NVIDIA Docs Hub NVIDIA Networking Networking Software ibdiagnet InfiniBand Fabric Diagnostic Tool User Manual v2.8.0 Fabric Discovery

Fabric Discovery

The section specifies additional options applicable to the fabric discovery stage of ibdiagnet.

Parameter	Description	Example
--enable_switch_dup_guid	By default, ibdiagnet does network discovery without checking duplicated switch GUIDs. To allow duplicated switch GUIDs check, this option should be specified.	`ibdiagnet --enable_switch_dup_guid`
--enable_spst	Deprecated. Speeds up fabric discovery by detecting down ports from switch's "Switch Port State Table". A switch must support the table. Otherwise will have no effect.	`ibdiagnet --enable_spst`
--discovery_only	Discovers a network and dumps it into ibdiganet2.db_csv file. This file may be used later with --load_from_file option.	`ibdiagnet --discovery_only`

Running ibdiagnet without Fabric Discovery

The following ibdiagnet option can be used to avoid fabric discovery and speed up fabric diagnostics.

Parameter	Description	Notes
-f \| --load_from_file <path to ibdiagnet2.db_csv file>	Loads ibdiagnet db_csv from file to skip fabric discovery. HCAs and switches configuration will be obtained from the provided file. The input file must be a valid ibdiagnet db_csv file.	The following command should be run prior to ibdiagnet -f invocation: `ibdiagnet --discovery_only -o /tmp` Once valid ibdiagnet.db_csv is created in /tmp directory, one can run: `ibdiagnet -f /tmp/ibdiagnet2.db_csv`

Parameter

Description

Notes

-f | --load_from_file <path to ibdiagnet2.db_csv file>

Loads ibdiagnet db_csv from file to skip fabric discovery. HCAs and switches configuration will be obtained from the provided file. The input file must be a valid ibdiagnet db_csv file.

The following command should be run prior to ibdiagnet -f invocation:

ibdiagnet --discovery_only -o /tmp

Once valid ibdiagnet.db_csv is created in /tmp directory, one can run:

ibdiagnet -f /tmp/ibdiagnet2.db_csv