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ETHERNET • 151Network CommunicationWAGO-I/O-SYSTEM 750ETHERNET TCP/IP5.3.4.9 SNMP V1 (Simple Network Management Protocol)The Simple Network Management Protocol (SNMP) is responsible for thetransport of control data, which enables the exchange of managementinformation, status and statistical data between individual networkcomponents and a management system. Version 1 of the protocol is supported.SNMP represents a standard for the management of devices in a TCP/IPnetwork. An SNMP management workstation polls the SNMP agent in orderto obtain information on the corresponding devices. Components of a device,which the SNMP agent can access or an SNMP agent can modify, aredescribed as SNMP objects. Collections of SNMP objects are contained in alogical database, the Management Information Base (MIB), and the objectsare frequently referred to as MIB objects.In the ETHERNET controller, SNMP embraces the common MIB asdescribed in RFC1213 (MIB II).5.3.4.9.1 Configuration of SNMPThe SNMP is executed via Port 161. The port number for SNMP traps is 162.This port number cannot be changed.The configuration of SNMP is done via the web-based management system ordirectly via SNMP. On the web page stored in the controller, the name of thedevice (sysName), the description of the device (sysDescription), the location(sysLocation) and the contact person (sysContact) can be freely set under the“Snmp” link. In addition, up to 2 trap managers can be specified.5.3.4.9.2 Description of MIB IIThe MIB II conformance to RFC1213 is divided into the following groups:Group Identifier• System Group 1.3.6.1.2.1.1• Interface Group 1.3.6.1.2.1.2• Address Translation Group 1.3.6.1.2.1.3• IP Group 1.3.6.1.2.1.4• IpRoute Table 1.3.6.1.2.1.4.21• IpNetToMediaTable 1.3.6.1.2.1.4.22• ICMP Group 1.3.6.1.2.1.5• TCP Group 1.3.6.1.2.1.6• UDP Group 1.3.6.1.2.1.7• SNMP Group 1.3.6.1.2.1.11• EGP Group 1.3.6.1.2.1.8 |
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