Discover the InfiniBand Fabric Topology

The ibnetdiscover command enables you to see the InfiniBand fabric topology, and build a topology file which is used by the OpenSM Subnet Manager.

1. Identify the prerequisite and subsequent tasks you must perform in conjunction with this procedure, to install the switch.

   See the table in Installation Sequence.

2. On the Linux InfiniBand host, type:

   # ibnetdiscover
   #
   # Topology file: generated on Thu Oct 29 16:49:36 2009
   #
   # Initiated from node 0003ba000100c708 port 0003ba000100c70a
   vendid=0x2c9
   devid=0xbd36
   sysimgguid=0x3ba2550282543
   switchguid=0x21283a83ae11d2(21283a83ae11d2)
   Switch  36 "S-0021283a83ae11d2" # "Sun DCS 648 shmm1500 LC slot 1 switch 3" base port 0 lid 35 lmc 0
    [1]     "S-00bad0fc0100f8a2"[19] # "Sun DCS 648 shmm1500 FC slot 8 switch 0" lid 56 4xQDR
    [2]     "S-00bad0fc0100f8b2"[36] # "Sun DCS 648 shmm1500 FC slot 8 switch 1" lid 57 4xQDR
    [3]     "S-0021283a77bdf7a2"[19] # "Sun DCS 648 shmm1500 FC slot 7 switch 0" lid 54 4xQDR
   .
   .
   .
   vendid=0x2c9
   devid=0x673c
   sysimgguid=0x3ba000100c70b
   caguid=0x3ba000100c708
   Ca      2 "H-0003ba000100c708" # "nsn34-39 HCA-1"
   [2](3ba000100c70a)      "S-00bad0cc010016a2"[22]                # lid 58 lmc 0 "Sun DCS 648 shmm1500 LC slot 6 switch 0" lid 1 4xQDR
   #

   ---

   Note - The output in the example is just a very small portion of the full output.

   ---

3. Perform InfiniBand fabric diagnostics.

   See Perform Diagnostics on the InfiniBand Fabric.

Related Information

• Switch Command Reference, ibnetdiscover command

• Check Link Status

• Installing the InfiniBand Software Stack