NMGR Module

The NMGR module represents the node to the network from a Network Management perspective. NMGR acts as the focal point for all incoming and outgoing messages related to HP Network Link Management functions.

For packets received from the NM module, the local NMGR module determines whether the command may be processed locally, or requires transmission over the LAN to a remote NMGR module for execution. Packets containing commands from a remote NMGR module are executed only.

Commands or messages from NM or from remote nodes are processed by NMGR sequentially as received.

Command Execution Errors

If an error occurs during NMGR command execution, error messages are generated. A detailed listing of error codes and definitions are listed in Appendix A.

Error messages are returned to the initiator of the failed command:

DIf a command was initiated locally, error messages are returned to the local NM module, where they are formatted and displayed on the user's terminal.

DIf a command was initiated remotely, error messages are returned to the remote NMGR module.

DIf the local NMGR module receives an error message from a remote NMGR module, it is passed to the local NM module and displayed on the user's terminal, presuming other errors did not intervene during this process.

There are four types of errors returned by the NMGR module. In each case, the station address of the node reporting the error, and the Service Access Point (SAP) of the process reporting the error, are returned.

Link Error (LE). Although not rigidly defined, Link Errors are Node Manager software errors that occur primarily during Multicast Address and file processing. The error code returned will be the characters LE followed by three hexadecimal digits that specify the error (for example, LE008 specifies •Multicast Address does not exist").

NM Error (NM). These Node Manager software errors occur primarily when the NMGR module cannot process a particular command even though it was passed by the NM module. In a sense, the NMGR module contains an additional layer of intelligence for screening Node Manager commands. The error code returned will contain NM followed by three hex digits that specify the particular error (for example, NM004 specifies •Illegal function for this parameter").

FMP Error (FM). File Management Package error codes are retrieved by the NMGR module and converted from negative to positive values. The error codes returned will contain FM followed by three hex digits that specify the particular error. (For FMP decimal error code meanings, refer to your RTEA Quick Reference Guide, part number 92077"90020.)

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