Discovering Resources over an Intranet

Precautions

• Only VMs in VMware vSphere 5.0 to 7.0 can be discovered.
• When the system scans VMware VMs or scans servers on specified network ranges, it uses the servers' private IP addresses and the ID of the used Edge device to identify discovered servers. If a server's private IP address changes after a collection is complete, the server will be identified as a new one during the next collection, and the total number of discovered servers will increase. To avoid this, you are advised not to change private IP addresses of source servers before the migration is complete.

Prerequisites

• You have installed Edge in the source intranet environment and have connected the Edge device to MgC.
• You have added source server credentials to Edge.
  

  To perform a deep collection for your source servers to collect as much as details, provide server credentials that meet the following requirements:

  • Linux: root account and password
  • Windows: Administrator account and password

Creating a Discovery Task

1. Sign in to the MgC console.
2. In the navigation pane on the left, choose Research > Application Discovery. Select a migration project in the upper left corner of the page.
3. If this is your first time to create a discovery task, click Discover over Intranet in the Edge Discovery area.

   If this is not your first time to create a discovery task, choose Discover > Over Intranet in the Discovery Task card.

4. Configure a discovery task based on Table 1.

   Table 1 Parameters for creating an intranet-based discovery task

   Parameter	Description
   Task Name	Specify a name for the task.
   Task Description	Describe the task.
   Device	Select the Edge device in the source intranet environment.

5. Enable Scan Network Range or Scan VMware VMs to discover servers as needed.
   • If Scan Network Range is enabled, configure parameters listed in Table 2.

     Table 2 Parameters for scanning a network range

     Parameter	Description
     Protocol	Select the communication protocol TCP or ICMP.
     Network Range	There are three supported IP address ranges: 10.0.0.0 – 10.255.255.255 172.16.0.0 – 172.31.255.255 192.168.0.0 - 192.168.255.255
     Linux	Enter the port for scanning Linux servers. This parameter is available only if you choose the TCP protocol. If you need to skip Linux servers during the scan, set this parameter to 0.
     Windows	Enter the port for scanning Windows servers. This parameter is available only if you choose the TCP protocol. If you need to skip Windows servers during the scan, set this parameter to 0.

   • If Scan VMware VMs is enabled, enter the IP address of a vCenter Server in the IP Address text box, and select the credential for accessing the vCenter Server. All VMs managed by the vCenter Server will be discovered. If the vCenter Server's credential has not been added, click Create to add it to MgC by referring to Adding Resource Credentials. When adding the credential, enter the username and password for logging in to the vCenter Server.

6. Click Confirm. The intranet-based discovery task is created, and MgC starts collecting details about source servers.

   On the Application Discovery page, in the Discovery Task card, click View next to Total tasks.

7. Wait until the task status changes to Succeeded, and perform a deep collection. Servers discovered on an intranet have an Edge device associated. You need to configure credentials for these servers before you can perform a deep collection.
   1. On the Application Discovery page, click the Resources tab and click the number in the Server row.
   2. Locate a server and click Configure in the Credential column.
   3. Select the server credential. If the credential has not been added to MgC, go to the Edge console and add the server credential to Edge and synchronize it to MgC.
   4. Click OK. Then MgC checks whether the server can be accessed using the associated credential. When Ready appears in the Deep Collection column, click Collect to perform a deep collection. After the first deep collection is complete, you can click Collect Again in the Deep Collection column to perform a second deep collection if needed.