Network Scanner Tool


    Network Scanner utility of OpUtils software will help you scan an entire range of IP addresses in your network to:

    • Identify the availability of the devices through ICMP or SNMP

    • Check the forward and reverse lookup actions

    • Identify the MAC Addresses of the devices

    To scan your network

    1. Choose Settings -> Tools --> Network Monitoring -> Network Scanner
    2. The input to the Network Scanner tool can be any or combination of the following. Click Add IP and choose:

      1. IP Range: Enter the Starting IP and Ending IP in the text field provided and click Add. The specified range gets added to the table below.

      2. IP List: Enter the IP Addresses as comma separated values and click Add. You can also specify a range like 192.168.113.1-10,192.168.21-20. The specified IP Addresses gets added to the table below.

    3. Choose the options to Scan:

      1. Ping Scan - helps you to identify the device availability through ICMP

      2. SNMP Scan - helps to identify the device availability using SNMP. The community string specified in the settings will be used.

      3. MAC Address Scan - helps to identify the MAC addresses of the devices

      4. DNS Scan - helps you to check the forward and reverse lookup actions

    4. Click Scan

    5. Check the results - depending on the options chosen for scan, you will find the scan results updated in the table below and a summary of each scan as a graph at the top of the table.

    6. To clear the result of specific set of IPs, select the rows and click Clear Results. To clear all the results, click Clear All Results.

    7. To delete a row or set of rows from the table, select the rows and click Delete.

    Interpreting Results

    Different icons are used in the result to notify the status of the system for a particular scan option that was chosen:

    Ping Scan:

     System up and running   

    Represents that the system is Up and is responding to the ICMP Ping

    System not alive

       Represents that the system is Down and us not responding to ICMP Ping   

    System does not exist

    Represents that the system does not exist

    SNMP Scan:

    SNMP Node

    Represents that the system is Up and is responding to the SNMP

    Non-SNMP Node

    Represents that the system is Up and is not responding to SNMP

    System not alive

       Represents that the system is Down and us not responding to SNMP Ping    

        System does not exist    

    Represents that the system does not exist

    DNS Scan:

    Forward Lookup Failed

    Represents the systems for which the DNS to IP resolution fails

    Reverse Lookup Failed

    Represents the systems for which the IP to DNS resolution fails

       Forward Lookup IP Mismatch   

      Represents the systems for which the DNS to IP lookup returns a different IP    

    Success

    Represents the systems whose DNS resolution is successful

    Response Time:

    Response time is represented in milli seconds, which is the sum response times of all the scan types, excluding SNMP Scan, that have been chosen to scan. For example, if you have chosen Ping, MAC Address and DNS Scan options and if a system takes 5ms to respond to each of these scans, then the Response time indicated in the results would be 15ms.