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Juniper EX4200 User Manual

Juniper EX4200
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CHAPTER 24
Alarms and Syslog Messages
Understanding Alarm Types and Severity Levels on EX Series Switches on page 255
Checking Active Alarms with the J-Web Interface on page 256
Monitoring System Log Messages on page 257
Understanding Alarm Types and Severity Levels on EX Series Switches
NOTE: This topic applies only to the J-Web Application package.
Alarms alert you to conditions that might prevent normal operation of the switch. Before
monitoring alarms on a Juniper Networks EX Series Ethernet switch, become familiar
with the terms defined in Table 60 on page 255.
Table 60: Alarm Terms
DefinitionTerm
Signal alerting you to conditions that might prevent normal operation. On a switch, the alarm
signal is the ALM LED lit on the front of the chassis.
alarm
Failure event that triggers an alarm.alarm condition
Seriousness of the alarm. If the Alarm (ALM) LED is red, this indicates a major alarm. If the Alarm
LED is yellow, this indicates a minor alarm. If the Alarm LED is unlit, there is no alarm or the switch
is halted.
alarm severity
Preset alarm triggered by a physical condition on the switch such as a power supply failure,
excessive component temperature, or media failure.
chassis alarm
Preset alarm triggered by a missing rescue configuration or failure to install a license for a licensed
software feature.
NOTE: On EX6200 switches, a system alarm can be triggered by an internal link error.
system alarm
Alarm Types
255Copyright © 2015, Juniper Networks, Inc.

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Juniper EX4200 Specifications

General IconGeneral
ModelEX4200
Switching Capacity128 Gbps
LayerLayer 2 and Layer 3
Form Factor1U
Throughput96 Mpps
Maximum VLANs4096
MAC Address Table Size16, 000
DRAM1 GB
Flash Memory1 GB
Forwarding Rate96 Mpps
JUNOS SoftwareYes
Ports24 or 48
StackingUp to 10 switches in a Virtual Chassis configuration
Power SupplyAC or DC
ManagementCLI, SNMP, J-Web
Input Voltage100-240 VAC or -48 VDC
Operating Temperature0°C to 45°C
RedundancyRedundant power supplies
Virtual Chassis TechnologyYes
Storage Temperature-40°C to 70°C
Humidity5% to 90% non-condensing

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