Text this: Multicast traffic grooming in future internet over optical networks

 ______      ___                 ___     __   __  
|      \\   / _ \\    ____      / _ \\   \ \\/ // 
|  --  //  | / \ ||  |    \\   / //\ \\   \   //  
|  --  \\  | \_/ ||  | [] ||  |  ___  ||  / . \\  
|______//   \___//   |  __//  |_||  |_|| /_//\_\\ 
`------`    `---`    |_|`-`   `-`   `-`  `-`  --` 
                     `-`