadily green—40-Gigabit port is up.
GreenStatus
EX4650 Cooling System
IN THIS SECTION
Fan Modules | 34
Airflow Direction in EX4650 Switch Models | 35
Front-to-Back Airflow | 36
Back-to-Front Airflow | 37
Do Not Mix AIR IN (AFI) and AIR OUT (AFO) Components in the Switch | 38
Positioning the Switch | 39
Fan Module Status | 39
The cooling system in an EX4650 switch consists of five fan modules and each power supply has its own
fans. The switch can be set up to work in one of two airflow directions depending on the fan modules and
power supplies installed in the switch.
•
Back-to-front airflow (air enters through the back of the switch), indicated by the label AIR IN (AFI)
33

Juniper EX4650 Series Specifications

General

Cooling	Front-to-back or back-to-front airflow
Rack Units	1U
MAC address table size	288, 000 entries
Memory	16 GB
Storage	64 GB SSD
Power Supply	Dual redundant, hot-swappable
Junos OS	Supported
Jumbo frames	9216 bytes
Operating temperature	0°C to 40°C (32°F to 104°F)
Input voltage	AC: 100-240V
Fans	Hot-swappable, redundant
Operating humidity	5% to 90% (non-condensing)
Ports	48 x 10GbE SFP+/SFP28 ports 8 x 40GbE QSFP+/100GbE QSFP28 ports