Cluster I/O Protocols (CIP) Configuration and Management Manual (H06.16+, J06.05+)

As of the H06.21 and J06.10 RVUs, CLIM-to-CLIM failover is supported for all types of CLIMs, and
Telco CLIMs do not require a unique Provider.
Failover is not supported for the maintenance Provider interface, only the data LAN interfaces.
Multiple maintenance Providers can be configured on different CLIMs if fault-tolerance is desired
but fault handling must be done explicitly by the applications in that case.
Figure 6: CLIM-to-CLIM Failover, Single Interface (page 38) and Figure 7: Full CLIM Failover
(page 39) both show CLIM-to-CLIM failover. Figure 6: CLIM-to-CLIM Failover, Single Interface
(page 38) shows what happens when a single interface fails or loses network connectivity, but the
CLIM is still operational. The clim1.eth4 interface is paired with clim2.eth1 for failover. When
clim1.eth4 fails, its resources are moved to clim2.eth1 and the NonStop OS updates its tables so
references to clim1.eth4 are directed to clim2.eth1.
Figure 6 CLIM-to-CLIM Failover, Single Interface
38 Overview