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man pages section 8: System Administration Commands

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Updated: Wednesday, July 27, 2022

iblinkinfo (8)


iblinkinfo - report link info for all links in the fabric


iblinkinfo <options>


IBLINKINFO(8)                 OpenIB Diagnostics                 IBLINKINFO(8)

       IBLINKINFO - report link info for all links in the fabric

       iblinkinfo <options>

       iblinkinfo  reports  link  info  for each port in an IB fabric, node by
       node.  Optionally, iblinkinfo can do partial scans and limit its output
       to parts of a fabric.

       --down, -d Print only nodes which have a port in the "Down" state.

       --line,  -l Print all information for each link on one line. Default is
       to print a header with the node information and then a  list  for  each
       port (useful for grep'ing output).

       --additional,    -p    Print    additional    port   settings   (<Life-

       --switches-only Show only switches in output.

       --cas-only Show only CAs in output.

   Partial Scan flags
       The node to start a partial scan can be specified  with  the  following

       --port-guid, -G <port_guid>  Specify a port_guid

       -D, --Direct <dr_path>     The address specified is a directed route

             -D "0"          # self port
             -D "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.)

       Note:  For  switches  results are printed for all ports not just switch
       port 0.

       --switch, -S <port_guid> same as "-G". (provided only for backward com-

       How much of the scan to be printed can be controled with the following.

       --all,  -a  Print all nodes found in a partial fabric scan.  Normally a
       partial fabric scan will return only the node specified.   This  option
       will print the other nodes found as well.

       --hops, -n <hops> Specify the number of hops away from a specified node
       to scan.  This is useful to expand a partial  fabric  scan  beyond  the
       node specified.

   Cache File flags
       --load-cache  <filename>  Load  and  use  the cached ibnetdiscover data
       stored in the specified filename.  May be  useful  for  outputting  and
       learning about other fabrics or a previous state of a fabric.

       --diff <filename> Load cached ibnetdiscover data and do a diff compari-
       son to the current network or another cache.  A special diff output for
       ibnetdiscover  output will be displayed showing differences between the
       old and current fabric.  By default, the  following  are  compared  for
       differences: switches, channel adapters, routers, and port connections.

       --diffcheck  <key(s)>  Specify  what  diff checks should be done in the
       --diff option above.  Comma separate multiple diff check  key(s).   The
       available diff checks are: sw = switches, ca = channel adapters, router
       = routers, port =  port  connections,  lid  =  lids,  nodedesc  =  node
       descriptions.   Note  that port, lid, and nodedesc are checked only for
       the node types that are specified (e.g. sw, ca, router).   If  port  is
       specified alongside lid or nodedesc, remote port lids and node descrip-
       tions will also be compared.

       --filterdownports <filename> Filter downports indicated in a  ibnetdis-
       cover  cache.  If a port was previously indicated as down in the speci-
       fied cache, and is still down, do not output it in the  resulting  out-
       put.   This  option  may  be particularly useful for environments where
       switches are not fully populated, thus much of the  default  iblinkinfo
       info  is  considered  unuseful.   See  ibnetdiscover for information on
       caching ibnetdiscover output.

   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  speci-
       fied  (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

          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: /etc/infiniband/infiniband-diags/ibdiag.conf

       --outstanding_smps, -o <val>
              Specify the number of outstanding SMP's which should  be  issued
              during the scan

              Default: 2

       --node-name-map <node-name-map> Specify a node name map.
          This  file  maps  GUIDs to more user friendly names.  See FILES sec-

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

       -h, --help      show the usage message

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

       -V, --version     show the version info.

       0 on success, -1 on failure to scan the fabric, 1 if check mode is used
       and inconsistencies are found.


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

       The  node  name map is used to specify user friendly names for nodes in
       the output.  GUIDs are used to perform the lookup.

       This  functionality  is  provided  by  the  opensm-libs  package.   See
       opensm(8) for the file location for your installation.


          # comment
          <guid> "<name>"


          # IB1
          # Line cards
          0x0008f104003f125c "IB1 (Rack 11 slot 1   ) ISR9288/ISR9096 Voltaire sLB-24D"
          0x0008f104003f125d "IB1 (Rack 11 slot 1   ) ISR9288/ISR9096 Voltaire sLB-24D"
          0x0008f104003f10d2 "IB1 (Rack 11 slot 2   ) ISR9288/ISR9096 Voltaire sLB-24D"
          0x0008f104003f10d3 "IB1 (Rack 11 slot 2   ) ISR9288/ISR9096 Voltaire sLB-24D"
          0x0008f104003f10bf "IB1 (Rack 11 slot 12  ) ISR9288/ISR9096 Voltaire sLB-24D"

          # Spines
          0x0008f10400400e2d "IB1 (Rack 11 spine 1   ) ISR9288 Voltaire sFB-12D"
          0x0008f10400400e2e "IB1 (Rack 11 spine 1   ) ISR9288 Voltaire sFB-12D"
          0x0008f10400400e2f "IB1 (Rack 11 spine 1   ) ISR9288 Voltaire sFB-12D"
          0x0008f10400400e31 "IB1 (Rack 11 spine 2   ) ISR9288 Voltaire sFB-12D"
          0x0008f10400400e32 "IB1 (Rack 11 spine 2   ) ISR9288 Voltaire sFB-12D"

          # GUID   Node Name
          0x0008f10400411a08 "SW1  (Rack  3) ISR9024 Voltaire 9024D"
          0x0008f10400411a28 "SW2  (Rack  3) ISR9024 Voltaire 9024D"
          0x0008f10400411a34 "SW3  (Rack  3) ISR9024 Voltaire 9024D"
          0x0008f104004119d0 "SW4  (Rack  3) ISR9024 Voltaire 9024D"

       Ira Weiny
              < ira.weiny@intel.com >

       See attributes(7) for descriptions of the following attributes:

       |Availability   | network/open-fabrics  |
       |Stability      | Pass-through volatile |

       Source  code  for open source software components in Oracle Solaris can
       be found at https://www.oracle.com/downloads/opensource/solaris-source-

       This     software     was    built    from    source    available    at
       https://github.com/oracle/solaris-userland.   The  original   community
       source   was   downloaded   from    ['https://www.openfabrics.org/down-
       loads/ibutils/ibutils-1.5.7-0.2.gbd7e502.tar.gz', 'https://www.openfab-
       sdp-1.1.108-0.15.gd7fdb72.tar.gz',   'https://www.openfabrics.org/down-
       loads/management/infiniband-diags-1.6.5.tar.gz',  'https://www.openfab-
       mad-',    'https://www.openfabrics.org/downloads/manage-
       ment/opensm-3.3.19.tar.gz',          'https://www.openfabrics.org/down-
       loads/perftest/perftest-1.3.0-0.42.gf350d3d.tar.gz', 'https://www.open-
       fabrics.org/downloads/qperf/qperf-0.4.9.tar.gz',  'https://www.openfab-
       rics.org/downloads/rdmacm/librdmacm-1.0.21.tar.gz',  'https://www.open-

       Further information about this software can be found on the open source
       community website at http://www.openfabrics.org/.