ServerNet Cluster Manual

Upgrading a ServerNet Cluster
ServerNet Cluster Manual—520575-003
4-84
Steps for Merging a Split-Star Topology and a Star
Topology to Create a Tri-Star Topology
Configuring the star topology cluster to support nodes 17 through 24 means
you will not have to change the ServerNet node numbers supported by the
cluster switches using the split-star topology.
d. Follow the dialog boxes to update the firmware and configuration for the X-
fabric cluster switch if the guided procedure determines that the switch needs
updating. The Add Switch guided procedure invokes another guided
procedure, Update Switch, to update the firmware and configuration.
e. When prompted, repeat the firmware and configuration update for the Y-fabric
cluster switch. The guided procedure remembers the configuration tag you
selected for the X-fabric cluster switch and uses it for the Y-fabric cluster
switch.
Do not connect the two-lane links until you update the firmware and
configuration on all of the X-fabric cluster switches to be used in the tri-star
topology.
5. On any node connected to the cluster that uses the split-star topology, run the Add
Switch procedure:
a. In the Select Upgrade Topology dialog box, select the tri-star topology as the
topology to which you want to upgrade.
b. In the Select Switch Configuration Tag dialog box, select either of the following
configuration tags. If possible, select a configuration tag that allows the cluster
switch to continue supporting the same ServerNet node numbers:
•
Max 24 nodes, nodes 1-8 (0x10002)
•
Max 24 nodes, nodes 9-16 (0x10003)
Because a remote switch is present, the procedure prompts you to disconnect
the four-lane links between the two cluster switches on the X fabric before
updating the local cluster switch. After you disconnect the four-lane links on the
X fabric, continue using the guided procedure to update the local X-fabric
cluster switch.
Note. This procedure assumes that the other two star groups already support nodes
1 through 8 and 9 through 16. You might have to select a different configuration tag if
you are merging a star topology with a subset of a tri-star topology that uses two
cluster switches per fabric.
Caution. All nodes attached to a cluster switch whose configuration will be updated with
T0569AAE must be running G06.14 or a later G-series RVU, or they must be running G06.13
and have the required SPRs listed in Table 4-6
on page 4-8 installed. Any nodes that do not
meet these requirements will experience permanent loss of Expand traffic across the cluster
switch when T0569AAE is loaded on the cluster switch. If you have not already upgraded the
software, refer to Upgrading Software to Obtain G06.14 Functionality on page 4-34.