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SNMP Browser
Using the SNMP MIB Browser
The MIB browser allows you to walk through the standard and proprietary SNMP MIBs of your nodes. You type the OIDs you want in the OID edit field, and get the values from the node by pressing the Browse button.
You can also save 10 frequently used values with a comment.
- IP Address: the address you want to work with
- Community: the community name to access your device's Mib. By default, public on many devices.
- Timeout: wait this long before cancelling the request (in milliseconds)
- Retries: how many time you try to read or write
- Description: This is a descriptive text. Changing it will change the associated OID (just below). It can be changed when Saving an OID to one of the 10 positions.
- Oid: enter the value you want to browse with the keyboard, or choose a favorite value with the list box. All subitems will be fetched.
- Save: This button is enabled when you have typed a new OID in the OID field. It allows to save the new OID and description to one of the 10 available positions.
- Mib Oid, Type, Values: the information retrieved by the browser
- Numbers, Symbolic names: the way the MIB Oid are represented: either with numbers and dots, or with Symbolic Names. See also Integrating External MIBs.
- Get: start retrieving (walking) the Mib values from the position set in the Oid field above.
- Set: displays a dialog for setting a Mib value. In the table above, select the line corresponding to the value you want to change and press Set, or just double click the line.
- Get after Set: read the value immediately after a Set to validate the change.
- Export: exports the result to a file or the clipboard.
The status of all operation is shown in the Last operation result at the bottom of the dialog. Red text indicates an error. If you need information about SNMP, there are hundreds of sites on the subject.
Saving a Favorite OID
You can save up to 10 favorite OIDs. The values will be kept in the Preferences.dat file. To save a new OID:
- Type a new value in the OID field.
- The Save button is automatically enabled, and the description field is also emptied.
- Press the Save Button.
- Another dialog lets you add a text Description for the new OID and choose in which Position (1-10) it will be saved.
Integrating Proprietary MIBs
NetworkView uses the standard procedure offered by Microsoft for integrating external MIBs to the Windows SNMP environment.
- When you want to use symbolic names for walking a proprietary MIB (or the MIB2), the management API looks for this information in a file called MIB.BIN, normally found in the %WINDIR%\SYSTEM32 directory.
- The MIB.BIN is a compiled file. It is build with the *.MIB files found in the same directory
- If you want to add your own MIB (a text file, with probably a .TXT or .MIB extension), you will need the MIB Compiler from Microsoft: MIBCC.EXE. It is available in the Resource Kits for Windows 2000.
- You can add and combine several files, but be careful, the order for specifying the files is important. Read the documentation for MIBCC.EXE in the Resource Kit or check in the MSDN Library for more information (try MIBCC as argument for searching).
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