In CAICCI SNA network configurations, two or more mainframe CAICCI instances are connected using VTAM and SNA LU0 protocols. The host computers may be local or remote and may be running z/OS, VM, or VSE operating systems. Each host may run any number of CA products.
The following graphic shows a typical two‑host CAICCI network configuration where each host runs one CA product. The same concepts apply, no matter how many CA products share CAICCI connections.

The two mainframes are referred to as CCIA and CCIB. In each computer, you must configure VTAM resources for the local and remote CAICCI instances using the following process:
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