Applies To:

Show Versions Show Versions

Manual Chapter: Device Discovery and Communication
Manual Chapter
Table of Contents   |   << Previous Chapter   |   Next Chapter >>

About device discovery and communication

Before you can use Enterprise Manager™ to manage devices in your network, you must add the devices to the device list. For BIG-IP® devices in your network, you can use the discovery process to search specific IP addresses or IP subnets in your network, and add those devices to Enterprise Manager. During the discovery process, Enterprise Manager attempts to log in to available devices with an administrator user name and password that you supply. If Enterprise Manager succeeds in logging on to devices that it discovers, it adds those devices to the list on the Device List screen.

Discovering devices in your network

After you license and perform initial configuration for Enterprise Manager™, you can discover F5® devices in your network.

Important: To perform the discovery task, you must have administrator privileges with root access for the Configuration utility. To successfully discover devices and receive the user name and password combination, the device must have an active SSL server listening for traffic on port 443.

Discovering devices is the first step toward device management.

  1. On the Main tab, click Enterprise Management > Devices > Device List. The Device List screen opens.
  2. For the Scan Type setting, select one of the following options:
    Option Description
    Address List Select this option if you know the IP addresses specific to the devices that you want Enterprise Manager to discover.
    Subnet Select this option if you want Enterprise Manager to scan your for devices, to discover using the IP address and netmask of the subnet.
    The screen refreshes to display settings specific to the selected option.
  3. If you selected the Address List option, perform the following steps:
    1. In the User Name and Password fields, type a user name and password to use to log on to the discovered device.
    2. Click Add.
  4. If you selected the Subnet, option perform the following steps:
    1. In the IP Address field, type the device IP address.
    2. In the Network Mask field, type the netmask that you want Enterprise Manager to use when searching the network. You can search by class B or C network.
    3. In the User Name and Password fields, type a user name and password to use to log on to each device discovered in the subnet.
  5. Click the Discover button. The Task Properties screen opens and discovered devices appear below the Properties area. The list refreshes until all specified devices are discovered, or until you click Cancel Pending Items.

Troubleshooting communication from Enterprise Manager to a device

If a managed device cannot communicate with Enterprise Manager, the Device List page displays the message, Device cannot contact EM, in the Details column next to a device name. If this occurs, you can troubleshoot potential issues from the command line of the managed device.

  1. Log on to the managed device command line as the root user.
  2. Type the following command where <EM_address> is the IP address of the Enterprise Manager system: telnet <EM_address> 443 This command tests the ability of the managed device to communicate with Enterprise Manager on port 443.
Review the message returned and take corrective measures to establish communication.

Changing the Enterprise Manager IP address on a device

For proper device management communication, the IP address for the Enterprise Manager must be correct on the managed device.
If you have determined that the IP address is not properly configured on a managed device, you can correct it and establish communication.
  1. On the Main tab, click Enterprise Management > Devices > Device List. The Device List screen opens.
  2. In the Device list, click the device name of the device for which you want to verify communication. The Device Properties screen opens.
  3. From the Device Properties list, select Advanced. The screen refreshes to display additional device properties.
  4. In the EM Address field, type the correct IP address of the Enterprise Manager system.
  5. Click the Save Changes button.
Table of Contents   |   << Previous Chapter   |   Next Chapter >>

Was this resource helpful in solving your issue?




NOTE: Please do not provide personal information.



Incorrect answer. Please try again: Please enter the words to the right: Please enter the numbers you hear:

Additional Comments (optional)