HP NonStop G-Series - Manual (Page 58)

Event Delivery Management 58
6-5 Communication Process in the OVNM Environment
The Elink process is the main communication process in the OVNM environment. The figure below describes the
communication process between the HPOM Management Server and the HP NonStop Server(s) as an example.
Figure 6-4 Communication Process in the OVNM Environment
In the above figure,
sessionctl refers to the Session Control file, which is updated regularly with Node states and the time when
the last message was received for SPI restart control.
ELINK.CFG refers to the Elink Config file.
NonStop Tcpip Stack refers to the generic TCP/IP stack.
The Client Elink reads in the elink.cfg file, which defines the local and remote information. The remote Node
information includes the NonStop Host IP address, Port, the Service provider, Service domain, and the Service
type (Primary/Backup/Broadcast).
You can declare the following service types:
Primary: To run the server in Primary mode
Backup: To run the server in Backup mode
Alert: To run the server in Broadcast mode
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