Description

When POE (power over ethernet) stops working on a device, multiple error logs are seen with status codes at the end.

Symptoms

When POE fails or has an issue on a device, status code messages are generated in log/messages: 

Apr  6 15:40:58  sw1 chassisd[10913]: PoE port name ge-0/0/0 status 38
Apr  6 15:40:59  sw1 chassisd[10913]: PoE port name ge-0/0/1 status 27
Apr  6 15:40:59  sw1 chassisd[10913]: PoE port name ge-0/0/2 status 38
Apr  6 15:40:59  sw1 chassisd[10913]: PoE port name ge-0/0/3 status 27
Apr  6 15:40:59  sw1 chassisd[10913]: PoE port name ge-0/0/4 status 27
Apr  6 15:40:59  sw1 chassisd[10913]: PoE port name ge-0/0/5 status 38
Apr  6 15:40:59  sw1 chassisd[10913]: PoE port name ge-0/0/6 status 38
Apr  6 15:40:59  sw1 chassisd[10913]: PoE port name ge-0/0/7 status 27
Apr  6 15:40:59  sw1 chassisd[10913]: PoE port name ge-0/0/8 status 27
Apr  6 15:40:59  sw1 chassisd[10913]: PoE port name ge-0/0/9 status 27
Apr  6 15:40:59  sw1 chassisd[10913]: PoE port name ge-0/0/10 status 38
Apr  6 15:40:59  sw1 chassisd[10913]: PoE port name ge-0/0/11 status 36

These messages may be present with or without impact to service. 

Solution

POE involves many electrical issues such as voltage injection, etc. POE uses these status code messages to indicate what the issue is. 

For example, status 36 code messages arrive when there is a voltage injection on a device. A non-working port is denoted by status code 38, and so on.

Understanding the meaning of each status code helps in troubleshooting.

Hex Dec Status Comment
0x00 0 Port is on: Valid capacitor detected Legacy PD was detected.
0x01 1 Port is on: Valid resistor detected 802.3af-compliant PD was detected.
0x02 2 Port is on 4pair 802.3af/at-compliant PD is powered on 4 pair lines.
0x06 6 Port is off: Main supply voltage is high Mains voltage is higher than Max Voltage limit
0x07 7 Port is off: Main supply voltage is low Mains voltage is lower than Min Voltage limit
0x08 8 Port is off: ‘Disable all ports’ pin is active Hardware pin disables all ports.
0x0C 12 Port is off Non-existing port number Fewer ports are available than the maximum number of ports that the Controller can support. Unavailable ports are considered ‘off’.
0x11 17 Port is yet undefined Getting this status means a software problem.
0x12 18 Port is off: Internal hardware fault Port does not respond, hardware fault, or system initialization.
0x1A 26 Port is off: User setting User command set port to off.
0x1B 27 Port is off: Detection is in process Interim state during line detection. The status will change after the detection process is completed.
0x1C 28 Port is off: Non-802.3af powered device Non-standard PD connected.
0x1D 29 Port is off: Overload & Underload states Succession of Underload and Overload states caused the port shutdown. Maybe also caused by a PD’s DC/DC fault.
0x1E 30 Port is off: Underload state Underload state according to 802.3af (current is below Imin).
0x1F 31 Port is off: Overload state Overload state according to 802.3af (current is above Icut)
0x20 32 Port is off: Power budget exceeded Power Management function shuts down port, due to lack of power. Port is shut down or remains off.
0x21 33 Port is off: Internal hardware fault Hardware problems preventing port operation.
0x24 36 Port is off: Voltage injection into the port Port fails Capacitor Detection due to voltage being applied to the port from external source (in Capacitor Detection mode).
0x25 37 Port is off: Improper Capacitor Detection results Fail due to out-of-range capacitor value.
0x26 38 Port is off: Discharged load Port fails Capacitor Detection due to discharged capacitor.
0x2B 43 Port is on: Detection regardless (Force On) Port is forced to turn on, unless system error occurs.
0x2C 44 Undefined error during Force On Reserved for future use.
0x2D 45 Supply voltage higher than settings These errors appear only after port is in Force On.
0x2E 46 Supply voltage lower than settings These errors appear only after port is in Force On
0x2F 47 Disable_PDU flag raised during Force On These errors appear only after port is in Force On
0x30 48 Port is forced on, then disabled Disabling is performed by the “Set Enable/Disable” command.
0x31 49 Port is off: Forced power error due to Overload Overload condition according to 802.3af during Force On.
0x32 50 Port is off: “Out of power budget” during Force On The port is not ON in spite of Force On activation since the maximal power level has been crossed or there is not sufficient
0x33 51 Communication error with PoE devices after Force On This error appears only after port is forced on.
0x34 52 Port is off: Short condition Short condition was detected.
0x35 53 Port is off: Over temperature at the port. Port temperature protection mechanism was activated
0x36 54 Port is off: Device is too hot. The die temperature is above safe operating value.
0x37 55 Unknown device port status The device returns an unknown port status for the software.
0x38 56 Force Power Error Short Circuit Short condition during Force On
0x39 57 Force Power Error Channel Over Temperature Channel over temperature during Force On
0x3A 58 Force Power Error Chip Over Temperature Device over temperature during Force On
0x3C 60 Power Management-Static Calculated power > power limit
0x3D 61 Power Management-Static -ovl PD class report > user predefined power value
0x3E 62 Force Power Error Management Static Calculated power > power limit during Force On
0x3F 63 Force Power Error Management Static -ovl PD class report > user predefined power value during Force On
0x40 64 High power port is ON High power device was detected
0x41 65 Chip Over Power Sum of square currents exceeded SumPowerLimit
0x42 66 Force Power Error Chip Over Power Same as previous line, during Force On
0x43 67 Port is off: Class Error Illegal class

Modification History

2023-09-28 - no changes to the content of the article; minor system change
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