ZyXEL MAX-306 User Guide - Page 222
Snmp Traps, Trap Name, Description
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Chapter 18 The Remote Management Screens The managed devices contain object variables/managed objects that define each piece of information to be collected about a device. Examples of variables include such as number of packets received, node port status 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. The WiMAX Device 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. 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. 18.5.1 SNMP Traps The WiMAX Device sends traps to the SNMP manager when any of the following events occurs: Table 87 SNMP Traps TRAP # TRAP NAME DESCRIPTION 0 coldStart (defined in RFC- A trap is sent after booting (power on). 1215) 1 warmStart (defined in RFC- A trap is sent after booting (software reboot). 1215) 4 authenticationFailure (defined A trap is sent to the manager when receiving in RFC-1215) any SNMP get or set requirements with the wrong community (password). 6 whyReboot (defined in ZYXEL-MIB) A trap is sent with the reason of restart before rebooting when the system is going to restart (warm start). 6a For intentional reboot: 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.). 6b For fatal error: A trap is sent with the message of the fatal code if the system reboots because of fatal errors. 222 User's Guide