Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

close
keyboard_arrow_left
Junos CLI Reference
Table of Contents Expand all
list Table of Contents
file_download PDF
keyboard_arrow_right

show chassis alarms

date_range 09-Jan-25

Syntax

content_copy zoom_out_map
show chassis alarms

Syntax (MX Series Routers)

content_copy zoom_out_map
show chassis alarms
<all-members>
<local>
<member member-id>

Syntax (SRX1500, SRX4100, and SRX4200)

content_copy zoom_out_map
show chassis alarms
1 alarms currently active
Alarm time               Class  Description
2020-02-28 10:07:16 CST  Major  FPC0: PEM 0 Not Present

Syntax (SRX4600)

content_copy zoom_out_map
show chassis alarms
node0:
--------------------------------------------------------------------------
2 alarms currently active
Alarm time Class Description
2020-10-08 19:42:06 UTC Major FPC 0 BITS CPLD Version Mismatch
2020-10-08 19:42:06 UTC Minor PEM 1 Not Present

Syntax (SRX5400)

content_copy zoom_out_map
show chassis alarms
1 alarms currently active
Alarm time               Class  Description
2021-04-16 17:21:02 PDT  Major  Too Few AC PEMs

Syntax (MX104, MX2010, MX2020, and MX2008 Universal Routing Platforms)

content_copy zoom_out_map
show chassis alarms 
<satellite [slot-id slot-id]>

Syntax (QFX Series)

content_copy zoom_out_map
show chassis alarms
<interconnect-device name>
<node-device name> 

Description

Display information about the conditions that have been configured to trigger alarms. In Junos, the chassis alarms are different from the system alarms (viewed by using the show system alarms command). The system alarms indicate a missing rescue configuration or software license, where valid. For more information, see Alarm Overview.

Options

none

Display information about the conditions that have been configured to trigger alarms.

all-members

(MX Series routers only) (Optional) Display information about alarm conditions for all the member routers of the Virtual Chassis configuration.

interconnect-device name

(QFabric systems only) (Optional) Display information about alarm conditions for the Interconnect device.

local

(MX Series routers only) (Optional) Display information about alarm conditions for the local Virtual Chassis member.

member member-id

(MX Series routers only) (Optional) Display information about alarm conditions for the specified member of the Virtual Chassis configuration. Replace member-id variable with a value of 0 or 1.

node-device name

(QFabric systems only) (Optional) Display information about alarm conditions for the Node device.

satellite [slot-id slot-id]

(Junos Fusion only)(Optional) Display information about alarm conditions for the specified satellite device in a Junos Fusion, or for all satellite devices in the Junos Fusion if no satellite devices are specified.

Additional Information

Chassis alarms are preset. You cannot modify them.

You cannot clear the alarms for chassis components. Instead, you must remedy the cause of the alarm. When a chassis alarm LED is lit, it indicates that you are running the router or switch in a manner that we do not recommend.

On routers, you can manually silence external devices connected to the alarm relay contacts by pressing the alarm cutoff button, located on the craft interface. Silencing the device does not remove the alarm messages from the display (if present on the router) or extinguish the alarm LEDs. In addition, new alarms that occur after you silence an external device reactivate the external device.

Note:

MX10003 routers do not support craft interface.

In Junos OS release 11.1 and later, alarms for fans also show the slot number of the fans in the CLI output.

In Junos OS Release 11.2 and later, the command output on EX8200 switches shows the detailed location (Plane/FPC/PFE) for link errors in the chassis.

In Junos OS Release 10.2 and later, an alarm is shown on T Series routers for a standby SONET Clock Generator (SCG) that is offline or absent.

You may often see the following error messages, in which only the error code is shown and no other information is provided:

content_copy zoom_out_map
Apr 12 08:04:10 send: red alarm set, device FPC 6, reason FPC 6 Major Errors - Error code: 257
Apr 12 08:04:19 send: red alarm set, device FPC 1, reason FPC 1 Major Errors - Error code: 559

To understand what CM_ALARM error codes mean, you need to first identify the structure of the CM Alarm codes. A CM_ALARM code has the following structure:

Table 1: CM_ALARM Code Structure

Bits:

Error type:

1-31

Major (1)

0

Minor (0)

According to the table above, the LSB (bit 0) identifies the Error Type (major alarm, if the bit is set and minor alarm if the bit is unset). The rest of the bits (1 - 31) identify the actual error code.

Take an example of the following error code, which was logged on a T1600:

content_copy zoom_out_map
Apr 12 08:04:10 send: red alarm set, device FPC 1, reason FPC 1 Major Errors - Error code: 559

First, you have to convert 559 to binary; that is 1000101111. The LSB in this case is 1, which means that this is a major alarm. After removing the LSB, you are left with 100010111, which is equal to 279 in decimal. This is the actual error code, its meaning can be found from the following list:

Table 2: L Chip Error Code Meanings

Chip Type: L Chip

Code

CMALARM_LCHIP_LOUT_DESRD_PARITY_ERR

1

CMALARM_LCHIP_LOUT_DESRD_UNINIT_ERR

2

CMALARM_LCHIP_LOUT_DESRD_ILLEGALLINK_ERR

3

CMALARM_LCHIP_LOUT_DESRD_ILLEGALSIZE_ERR

4

CMALARM_LCHIP_LOUT_HDRF_TOERR_ERR

5

CMALARM_LCHIP_LOUT_HDRF_PARITY_ERR

6

CMALARM_LCHIP_LOUT_HDRF_UCERR_ERR

7

CMALARM_LCHIP_LOUT_NLIF_CRCDROP_ERR

8

CMALARM_LCHIP_LOUT_NLIF_CRCERR_ERR

9

CMALARM_LCHIP_UCODE_TIMEOUT_ERR

10

CMALARM_LCHIP_LIN_SRCTL_ACCT_DROP_ERR

11

CMALARM_LCHIP_LIN_SRCTL_ACCT_ADDR_SIZE_ERR

12

CMALARM_LCHIP_SRAM_PARITY_ERR

13

CMALARM_LCHIP_UCODE_OVFLW_ERR

14

CMALARM_LCHIP_LOUT_HDRF_MTU_ERR

15

Table 3: M Chip Error Code Meanings

Chip Type: M Chip

Code

CMALARM_MCHIP_ECC_UNCORRECT_ERR

128

Table 4: N Chip Error Code Meanings

Chip Type: N Chip

Code

CMALARM_NCHIP_RDDMA_JBUS_TIMEOUT_ERR

256

CMALARM_NCHIP_RDDMA_FIFO_OVFLW_ERR

257

CMALARM_NCHIP_RDDMA_FIFO_UNFLW_ERR

258

CMALARM_NCHIP_RDDMA_SIZE_ERR

259

CMALARM_NCHIP_RDDMA_JBUS_CRC_ERR

260

CMALARM_NCHIP_WRDMA_PKTR_ERR

261

CMALARM_NCHIP_WRDMA_PKT_CRC_ERR

262

CMALARM_NCHIP_WRDMA_JBUS_TIMEOUT_ERR

263

CMALARM_NCHIP_WRDMA_FIFO_OVFLW_ERR

264

CMALARM_NCHIP_WRDMA_FIFO_UNFLW_ERR

265

CMALARM_NCHIP_WRDMA_PKT_LEN_ERR

266

CMALARM_NCHIP_WRDMA_JBUS_CRC_ERR

267

CMALARM_NCHIP_PKTR_DMA_AGE_ERR

268

CMALARM_NCHIP_PKTR_ICELLSIG_ERR

269

CMALARM_NCHIP_PKTR_FTTL_ERR

270

CMALARM_NCHIP_RODR_OFFSET_OVFLW_ERR

271

CMALARM_NCHIP_PKTR_TMO_CELL_ERR

272

CMALARM_NCHIP_PKTR_TMO_OUTRANGE_ERR

273

CMALARM_NCHIP_PKTR_MD_REQUEST_Q_OVFLW_ERR

274

CMALARM_NCHIP_PKTR_DMA_BUFFER_OVFLW_ERR

275

CMALARM_NCHIP_PKTR_GRT_OVFLW_ERR

276

CMALARM_NCHIP_FRQ_ERR

277

CMALARM_NCHIP_RODR_IN_Q_OVFLW_ERR

278

CMALARM_NCHIP_DBUF_CRC_ERR

279

Table 5: R Chip Error Code Meanings

Chip Type: R Chip

Code

CMALARM_RCHIP_SRAM_PARITY_ERR

512

Table 6: R Chip Error Code Meanings

Chip Type: R Chip

Code

CMALARM_ICHIP_WO_DESRD_ID_ERR

601

CMALARM_ICHIP_WO_DESRD_DATA_ERR

602

CMALARM_ICHIP_WO_DESRD_OFLOW_ERR

603

CMALARM_ICHIP_WO_HDRF_UCERR_ERR

604

CMALARM_ICHIP_WO_HDRF_MTUERR_ERR

605

CMALARM_ICHIP_WO_HDRF_PARITY_ERR

606

CMALARM_ICHIP_WO_HDRF_TOERR_ERR

607

CMALARM_ICHIP_WO_IP_CRC_ERR

608

CMALARM_ICHIP_WO_IP_INTER_ERR

609

CMALARM_ICHIP_WI_WAN_TIMEOUT_ERR

625

CMALARM_ICHIP_WI_FAB_TIMEOUT_ERR

626

CMALARM_ICHIP_RLDRAM_BIST_ERR

630

CMALARM_ICHIP_SDRAM_BIST_ERR

631

CMALARM_ICHIP_RLDRAM_PARITY_ERR

632

CMALARM_ICHIP_SDRAM_UNCORRECT_ERR

633

CMALARM_ICHIP_SDRAM_CORRECT_ERR

634

CMALARM_ICHIP_FUSE_DONE_ERR

635

According to the table above, the 279 error code corresponds to CMALARM_NCHIP_DBUF_CRC_ERR; this means that new CRC errors were seen on the NCHIP of this particular FPC, which is FPC as per the logs.

If you do not want to convert decimal to binary and vice versa, you may use the following shortcut:

For major alarms, the Actual Error Code = (Error Code - 1)/2, where Error Code is the code that you get in the log message. For example, if you get the following log:

content_copy zoom_out_map
    Apr 12 08:04:10 send: red alarm set, device FPC 6, reason FPC 6 Major Errors - Error code: 257

Actual Error Code = (257-1)/2 = 128. Similarly, for minor alarms, Actual Error Code = (Error Code)/2

Note:

Starting in Junos OS Release 18.2R1, on MX Series routers, the show chassis alarms output does not display error codes for PFE-related errors. You can use the following commands to view more details of the errors that caused the alarms:

  • show chassis errors active

  • show chassis errors active detail

Required Privilege Level

view

Output Fields

Table 7 lists the output fields for the show chassis alarms command. Output fields are listed in the approximate order in which they appear.

Table 7: show chassis alarms Output Fields

Field Name

Field Description

Alarm time

Date and time the alarm was first recorded.

Class

Severity class for this alarm: Minor or Major.

Description

Information about the alarm. When optics are connected to the device, the output displays the transceiver name instead of interface name.

Sample Output

show chassis alarms (Alarms Active)

content_copy zoom_out_map
user@host> show chassis alarms
3 alarms are currently active
Alarm time               Class  Description
2000-02-07 10:12:22 UTC Major fxp0: ethernet link down 
2000-02-07 10:11:54 UTC Minor YELLOW ALARM - PEM 1 Removed 
2000-02-07 10:11:03 UTC Minor YELLOW ALARM - Lower Fan Tray Removed

show chassis alarms (No Alarms Active)

content_copy zoom_out_map
user@host> show chassis alarms
No alarms are currently active

show chassis alarms (Fan Tray)

content_copy zoom_out_map
user@host> show chassis alarms
4 alarms currently active
Alarm time               Class  Description
2010-11-11 20:27:38 UTC  Major  Side Fan Tray 7 Failure
2010-11-11 20:27:13 UTC  Minor  Side Fan Tray 7 Overspeed
2010-11-11 20:27:13 UTC  Major  Side Fan Tray 5 Failure
2010-11-11 20:27:13 UTC  Major  Side Fan Tray 0 Failure

show chassis alarms (MX2010 Router)

content_copy zoom_out_map
user@host> show chassis alarms
7 alarms currently active
Alarm time               Class  Description
2012-08-07 00:46:06 PDT  Major  Fan Tray 2 Failure
2012-08-06 18:24:36 PDT  Minor  Redundant feed missing for PSM 6
2012-08-06 07:41:04 PDT  Minor  Redundant feed missing for PSM 8
2012-08-04 02:42:06 PDT  Minor  Redundant feed missing for PSM 5
2012-08-03 21:14:24 PDT  Minor  Loss of communication with Backup RE
2012-08-03 12:26:03 PDT  Minor  Redundant feed missing for PSM 4
2012-08-03 10:40:18 PDT  Minor  Redundant feed missing for PSM 7

show chassis alarms (MX2020 Router)

content_copy zoom_out_map
user@host> show chassis alarms
1 alarms currently active
Alarm time Class Description
2012-10-03 12:14:59 PDT Minor Plane 0 not online

show chassis alarms (MX10004 Router)

content_copy zoom_out_map
user@host> show chassis alarms
2 alarms currently active
Alarm time               Class  Description
2022-07-05 20:34:40 PDT  Major  Fan Tray 0 EEPROM Read Error
2021-17-05 11:06:47 PST  Minor  Check plane 0 Fabric Chip
content_copy zoom_out_map
user@host> show chassis alarms | match PEM
2021-11-12 13:19:35 UTC Major PEM 2 Not Supported
content_copy zoom_out_map
user@host> show system alarms | match Fan
2021-09-27 19:13:15 PDT Major Fan Tray 0 Model Not Supported
-->

show chassis alarms (MX2008 Router)

content_copy zoom_out_map
user@host>show chassis alarms
No alarms currently active

show chassis alarms (MX960, MX480, and MX240 Routers showing Major CB Failure)

A major CB 0 failure alarm occurs in the event of a bad CB (unknown or mismatched CBs do not trigger this alarm in Junos Release OS 12.3R9 and later). Following GRES or recovery, if the hardware issue persists, the traffic moves to the good CB and continues. If the alarm was triggered by something transient like a power zone budget on GRES, bringing the CB back online can clear the alarm. Otherwise, replace the bad CB. Note that fabric link speed is not impacted by an offline SCB. The alarm migh be raised on CB0, CB1, and CB2.

content_copy zoom_out_map
user@host> show chassis alarms
6 alarms currently active
Alarm time               Class  Description
2014-10-31 16:49:41 EDT  Major  PEM 3 Not OK
2014-10-31 16:49:41 EDT  Major  PEM 2 Not OK
2014-10-31 16:49:31 EDT  Major  CB 0 Failure
2014-10-31 16:49:31 EDT  Minor  CB 0 Fabric Chip 0 Not Online
2014-10-31 16:49:31 EDT  Minor  CB 0 Fabric Chip 1 Not Online
2014-10-31 16:49:31 EDT  Minor  Backup RE Active

show chassis alarms (PTX10008 Router)

content_copy zoom_out_map
user@host>show chassis alarms
12 alarms currently active
Alarm time               Class  Description
2017-05-09 01:38:55 PDT  Minor  Loss of communication with Backup RE
2017-05-05 06:49:57 PDT  Major  FPC 5 LCPU Temp Sensor Access Failed
2017-05-05 06:49:57 PDT  Major  FPC 5 PE2 Temp Sensor Hot
2017-05-05 06:49:57 PDT  Major  FPC 5 PE1 Temp Sensor Hot
2017-05-05 06:49:57 PDT  Major  FPC 5 PE0 Temp Sensor Hot
2017-05-05 06:49:57 PDT  Major  FPC 5 Exhaust-C Temp Sensor Hot
2017-05-05 06:49:57 PDT  Major  FPC 5 Exhaust-B Temp Sensor Hot
2017-05-05 06:49:57 PDT  Major  FPC 5 Exhaust-A Temp Sensor Hot
2017-05-05 06:49:57 PDT  Major  FPC 5 Intake-B Temp Sensor Access Failed
2017-05-05 06:49:57 PDT  Major  FPC 5 Intake-A Temp Sensor Access Failed
2017-05-05 06:49:57 PDT  Major  Fan Tray 0 Fan 5 running at lower speed
2017-05-05 06:49:57 PDT  Major  Fan Tray 0 Fan 4 running at lower speed

show chassis alarms (Unreachable Destinations Present on a T Series Router)

content_copy zoom_out_map
user@host> show chassis alarms
10 alarms currently active
Alarm time               Class  Description
2011-08-30 18:43:53 PDT  Major  FPC 7 has unreachable destinations
2011-08-30 18:43:53 PDT  Major  FPC 5 has unreachable destinations
2011-08-30 18:43:52 PDT  Major  FPC 3 has unreachable destinations
2011-08-30 18:43:52 PDT  Major  FPC 2 has unreachable destinations
2011-08-30 18:43:52 PDT  Minor  SIB 0 Not Online
2011-08-30 18:43:33 PDT  Minor  SIB 4 Not Online
2011-08-30 18:43:28 PDT  Minor  SIB 3 Not Online
2011-08-30 18:43:05 PDT  Minor  SIB 2 Not Online
2011-08-30 18:43:28 PDT  Minor  SIB 1 Not Online
2011-08-30 18:43:05 PDT  Major  PEM 1 Not Ok

show chassis alarms (FPC Offline Due to Unreachable Destinations on a T Series Router)

content_copy zoom_out_map
user@host> show chassis alarms
10 alarms currently active
Alarm time               Class  Description
2011-08-30 18:43:53 PDT  Major  FPC 7 offline due to unreachable destinations
2011-08-30 18:43:53 PDT  Major  FPC 5 offline due to unreachable destinations
2011-08-30 18:43:52 PDT  Major  FPC 3 offline due to unreachable destinations
2011-08-30 18:43:52 PDT  Major  FPC 2 offline due to unreachable destinations
2011-08-30 18:43:52 PDT  Minor  SIB 0 Not Online
2011-08-30 18:43:33 PDT  Minor  SIB 4 Not Online
2011-08-30 18:43:28 PDT  Minor  SIB 3 Not Online
2011-08-30 18:43:05 PDT  Minor  SIB 2 Not Online
2011-08-30 18:43:28 PDT  Minor  SIB 1 Not Online
2011-08-30 18:43:05 PDT  Major  PEM 1 Not Ok

show chassis alarms (SCG Absent on a T Series Router)

content_copy zoom_out_map
user@host> show chassis alarms
4 alarms currently active
Alarm time               Class  Description
2011-01-23 21:42:46 PST  Major  SCG 0 NO EXT CLK MEAS-BKUP SCG ABS

show chassis alarms (Backup Routing Engine)

content_copy zoom_out_map
user@host> show chassis alarms
2 alarms are currently active
Alarm time               Class  Description
2005-04-07 10:12:22 PDT  Minor  Host 1 Boot from alternate media
2005-04-07 10:11:54 PDT  Major  Host 1 compact-flash missing in Boot List

show chassis alarms (EX Series Switch)

content_copy zoom_out_map
user@switch> show chassis alarms 

 4 alarms currently active
Alarm time               Class  Description
2014-03-12 15:36:09 UTC  Minor  Require a Fan Tray upgrade
2014-03-12 15:00:02 UTC  Major  PEM 0 Input Failure
2014-03-12 15:00:02 UTC  Major  PEM 0 Not OK
2014-03-12 14:59:51 UTC  Minor  Host 1 Boot from alternate media

show chassis alarms (Alarms Active on the QFX Series and OCX Series Switches)

content_copy zoom_out_map
user@switch> show chassis alarms 
1 alarms currently active
Alarm time               Class  Description
2012-03-05	2:10:24 UTC  Major  FPC 0 PEM 0 Airflow not matching Chassis Airflow

show chassis alarms node-device (Alarms Active on the QFabric System)

content_copy zoom_out_map
user@switch> show chassis alarms node-device
Test
node-device ED3694
3 alarms currently active
Alarm time               Class  Description
2011-08-24 16:04:15 UTC  Major  Test:fte-0/1/2: Link down
2011-08-24 16:04:14 UTC  Major  Test:fte-0/1/0: Link down
2011-08-24 14:21:14 UTC  Major  Test PEM 0 is not supported/powered

show chassis alarms (Alarms Active on the QFabric System)

content_copy zoom_out_map
user@switch> show chassis alarms
IC-1:
--------------------------------------------------------------------------
1 alarms currently active
Alarm time               Class  Description
2011-08-24 16:04:15 UTC  Minor  Backup RE Active

Test:
--------------------------------------------------------------------------
3 alarms currently active
Alarm time               Class  Description
2011-08-24 16:04:15 UTC  Major  Test:fte-0/1/2: Link down
2011-08-24 16:04:14 UTC  Major  Test:fte-0/1/0: Link down
2011-08-24 14:21:14 UTC  Major  Test PEM 0 is not supported/powered

SNG-0:
--------------------------------------------------------------------------

NW-NG-0:
--------------------------------------------------------------------------
1 alarms currently active
Alarm time               Class  Description
2011-08-24 15:49:27 UTC  Major  Test PEM 0 is not supported/powered

show chassis alarms (Alarms Active on an EX8200 Switch)

content_copy zoom_out_map
user@switch> show chassis alarms

6 alarms currently active
Alarm time               Class  Description
2010-12-02 19:15:22 UTC  Major  Fan Tray Failure
2010-12-02 19:15:22 UTC  Major  Fan Tray Failure
2010-12-02 19:15:14 UTC  Minor  Check CB 0 Fabric Chip 1 on Plane/FPC/PFE: 1/5/0, 1/5/1, 1/5/2, 1/5/3, 1/7/0, 1/7/1, 1/7/2, 1/7/3, 2/5/0, 2/5/1, ...
2010-12-02 19:15:14 UTC  Minor  Check CB 0 Fabric Chip 0 on Plane/FPC/PFE: 1/5/0, 1/5/1, 1/5/2, 1/5/3, 1/7/0, 1/7/1, 1/7/2, 1/7/3, 2/5/0, 2/5/1, ...
2010-12-02 19:14:18 UTC  Major  PSU 1 Output Failure
2010-12-02 19:14:18 UTC  Minor  Loss of communication with Backup RE

show chassis alarms (EX9251 Switch)

content_copy zoom_out_map
user@switch> show chassis alarms 

 2 alarms currently active
Alarm time               Class  Description
2018-03-08 05:13:10 PST  Major  PEM 0 Not Powered
2018-03-08 05:13:10 PST  Major  Fan Tray 2 is not present

show chassis alarms (EX9253 Switch)

content_copy zoom_out_map
user@switch> show chassis alarms 

6 alarms currently active
Alarm time               Class  Description
2018-03-07 01:09:01 PST  Major  Power Budget:Insufficient Power
2018-03-06 23:56:34 PST  Minor  Loss of communication with Backup RE
2018-02-15 00:48:10 PST  Minor  PEM 3 Not Present
2018-02-15 00:48:10 PST  Minor  PEM 2 Not Present
2018-02-15 00:48:07 PST  Major  PEM 4 Not Powered
2018-02-15 00:48:07 PST  Major  PEM 1 Not Powered

show chassis alarms (MX Series for PFE reset)

content_copy zoom_out_map
user@host> show chassis alarms
1 alarm currently active
Alarm time               Class  Description
2021-01-04 11:20:42 PST  Major  FPC 0 PFE 0  reset initiated

show chassis alarms (MX Series for PFE reset error)

content_copy zoom_out_map
user@host> show chassis alarms
1 alarm currently active
Alarm time               Class  Description
2021-01-04 11:20:42 PST  Major  FPC 0 PFE 0  reset error

show chassis alarms (MX2010, MX10008, MX10016 and MX10004)

An optics configuration mismatch alarm may be triggered when there is a discrepancy between the configured speed of an interface and the supported speed of the optic. This alarm indicates that the optic installed in the specified FPC is incompatible with the speed configured on the interface. This can be observed through the following output:

content_copy zoom_out_map
root@user> run show chassis alarms
2 alarms currently active
Alarm time               Class  Description
2024-10-14 21:54:38 PDT  Minor  FPC 5 Optics does not support configured speed
2024-10-14 17:07:23 PDT  Minor  FPC 0 Optics does not support configured speed

show chassis alarms (Active Alarm to Indicate Status of the Bad SCB Clock on MX Series)

content_copy zoom_out_map
user@host> show chassis alarms
1 alarm currently active
Alarm time               Class  Description
2013-08-06 07:48:35 PDT  Major  CB 0 19.44 MHz clock failure

show chassis alarms (MX10003 Router)

If LCMD is down on the backup RE, then the following alarm is seen on the primary.

content_copy zoom_out_map
user@host> show chassis alarms
1 alarm currently active
Alarm time               Class  Description
2017-05-09 13:26:27 PDT  Major  VMHost RE 1 host application failed

If LCMD is down on the primary, then following alarms are displayed.

content_copy zoom_out_map
user@host> show chassis alarms
3 alarms currently active
Alarm time               Class  Description
2017-05-10 14:12:21 PDT  Major  VMHost RE 0 host application failed
2017-05-10 14:12:16 PDT  Minor  LCM Peer Absent
2017-05-09 13:26:27 PDT  Major  VMHost RE 1 host application failed

If the LCMD process is crashing on the primary, the system will switchover after one minute provided the backup RE LCMD connection is stable. The system will not switchover under the following conditions: if the backup RE LCMD connection is unstable or if the current primary just gained primary role. When the primary has just gained primary role, the switchover happens only after four minutes.

The LCM peer connection un-stable alarm is raised when the LCMD-CHASD IPC communication flaps three times within a small interval of two to three minutes. Once LCM peer connection un-stable alarm is raised, the connection status is monitored for two minutes.

content_copy zoom_out_map
user@host> show chassis alarms
7 alarms currently active
Alarm time               Class  Description
2017-05-29 10:12:17 PDT  Minor  LCM Peer Connection un-stable
2017-05-29 09:04:17 PDT  Minor  PEM 8 Not Powered
2017-05-29 09:04:17 PDT  Minor  PEM 9 Not Powered
2017-05-29 09:04:17 PDT  Minor  PEM 7 Not Powered
2017-05-29 09:04:17 PDT  Minor  PEM 3 Not Powered
2017-05-29 09:04:17 PDT  Minor  PEM 0 Not Powered
2017-05-29 09:04:08 PDT  Minor  Loss of communication with Backup RE

If there are no more connection flaps within this two minutes time interval, the LCM peer connection un-stable alarm is cleared.

content_copy zoom_out_map
6 alarms currently active
Alarm time               Class  Description
2017-05-29 09:04:17 PDT  Minor  PEM 8 Not Powered
2017-05-29 09:04:17 PDT  Minor  PEM 9 Not Powered
2017-05-29 09:04:17 PDT  Minor  PEM 7 Not Powered
2017-05-29 09:04:17 PDT  Minor  PEM 3 Not Powered
2017-05-29 09:04:17 PDT  Minor  PEM 0 Not Powered
2017-05-29 09:04:08 PDT  Minor  Loss of communication with Backup RE

A major alarm is raised even if there is on one PLL lock error, and this alarm can be cleared only through an FPC restart.

content_copy zoom_out_map
user@host> show chassis alarms
4 alarms currently active
Alarm time               Class  Description
2017-02-16 09:06:06 PDT  Major  FPC 0 Major Errors
2017-02-16 09:08:40 PDT  Major  FPC 1 Major Errors
2017-02-16 09:11:47 PST  Minor  Fan Tray 3 Pair 1 Outer Fan running at over speed
2017-02-16 09:11:47 PST  Minor  Fan Tray 3 Pair 1 Inner Fan running at over speed

show chassis alarms (Alarms active on a MX10008 Router)

content_copy zoom_out_map
user@host> show chassis alarms
13 alarms currently active
Alarm time               Class  Description
2018-07-17 05:48:08 PDT  Major  FPC 2 I2C Failure
2018-07-17 05:47:02 PDT  Minor  Mixed Master and Backup RE types
2018-07-17 05:47:01 PDT  Major  Fan Tray 0 Fan 5 Failed
2018-07-17 05:47:01 PDT  Major  Fan Tray 0 Fan 4 Failed
2018-07-17 05:47:01 PDT  Minor  PEM 5 Not Powered
2018-07-17 05:47:01 PDT  Minor  PEM 5 Feed 2 has no input source
2018-07-17 05:47:01 PDT  Minor  PEM 5 Feed 1 has no input source
2018-07-17 05:47:01 PDT  Minor  PEM 4 Not Powered
2018-07-17 05:47:01 PDT  Minor  PEM 4 Feed 2 has no input source
2018-07-17 05:47:01 PDT  Minor  PEM 4 Feed 1 has no input source
2018-07-17 05:47:01 PDT  Minor  PEM 3 Not Powered
2018-07-17 05:47:01 PDT  Minor  PEM 3 Feed 2 has no input source
2018-07-17 05:47:01 PDT  Minor  PEM 3 Feed 1 has no input source
2018-07-17 05:47:01 PDT  Major  CB 0 external-1 LOS

show chassis alarms (ACX Series)

content_copy zoom_out_map
user@host> show chassis alarms
Alarm time               Class  Description
2011-01-23 21:42:46 PST  Major  PTP Local Clock OOS
2011-01-23 21:42:46 PST  Major  PTP No Foreign Master
2011-01-23 21:42:46 PST  Major  Chassis Loss of all Equipment Clock Synch References
2011-01-23 21:42:46 PST  Major  Chassis Loss of Equipment Clock Synch Reference 1
2011-01-23 21:42:46 PST  Major  Chassis Loss of Equipment Clock Synch Reference 2
2011-01-23 21:42:46 PST  Major  Equipment Clock QL Below Threshold
2011-01-23 21:42:46 PST  Major  TOD Input A Signal Fail
2011-01-23 21:42:46 PST  Major  1PPS lost
2011-01-23 21:42:46 PST  Major  SyncE Port incompatible Media Type

show chassis alarms (MX10008, MX10016, PTX10008, PTX10016, QFX10008,QFX10016) (Junos OS Release)

Starting Junos OS Evolved Release 21.2R1, if PEM or FET Failure detected, a major alarm is raised, and the identified PSM will shutdown or raise alarms as per predefined configuration in the set chassis thermal-events fet-failure-check command.

For FET failure detection and action, the show chassis alarm output displays a major alarm and information if PSM is shutdown.

For example, for the show chassis configuration:

content_copy zoom_out_map
user@root> show chassis thermal-health-check 
                   { 
                      fet-failure-check; 
                      action-onfail auto-shutdown;
                   }

The output is displayed as follows:

content_copy zoom_out_map
user@root> show chassis alarms

Alarm time                Class  Description
2007-04-10 02:33:11 PDT  Minor  No Redundant Power for System
2007-04-10 02:33:08 PDT  Minor  PDU 1 PSM 4 Thermal Check brought it Down
2007-04-10 02:33:08 PDT  Major  PDU 1 PSM 4 Not OK
2007-04-10 02:33:08 PDT  Minor  PDU 0 PSM 4 Thermal Check brought it Down
2007-04-10 02:33:08 PDT  Major  PDU 0 PSM 4 Not OK
2007-04-10 02:32:03 PDT  Minor  PDU 1 PSM 3 Thermal Check brought it Down
2007-04-10 02:32:03 PDT  Major  PDU 1 PSM 3 Not OK
...
...

show chassis alarms (ACX7024)

On ACX7024 device, when edit chassis pem minimum is set to 1, The following output is displayed. The PSM absent alarm is removed only after a reboot:

content_copy zoom_out_map
user@root> show chassis alarms
4 alarms currently active
Alarm time                Class  Description
2022-05-15 09:12:31   PDT Major  No Redundant Power for System
2022-05-15 09:12:31   PDT Major  PSM 1 Input1 Failed
2022-05-15 09:12:31   PDT Major  PSM 1 Input Failed
2022-05-15 09:12:34   PDT Major PSM 0 Absent
2022-06-04 05:30:11   PDT Minor RE 0 Secure boot disabled or not enforced

When the default PSU 1+1 redundancy mode is active, the following output is displayed:

content_copy zoom_out_map
user@root> show chassis alarms
6 alarms currently active
Alarm time                Class  Description
2022-05-15 09:12:31   PDT Major  No Redundant Power for System
2022-05-15 09:12:31   PDT Major  PSM 1 Input1 Failed
2022-05-15 09:12:31   PDT Major  PSM 1 Input Failed
2022-06-04 05:30:19   PDT Major  PSM 0 Absent
2022-06-04 05:30:11   PDT Minor  RE 0 Secure boot disabled or not enforced
2022-06-04 05:31:54   PDT Major  chassis No Redundant Power

show chassis alarms (MX304 with Optic Modules)

content_copy zoom_out_map
user@host> show chassis alarms
4 alarms currently active
Alarm time               Class  Description
2024-12-13 05:51:00 UTC  Minor  FPC 0 xcvr-0/0/0 Temp Sensor Warm
2024-12-12 22:37:43 UTC  Minor  FPC 0 Optics does not support configured speed
2024-12-11 16:07:10 UTC  Major  SFB 0 I2CS CPLD image outdated
2024-12-11 16:04:52 UTC  Major  PEM 0 is Absent

show chassis alarms (PTX10008 with Optic Modules)

content_copy zoom_out_map
user@host> show chassis alarms
30 alarms currently active
Alarm time               Class  Description
2024-10-17 08:06:28 PDT  Major  FPM 0 Ideeprom read failure
2024-10-17 08:09:42 PDT  Minor  FPC 4 Secure boot disabled or not enforced
2024-10-17 17:02:56 PDT  Minor  1 VRF Scale(273) requires a license
2024-10-17 17:02:56 PDT  Minor  gre_tunnel(278) usage requires a license
2024-10-17 17:02:41 PDT  Major  xcvr-4/0/1: Optics Temperature Hot
...

Release Information

Command introduced before Junos OS Release 7.4.

satellite option introduced in Junos OS Release 14.2R3 for Junos Fusion.

Command introduced in Junos OS Release 18.2R1 for EX9253 Switches and MX10008 Universal Routing Platforms.

external-footer-nav
Ask AI
close

How can I help you today?

LLMs can make mistakes. Verify important information.
chat_add_on New topic
send progress_activity
This conversation will be monitored and recorded. Any information you provide will be subject to our Privacy Notice and may be used for quality assurance purposes. Do not include any personal or sensitive information. Ask AI can make mistakes. Verify generated output for accuracy.
Protected by hCaptcha arrow_drop_down arrow_drop_up
Juniper Networks, Inc. | Privacy Notice | Terms of Use