Juniper EX4300 Series User Manual

Troubleshoong the EX4300 Components
IN THIS SECTION
Understand Alarm Types and Severity Levels on EX Series Switches | 320
Chassis Component Alarm Condions on EX4300 Switches | 322
Check Acve Alarms with the J-Web Interface | 325
Monitor System Log Messages | 326
Troubleshoong PoE Voltage Injecon Failure in EX2300, EX3400, or EX4300 Switch Models with PoE
Capability | 333
Troubleshoot Temperature Alarms in EX Series Switches | 334
Understand Alarm Types and Severity Levels on EX Series Switches
NOTE: This topic applies only to the J-Web Applicaon package.
Alarms alert you to condions that might prevent normal operaon of the switch. Before monitoring
alarms on a Juniper Networks EX Series Ethernet switch, become familiar with the terms dened in
Table 89 on page 320.
Table 89: Alarm Terms
Term Denion
alarm Signal alerng you to condions that might prevent normal operaon. On a switch, the
alarm signal is the ALM LED lit on the front of the chassis.
alarm condion Failure event that triggers an alarm.
alarm severity Seriousness of the alarm. If the Alarm (ALM) LED is red, this indicates a major alarm. If
the Alarm LED is yellow or amber, this indicates a minor alarm. If the Alarm LED is unlit,
there is no alarm or the switch is halted.
320

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