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Troubleshoot the EX4100-H Components

Chassis Component Alarm Conditions on EX4100-H Switches

This topic describes the chassis component alarm conditions on EX4100-H switches.

Table 1 lists the alarms that the chassis components can generate on EX4100-H switches. The table lists the severity levels of these alarms and the actions that you can take to respond to them.

Table 1: Chassis Component Alarm Conditions on EX4100-H Switches

Chassis Component

Alarm Condition

Alarm Severity

Remedy

Power supply

A power supply has been removed from the chassis.

Minor

Install a power supply in the empty slot.

A power supply output has failed.

Major

Check the power supply output connection.

A power supply has failed.

Major

Replace the failed power supply.

An unknown power supply is installed.

Major

Install a power supply recommended by Juniper Networks.

A mix of power supplies with different airflow directions is installed.

Major

Do not mix power supplies with different airflow directions in the same chassis.

Temperature

The temperature inside the chassis reached the red alarm limit.

Major

  • Open a support case using the Case Manager link at https://www.juniper.net/support/, or call 1-888-314-5822 (toll-free within the United States and Canada) or 1-408-745-9500 (from outside the United States).

Humidity

The humidity inside the chassis reached the red alarm limit.

Major

  • Open a support case using the Case Manager link at https://www.juniper.net/support/, or call 1-888-314-5822 (toll-free within the United States and Canada) or 1-408-745-9500 (from outside the United States).

The humidity inside the chassis reached the yellow alarm limit.

Minor

  • Open a support case using the Case Manager link at https://www.juniper.net/support/, or call 1-888-314-5822 (toll-free within the United States and Canada) or 1-408-745-9500 (from outside the United States).

Management Ethernet interface

The Management Ethernet link is down.

Major

  • Check whether a cable is connected to the Management Ethernet interface or whether the cable is defective. Replace the cable, if required.

  • If you are unable to resolve the problem, open a support case using the Case Manager link at https://www.juniper.net/support/, or call 1-888-314-5822 (toll-free within the United States and Canada) or 1-408-745-9500 (from outside the United States).

Routing Engine

The /var partition usage is high.

Minor

Clean up the system file storage space on the switch. For more information, see Freeing Up System Storage Space.

The /var partition is full.

Major

Clean up the system file storage space on the switch. For more information, see Freeing Up System Storage Space.

A rescue configuration is not set.

Minor

Use the request system configuration rescue save command to set the rescue configuration.

The feature usage requires a license, or the license for the feature usage has expired.

Minor

Install the required license for the feature specified in the alarm. For more information, see Understanding Software Licenses for EX Series Switches.

Troubleshoot Temperature Alarms in EX4100-H Series Switches

Problem

Description

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 if the temperature of the chassis exceeds permissible levels for some other reason.

Solution

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 identify the condition that triggered the alarm.

CAUTION:

To prevent the switch from overheating, operate it in an area with an ambient temperature within the recommended range. To prevent airflow restriction, allow at least 2 inches (5.08 cm) of clearance around the ventilation openings., refer Table 2.

  1. Connect to the switch by using Telnet, and issue the show chassis environment command. This command displays environmental information about the switch chassis, including the temperature. Following is a sample output on an EX4100-H-12MP switch.

    show chassis environment

    The following table lists the output fields for the show chassis environment command. The table lists output fields in the approximate order in which they appear.

    Table 2: show chassis environment Output Fields

    Field Name

    Field Description

    Class

    Information about the category or class of chassis component:

    • Power: Status of power supply in the switch

    • Temp: Temperature of air flowing through the chassis in degrees Celsius (°C) and degrees Fahrenheit (°F)

    • Humid: Status of relative humidity in the switch.

    Item

    Information about the chassis components:

    • Flexible PIC Concentrators (FPCs)—that is, the line cards

    • Control Boards (CBs)

    • Routing Engines

    • Power entry modules (PEMs)—that is, the power supplies

    Status

    Status of the specified chassis component. For example, if Class is Power, the status can be:

    • OK: The component is operational.

    • Testing: The power supply unit is being tested during initial power-on.

    • Failed: The power supply unit has failed.

    • Absent: The power supply unit is not connected to the switch.

    Measurement

    Depends on the Class. For example, if Class is Temp, indicates the temperature in degrees Celsius (°C) and degrees Fahrenheit (°F). If the Class is Humid, indicates humidity in percent relative humidity.

  2. Issue the command show chassis temperature-thresholds . This command displays the chassis temperature threshold settings. The following is a sample output on an EX4100-H-12MP switch. Note that some columns that do not apply to the switch are displayed as N/A or not applicable.

    show chassis temperature-thresholds.

    Table 3 lists the output fields for the show chassis temperature-thresholds command. The table lists output fields in the approximate order in which they appear.

    Table 3: show chassis temperature-thresholds Output Fields

    Field Name

    Field Description

    Item

    Chassis component. You can configure the threshold information for components such as the chassis, the Routing Engines, and FPC for each slot in each FRU to display in the output. By default, information is displayed only for the chassis and the Routing Engines.

    Red alarm

    Temperature threshold, in degrees Celsius, that triggers a red alarm.

    • Normal—The temperature threshold that must be exceeded on the device to trigger a red alarm.

    Fire shutdown

    Temperature threshold, in degrees Celsius, at which the switch shuts down in case of fire.

When a temperature alarm is triggered, you can identify the condition that triggered it by running the show chassis environment command to display the chassis temperature values for each component and comparing those with the temperature threshold values. You can display the temperature threshold values by running the show chassis temperature-thresholds command.

Table 4 lists the possible causes for the switch to generate a temperature alarm. It also lists the respective remedies.

Table 4: Causes and Remedies for Temperature Alarms

Cause

Remedy

Ambient temperature is above threshold temperature.

Ensure that the ambient temperature is within the threshold temperature limit. See Environmental Requirements and Specifications for EX Series Switches.

Restricted airflow through the switch due to insufficient clearance around the installed switch.

Ensure that there is sufficient clearance around the installed switch. For EX4100-H-12MP switches, see Table 2.

EX4100-H Switch Hardware and CLI Terminology Mapping

This topic describes the hardware terms used in EX4100-H switch documentation and the corresponding terms used in the Junos OS CLI (see Table 5).

Table 5: CLI Equivalents of Terms Used in the Documentation for EX4100-H Switches

Hardware Item (CLI)

Description (CLI)

Value

Item In Documentation

Additional Information

Chassis

One of the following:

  • EX4100-H-12MP

  • EX4100-H-24MP

  • EX4100-H-24F

–

Switch chassis

EX4100-H Switch Models

Routing Engine (n)

One of the following:

  • RE-EX4100-H-12MP

  • RE-EX4100-H-24MP

  • RE-EX4100-H-24F

n is a value in the range 0 through 9.

  • In a standalone switch, the default value is 0.

  • In a Virtual Chassis configuration, the values correspond to the member IDs of switches configured in the primary role and the backup role in the Virtual Chassis.

Routing Engine

–

FPC (n)

Abbreviated name of the Flexible PIC Concentrator (FPC)

One of the following:

  • EX4100-H-12MP-CHAS

  • EX4100-H-24MP-CHAS

  • EX4100-H-24F-CHAS

n is a value in the range 0 through 9.

 

Understanding Interface Naming Conventions

In a standalone switch, the default value is 0.

In this case, FPC refers to the switch itself.

In a Virtual Chassis configuration, the values correspond to the assigned member IDs of switches in the Virtual Chassis.

In this case, the FPC number refers to the member ID assigned to the switch.

PIC (n)

Abbreviated name of the Physical Interface Card (PIC)

n is a value in the range 0 through 2.

  

Understanding Interface Naming Conventions

One of the following:

  • EX4100-H-12MP Switches: 4x100M/1G/2.5G, 8x10M/100M/1G Base-T

  • EX4100-H-24MP Switches: 8x100M/1G/2.5G, 16x10M/100M/1G

  • EX4100-H-24F Switches: 24x10M/100M/1G SFP

PIC 0

PIC 0 stands for built-in network ports numbered 0 through 11 or 0 through 23 or 0 through 47

EX4100-H Switch Models

One of the following:

  • EX4100-H-12MP switches: 2x1G/10G SFP/SFP+

  • EX4100-H-24MP switches: 4x1G/10G SFP/SFP+

  • EX4100-H-24F switches: 4x1G/10G SFP/SFP+

PIC 1

SFP/SFP+ dedicated virtual chassis ports

EX4100-H Switch Models

One of the following:

  • EX4100-H-12MP switches: 2x1G/10G SFP/SFP+

  • EX4100-H-24MP switches: 4x1G/10G SFP/SFP+

  • EX4100-H-24F switches: 4x1G/10G SFP/SFP+

PIC 2

SFP/SFP+ uplink ports

EX4100-H Switch Models

Xcvr (n)

Abbreviated name of the transceiver

n is a value equivalent to the number of the port in which the transceiver is installed.

Optical transceivers

Pluggable Transceivers and Cables Supported on EX4100-H Switches

Power supply (n)

One of the following:

  • JPSU-H-340W-E

  • JPSU-H-340W-AC

  • JPSU-H-340W-DC

  • JPSU-H-90W-AC

  • JPSU-H-90W-DC

n has a value 0 or 1, corresponding to the power supply slot number.

AC power supply or DC power supply