Cabletron Systems CyberSWITCH CSX150 User Manual

Also see for CyberSWITCH CSX150: User guide Quick start guide

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Small Office Remote Access Switch 285C ONFIGURING SNMPSNMP Background InformationCurrently, each object in the above MIB-2 groups can be retrieved via an SNMP GetRequest orGetNextRequest PDU. However, only the snmpEnableAuthenTraps object in the SNMP group canbe changed via the SNMP SetRequest PDU.Note: Any system object that is changed via an SNMP SetRequest will be returned to its initialvalue when that system is restarted due to power loss or the action of an system operator.The definition for the Enterprise portion of the MIB is given in the ih_mib.asn file on the systemsoftware. The Enterprise MIB consists of four main groups: the ih000ConfigData group, whichcontains the configuration data for the system; the ih000Statistics group, which contains run-timestatistics which are maintained by the system; the ih000StatusReports group, which can be used toremotely display the report status log messages that appear at the administrative console when thedr command is entered; and the ihSystemMonitor group, which can be used to monitor systemstatus information such as the status of the system’s interfaces, the usage of ISDN B-channels, andinformation regarding connected devices. Refer to the ASN.1 format of the Enterprise MIB in theih_mib.asn file on the system software for more information on the Enterprise MIB.In addition to the use of SNMP Request and Response PDUs to exchange data, the SNMP Agentwill also generate SNMP Trap PDUs to inform the Network Management Station of importantsystem events. Whenever such an event occurs, the appropriate SNMP Trap PDU will be sent toeach NMS that has been configured as a Trap Receiver using the CFGEDIT utility. The NMS thatreceives the Trap can be attached to the same LAN as the sending system, or it can be attached to aremote LAN.The current set of Traps that the SNMP Agent will generate include generic traps and enterprisetraps. The following generic traps are available:• coldStart TrapAn Agent will generate a coldStart Trap PDU at startup time.• linkUp TrapAn SNMP Agent will generate a linkUp Trap PDU when the Agent detects that a new link hasbeen placed in service.• linkDown TrapAn SNMP Agent will generate a linkDown Trap PDU when the Agent detects that a link hasbeen removed from service.• authenticationFailure TrapAn SNMP Agent will generate an authenticationFailure Trap PDU when a PDU with anunknown Community Name or an invalid MIB access level has been received.The following enterprise traps are available:• isdnUsageHigh TrapAn SNMP Agent will generate an isdnUsageHigh Trap PDU when the Agent detects that thenumber of B-Channels in use meets or exceeds the configured B-Channel threshold. Theenabling of this trap and its threshold value are configured through the CFGEDITconfiguration utility.• isdnUsageNormal TrapAn SNMP Agent will generate an isdnUsageNormal Trap PDU when the Agent detects that thenumber of B-Channels in use has returned to a value below the configured threshold value.