FYI
2006-02-03, 12:02 PM
http://www.depicus.com/wake-on-lan/what-is-wake-on-lan.aspx
How to calculate the subnet-directed broadcast address
1) Convert machine address to binary e.g. 10.208.20.1 = 00001010.11010000.00010100.00000001
2) Convert the Subnet Mask to Binary e.g. 255.255.240.0 = 11111111.11111111.11110000.00000000
3) Invert the Binary Subnet Mask e.g. 11111111.11111111.11110000.00000000 becomes 00000000.00000000.00001111.11111111
4) Or the machine address and the inverted subnet mask e.g. 00001010.11010000.00010100.00000001 Or 00000000.00000000.00001111.11111111 = 00001010.11010000.00011111.11111111 = 10.208.31.255
How to calculate the subnet-directed broadcast address
1) Convert machine address to binary e.g. 10.208.20.1 = 00001010.11010000.00010100.00000001
2) Convert the Subnet Mask to Binary e.g. 255.255.240.0 = 11111111.11111111.11110000.00000000
3) Invert the Binary Subnet Mask e.g. 11111111.11111111.11110000.00000000 becomes 00000000.00000000.00001111.11111111
4) Or the machine address and the inverted subnet mask e.g. 00001010.11010000.00010100.00000001 Or 00000000.00000000.00001111.11111111 = 00001010.11010000.00011111.11111111 = 10.208.31.255