This node is a list of ports activated in vectoring mode in the entire subrack. In the reported port list, first two bytes represent the number of boards that support port activation in vectoring mode. The format of each board is as follows: Two bytes represent the subrack ID. Two bytes represent the slot ID. 16 bytes represent all port IDs of the entire board in format of bit mask. Port IDs are in ascending order from left to right. When the bit is 1, the port is activated in vectoring mode. When the bit is 0, the port is activated in non-vectoring modes.