21SNMP SettingSimple Network Management Protocol (SNMP) is an OSI Layer 7 (ApplicationLayer) designed specifically for managing and monitoring network devices.SNMP enables network management stations to read and modify the settings ofgateways, routers, switches, and other network devices. Use SNMP toconfigure the DWL-P1012 features for proper operation, monitor and detectpotential problems in the DWL-P1012, switch, switch group or network.Managed devices that support SNMP include software (referred to as an agent),which runs locally on the device. A defined set of variables (managed objects) ismaintained by the SNMP agent and used to manage the device. These objectsare defined in a Management Information Base (MIB), which provides astandard presentation of the information controlled by the on-board SNMPagent. SNMP defines both the format of the MIB specifications and the protocolused to access this information over the network.The DWL-P1012 supports SNMP version 1. In SNMP v.1, user authentication isaccomplished using 'community strings', which function like passwords. Theremote user SNMP application and the DWL-P1012 SNMP must use the samecommunity string. SNMP packets from any station that have not beenauthenticated are ignored (dropped).The default community strings for the DWL-P1012 used for SNMP v.1management access are:public - Allows authorized management stations to retrieve MIB objects.private - Allows authorized management stations to retrieve and modify MIBobjects.TrapsTraps are messages that alert network personnel of events that occur on theDWL-P1012. The events can range from System Start to PoE port statuschange. The DWL-P1012 generates traps and sends them to the trap recipient(or network manager). Typical traps include trap messages for Device boot up,Authentication Failure and PoE status change.