The DameWare NT Utilities Wake On LAN View has two separate panes. The upper pane will contain information on the selected machines to awaken individually. To request a Batch "wake up call", highlight the machines to awaken in the upper pane and select the Wake Batch… option from the Wake On LAN menu item. The user can choose to Ping after wake. Note: The results will be returned to the bottom pane in the window view.
DameWare NT Utilities Wake On LAN (WOL) uses the Magic Packet™ technology designed by AMD®.
Magic Packet™ requires the knowledge of the host Media Access Control (MAC) address. To help compile a list of MAC addresses, we have implemented the function ’r;Discover’ which discovers the local subnet addresses. This function does not distinguish between printers and routers from workstations. Since any host beyond the local area does not appear in the local machine’s Address Resolution Protocol (ARP) cache, the Discover function can only create a list of hosts in a local network. Working in conjunction with other network management applications allows this utility to obtain a table of IP and Ethernet addresses from these applications. The System Administrator should review the contents of the file to ensure proper format.
To aid in discovering other subnets, you can utilize the console application, DWMacDis.exe, which is located in the installation folder of DNTU. You can either physically visit each subnet to discover the MAC addresses or you can use DNTU’s Remote Command or Remote Control-- copy the DWMacDis.exe to a machine on the specific subnet and then remotely run DWMacDis.exe. Then copy the output file back to the local machine.
The Wake On LAN function can be invoked by selecting the Wake On LAN item from the Tools Menu. The user is then presented with the following options.
Wake Single… Upon selection, displays a dialog box allowing the user to enter the IP Address or Host Name to be wakened, Destination MAC Address and the Port and No. of Packets.
Wake Batch… Upon selection, displays a dialog box allowing the user to enable/disable the Ping after Wake function for the selected machines to be wakened.
Discover… Upon selection of this function, DameWare NT Utilities executes the retrieval of all MAC addresses of the machines on the local subnet and returns those addresses to the file. The user will be given the choice to check or uncheck the ’r;Add to current list.’ Option. When unchecked and upon selection of the Discover button, a Save As dialog box will appear prompting the user to indicate where the file is be to saved. The ’r;Update duplicates’ option in the Discover dialog box will instruct the process to update all duplicate machines.
Add… Adds a machine to the current list. When selected, displays a dialog box in which the user may enter the IP Address or Host Name and MAC address of the machine to be added. The Lookup MAC option is available from here, however it will look up MAC addresses of machines on the local subnet only.
Delete Deletes selected entry or entries from the current list.
Properties… Upon selection, displays a dialog in which the user may view and/or edit the selected entry’s properties.
The following is the format of the list file that is created by this utility.
#IP ADDRESS HOST NAME ETHERNET ADDRESS
22.214.171.124 domainname.domain.com 08-00-20-73-43-4f #Comment
126.96.36.199 cc1.domain.com 00-80-5f-88-56-0a
The default extension for the list file is .dwmp. (This ’r;Wake On LAN list.dwmp’ file is dynamically created by DameWare NT Utilities WOL).
Note: The IP Broadcast Address is used to send a Magic Packet to one host on the network. The default destination IP Broadcast Address is: 255.255.255.255 . This is the ’r;limited broadcast’ and the user may have to indicate a more specific broadcast address. For example: 188.8.131.52 to reach all machines on the 192.192.110.x subnet. A default Ethernet address is shown to let the user know the format of the address. For the program to correctly generate a Magic Packet, the Ethernet address must be specified.