TCP/IP Management Programming Manual

Management Programming
HP NonStop TCP/IP Management Programming Manual—529636-001
2-2
How a Management Application Fits Into the
Architecture
subsystem. The subsystem then returns the appropriate response to the application
through SCP. This means that the exchange of a command and response between
your application and the subsystem is bidirectional and occurs synchronously. The
commands available to you for managing the TCP/IP subsystem are listed in Table 2-1
on page 2-4.
The EMS interface requires the subsystem to initiate the communication. The
subsystem reports event information when events happen, not in response to a
request from a management application. The communication between EMS and your
management application is unidirectional and occurs asynchronously. Using EMS, a
management application can monitor events that occur in the TCP/IP subsystem,
enabling the application to handle problems occurring in the subsystem or to track the
current status of the subsystem. An application can then retrieve the event messages
from the consumer distributor process. If you want your application to retrieve only
specific information, you can write a filter. Figure 2-1 on page 2-3 illustrates how a
management application fits into the TCP/IP subsystem architecture.