Wake-on-LAN (WOL) is a feature available on devices and is used to remotely wake up devices that are in shutdown, sleep, or hibernate mode. To perform WOL, you need to enable the WOL option along with certain hardware settings on the device. Wake-on-LAN works only on physical devices with wired network connections.
WOL works within the same subnet. For WOL to work across subnets, you need to make some changes in the router to forward WOL broadcast packets.
See the following sections for more information.
The device should be
Connected to a power source
Connected to a network through a LAN
A managed device that is registered to the ZENworks Management Zone
The proxy server should be registered to the ZENworks Management Zone if the target device is in different subnet.
For Windows-managed devices, enable the following hardware settings before you start using Wake-on-LAN
To enable the Wake-on-LAN option in the BIOS set up of the device:
Enter BIOS Setup during boot up.
Go to the Power menu.
Set Wake-on-LAN to Power On.
Save and exit the BIOS Setup.
See the following sections for more information on enabling WOL in the network card for different Windows platforms:
NOTE:Administrative rights are required for this process. Configuration of the network card can vary depending on the type of network adapter and operating system version.
To enable Wake-on-LAN for the network card on Windows XP devices:
Open theof the managed device.
Click> > .
Go to> right click on the required network adapter > .
Check all wake-on-LAN options in the Wake-on-LAN section.
To enable Wake-on-LAN for the network card on Windows 7 devices:
Open theof the managed device, then click .
Underselect the required network adapter, then click .
To enable Wake-on-LAN for the network card on Windows 8 devices:
Open theof the managed device, then click .
Under Power Options, click thelink.
Check the(recommended) option.
NOTE:On a Windows 8 device, WOL is not supported in shut-down mode and it is supported in Sleep or Hibernate mode.
After enabling the WOL related hardware settings, you can start performing WOL task. The WOL task involves a ZENworks Primary Server, a proxy server and, a target managed device.
Proxy Server: The proxy server can either be a Linux or a Windows device and should also be registered to ZENworks management zone. The proxy server can also be a virtual machine or a physical device.
NOTE:The proxy server can either be a managed device or a Satellite Server. The Linux proxy server is supported beginning with ZENworks 11.2.4.
The following sections provide information about how WOL works:
Once the WOL task is initiated on the specified schedule, the ZENworks Primary Server sends magic packets directly to the target managed device. In this case, the use of a proxy server is optional because the ZENworks Primary Server itself acts as a proxy server as the target managed device and the ZENworks Primary Server are in the same subnet.
Once the WOL task is initiated on the specified schedule, the ZENworks Primary Server sends magic packets to the configured proxy server to wake up the target managed device. In this case, you need to choose a satellite server or a managed device as a proxy server to forward magic packets to the target device.
Magic Packet is a broadcast for the particular subnet which contains the hardware or MAC address of a specific network card. This packet sends signals to the motherboard. The managed device receives this packet, checks if it contains correct information, then activates the power supply and boots the system. The WOL packets can only be sent through the local network.
Magic packets broadcasted within the subnet contain the subnet information, network broadcast address, and the MAC address of the target computer’s network card.
For details, see Section 5.2, WOL - What happens in the background?.
Using ZENworks Control Center you can perform the WOL task either through Quick Task or through the bundle distribution schedule.
The following sections provide information about performing WOL in ZENworks Control Center:
To wake up a managed device through Quick Task.
In ZENworks Control Center click> or .
Select the check box next to the target workstation or a server.
Go to, then select .
In the Wake Up dialog box, specify the following:
Automatically detect the server : Use this option when the ZENworks Primary Server and the target managed device are in the same subnet. In this case, the Primary Server itself acts as the proxy server.
When this option is selected, ZENworks automatically detects the Primary Server closest to the target managed device.
Use the following devices: Use this option when the ZENworks Primary Server and the target managed device are in different subnet. Clickto select a Satellite Server or a managed device as a proxy server that is located in the same subnet of the target managed device.
NOTE:Proxy server should be a managed device or a Satellite Server. The Linux proxy server is supported from 11.2.4 onwards.You can configure more than one proxy server for sending wake-on-LAN magic packets. If one proxy server is not reachable, then the ZENworks Primary server sends magic packets to the next available proxy server.
Clickto specify the IP address of the selected proxy server that is used for sending the magic packets to the target device. Specifying the IP address of a proxy server is required in a context where a particular device acting as a proxy server has more than one IP address.
Automatically detect the IP address: Select this option if you want ZENworks to automatically detect the IP address of the proxy server where the magic packets would be sent to the managed device.
Use the following IP address: After selecting this option, enter the IP address of the proxy server, then click Add to specify the IP address or addresses other than the default.
Number of Retries: The default value is 1. However, you can change it to any number between 0 and 5.
Time interval between Retries: The default value is 2 minutes. However, you can change it to any value between 2 and 10 minutes.
The WOL feature in ZENworks Control Center allows you to perform bundle management operations on powered off devices by waking them up automatically.
To wake up a managed device through bundle distribution:
In ZENworks Control Center, click.
Select the check box next to the required bundle.
Select a target device, then click.
The target device is listed in the Assign Bundle page.
Select the required shortcut location, then click.
Select theon the schedules page.
Clickthen select the check box on the Bundle Distribution Schedule page.
Clickto use a different proxy server. Click to change the default Proxy and IP details.
For details, see Step 4 and Step 5 in Section 4.2, Performing Wake-on-LAN through Bundle Distribution.
ClickThe distribution schedule details are displayed.
After the bundle with distribution schedule is assigned to the managed device with the WOL option configured, the managed device is woken up according to the schedule, and then the bundle is assigned and distributed.
You can perform Wake-on-LAN on workstations and servers through the command line interface:
Waking up a workstation: See ZENworks 11 SP3 Command Line Utilities Reference.
Waking up a server: See ZENworks 11 SP3 Command Line Utilities Reference.
This diagram shows how to use the WOL feature through Quick Task in ZENworks Control Center.
This diagram shows how the actual WOL task is carried out in the background when initiated.
This diagram shows Subnet 1, Subnet 2, Subnet 3, and Subnet 4 respectively. All devices that are located in these four subnets are managed by a ZENworks Primary server located in Subnet 1.
An administrator wants to wake up devices located in Subnet 1. In this case the Primary Server itself acts as a proxy server because the target managed devices and the Primary Server are in the same subnet.
An administrator who wants to wake up devices located in Subnet 1 and Subnet 2 in a single WOL task must specify the following as proxy servers:
A Satellite Server or a managed device that is located in Subnet 2.
A Primary Server or a Satellite Server or a managed device that is located in Subnet 1.
As a result, the target managed devices located in both Subnet 1 and Subnet 2 will get magic packets from those proxy servers that are also located in the subnet of the target devices.
An administrator who wants to wake up only those devices that are located in Subnet 3 must specify a Satellite Server or a managed device as a proxy server that is located in the subnet of the target device.
An administrator who wants to wake up devices located in Subnet 4 and must specify a proxy server that has multiple NICs or IP addresses. Then the WOL task is performed based on one of the following options selected:
Automatically detect the IP address: If the administrator selects this option, then ZENworks wakes up the devices that are reachable and that have IP addresses that match the subnet of the target device.
Use the following IP address: If the administrator selects this option, then ZENworks uses the IP address to wake up the devices that are reachable and that are in the subnet of the target managed device.
WOL is not supported in shutdown mode on a Windows 8 managed device
Open theof the managed device.
Under Power Options, click thelink.
Uncheck the(recommended) check box.
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