OSI/MHS Management Programming Manual

Password Server Interfaces
OSI/MHS Management Programming Manual—424824-001
7-2
Command and Response Definitions
The MRP sends an SPI-formatted request to the password server process. The password
server process then performs the specified request (to validate or generate parameters)
and sends an SPI-formatted reply to the MRP.
The MRP can make many different requests to the password server process. These
correspond to the different services required. The type of service required is indicated
by a token contained in the SPI request.
The MTA password server process does not inherit any TMF transactions from the
MRP. The MRP can apply for a timeout in its communication with the password server
process.
If the MRP fails to communicate with the password server process (either because of a
process failure or a timeout), then the OSI/MHS subsystem is unable to communicate
with remote MTAs that are configured to use the password server.
Command and Response Definitions
There are four types of SPI requests, as listed in Table 7-1. All contain the standard SPI
command and response header where the fields are defined as:
•
SSID—the OSI/MHS subsystem ID
•
Header type—the value of ZSPI-VAL-CMDHDR
•
Command—the value of 0
Figure 7-1. MTA Password Server Programmatic Interface
111CDT .CDD
Password
Server
MHS
Manager
MRP
Association
Establishment
MHS
Database
Password
Database
X.400
MTA
SPI Requests
and Responses
OSI/MHS Subsystem