14.5 Check Link Status
After starting the Subnet Manager, you can verify that the Link LEDs for cabled links
are green. If the Link LED is dark, the link is down. If the Link LED flashes, there are
symbol errors.
To check the link status of the cables:
# listlinkup
If the link for a connector is reported as not present, the link at either end of the cable
is down. If a port is down, use the enableswitchport 0 portnumber command
to bring the port up. Alternatively, use the ibdevreset command to reset the switch
chip.
See the Sun Datacenter InfiniBand Switch 36 User's Guide, "Enable a Switch Chip Port"
and "Reset the Switch Chip".
After making sure that the link is up, you can verify the InfiniBand fabric.
The following is example output of the listlinkup command:
# listlinkup
Connector 0A Present <-> Switch Port 20 up (Enabled)
Connector 1A Present <-> Switch Port 22 up (Enabled)
Connector 2A Present <-> Switch Port 24 up (Enabled)
.
.
.
Connector 15A Not present
Connector 0A-ETH Present
Bridge-0-1 Port 0A-ETH-1 up (Enabled)
Bridge-0-1 Port 0A-ETH-2 up (Enabled)
Bridge-0-0 Port 0A-ETH-3 up (Enabled)
Bridge-0-0 Port 0A-ETH-4 up (Enabled)
Connector 1A-ETH Present
Bridge-1-1 Port 1A-ETH-1 up (Enabled)
Bridge-1-1 Port 1A-ETH-2 up (Enabled)
Bridge-1-0 Port 1A-ETH-3 up (Enabled)
Bridge-1-0 Port 1A-ETH-4 up (Enabled)
Connector 0B Present <-> Switch Port 19 up (Enabled)
Connector 1B Present <-> Switch Port 21 up (Enabled)
.
.
.
Connector 15B Not present
#
14.6 Verify the InfiniBand Fabric in a Multirack Configuration
Use the following commands on the command-line interface (CLI) of the spine switch
to verify that the InfiniBand fabric in your multirack configuration is operational:
1.
ibnetdiscover
Discovers and displays the InfiniBand fabric topology and connections. See
Discover the InfiniBand Network Topology in a Multirack Configuration.
2.
ibdiagnet
Check Link Status
Use the Sun Datacenter InfiniBand Switch 36 in Multirack Configurations 14-5
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