SNMP Browser

SNMP browser allows you to select one of the SNMP variables supported by target host. When you select a variable, its object identifier becomes a value of an OID property of SNMP monitor or SNMP SET action.

SNMP Browser

At the top of SNMP browser there is a text field showing the object identifier value. Below this field there is a tree displaying all SNMP variables supported by the tartet host; it reflects the tree-like form of an object identifier and groups variables by MIB. All unknown varuables (ones for which no MIB exists) are grouped in the last 'Unknown' node of the tree. A tree has several columns:

Name/OID - object identifier node (an integer) and its name;
Value - current value of a variable;
OID - full object identifier reconstructed as path in the tree.

On the right side of a tree there is a table showing other useful information for the selected node: its name, name of a MIB file that defines it, access mode, status, type and description. Pay special attention to the description field that explains semantics of each variable.

If you see unknown OIDs in a browser and you have MIB file(s) describing these unknown variables, you can import them using the MIBs... button. If you don't have the MIB file readily available you can search for it using the online resources, such as http://www.mibsearch.com, then download and add the MIB file.

When selecting an object identifier of a variable for the Current Value or Delta counter type, you can only select integer varialbes and other variables that may be interpreted as integers for monitoring. If you don't wish to see other variables in a tree, you can select the Hide non-counters checkbox.

When selecting an object identifier of a variable for the Value has changed or Value is allowed counter type, you can select any type of varialbes. You can still use the Hide non-counters checkbox if you wish.

When selecting an object identifier of a variable for the SNMP SET action, you can select only writable variables; such variables have light green background in a tree. You can use the Hide non-writables checkbox to hide the rest of available variables.

In either mode of SNMP browser operation, one can change the value of any writable variable directly from browser (interactively). In order to do so, select a variable highlighted with light green and press the Change button. This invokes a dialog where you define new value of a variable. Binary data is represented in hex and you can edit it as well. Once you submit the changes, SNMP tree is reloaded to show you the updated value of SNMP variable on target host. In some cases, updating the variable doesn't work (the value doesn't change); for example, sysName and sysLocation are often only editable through the SNMP agent configuration file rather than through SNMP SET. Also, make sure to use SNMP account with read-write access on a target host when making the change; often this is a private community in SNMP v1/v2.

SNMP SET dialog

In order to reload OID tree from target host use the Refresh button.