1. Sometimes I am not able to use the launcher. When I try to start the application nothing happens. What should I do? 

2. Suppose a response comes back in 4.9 seconds on an SNMP timeout of 5 seconds. However, the CPU being very busy causes a delay of 0.2 seconds before picking up the response from the incoming buffer. In this case, would the response be used or would a timeout situation occur?

3. How do I give Hex strings for SET values in MibBrowser?

4. How do I give Hex values in the ContextEngineID or in the ContextName text fields?

5. What are the units for timeout and retry values?

6. How do I set values for the table variables?

7. If I load the MibBrowser applet, I get the error "Error Sending PDUSecurity Exception connecting to remote host" in the browser. Why is this so?

8. In MibBrowser, when I make a request, I get the "NO HOST Specified" error. What should I do?

9. How can I load multiple MIB files in MibBrowser?

10. When I ask for 10 rows in an SNMP table, the GETBULK returns only 6 rows and the last attribute of the sixth row is null. The sixth row seems to be truncated. What should I do?

11. Is MibBrowser supports TCP ? How can I communicate with a TCP agent using MibBrowser ?

12. I got "Unable to establish Tcp Connection with localhost:161". What should I do?

13. When I start the Trap Viewer, I get the "net bind exception". What should I do?

14. Will WebNMS's SAS work under Apache as the web server or will it run under the WebNMS Web Server only? Will the WebNMS Web Server run under Linux PC?

1. Sometimes I am not able to use the launcher. When I try to start the application nothing happens. What should I do?

The environment variables set in the launcher is not taking effect. Delete the launcher.config file and restart the launcher. The default settings will be used by launcher and all the applications will run properly.

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2. Suppose a response comes back in 4.9 seconds on an SNMP timeout of 5 seconds. However, the CPU being very busy causes a delay of 0.2 seconds before picking up the response from the incoming buffer. In this case, would the response be used or would a timeout situation occur?

In this case, a timeout situation occurs.

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3. How do I give Hex strings for SET values in MibBrowser?

The SnmpString class accepts Hex strings in a certain format. Any string that starts and ends with a single quote(') is interpreted as an Hex string. The individual bytes should be separated using a colon(:). For example, if you need to enter 0x2a304cab, it should be supplied as '2a:30:4c:ab'.

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4. How do I give Hex values in the ContextEngineID or in the ContextName text fields?

The Hex values should start with a 0x or 0X. Therefore, if you set a value for contextID or contextName, it should be 0xHHHHHH.

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5. What are the units for timeout and retry values?

Both the timeout and retry values should be given in seconds. If you give the timeout value in milliseconds, it takes much time to get timed out. For example, a value of 1000 waits for 1000 seconds.

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6.How do I set values for the table variables?

To create a new row in a table:

• Define a column with SYNTAX RowStatus, and the definition for the table should have RowStatus object defined.

• Select the Table node from the tree and the Table button from the toolbar to display the corresponding table.

• Right-click on the table header where the name of the column is displayed. It displays a menu with the following options.

  • View Graph for Selected Row

  • Add a New Row to the Table

  • Delete the Selected Rows from the Table

• Select Add a New Row to the Table. It displays a window for entering the values of the table.

• The value for the column with RowStatus syntax should be 4 for creating a new row.

• Click OK after entering all the values.

If RowStatus is not present in the table definition, you can only modify the existing row by double-clicking the corresponding cell in the table.

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7. If I load the MibBrowser applet, I get the error "Error Sending PDUSecurity Exception connecting to remote host" in the browser. Why is this so?

Applets are not allowed to talk to any host apart from the Web server from which they were downloaded. Make sure that SAS is also running along with the Web server.

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8. In MibBrowser, when I make a request, I get the "NO HOST Specified" error. What should I do?

Before making any request, the host name or the IP address of the machine in which the agent is running should be specified in the "Host" text field of MibBrowser.

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9. How can I load multiple MIB files in MibBrowser?

To load multiple MIBs, files should be separated by a blank space and be given within double quotes. 

For example,

java MibBrowserApplication -m "mibs/RFC1213-MIB mibs/RFC1271-MIB mibs/RFC1155-MIB" -h localhost -c public

If you use MibBrowser.sh, edit the file accordingly.

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10. When I ask for 10 rows in an SNMP table, the GETBULK returns only 6 rows and the last attribute of the sixth row is null. The sixth row seems to be truncated. What should I do?

The number of rows you get back may be limited by the PDU size permitted by your agent, manager, or transport

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11. Is MibBrowser supports TCP ? How can I communicate with a TCP agent using MibBrowser ?

Yes. From WebNMS SNMPUtilities 5 Release, MibBrowser supports communicating TCP in addition to UDP protocol with snmp agent. To communicate with a TCP agent , MibBrowser should be configured before invoking from the launcher using the MibBrowser settings of Launcher. And select the Options tab and choose the TCP Protocol. And then start the MibBrowser to communicate with TCP agent.

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12. I got "Unable to establish Tcp Connection with localhost:161". What should I do?

In general after enabling the TCP protocol of MibBrowser settings, and invoking the MibBrowser application in TCP mode, MibBrowser will try to communicate with the TCP agent running in the localhost and with the port 161. If there is no such TCP agent running in the localhost :161 then "Unable to establish Tcp Connection with localhost:161" will be printed in the logs. In that case, change the host and port of a valid TCP agent in the MibBrowser and try communicating with it.

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13. When I start the Trap Viewer, I get the "net bind exception". What should I do?

By default the trap browser starts in the port 162. If the port is reserved or if the port is already used by some application this error will occur. You can restart the trap browser by giving the port no of any unused port.

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14. Will WebNMS's SAS work under Apache as the web server or will it run under the WebNMS Web Server only? Will the WebNMS Web Server run under Linux PC?

The WebNMS SAS server can run under any Web Server and not restricted to WebNMS Web server alone. The Web Server that is bundled along with the product is platform independent and can run under any platform.

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