Each CA, router, and switch contains the following management agents:
Implementation of the SMA, PMA, and BMA is required.
Implementation of the DMA, SNMP tunneling agent, Vendor-specific agent, and Application-specific agents is optional.
When an asynchronous, exceptional condition associated with one of the implemented management agents occurs, that agent may wish to send an event notice to its respective GSM.
It does this by issuing a Trap(Notice) MAD wherein the Notice attribute indicates the event of interest. Table 9-3 on page 178 describes the contents of the Notice attribute that is returned in the Data field of the Trap MAD.
|Field Name||Description ...|