SeeView Server Gateway (SSG) Manual

Introducing SSG
HP NonStop SeeView Server Gateway (SSG) Manual—526356-004
1-11
General Command Interpreter Observations
General Command Interpreter Observations
The SSG acts as a proxy agent to approximately 60 products via various NonStop OS
command interpreters. These CIs represent a major legacy investment made by HP
and its customers. Because the CSG/SSG strictly adheres to the HP Command
Language Standard, the CSG/SSG can also provide access to customer-written
command interpreters that conform to this standard.
Command interpreters behave somewhat like objects. They are totally encapsulated. It
is not necessary to access their memory.
Communication with command interpreters occurs via messages. You send them
messages, and they respond with messages.
Another characteristic of command interpreters is that they are purely text-based. Text
provides a normalized communication media that has a wide variety of applications,
including command, control, status, and statistics, as well as allowing for scripting of
command and configuration files.
For NonStop OS, command interpreters are essentially open. Both people and
programs can access them. Their methods and properties are fully published in HP
manuals. Because command interpreters are universally accessible by both people
and programs, they represent a unique infrastructure for NonStop servers.
Key points about command interpreters:
•
They represent customer investment.
•
HP products will continue to use them.
•
CIs address grammar-directed solution spaces.
•
CIs represent a unique infrastructure for HP.
•
The CSG provides workstation access to CIs via the SSG.