ZyXEL P-324 User Guide - Page 148

Prestige 324 User's Guide etc. A Management Information Base (MIB) is a collection of managed objects. SNMP allows a manager and agents to communicate for the purpose of accessing these objects. SNMP itself is a simple request/response protocol based on the manager/agent model. The manager issues a request and the agent returns responses using the following protocol operations: • Get - Allows the manager to retrieve an object variable from the agent. • GetNext - Allows the manager to retrieve the next object variable from a table or list within an agent. In SNMPv1, when a manager wants to retrieve all elements of a table from an agent, it initiates a Get operation, followed by a series of GetNext operations. • Set - Allows the manager to set values for object variables within an agent. • Trap - Used by the agent to inform the manager of some events. 11.6.1 Supported MIBs The Prestige supports MIB II that is defined in RFC-1213 and RFC-1215. The focus of the MIBs is to let administrators collect statistical data and monitor status and performance. 11.6.2 SNMP Traps The Prestige will send traps to the SNMP manager when any one of the following events occurs: Table 11-4 SNMP Traps TRAP # 0 1 4 6 6a TRAP NAME coldStart (defined in RFC-1215) warmStart (defined in RFC-1215) authenticationFailure (defined in RFC-1215) whyReboot (defined in ZYXELMIB) For intentional reboot : DESCRIPTION A trap is sent after booting (power on). A trap is sent after booting (software reboot). A trap is sent to the manager when receiving any SNMP get or set requirements with the wrong community (password). A trap is sent with the reason of restart before rebooting when the system is going to restart (warm start). A trap is sent with the message "System reboot by user!" if reboot is done intentionally, (for example, download new files, CI command "sys reboot", etc.). 11-8 Remote Management Screens