Ip Assignment Management Tool

Working With IP Address Manager Tool  

IP Address Manager utility of OpUtils software identifies whether an IP Address is currently available or not. The tool helps in management of the IP addresses in a static DNS environment, using pre-defined user policy. The tool scans a subnet and provides the availability status of IP addresses in that subnet. One can check whether a particular IP is used or available.

Adding Subnets for Scanning

Adding Subnets Manually

  1. Click the IP Address Manager tab.

  2. Click the Add/Edit Subnets tab and click Add Subnet link. When you add a router from the Switch Port Mapper, Rogue Detection, or from Admin --> Add Routers, the subnets discovered in the routers will automatically be added to the IP Address Manager tool. You need to review these subnets and approve before it gets scanned.

  3. Add Manually tab is selected by default. Select the Parent Node under which the subnet has to be added by clicking the Select Parent Node link

  4. Enter the Subnet or IP address of any network as input in the Subnet/IP Address field.

  5. Select the Subnet Mask from the combo box.

  6. Specify the additional details of the subnets and VLANs, if required.

  7. Select the Scanning options:

    1. To check the IP Availability using ICMP.

    2. To get the device details using SNMP.

    3. To resolve the DNS name of the IP.

    4. To get the device type and hardware details of Windows machines using WMI.

  8. Click Add. The subnet gets added to the table below and are automatically scanned.

  9. Repeat steps 3 to 7 for adding more subnets.

Importing Subnets from a CSV File

  1. Click the IP Address Manager tab.

  2. Click the Add/Edit Subnets tab and click Add Subnet link.

  3. Select the Import From CSV tab.

  4. Browse to select the CSV file.

    1. The CSV file should contain the following fields: Subnet Address, Subnet Mask,Scan Options,Subnet Name, Location, Description and VLAN Name in the same order.

    2. Tree Hierarchy, Subnet Address and Subnet Mask are mandatory fields and all the other fields are optional. If you are not specifying any column between, simply add a comma.

    3. Scan options are denoted by numbers: 0 represents the option is disabled and 1 represents that the option is enabled. The order of the scanning options is ICMP Ping, SNMP Ping, Resolving DNS, and Retrieving details using WMI. To enable all the options you should specify it as 1111 or 0000 to disable all the options.

      Sample CSV File

      Tree Hierarchy, Subnet Address, Subnet Mask , Scan Options,Subnet Name, Location, Description , VLAN Name
  5. If you wish to scan the imported subnets, select the "Scan the imported subnets based on the specified scan options" option.
  6. Click Import CSV.
  7. The subnets specified in the CSV file gets added to the IP Address Manager tool.


Importing IP Addresses

In addition to importing the subnets, the IP Address Manager tool also allows you to import the IP Addresses directly to a subnet that has been added. This can be used to update the custom fields like Asset Tag, Alias Name, System Location, and Phone Number for multiple IP Addresses at once. To import the IP Addresses, follow the steps below:

  1. Click the IP Address Manager tab.

  2. Click the subnet to which you wish to import the IP Addresses. This will list details of the IP Addresses of that subnet.

  3. Click the Import IP Address Details link available above the table. This will open the import dialog showing the fields that you wish to import.

  4. Select the fields that you wish to import to the Selected Columns list.

  5. Browse to select the CSV file

    1. The CSV file should contain the following fields: IP Address, Alias Name, Asset Tag, System Location, Phone Number.
    2. The order should be the same as it appears in the Selected Columns.
    3. The IP Address Field is mandatory and all the other fields are optional.
    4. If you are not specifying any column between, simply add a comma.

      Example CSV File Entry
  6. Click Import
  7. The selected fields gets updated for the given IP Addresses.

Importing IP Addresses with Columns having Pre-defined Values

While the steps to import the data remains the same as above, the following points have to be noted:
  1. The column values should be one among the possible values that this column can have. For example, the columns Device Type and Owner has a set of pre-defined values. Similarly, you can also create a custom column with defined possible values.
  2. You cannot have these special characters in your possible values: ? & % ' \ " _ ` \ +
  3. The value is not case sensitive.
  4. When you specify a wrong value, the whole row will be skipped. You may have to re-import those rows after correcting the errors.
  5. If the value contains a comma, the value should be mentioned within double-quotes in the CSV file

Adding Custom Columns to the IP Address Manager

IP Address Manager allows you to add custom columns both at the subnet-level and at the IP details-level for adding user-defined inputs. These columns can be used to store any specific information about the subnet/IP address. To add a custom column, follow the steps below:

  1. Click the Settings link available in the IP Address Manager tool.

  2. Select the Custom Column tab. This will list all the columns that have been added already.

  3. Click the Add Custom Field link

  4. Specify the following:

    1. Column Name: Name for this column

    2. Column At: Specify whether this column is for the subnet details or for the IP details.

    3. Data Type: Specify what type of data you wish to store in this column. It can be String for text, Integer for numbers, Boolean for true or false, or File for adding a file input. You can also define your own data type by clicking the Custom Datatype link.

    4. Size: The size for this column

    5. Default Value: The default value for this column

    6. Description: A brief description about this column.

  5. Click Add Column

  6. The new column gets added to the subnet/IP-level as defined.

Schedule Subnet Scanning

Click the Scheduler link to enable scanning of subnets periodically:

  1. Change the Status to Enabled

  2. Specify the interval to perform the scan:

    1. Daily - to update everyday. You need to specify the starting time.

    2. Weekly - to update on specific day(s) in a week. You need to specify the starting time and the day(s) on which the update should happen.

    3. Monthly - to update on a specific day every month(s). You need to specify starting time, select a day and select a month/months.

    4. Once Only - to run the tool only once at the scheduled time.

  3. Click Schedule to save the changes.

IP Address Manager Settings

General Settings

Here you can specify the IP Availability Policy and the period to maintain the history of the IP Addresses.

  • IP Availability Policy: This specifies the number of days an IP can be continuously down beyond which it is declared as "Available". Till then the IP Address will be in "Transient" state. The default period is 10 days.

  • IP History: Select the period to maintain the history of the IP Addresses. This will show the details of the devices that has been assigned with that IP Address in the given period. The default period is 3 months.

Configure Email Alerts to Notify Change in State

Alerts are generated for the following events:

  1. When the state of an IP Address changes from "Available to Used" or from "Transient to Available".

  2. When the DNS Reverse Lookup Fails

  3. When the DNS Forward Lookup Fails

  4. When the DNS Forward Lookup returns a different IP



The IP Address Manager tool can be configured to notify specific events by email:

  1. Click the Settings link available in the IP Address Manager tool to open the settings page.

  2. Select the Configure Alert tab.

  3. IP Availability Policy: This determines the state of the IP Address based on the response. Specify the period after which an IP Address has to be declared as Available.

  4. Select the Enable Email Alert check box and select the required events.

  5. Specify the recipients email addresses as comma separated.

  6. Alert Cleanup Policy: Specify the maximum number of Alerts to be stored in the database, the default being 2000. When you delete the older alerts, you have an option to save them as a csv file for future reference.

  7. Click Save.

Add Owners that can be assigned to IPs

The IP Address Manager allows you to add owners and assign them to IP Addresses. This will help to identify whom to contact with regard to that IP Address. To add owners, follow the steps below:

  1. Click the Settings link available in the IP Address Manager tool to open the settings page.

  2. Select the Add Owners tab. This will list the owners that are already added.

  3. Click the Add Owner link and specify the name, email, phone, location etc., and click Add Owner.

  4. Repeat step 3 for adding more owners.

Add Active Directory Domains

When you have a Windows Active Directory based Domain Setup, OpUtils will let your perform the following:

  • Fetch the computer objects from the domains - This information is used to relate an IP address with the domain.

  • Scans the Active Directory to fetch the computer details like System Description, CD Key, Serial Number, etc.

  • Authenticate Oputils users via Active Directory to login to OpUtils Web Console.

Note: You should have installed Oputils on a computer running Windows OS to add Active Directory Domains.


To add the domains, follow the steps below:

  1. Click the Settings link available in the IP Address Manager tool to open the settings page.

  2. Select the Active Directory tab

  3. Specify the Admin User Name, Password, and the Domain/Workgroup name and click Save.

Auto-Publishing the Scanning Results

The IP Address Manager provides an option to automatically publish the scanning results of the subnets to a CSV File. This helps to view the history of the IP States at a later period. Click the Publish tab under IP Address Manager settings to publish the results of the scan to a csv file automatically.

  1. Enable Auto-Publish - Select this option to enable publishing the results to a CSV file automatically. This option is not selected by default.

  2. Publish Directory - Specify a location to store the published results. The default location is <OpUtils_Home>/webapps/IPAMPublish


Viewing IP Address Details

The Summary View provides the graphical representation of the Available and Used IP Addresses in a subnet. You can click the graph to view the corresponding IP Addresses. The summary is also presented in a table below the graph. The status of the IP Addresses are categorized as

    • Used IPs : Displays theIP addresses which are currently in use. Such IP addresses should have responded to Ping in current discovery
      Tip : Such IP's should not be used when assigning addresses to new devices.

    • Available IPs : Displays the IP addresses that are not responded. Such IP Addresses (1)should not have responded in last 10 days to ICMP request. You can change this by clicking the Settings link available in the tool.
      Tip : Such IP's can be assigned to new devices.
      Note: When a user discovers a network for the first time, Available IPs will always be 0.

    • TransientIPs : Displays the list of IP's that are not used in the network. Such addresses should not have responded to Ping in their first discovery and doesn't respond to Ping for the next 10 days.
      Tip : Such IP's cannot be assigned to new devices.

For each of the IP's, the other details displayed include the Status, the DNS Name, MAC Address, Reserved Status, Switch Details, the Last Alive Time, and Last Updated Time.  For SNMP-enabled devices additional details like SysName, SysDescr, SysLocation, and SysOID are retrieved and shown.

You can also filter the view based on the status of the IP Address by selecting the required option from the Filter list.


Viewing the IP History

The IP Address Manager, by default store the three month history of the IP Address. This will maintain the details of the devices to which an IP Address is assigned in the given period. To view the IP history,

  1. From the Summary View click on any subnet to view the details of the available and used IP Addresses in that subnet.

  2. Click the "View IP History" icon available beside the IP Address.


Manually Reserve IP Addresses

OpUtils allows you to manually reserve an IP Address, which can be used for some specific purposes. To reserve an IP Address, follow the steps below:

  1. From the Summary View click on any subnet to view the details of the available and used IP Addresses in that subnet.

  2. Select the IP Addresses to be reserved and select the Reserved option from Mark as field.

  3. To un-reserve an IP Address that has been reserved earlier, select the IP Address and select Not Reserved

  4. You can also change the status by clicking the current reserved status of an IP Address and selecting the required option.


Adding Details to IP Addresses

The IP Address Manager tool allows you to specify the following details to an IP Address:

  • Alias Name: An alternate name or description for an IP

  • Location: The physical location of the device

  • Phone Number: The contact number of the device owner.

  • Asset Tag: The asset tag for device identification

  • Owner: The owner for that IP Address

To add the details,

  1. From the Summary View click on any subnet to view the details of the available and used IP Addresses in that subnet.
  2. Click the edit icon available beside the IP Address and add the required options.
  3. Click Update to update the values.
  4. The specified values gets updated in the database.


Viewing IP Usage Reports

The IP Address Manager provides the following reports based on the Subnets added in the tool. The reports can be drilled down to get the complete details and can be exported to PDF, XLS, and CSV formats.

  • Unused IP Addresses: Provides the subnet-wise details of the IP Addresses that are currently not in use.

  • Reserved-Static IP Addresses: Provides the list of IP Addresses that are marked as "Reserved".

  • IP Usage Summary: Provides a summary view of the subnets and the IP usage statistics in each subnet.

Auditing IP Address Management

The IP Address Manager enables auditing by storing the changes made to the IP Address Manager tool. Each and every change is stored in the database along with the user name, date, time of modification, and the details of the modifications/additions/deletions. The change history is maintained for one month and is configurable. The audit details are also published as an XML file for later reference.


IPAM Auditing is enabled by default and you can configure the period to store the change history as below:

  • Select Settings --> General Settings tab

  • Under IPAM Audit, select the period to store the change history, the maximum being 6 months.

  • Specify the directory to publish the change history. If you wish to save the change history for a longer period (beyond 6 months), you can take a backup of this directory at periodic intervals and save.



Copyright © 2004-2012, ZOHO Corp. All Rights Reserved.


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