Installation and Migration Guide

|Adding a switch plane (SP Switch2 only)

|This section discusses how to reconfigure a one plane system to a |two plane system.

|Step 1: Quiesce your system

|Before adding a switch plane, be sure to quiesce your system as |follows: |

• |All users are logged off nodes
• |No jobs are running
• |Batch submission queues, such as LoadLeveler queues, should be shut down |or quiesced and the node should be removed from the queue.
• |If you are using the Switch Admin daemon for node recovery, stop it |by issuing stopsrc -s swtadmd2.
• |Quiesce the switch using the Equiesce command. |

|Step 2: Install the new switch plane hardware

|Your IBM Customer Engineer (CE) performs this step. This step |includes installing new switches, switch adapters, and switch cables.

|Step 3: Update the state of the supervisor microcode

|Refer to Step 34: Update the state of the supervisor microcode for more information.

|Step 4: Configure the adapters for each node

|Use SMIT or the spadaptrs command to create |css1 switch adapter objects in the SDR for each node. Refer to |your Switch Configuration Worksheet. Use this data to configure the |plane of switches on the nodes.

|See Step 40: Configure additional adapters for nodes for more information.

|DCE notes: |

1. |All adapters must have an ftp and a host account defined |in the DCE database.
2. |If you are adding an additional adapter to a previously DCE-configured |node, perform the following steps: |
   1. |Login to the control workstation as a cell administrator
   2. |Run kerberos.dce -type admin -ip_name |hostname_of_adapter |
   |

|Refer to IBM Distributed Computing Environment for AIX: |Administration Commands Reference for more information on the |kerberos.dce command.

|Step 5: Configure the aggregate IP interface for nodes (optional)

|Refer to Step 41: Configure the aggregate IP interface for nodes (SP Switch2 only) for more information.

|Step 6: Reconfigure the number of switch planes on your system

|To change the number of switch planes defined on your system, issue:

|spswplane -p 2

|Step 7: Set up the new switch plane

|Do installation steps Step 62: Set up the switch through Step 63: Verify the switch primary and primary backup nodes.

|Step 8: Refresh RSCT subsystems

|To refresh the subsystems, issue the following command on the control |workstation:

|syspar_ctrl -r -G

|This command refreshes all the subsystems in each partition such as |hats so that it recognizes the new switch.

|Step 9: Set up nodes to customize

|Perform this step to configure the new adapters on the nodes and to set up |the nodes to use the new switch plane. Use SMIT or issue the |spbootins command to do this by changing the boot/install information |for all the Node Objects in the SDR to specify a bootp response of |customize.

|Set the nodes to customize by issuing the following command:

|spbootins -r customize -l node_list

|Step 10: Reboot all nodes

|Reboot all the nodes.

|Step 11: Start up and verify the switch

|Note:

|If you are using the Switch Admin daemon for node recovery, start it |by issuing startsrc -s swtadmd2 before issuing the Estart |command. |

|To complete this step, perform the following installation steps: |

|

Step 76: Start the optional switch

|

Step 77: Verify that the switch was installed correctly

|

Step 79: Tune the network adapters |