HP Cluster Management Utility CMU Installation Guide with Serviceguard Version 4.0 (May 2009)

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Figure 2
Figure 3 shows the case of a “classic” CMU with one CMU management server with compute nodes
connected directly to the site network. A unique ip addres IP0 is used for compute node management
and Site network access.
Figure 3
Figure 4 show the corresponding configuration where two CMU management servers run CMU software
in active/standby mode under control of serviceguard. The address IP0 is attached to the server actually
running CMU software at a given time. This is the unique address CMU is aware of. Each CMU
management server has its own ip address on the site network, respectively IP2 and IP3, unknown to
CMU. Note that though not needed by CMU, a private network in still required by serviceguard for its
internal functioning.