Provided by: freeipmi-tools_0.8.12-3ubuntu1_i386
ipmi-dcmi - IPMI DCMI utility
Ipmi-dcmi is used to execute Data Center Manageability Interface (often
referred to as DCM or DCMI) IPMI extension commands. DCMI extensions
include support for asset management and power usage management. Most
will be interested in DCMI for its power management features. By
configuring an exception action, power limit, and correction time
limit, power usage in a data center can be managed more affectively.
Please see --set-power-limit option below for more information.
The DCMI specification encompasses many traditional IPMI features that
are not implemented directly in this tool. Please see ipmiconsole(8)
for Serial-over-LAN (SOL) support, ipmi-chassis(8) for power status,
power control, identification, and ACPI power state information,
ipmipower(8) for power status and power control, ipmi-sel(8) for System
Event Log (SEL) information, bmc-info(8) for device and globally unique
ID (guid) information, ipmi-sensors(8) for sensor readings, and bmc-
config(8) for configuration.
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.
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,
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
Specify the in-band driver register spacing instead of the
Specify the remote host(s) to communicate with. Multiple
hostnames may be separated by comma or may be specified in a
range format; see HOSTRANGED SUPPORT below.
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 ADMIN privileges in order
for this tool to operate fully.
Specify the password to use when authenticationg with the remote
host. If not specified, a null password is assumed. Maximum
password length is 16 for IPMI 1.5 and 20 for IPMI 2.0.
Prompt for password to avoid possibility of listing it in
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
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
retransmission timeout cannot be larger than the session
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.
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 currently supported:
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
Specify the privilege level to be used. The currently available
privilege levels are USER, OPERATOR, and ADMIN. Defaults to
ADMIN 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. See
WORKAROUNDS below for a list of available workarounds.
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-dcmi.
Get DCMI capability information.
Get system power statistics.
Get enhanced system power statistics.
Get power limit information.
Set power limit configuration. Can specify configuration via the
--correction-time-limit, and --correction-time-limit options
listed below. If one or more options below are not specified,
current configuration will be utilized.
Specify exception actions for set power limit configuration.
Special case allowable values: HARD_POWER_OFF_SYSTEM. Other
values (e.g. 0x02 through 0x10) are OEM dependent. Used with the
Specify power limit for set power limit configuration. Input is
specified in watts. Used with the --set-power-limit option.
Specify correction time limit for set power limit configuration.
Input is specified in milliseconds. Used with the
Specify management application statistics sampling period for
set power limit configuration. Input is specified in seconds.
Used with the --set-power-limit option.
Activate or deactivate power limit. Allowed values: ACTIVATE,
Get asset tag.
Get DCMI sensor information.
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
The following options manipulate hostranged output. See HOSTRANGED
SUPPORT below for additional information on hostranges.
Buffer hostranged output. For each node, buffer standard output
until the node has completed its IPMI operation. When specifying
this option, data may appear to output slower to the user since
the the entire IPMI operation must complete before any data can
be output. See HOSTRANGED SUPPORT below for additional
Consolidate hostranged output. The complete standard output from
every node specified will be consolidated so that nodes with
identical output are not output twice. A header will list those
nodes with the consolidated output. When this option is
specified, no output can be seen until the IPMI operations to
all nodes has completed. If the user breaks out of the program
early, all currently consolidated output will be dumped. See
HOSTRANGED SUPPORT below for additional information.
Specify multiple host fanout. A "sliding window" (or fanout)
algorithm is used for parallel IPMI communication so that slower
nodes or timed out nodes will not impede parallel communication.
The maximum number of threads available at the same time is
limited by the fanout. The default is 64.
Eliminate hosts determined as undetected by ipmidetect. This
attempts to remove the common issue of hostranged execution
timing out due to several nodes being removed from service in a
large cluster. The ipmidetectd daemon must be running on the
node executing the command.
Always prefix output, even if only one host is specified or
communicating in-band. This option is primarily useful for
scripting purposes. Option will be ignored if specified with the
Multiple hosts can be input either as an explicit comma separated lists
of hosts or a range of hostnames in the general form: prefix[n-m,l-
k,...], where n < m and l < k, etc. The later form should not be
confused with regular expression character classes (also denoted by
). For example, foo does not represent foo1 or foo9, but rather
represents a degenerate range: foo19.
This range syntax is meant only as a convenience on clusters with a
prefixNN naming convention and specification of ranges should not be
considered necessary -- the list foo1,foo9 could be specified as such,
or by the range foo[1,9].
Some examples of range usage follow:
foo[01-05] instead of foo01,foo02,foo03,foo04,foo05
foo[7,9-10] instead of foo7,foo9,foo10
foo[0-3] instead of foo0,foo1,foo2,foo3
As a reminder to the reader, some shells will interpret brackets ([ and
]) for pattern matching. Depending on your shell, it may be necessary
to enclose ranged lists within quotes.
When multiple hosts are specified by the user, a thread will be
executed for each host in parallel up to the configured fanout (which
can be adjusted via the -F option). This will allow communication to
large numbers of nodes far more quickly than if done in serial.
By default, standard output from each node specified will be output
with the hostname prepended to each line. Although this output is
readable in many situations, it may be difficult to read in other
situations. For example, output from multiple nodes may be mixed
together. The -B and -C options can be used to change this default.
In-band IPMI Communication will be used when the host "localhost" is
specified. This allows the user to add the localhost into the
Most often, IPMI problems are due to configuration problems. Inband
IPMI problems are typically caused by improperly configured drivers or
non-standard BMCs. 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 privilege, 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
The following are common issues for given error messages:
"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
correctly configured on the remote BMC.
"privilege level insufficient" - An IPMI command requires a higher user
privilege than the one authenticated with. Please try to authenticate
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
"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 specified,
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 retransmission
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 try again.
"could not find inband device" - An inband device could not be found.
Please check configuration or specify specific device or driver on the
Please see WORKAROUNDS below to also if there are any vendor specific
bugs that have been discovered and worked around.
With so many different vendors implementing their own IPMI solutions,
different vendors may implement their IPMI protocols incorrectly. The
following lists the 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 option.
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.
"assumeio" - This workaround option 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.
"idzero" - This workaround option 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 option 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
hitting this issue may see "session timeout" errors. Issue observed on
Dell PowerEdge 2850,SC1425. Confirmed fixed on newer firmware.
"forcepermsg" - This workaround option 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 option 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
"authcap" - This workaround option 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.
"intel20" - This workaround option will work around several Intel IPMI
2.0 authentication issues. The issues covered include padding of
usernames, and password truncation if the authentication algorithm is
HMAC-MD5-128. Those hitting this issue may see "username invalid",
"password invalid", or "k_g invalid" errors. Issue observed on Intel
SE7520AF2 with Intel Server Management Module (Professional Edition).
"supermicro20" - This workaround option 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 option 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 option 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, and Intel S5500WBV/Penguin Relion 700. This
workaround is automatically triggered with the "sun20" workaround.
"integritycheckvalue" - This workaround option 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
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.
# ipmi-dcmi --get-power-limit
Get power limit of the local machine.
# ipmi-dcmi -h ahost -u myusername -p mypassword --get-power-limit
Get power limit of a remote machine using IPMI over LAN.
# ipmi-dcmi -h mycluster[0-127] -u myusername -p mypassword --get-
Get power limit across a cluster using IPMI over LAN.
On older operating systems, if you input your username, password, and
other potentially security relevant information on the command line,
this information may be discovered by other users when using tools like
the ps(1) command or looking in the /proc file system. It is generally
more secure to input password information with options like the -P or
-K options. Configuring security relevant information in the FreeIPMI
configuration file would also be an appropriate way to hide this
In order to prevent brute force attacks, some BMCs will temporarily
"lock up" after a number of remote authentication errors. You may need
to wait awhile in order to this temporary "lock up" to pass before you
may authenticate again.
Report bugs to <email@example.com> or <firstname.lastname@example.org>.
Copyright (C) 2009-2010 Lawrence Livermore National Security, LLC.
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 2 of the License, or (at your
option) any later version.
freeipmi(7), bmc-config(8), ipmi-chassis(8), ipmi-sel(8), ipmi-
sensors(8), ipmiconsole(8), ipmipower(8)