ServerNet Cluster Manual

Upgrading a ServerNet Cluster
ServerNet Cluster Manual—520575-003
4-51
Fallback for Upgrading Software to Obtain G06.14
Functionality
5. If you fell back to earlier firmware from T0569AAE in Step 4, power cycle the
ServerNet II Switch subcomponent of the nearest X-fabric cluster switch:
a. On the ServerNet II Switch front panel, press the Power On button to remove
power. (You must fully depress the button until it clicks.)
b. Wait at least one minute.
c. Press the Power On button again to reapply power to the ServerNet II Switch.
6. Use the TSM Service Application to verify the operation of the X-fabric cluster
switch.
7. If the cluster is connected in a split-star topology, repeat Step 2 through Step 6 on
the external ServerNet X fabric of the other star group of the split-star topology.
8. Use SCF on all nodes to verify that direct ServerNet connectivity has been
restored on the X fabric:
>SCF STATUS SUBNET $ZZSCL
9. Use the Configuration Update action of the TSM Service Application to download
the T0569AAB (or T0569AAA) M6770CL configuration to the nearest Y-fabric
cluster switch. For detailed steps, refer to Using the TSM Service Application to
Download the ServerNet II Switch Firmware or Configuration on page 4-99.
Note. Direct ServerNet connectivity is automatically restored after an interval of
approximately 50 seconds times the number of nodes in the cluster (25 seconds for nodes
running G06.14 or a later G-series RVU). For faster (but manual) recovery of ServerNet
connectivity, use the SCF START SERVERNET \REMOTE.$ZSNET.FABRIC.* command
on all affected nodes after you use the TSM Service Application to verify that the X-fabric
cluster switch is operational.
The START SERVERNET command works only for nodes running G06.12 or a later
G-series RVU. For nodes running G06.09 through G06.11, you can use the following
commands:
SCF STOP SUBSYS $ZZSCL
SCF START SUBSYS $ZZSCL
Stopping and restarting the ServerNet cluster subsystem destroys and restarts
interprocessor connectivity between the node that receives the commands and all other
nodes over both external fabrics.
Note. The following considerations apply when downloading the T0569AAA configuration:
•
Downloading the configuration disrupts ServerNet communications across the X-fabric
cluster switch.
•
The T0569AAA configuration does not support Configuration 2 (0x10001). If the
cluster switch uses Configuration 2, you must change the configuration tag to
Configuration 1 (0x10000) in order to download the T0569AAA configuration. The
guided procedure allows you to change the configuration tag.