ServerNet Cluster Manual

Upgrading a ServerNet Cluster
ServerNet Cluster Manual—520575-003
4-32
Fallback for Upgrading ServerNet Cluster Software
With System Loads to Obtain G06.12 Functionality
detailed steps, refer to Using the TSM Service Application to Download the
ServerNet II Switch Firmware or Configuration on page 4-99.
i. Use the TSM Service Application to perform a hard reset of the nearest Y-
fabric cluster switch:
1. From the Cluster tab, click the plus (+) sign next to the External ServerNet
Y Fabric resource to display the Switch resource.
2. Right-click the Switch resource and select Actions. The Actions dialog box
appears.
3. In the Actions dialog box, choose Hard Reset, and click Perform Action.
j. Use the TSM Service Application to verify the operation of the Y-fabric cluster
switch.
k. On all nodes, use SCF to make sure that direct ServerNet communication is
possible on both fabrics between all nodes connected to the cluster switches:
>SCF STATUS SUBNET $ZZSCL
l. On all nodes connected to the cluster switch, use SCF to ensure that the
ServerNet node numbers used by the MSEB port and ServerNet II Switch port
are consistent:
>SCF STATUS CONN $ZZSMN
Note. If the cluster switch is currently running T0569AAA firmware, updating the
configuration can change the fabric setting. The fabric setting (X or Y) will change to a
default setting (X) when the T0569AAA configuration is loaded in the switch. The
T0569AAA configuration normally should be loaded on the cluster switch only when a
configuration fallback is being performed.
If the cluster switch is installed on the external Y fabric, you need to reconfigure the
fabric setting in the cluster switch back to Y after the fallback. Until you perform this
action, ServerNet traffic through the cluster switch remains disabled.
You can use the Set LED to { X | Y } Side action in the TSM Service Application to
correct the fabric setting.
If the cluster switch is currently running T0569AAB firmware, the configured fabric
setting (X or Y) remains unchanged when either the T0569AAA (fallback) or the
T0569AAB configuration is loaded in the cluster switch.
Note. Using the SCF STATUS SUBNET $ZZSCL command requires T0294AAA or a
superseding SPR. If remote passwords are configured, you can issue the SCF
STATUS SUBNET $ZZSCL command for a remote node (for example, \REMOTE) on
the local node as follows:
SCF STATUS SUBNET \REMOTE.$ZZSCL
This command eliminates the need to establish a logon window on each node.