User guide

5 SNMP (Simple Network Management Protocol)
5.1 Diagnostics via SNMP
Via SNMP (Simple Network Management Protocol), a network management station can
configure and monitor stations with SNMP capability. To this end, a management agent is installed in the station.
The management station exchanges data via so-called get and set requests.
5.2 Management Information Base MIBs
An MIB (Management Information Base) is a device database. SNMP clients access this database in the device.
The DK ERTEC200 PNIO supports standardized MIBs: MIBII and LLDP-MIB
Standardized MIBs are defined in RFC standards and contain parameters that are divided into so-called groups.
5.3 SNMPv1 and SNMPv2 Protocols
The SNMP agent integrated in the DK ERTEC200 PNIO supports the SNMPv1 and SNMPv2 protocols.
All objects of the MIB-II and LLDP-MIB that are relevant for the product can be queried via the SNMPv1 and
SNMPv2 protocols. The MIB-II of the DK ERTEC200 PNIO
contains all groups except egp and transmission.
5.4 SNMP Communities
Access via SNMP is governed by the Communities concept. Communities are passwords used for SNMP
access. In the development kit, communities are permanently set to the default values "public" and "private".
A
ccess Community
Read access only public
Read and write access private
5.5 Definition of Abbreviations and Source for Additional Information
Refer to the table below for a definition of abbreviations mentioned above and an indication of where you can find
additional information.
Abbreviation Meaning
Additional
Information
SNMP
Simple Network Management Protocol
RFC 1157
SNMP V2 Simple Network Management Protocol Version 2
(Administration, protocol operations, and security)
RFC 1901 and
RFC 1905
SMIv1
Structure and Identification of Management
Information – describes the structure of the MIB
objects.
RFC 1155
MIB-II Management Information Base, Version 2 RFC 1213
5.6 Variables of the MIB II Standard
Variables in the System Directory
The following table shows some SNMP variables of the MIB II standard for monitoring the device status from the
System directory. The access authorizations refer to access via the SNMP protocol.
Variable Access
Authorizations
Description
sysDescr Read only Contains a vendor-specific device ID such as SIEMENS,
SIMATIC NET, or
ERTEC200 Developmentkit
A
string of up to 255 characters is used.
Data type: DisplayString
sysObjectID Read only 0, as a device-specific (private) MIB is not supported
Copyright © Siemens AG 2008. All rights reserved. 33 DK_ERTEC200_PNIO_Description
Technical data subject to change Version 3.0.0