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15.2.5 Disable a Port
If a port is found to be problematic due to a bad cable connection or a physical damage
to the connectors, you can disable the port.
On the command-line interface (CLI), run the following command:
# disableswitchport [--reason=reason] connector|ibdev port
where
reason
is the reason for disabling the port,
Blacklist
or
Partition
.
connector
is the number of the QSFP connector (0A–15B).
ibdev
is the InfiniBand
device name (Switch, Bridge-0-0, Bridge-0-1, Bridge-1-0, Bridge-1-1).
port
is the
number of the port (1–36).
This hardware command disables a QSFP connector and port on the switch chip or a
port on the BridgeX chips. The command addresses either the connector or the port on
the switch chip or the BridgeX port.
The
--reason
option enables you to use a passphrase to lock the state of the port:
•
Blacklist
– A connector and port pair are identified as being inaccessible
because of unreliable operation.
•
Partition
– A connector and port pair are identified as being isolated from the
InfiniBand fabric.
Both the
Blacklist
and
Partition
passphrases survive reboot. You unlock these
passphrases using the
enableswitchport
command with the
--reason
option.
Note:
State changes made with the
ibportstate
command are not recognized by
the
disableswitchport
,
enableswitchport
, or
listlinkup
commands.
The following example shows how to disable and blacklist connector 14A with the
disableswitchport
command.:
# disableswitchport --reason=Blacklist 14A
Disable Switch port 7 reason: Blacklist
Initial PortInfo:
# Port info: DR path slid 65535; dlid 65535; 0 port 7
LinkState:.......................Down
PhysLinkState:...................Polling
LinkWidthSupported:..............1X or 4X
LinkWidthEnabled:................1X or 4X
LinkWidthActive:.................4X
LinkSpeedSupported:..............2.5 Gbps or 5.0 Gbps or 10.0 Gbps
LinkSpeedEnabled:................2.5 Gbps or 5.0 Gbps or 10.0 Gbps
LinkSpeedActive:.................2.5 Gbps
After PortInfo set:
# Port info: DR path slid 65535; dlid 65535; 0 port 7
LinkState:.......................Down
PhysLinkState:...................Disabled
#
Control the InfiniBand Fabric
Monitor and Control the InfiniBand Fabric 15-13