For the external CDRM

ISTATUS=ACTIVE
Specifies that a session is attempted between the host in which this statement is being defined and the CDRM named by this definition statement. Any attempt to establish this session fails if either the host CDRM or the external CDRM is not active. Code ISTATUS=ACTIVE only if:
  • This CDRM is in the same major node as the host CDRM (for which ISTATUS=ACTIVE is coded), or
  • This CDRM major node is to be started after the host CDRM is active.
ISTATUS=INACTIVE
Specifies that a session between CDRMs is not automatically attempted when the CDRM major node is started.

After its major node has been started, a CDRM defined as INACTIVE can be started with the VARY ACT command, or for a CDRM in another domain, by receiving a session-activation request from the domain.