Juniper EX4300 Series User Manual

Troubleshoot Temperature Alarms in EX Series Switches
IN THIS SECTION
Problem | 334
Cause | 334
Soluon | 334
Problem
Descripon
EX Series switches trigger a temperature alarm FPC 0 EX-PFE1 Temp Too Hot when the switch temperature
becomes too hot.
Cause
Temperature sensors in the chassis monitor the temperature of the chassis. The switch triggers an alarm
if a fan fails or if the temperature of the chassis exceeds permissible levels for some other reason.
Soluon
When the switch triggers a temperature alarm such as the FPC 0 EX-PFE1 Temp Too Hot alarm, use the show
chassis environment and the show chassis temperature-thresholds commands to idenfy the condion that
triggered the alarm.
CAUTION: To prevent the switch from overheang, operate it in an area with an
ambient temperature within the recommended range. To prevent airow restricon,
allow at least 6 inches (15.2 cm) of clearance around the venlaon openings.
1. Connect to the switch by using Telnet, and issue the show chassis environment command. This command
displays environmental informaon about the switch chassis, including the temperature. The
command also displays informaon about the fans, power supplies, and Roung Engines. Following is
a sample output on an EX9208 switch. The output is similar on other EX Series switches.
334

Juniper EX4300 Series Specifications

General

Product Series	EX4300 Series
Power Consumption	Varies by model and configuration
Virtual Chassis Technology	Up to 10 switches
Software	Junos OS
Ports	24-port and 48-port models
10GBASE SFP+ Ports	Up to 8 ports
40GBASE QSFP+ Ports	2
Uplink Ports	Up to 4 ports
Jumbo Frames	Up to 9216 bytes
Operating Temperature	0°C to 45°C
Relative Humidity	5% to 90% noncondensing
Input Voltage	100 to 240V AC
Power Supply	AC or DC
Power Supply Options	AC or DC
Stacking	Yes
Layer 2 Features	Includes VLAN, STP, RSTP, MSTP, LACP
Layer 3 Features	OSPF, BGP
Management	CLI, Web GUI, SNMP
Security Features	DHCP snooping
QoS	8 queues per port, DSCP
Storage Temperature	-40°C to 70°C