How to query and test the most relevant Simple Network Management Protocol (SNMP) Object Identifiers (OID) for Symantec Messaging Gateway.
Symantec Messaging Gateway 10.x and later.
An OID, in the context of the Simple Network Management Protocol (SNMP), consists of the object identifier for an object in a Management Information Base (MIB).
SNMP itself does not define which information (which variables) a managed system should offer. Rather, SNMP uses an extensible design, where the available information is defined by management information bases (MIBs). MIBs describe the structure of the management data of a device subsystem; they use a hierarchical namespace containing object identifiers (OID). Each OID identifies a variable that can be read or set via SNMP.
All SNMP OIDs that can be queried on SMG can be observed by downloading the MIB files provided with the appliance (Administration > SNMP > Enable > MIBs).
To facilitate testing with SNMP queries and traps, it is recommended to avail of a MIB browser client/tool such as the iReasoning MIB Browser (http://ireasoning.com/mibbrowser.shtml)
The steps below should help in testing SNMP on SMG:
|ssSwapIn||.220.127.116.11.4.1.2021.11.3||UCD-SNMP-MIB||Amount of memory swapped in from disk (kB/s).|
|ssSwapOut||.18.104.22.168.4.1.2021.11.4||UCD-SNMP-MIB||Amount of memory swapped to disk (kB/s).|
|ssCpuRawUser||.22.214.171.124.4.1.2021.11.50||UCD-SNMP-MIB||user CPU time.|
|ssCpuRawNice||.126.96.36.199.4.1.2021.11.51||UCD-SNMP-MIB||nice CPU time.|
|ssCpuRawSystem||.188.8.131.52.4.1.2021.11.52||UCD-SNMP-MIB||system CPU time.|
|ssCpuRawIdle||.184.108.40.206.4.1.2021.11.53||UCD-SNMP-MIB||idle CPU time.|
|ssCpuRawWait||.220.127.116.11.4.1.2021.11.54||UCD-SNMP-MIB||iowait CPU time. This is primarily a SysV thingie|
|ssCpuRawKernel||.18.104.22.168.4.1.2021.11.55||UCD-SNMP-MIB||kernel CPU time.|
|ssRawContexts||.22.214.171.124.4.1.2021.11.60||UCD-SNMP-MIB||Number of context switches|
Note: SMG may use up to three MTA instances, therefore each OID has and additional last digit indicating the MTA queue (.1 / .2 / .3).
Note: Some of the OIDs below may not return any result according to different SMG models.
Below is the full list of SNMP v1 traps that can be handled by SMG. For more information on each trap, please refer to the MIB files provided by SMG, or use a freeware SNMP MIB Browser client.
Note: The command line utility “snmpwalk” was used to retrieve the examples below.
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