Recover Ports After Switch Chip Reset

If after resetting an I4 switch chip using the i4reset command ports are still identified as down, restart the environment daemon.

1. On the management console, identify the ports that are down:

   # listlinkup
   Connector  0A Present <-> I4-A Ports 22 down 21 down 20 down
   Connector  1A Not present
   .
   .
   .

   In this example, ports 20, 21, and 22 of switch chip I4-A are down.

2. If the ports are still down, restart the environment daemon:

   # /etc/init.d/envd stop; /etc/init.d/envd start
   #

   Wait one minute for the links to retrain.

3. Verify that the ports are up:

   # listlinkup
   Connector  0A Present <-> I4-A Ports 22 up 21 up 20 up
   Connector  1A Not present
   .
   .
   .

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   Note - If the ports do not come up, repeat this procedure a second time. Additionally, investigate if the respective cable or the InfiniBand device at the other end of the cable is at fault.

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Related Information

• Switch Reference, listlinkup command

• Switch Reference, i4reset command

• Reset the Switch Chip

• Display Link Status