IBLINKINFO - report link info for all links in the fabric
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
Print only nodes which have a port in the "Down"
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).
Print additional port settings
Show only switches in output.
Show only CAs in output.
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
-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.)
For switches results are printed for all ports not just switch port
--switch, -S <port_guid>
same as "-G". (provided only for
How much of the scan to be printed can be controlled with the following.
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
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.
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.
Specify what diff checks should be done in the
option above. Comma separate multiple diff check key(s). The
available diff checks are: sw = switches
, ca = channel adapters
= routers, port
= port connections, lid
= node descriptions. Note that port
are checked only for the node types that are specified (e.g.
). If port
is specified alongside
, remote port lids and node descriptions will
also be compared.
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
-C, --Ca <ca_name>
use the specified ca_name.
-P, --Port <ca_port>
use the specified ca_port.
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:
--config, -z <config_file>
- the first port that is ACTIVE.
- if not found, the first port that is UP (physical link
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.
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.
Specify alternate config file.
- --outstanding_smps, -o <val>
- Specify the number of outstanding SMP's which should be
issued during the scan
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
- -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.
- show send and receive errors (timeouts and others)
show the usage message
- -v, --verbose
- increase the application verbosity level. May be used
several times (-vv or -v -v -v)
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.
# 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"
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
- < email@example.com >