HP NonStop G-Series - Manual (Page 274)

Cable Connections Between Star Groups
Updating to the Split-Star Topology
If you are updating to the split-star topology, connect the cables as follows:
Port Connects to Cluster Switch Port Cluster Switch
8 X2 8 X1
9 X2 9 X1
10 X2 10 X1
11 X2 11 X1
8 Y2 8 Y1
9 Y2 9 Y1
10 Y2 10 Y1
11 Y2 11 Y1
Updating to the Tri-Star Topology
If you are updating to the tri-star topology, connect the cables as follows:
Port Connects to Cluster Switch Port Cluster Switch
10 X2 8 X1
11 X2 9 X1
8 X3 10 X1
9 X3 11 X1
10 X3 8 X2
11 X3 9 X2
10 Y2 8 Y1
11 Y2 9 Y1
8 Y3 10 Y1
9 Y3 11 Y1
10 Y3 8 Y2
11 Y3 9 Y2
274 Updating ServerNet Cluster Topology