NAME

       IBLINKINFO - report link info for all links in the fabric

SYNOPSIS

       iblinkinfo <options>

DESCRIPTION

       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.

OPTIONS

       --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 (<LifeTime>,<HoqLife>,<VLStallCount>)

       --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 addresses.

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

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

       Examples:
          -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 compatibility)

       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 comparison 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 descriptions will also be compared.

       --filterdownports  <filename>  Filter  downports indicated in a ibnetdiscover cache.  If a
       port was previously indicated as down in the specified cache, and is still  down,  do  not
       output  it  in  the  resulting  output.   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 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: /etc/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 section.

       -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.

       -R (This option is obsolete and does nothing)

EXIT STATUS

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

FILES

   CONFIG FILE
       /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.

   NODE NAME MAP FILE FORMAT
       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.

       Generically:

       # comment
       <guid> "<name>"

       Example:

       # 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"

AUTHOR

       Ira Weiny
              < weiny2@llnl.gov >

                                                                                    IBLINKINFO(8)