ibportstate(8) — Linux manual page

NAME \| SYNOPSIS \| DESCRIPTION \| OPTIONS \| FILES \| EXAMPLES \| AUTHOR \| COLOPHON

IBPORTSTATE(8)             Open IB Diagnostics             IBPORTSTATE(8)

NAME top

       IBPORTSTATE - handle port (physical) state and link speed of an
       InfiniBand port

SYNOPSIS top

       ibportstate [options] <dest dr_path|lid|guid> <portnum> [<op>]

DESCRIPTION top

       ibportstate allows the port state and port physical state of an IB
       port to be queried (in addition to link width and speed being
       validated relative to the peer port when the port queried is a
       switch port), or a switch port to be disabled, enabled, or reset.
       InfiniBand HCA port state may be changed locally without the
       knowledge of the Subnet Manager.  It also allows the link
       speed/width enabled on any IB port to be adjusted.

OPTIONS top

<op>

Supported ops: enable, disable, reset, speed, espeed,
fdr10, width, query,
on, off, down, arm, active, vls, mtu, lid, smlid,
lmc, mkey, mkeylease, mkeyprot (Default is query)

enable, disable, and reset change or reset a switch or HCA
port state (You must specify the CA name and Port number
when locally change CA port state.)

off change the port state to disable.

on change the port state to enable(only when the current
state is disable).

speed and width are allowed on any port

speed values are the legal values for
PortInfo:LinkSpeedEnabled (An error is indicated if
PortInfo:LinkSpeedSupported does not support this setting)

espeed is allowed on any port supporting extended link
speeds

fdr10 is allowed on any port supporting fdr10 (An error is
indicated if port's capability mask indicates extended link
speeds are not supported or if
PortInfo:LinkSpeedExtSupported does not support this
setting)

width values are legal values for PortInfo:LinkWidthEnabled
(An error is indicated if PortInfo:LinkWidthSupported does
not support this setting) (NOTE: Speed and width changes
are not effected until the port goes through link
renegotiation)

query also validates port characteristics (link width,
speed, espeed, and fdr10) based on the peer port. This
checking is done when the port queried is a switch port as
it relies on combined routing (an initial LID route with
directed routing to the peer) which can only be done on a
switch. This peer port validation feature of query op
requires LID routing to be functioning in the subnet.

mkey, mkeylease, and mkeyprot are only allowed on CAs,
routers, or switch port 0 (An error is generated if
attempted on external switch ports). Hexadecimal and octal
mkeys may be specified by prepending the key with '0x' or
'0', respectively. If a non-numeric value (like 'x') is
specified for the mkey, then ibportstate will prompt for a
value.

Addressing Flags
-L, --Lid The address specified is a LID

-G, --Guid The address specified is a Port GUID

-D, --Direct The address specified is a directed route

Examples:
[options] -D [options] "0" # self port
[options] -D [options] "0,1,2,1,4" # out via port 1, then 2, ...

(Note the second number in the path specified must match the port being
used. This can be specified using the port selection flag '-P' or the
port found through the automatic selection process.)

-s, --sm_port <smlid> use 'smlid' as the target lid for SA
queries.

Port Selection flags
-C, --Ca <ca_name> use the specified ca_name.

-P, --Port <ca_port> use the specified ca_port.

Local port Selection
Multiple port/Multiple CA support: when no IB device or port is
specified (see the "local umad parameters" below), the libibumad
library selects the port to use by the following criteria:

1. the first port that is ACTIVE.

2. if not found, the first port that is UP (physical link up).

If a port and/or CA name is specified, the libibumad library
attempts to fulfill the user request, and will fail if it is
not possible.

For example:

ibaddr # use the first port (criteria #1 above)
ibaddr -C mthca1 # pick the best port from "mthca1" only.
ibaddr -P 2 # use the second (active/up) port from the first available IB device.
ibaddr -C mthca0 -P 2 # use the specified port only.

Configuration flags
--config, -z <config_file> Specify alternate config file.
Default:
/ssd11/FOSS/rdma-core/build/etc/infiniband-diags/ibdiag.conf

-t, --timeout <timeout_ms> override the default timeout for the
solicited mads.

-y, --m_key <key>
use the specified M_key for requests. If non-numeric value
(like 'x') is specified then a value will be prompted for.

Debugging flags
-h, --help show the usage message

-d raise the IB debugging level. May be used several times
(-ddd or -d -d -d).

-e show send and receive errors (timeouts and others)

-K, --show_keys
show security keys (mkey, smkey, etc.) associated with the
request.

-v, --verbose
increase the application verbosity level. May be used
several times (-vv or -v -v -v)

-V, --version show the version info.

FILES top

   CONFIG FILE
       /ssd11/FOSS/rdma-core/build/etc/infiniband-diags/ibdiag.conf

       A global config file is provided to set some of the common options
       for all tools.  See supplied config file for details.

EXAMPLES top

          ibportstate -C qib0 -P 1 3 1 disable     # by CA name, CA Port Number, lid, physical port number
          ibportstate -C qib0 -P 1 3 1 enable      # by CA name, CA Port Number, lid, physical port number
          ibportstate -D 0 1                       # (query) by direct route
          ibportstate 3 1 reset                    # by lid
          ibportstate 3 1 speed 1                  # by lid
          ibportstate 3 1 width 1                  # by lid
          ibportstate -D 0 1 lid 0x1234 arm        # by direct route

AUTHOR top

       Hal Rosenstock
              <  <hal.rosenstock@gmail.com>  >

COLOPHON top

       This page is part of the rdma-core (RDMA Core Userspace Libraries
       and Daemons) project.  Information about the project can be found
       at ⟨https://github.com/linux-rdma/rdma-core⟩.  If you have a bug
       report for this manual page, send it to
       linux-rdma@vger.kernel.org.  This page was obtained from the
       project's upstream Git repository
       ⟨https://github.com/linux-rdma/rdma-core.git⟩ on 2025-08-11.  (At
       that time, the date of the most recent commit that was found in
       the repository was 2025-08-04.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there is
       a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to
       man-pages@man7.org

                                2013-03-26                 IBPORTSTATE(8)