IPMI-PET(8) System Commands IPMI-PET(8)
IPMI - IPMI Platform Event Trap Interpreter
ipmi-pet [OPTION...] [SPECIFIC TRAP] [VARIABLE BINDING HEX BYTES ...]
Ipmi-pet interprets hex bytes from a platform event trap (PET) and outputs a string representing its contents. Hex values may be input on
the command line, a file via the --file option, or via stdin if neither of the previous are specified. Ipmi-pet is commonly used in con-
junction with an SNMP trap daemon to intrepret the results from an IPMI PET trap captured by the daemon. While ipmi-pet could be called
directly from such a daemon, typically a script is called to parse the SNMP daemon's output and convert it into a form that can be input
into ipmi-pet. On some systems, you may wish to also send a PET acknowledge to a remote system to inform it the trap was received and
parsed. One can be sent using the --pet-acknowledge option. While an IPMI session is not required to interpret a PET, data from the sensor
data repository (SDR) is required to properly interpret sensor names and other information in the PET. IPMI session configuration below,
such as driver, hostname, username, etc. should be configured to load the SDR of the host where the trap originated. If this is difficult
to perform, it may be wise to cache and load a specific SDR cache using the --sdr-cache-file option. If the SDR is difficult to obtain,
the --ignore-sdr-cache option can be specified so that an SDR will not be loaded, and an IPMI session will not be required. The PET will be
interpreted as best as possible given no SDR. The --ignore-sdr-cache option may affect other options such as --interpret-oem-data too. Some
options, such as --manufacturer-id and --product-id may alleviate some of these issues. If the SNMP daemon does not output a SNMPv1 spe-
cific trap on its own, it is typically output as the last element of the OID in SNMPv2. If for some reason a specific trap cannot be
determined, the value of NA may be input for the specific trap to indicate it is not available. Ipmi-pet will output as much as possible
based on the variable bindings information. Some of the specific trap information may be obtained via SDR information.
Listed below are general IPMI options, tool specific options, trouble shooting information, workaround information, examples, and known
issues. For a general introduction to FreeIPMI please see freeipmi(7).
The following options are general options for configuring IPMI communication and executing general tool commands.
-D IPMIDRIVER, --driver-type=IPMIDRIVER
Specify the driver type to use instead of doing an auto selection. The currently available outofband drivers are LAN and LAN_2_0,
which perform IPMI 1.5 and IPMI 2.0 respectively. The currently available inband drivers are KCS, SSIF, OPENIPMI, and SUNBMC.
Do not probe in-band IPMI devices for default settings.
Specify the in-band driver address to be used instead of the probed value. DRIVER-ADDRESS should be prefixed with "0x" for a hex
value and '0' for an octal value.
Specify the in-band driver device path to be used instead of the probed path.
Specify the in-band driver register spacing instead of the probed value. Argument is in bytes (i.e. 32bit register spacing = 4)
-h IPMIHOST, --hostname=IPMIHOST
Specify the remote host to communicate with.
-u USERNAME, --username=USERNAME
Specify the username to use when authenticating with the remote host. If not specified, a null (i.e. anonymous) username is
assumed. The user must have atleast OPERATOR privileges in order for this tool to operate fully.
-p PASSWORD, --password=PASSWORD
Specify the password to use when authenticationg with the remote host. If not specified, a null password is assumed. Maximum pass-
word length is 16 for IPMI 1.5 and 20 for IPMI 2.0.
Prompt for password to avoid possibility of listing it in process lists.
-k K_G, --k-g=K_G
Specify the K_g BMC key to use when authenticating with the remote host for IPMI 2.0. If not specified, a null key is assumed. To
input the key in hexadecimal form, prefix the string with '0x'. E.g., the key 'abc' can be entered with the either the string 'abc'
or the string '0x616263'
Prompt for k-g to avoid possibility of listing it in process lists.
Specify the session timeout in milliseconds. Defaults to 20000 milliseconds (20 seconds) if not specified.
Specify the packet retransmission timeout in milliseconds. Defaults to 1000 milliseconds (1 second) if not specified. The retrans-
mission timeout cannot be larger than the session timeout.
-a AUTHENTICATION-TYPE, --authentication-type=AUTHENTICATION-TYPE
Specify the IPMI 1.5 authentication type to use. The currently available authentication types are NONE, STRAIGHT_PASSWORD_KEY, MD2,
and MD5. Defaults to MD5 if not specified.
-I CIPHER-SUITE-ID, --cipher-suite-id=CIPHER-SUITE-ID
Specify the IPMI 2.0 cipher suite ID to use. The Cipher Suite ID identifies a set of authentication, integrity, and confidentiality
algorithms to use for IPMI 2.0 communication. The authentication algorithm identifies the algorithm to use for session setup, the
integrity algorithm identifies the algorithm to use for session packet signatures, and the confidentiality algorithm identifies the
algorithm to use for payload encryption. Defaults to cipher suite ID 3 if not specified. The following cipher suite ids are cur-
0 - Authentication Algorithm = None; Integrity Algorithm = None; Confidentiality Algorithm = None
1 - Authentication Algorithm = HMAC-SHA1; Integrity Algorithm = None; Confidentiality Algorithm = None
2 - Authentication Algorithm = HMAC-SHA1; Integrity Algorithm = HMAC-SHA1-96; Confidentiality Algorithm = None
3 - Authentication Algorithm = HMAC-SHA1; Integrity Algorithm = HMAC-SHA1-96; Confidentiality Algorithm = AES-CBC-128
6 - Authentication Algorithm = HMAC-MD5; Integrity Algorithm = None; Confidentiality Algorithm = None
7 - Authentication Algorithm = HMAC-MD5; Integrity Algorithm = HMAC-MD5-128; Confidentiality Algorithm = None
8 - Authentication Algorithm = HMAC-MD5; Integrity Algorithm = HMAC-MD5-128; Confidentiality Algorithm = AES-CBC-128
11 - Authentication Algorithm = HMAC-MD5; Integrity Algorithm = MD5-128; Confidentiality Algorithm = None
12 - Authentication Algorithm = HMAC-MD5; Integrity Algorithm = MD5-128; Confidentiality Algorithm = AES-CBC-128
17 - Authentication Algorithm = HMAC-SHA256; Integrity Algorithm = HMAC_SHA256_128; Confidentiality Algorithm = AES-CBC-128
-l PRIVILEGE-LEVEL, --privilege-level=PRIVILEGE-LEVEL
Specify the privilege level to be used. The currently available privilege levels are USER, OPERATOR, and ADMIN. Defaults to OPERATOR
if not specified.
Specify an alternate configuration file.
-W WORKAROUNDS, --workaround-flags=WORKAROUNDS
Specify workarounds to vendor compliance issues. Multiple workarounds can be specified separated by commas. A special command line
flag of "none", will indicate no workarounds (may be useful for overriding configured defaults). See WORKAROUNDS below for a list of
Turn on debugging.
Output a help list and exit.
Output a usage message and exit.
Output the program version and exit.
The following options are specific to Ipmi-pet.
-v Output verbose output. This option will output event direction and OEM custom messages from the trap.
-vv Output very verbose output. This option will output additional information available in the trap, such as GUID, manufacturer ID, and
-vvv Output very very verbose output. This option will output additional information than verbose output. Most notably it will output
additional hex codes to given information on ambiguous events. For example, it will output Generator ID hex codes for sensors with-
Send PET acknowledge using inputted trap data instead of outputting data. In some circumstances, this may be useful to inform a
remote system that a trap was received and parsed. If specified, a hostname must be specified via -h or --hostname to inform ipmi-
pet where to send the acknowledge to. When this option is specified, the SDR cache is not loaded and is not required.
Specify a file to read PET specific trap and variable bindings hex from instead of command line.
Output event severity in output. This will add an additional output of an event severity. The outputs may be Monitor, Information,
OK, Non-critical condition, Critical condition, or Non-recoverable condition. This differs from the output of --output-event-state,
as event severity is not interpreted, it is a value reported in the SNMP trap. However, not all events may report a severity, or
some manufacturers may not support the report of a severity. Event severity will automatically be output under verbose output.
Output event state in output. This will add an additional output reporting if an event should be viewed as NOMINAL, WARNING, or
CRITICAL. This differs from the output of --output-event-severity, as this output is an interpreted value that will be interpreted
identically to the --output-event-state output in ipmi-sel(8). As long as an event interpretation is supported, all events will
have outputted state. The event state is an interpreted value based on the configuration file /etc/freeipmi//freeipmi_inter-
pret_sel.conf and the event direction. See freeipmi_interpret_sel.conf(5) for more information.
Specify an alternate event state configuration file. Option ignored if --output-event-state not specified.
Specify a specific manufacturer id to assume. Useful if you wish to specify --interpret-oem-data, but the manufacturer id cannot be
determined by IPMI access or is not available in the SNMP trap. The manufacturer id of a motherboard can be determined with bmc-
info(8). If this option is specified, so must --product-id.
Specify a specific product id to assume. Useful if you wish to specify --interpret-oem-data, but the product id cannot be determined
by IPMI access or is not available in the SNMP trap. The product id of a motherboard can be determined with bmc-info(8). If this
option is specified, so must --manufacturer-id.
Attempt to interpret OEM data, such as event data, sensor readings, or general extra info, etc. If an OEM interpretation is not
available, the default output will be generated. Correctness of OEM interpretations cannot be guaranteed due to potential changes
OEM vendors may make in products, firmware, etc. See OEM INTERPRETATION below for confirmed supported motherboard interpretations.
Output sensor names prefixed with their entity id and instance number when appropriate. This may be necessary on some motherboards
to help identify what sensors are referencing. For example, a motherboard may have multiple sensors named 'TEMP'. The entity id and
instance number may help clarify which sensor refers to "Processor 1" vs. "Processor 2".
Do not show sensor type output for each entry. On many systems, the sensor type is redundant to the name of the sensor. This can
especially be true if --entity-sensor-names is specified. If the sensor name is sufficient, or if the sensor type is of no interest
to the user, this option can be specified to condense output.
Output fields in comma separated format.
Do not output column headers. May be useful in scripting.
Output non-abbreviated units (e.g. 'Amps' instead of 'A'). May aid in disambiguation of units (e.g. 'C' for Celsius or Coulombs).
SDR CACHE OPTIONS
This tool requires access to the sensor data repository (SDR) cache for general operation. By default, SDR data will be downloaded and
cached on the local machine. The following options apply to the SDR cache.
Flush a cached version of the sensor data repository (SDR) cache. The SDR is typically cached for faster subsequent access. However,
it may need to be flushed and re-generated if the SDR has been updated on a system.
Do not output information about cache creation/deletion. May be useful in scripting.
Specify an alternate directory for sensor data repository (SDR) caches to be stored or read from. Defaults to the home directory if
Specify a specific sensor data repository (SDR) cache file to be stored or read from.
If the SDR cache is out of date or invalid, automatically recreate the sensor data repository (SDR) cache. This option may be useful
for scripting purposes.
Ignore SDR cache related processing. May lead to incomplete or less useful information being output, however it will allow function-
ality for systems without SDRs or when the correct SDR cannot be loaded.
Most often, IPMI problems are due to configuration problems.
IPMI over LAN problems involve a misconfiguration of the remote machine's BMC. Double check to make sure the following are configured
properly in the remote machine's BMC: IP address, MAC address, subnet mask, username, user enablement, user privilege, password, LAN privi-
lege, LAN enablement, and allowed authentication type(s). For IPMI 2.0 connections, double check to make sure the cipher suite privilege(s)
and K_g key are configured properly. The bmc-config(8) tool can be used to check and/or change these configuration settings.
Inband IPMI problems are typically caused by improperly configured drivers or non-standard BMCs.
In addition to the troubleshooting tips below, please see WORKAROUNDS below to also if there are any vendor specific bugs that have been
discovered and worked around.
Listed below are many of the common issues for error messages. For additional support, please e-mail the <firstname.lastname@example.org> mailing
"username invalid" - The username entered (or a NULL username if none was entered) is not available on the remote machine. It may also be
possible the remote BMC's username configuration is incorrect.
"password invalid" - The password entered (or a NULL password if none was entered) is not correct. It may also be possible the password for
the user is not correctly configured on the remote BMC.
"password verification timeout" - Password verification has timed out. A "password invalid" error (described above) or a generic "session
timeout" (described below) occurred. During this point in the protocol it cannot be differentiated which occurred.
"k_g invalid" - The K_g key entered (or a NULL K_g key if none was entered) is not correct. It may also be possible the K_g key is not cor-
rectly configured on the remote BMC.
"privilege level insufficient" - An IPMI command requires a higher user privilege than the one authenticated with. Please try to authenti-
cate with a higher privilege. This may require authenticating to a different user which has a higher maximum privilege.
"privilege level cannot be obtained for this user" - The privilege level you are attempting to authenticate with is higher than the maximum
allowed for this user. Please try again with a lower privilege. It may also be possible the maximum privilege level allowed for a user is
not configured properly on the remote BMC.
"authentication type unavailable for attempted privilege level" - The authentication type you wish to authenticate with is not available
for this privilege level. Please try again with an alternate authentication type or alternate privilege level. It may also be possible the
available authentication types you can authenticate with are not correctly configured on the remote BMC.
"cipher suite id unavailable" - The cipher suite id you wish to authenticate with is not available on the remote BMC. Please try again with
an alternate cipher suite id. It may also be possible the available cipher suite ids are not correctly configured on the remote BMC.
"ipmi 2.0 unavailable" - IPMI 2.0 was not discovered on the remote machine. Please try to use IPMI 1.5 instead.
"connection timeout" - Initial IPMI communication failed. A number of potential errors are possible, including an invalid hostname speci-
fied, an IPMI IP address cannot be resolved, IPMI is not enabled on the remote server, the network connection is bad, etc. Please verify
configuration and connectivity.
"session timeout" - The IPMI session has timed out. Please reconnect. If this error occurs often, you may wish to increase the retransmis-
sion timeout. Some remote BMCs are considerably slower than others.
"device not found" - The specified device could not be found. Please check configuration or inputs and try again.
"driver timeout" - Communication with the driver or device has timed out. Please try again.
"message timeout" - Communication with the driver or device has timed out. Please try again.
"BMC busy" - The BMC is currently busy. It may be processing information or have too many simultaneous sessions to manage. Please wait and
"could not find inband device" - An inband device could not be found. Please check configuration or specify specific device or driver on
the command line.
"driver timeout" - The inband driver has timed out communicating to the local BMC or service processor. The BMC or service processor may be
busy or (worst case) possibly non-functioning.
With so many different vendors implementing their own IPMI solutions, different vendors may implement their IPMI protocols incorrectly. The
following describes a number of workarounds currently available to handle discovered compliance issues. When possible, workarounds have
been implemented so they will be transparent to the user. However, some will require the user to specify a workaround be used via the -W
The hardware listed below may only indicate the hardware that a problem was discovered on. Newer versions of hardware may fix the problems
indicated below. Similar machines from vendors may or may not exhibit the same problems. Different vendors may license their firmware from
the same IPMI firmware developer, so it may be worthwhile to try workarounds listed below even if your motherboard is not listed.
If you believe your hardware has an additional compliance issue that needs a workaround to be implemented, please contact the FreeIPMI
maintainers on <email@example.com> or <firstname.lastname@example.org>.
assumeio - This workaround flag will assume inband interfaces communicate with system I/O rather than being memory-mapped. This will work
around systems that report invalid base addresses. Those hitting this issue may see "device not supported" or "could not find inband
device" errors. Issue observed on HP ProLiant DL145 G1.
spinpoll - This workaround flag will inform some inband drivers (most notably the KCS driver) to spin while polling rather than putting the
process to sleep. This may significantly improve the wall clock running time of tools because an operating system scheduler's granularity
may be much larger than the time it takes to perform a single IPMI message transaction. However, by spinning, your system may be performing
less useful work by not contexting out the tool for a more useful task.
authcap - This workaround flag will skip early checks for username capabilities, authentication capabilities, and K_g support and allow
IPMI authentication to succeed. It works around multiple issues in which the remote system does not properly report username capabilities,
authentication capabilities, or K_g status. Those hitting this issue may see "username invalid", "authentication type unavailable for
attempted privilege level", or "k_g invalid" errors. Issue observed on Asus P5M2/P5MT-R/RS162-E4/RX4, Intel SR1520ML/X38ML, and Sun Fire
2200/4150/4450 with ELOM.
idzero - This workaround flag will allow empty session IDs to be accepted by the client. It works around IPMI sessions that report empty
session IDs to the client. Those hitting this issue may see "session timeout" errors. Issue observed on Tyan S2882 with M3289 BMC.
unexpectedauth - This workaround flag will allow unexpected non-null authcodes to be checked as though they were expected. It works around
an issue when packets contain non-null authentication data when they should be null due to disabled per-message authentication. Those hit-
ting this issue may see "session timeout" errors. Issue observed on Dell PowerEdge 2850,SC1425. Confirmed fixed on newer firmware.
forcepermsg - This workaround flag will force per-message authentication to be used no matter what is advertised by the remote system. It
works around an issue when per-message authentication is advertised as disabled on the remote system, but it is actually required for the
protocol. Those hitting this issue may see "session timeout" errors. Issue observed on IBM eServer 325.
endianseq - This workaround flag will flip the endian of the session sequence numbers to allow the session to continue properly. It works
around IPMI 1.5 session sequence numbers that are the wrong endian. Those hitting this issue may see "session timeout" errors. Issue
observed on some Sun ILOM 1.0/2.0 (depends on service processor endian).
intel20 - This workaround flag will work around several Intel IPMI 2.0 authentication issues. The issues covered include padding of user-
names, and password truncation if the authentication algorithm is HMAC-MD5-128. Those hitting this issue may see "username invalid", "pass-
word invalid", or "k_g invalid" errors. Issue observed on Intel SE7520AF2 with Intel Server Management Module (Professional Edition).
supermicro20 - This workaround flag will work around several Supermicro IPMI 2.0 authentication issues on motherboards w/ Peppercon IPMI
firmware. The issues covered include handling invalid length authentication codes. Those hitting this issue may see "password invalid"
errors. Issue observed on Supermicro H8QME with SIMSO daughter card. Confirmed fixed on newerver firmware.
sun20 - This workaround flag will work work around several Sun IPMI 2.0 authentication issues. The issues covered include invalid lengthed
hash keys, improperly hashed keys, and invalid cipher suite records. Those hitting this issue may see "password invalid" or "bmc error"
errors. Issue observed on Sun Fire 4100/4200/4500 with ILOM. This workaround automatically includes the "opensesspriv" workaround.
opensesspriv - This workaround flag will slightly alter FreeIPMI's IPMI 2.0 connection protocol to workaround an invalid hashing algorithm
used by the remote system. The privilege level sent during the Open Session stage of an IPMI 2.0 connection is used for hashing keys
instead of the privilege level sent during the RAKP1 connection stage. Those hitting this issue may see "password invalid", "k_g invalid",
or "bad rmcpplus status code" errors. Issue observed on Sun Fire 4100/4200/4500 with ILOM, Inventec 5441/Dell Xanadu II, Supermicro X8DTH,
Supermicro X8DTG, Intel S5500WBV/Penguin Relion 700, Intel S2600JF/Appro 512X, and Quanta QSSC-S4R//Appro GB812X-CN. This workaround is
automatically triggered with the "sun20" workaround.
integritycheckvalue - This workaround flag will work around an invalid integrity check value during an IPMI 2.0 session establishment when
using Cipher Suite ID 0. The integrity check value should be 0 length, however the remote motherboard responds with a non-empty field.
Those hitting this issue may see "k_g invalid" errors. Issue observed on Supermicro X8DTG, Supermicro X8DTU, and Intel S5500WBV/Penguin
Relion 700, and Intel S2600JF/Appro 512X.
malformedack - This workaround flag will ignore malformed PET acknowledge responses and assume any PET acknowledge response from the remote
machine is valid. It works around remote systems that respond with PET acknowledge requests with invalid/malformed IPMI payloads. Those
hitting this issue may see "session timeout" errors when executing a PET acknowledge. Issue observed on Dell Poweredge R610.
No IPMI 1.5 Support - Some motherboards that support IPMI 2.0 have been found to not support IPMI 1.5. Those hitting this issue may see
"ipmi 2.0 unavailable" or "connection timeout" errors. This issue can be worked around by using IPMI 2.0 instead of IPMI 1.5 by specifying
--driver-address=LAN_2_0. Issue observed on HP Proliant DL 145.
The following motherboards are confirmed to have atleast some support by the --interpret-oem-data option. While highly probable the OEM
data interpretations would work across other motherboards by the same manufacturer, there are no guarantees. Some of the motherboards below
may be rebranded by vendors/distributors.
Interpret a PET using the local SDR cache.
# ipmi-pet 356224 0x44 0x45 0x4c 0x4c 0x50 0x00 0x10 0x59 0x80 0x43 0xb2 0xc0 0x4f 0x33 0x33 0x58 0x00 0x02 0x19 0xe8 0x7e 0x26 0xff 0xff
0x20 0x20 0x04 0x20 0x73 0x18 0x00 0x80 0x01 0xff 0x00 0x00 0x00 0x00 0x00 0x19 0x00 0x00 0x02 0xa2 0x01 0x00 0xc1
Interpret a PET using a remote SDR cache.
# ipmi-pet -h ahost -u myusername -p mypassword 356224 0x44 0x45 0x4c 0x4c 0x50 0x00 0x10 0x59 0x80 0x43 0xb2 0xc0 0x4f 0x33 0x33 0x58 0x00
0x02 0x19 0xe8 0x7e 0x26 0xff 0xff 0x20 0x20 0x04 0x20 0x73 0x18 0x00 0x80 0x01 0xff 0x00 0x00 0x00 0x00 0x00 0x19 0x00 0x00 0x02 0xa2 0x01
Interpret a PET using a previously stored SDR cache.
# ipmi-pet 356224 0x44 0x45 0x4c 0x4c 0x50 0x00 0x10 0x59 0x80 0x43 0xb2 0xc0 0x4f 0x33 0x33 0x58 0x00 0x02 0x19 0xe8 0x7e 0x26 0xff 0xff
0x20 0x20 0x04 0x20 0x73 0x18 0x00 0x80 0x01 0xff 0x00 0x00 0x00 0x00 0x00 0x19 0x00 0x00 0x02 0xa2 0x01 0x00 0xc1 --sdr-cache-
Instead of outputting trap interpretation, send a PET acknowledge using the trap data.
# ipmi-pet -h ahost --pet-acknowledge 356224 0x44 0x45 0x4c 0x4c 0x50 0x00 0x10 0x59 0x80 0x43 0xb2 0xc0 0x4f 0x33 0x33 0x58 0x00 0x02 0x19
0xe8 0x7e 0x26 0xff 0xff 0x20 0x20 0x04 0x20 0x73 0x18 0x00 0x80 0x01 0xff 0x00 0x00 0x00 0x00 0x00 0x19 0x00 0x00 0x02 0xa2 0x01 0x00 0xc1
Report bugs to <email@example.com> or <firstname.lastname@example.org>.
Copyright (C) 2011-2012 FreeIPMI Core Team
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or (at your option) any later version.
freeipmi(7), bmc-info(8), ipmi-pef-config(8), ipmi-sel(8), freeipmi_interpret_sel.conf(5)
IPMI-PET version 1.1.5 2012-06-15 IPMI-PET(8)