# iblinkinfo

## 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 controlled 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: **port** = port connections,
           **state** = port state, **lid** = lids, **nodedesc** = node descriptions.
           Note that **port** , **lid** , and **nodedesc** are checked only for the node
           types that are specified (e.g.  **switches-only** , **cas-only**).  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 useless.  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:
              /ssd11/FOSS/rdma-core/build/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.
    


## 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**
           /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.
    
       **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"
    


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