EMS Manual

Introduction to EMS
EMS Manual—426909-005
1-3
EMS Communications in the DSM Environment
EMS Communications in the DSM
Environment
EMS uses two types of interfaces to communicate with other components of DSM (for
example, ViewPoint) and with processes that use DSM to manage a system or
network:

EMS Interface. This interface manages event reporting in a system or network. It is
the mechanism used to send event messages to EMS. Subsystems, HP or user-
written applications, and DSM processes (such as ViewPoint and DNS) use it to
send event information to the EMS primary collector by subsystems. EMS
processes themselves use this interface to report event information to the primary
collector.

Command-Response Interface. This interface is used to issue commands and
receive responses about resources in a system or network. HP or user-written
management applications can use the command-response interface. For example,
a management application can issue a command to a subsystem to open a
communication line.
Figure 1-2 is a simplified diagram of the lines of communication between the
components of a DSM system.
Figure 1-1. EMS in the System Environment
Event Management Service - EMS
Subsystem
Environment
Operations
Environment
Printer/file/
terminal
Remote
Collector
Management
Application
Primary
Collector ($0)
Printing
Distributor
Forwarding
Distributor
Consumer
Distributor
Event Log
Files
Event Log
Files
Subsystems
Alternate
Collectors
VST004.vsd