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Figure 3-3
Private network setup with crossed links
Crossed link
Public network
Private networks
To set up the private network
1
Install the required network interface cards (NICs).
Createaggregated interfacesifyou wantto usethese tosetup privatenetwork.
2
Connect the VCS private NICs on each system.
3
Use crossover Ethernet cables, switches, or independent hubs for each VCS
communication network. Note that the crossover Ethernet cables are
supported only on two systems.
Ensure that you meet the following requirements:
■ The power to the switches or hubs must come from separate sources.
■ On eachsystem, you must use two independent network cardsto provide
redundancy.
■ The network interface card to set up private interface is not part of any
aggregated interface.
Duringthe processof settingup heartbeatconnections, considera case where
a failure removes all communications between the systems.
Note that a chance for data corruption exists under the following conditions:
■ The systems still run, and
41Preparing to install VCS
Performing preinstallation tasks