This object identifies the local NSAP address. The bytes are mapped as follows: prefix : 13 bytes Cisco ID : 2 bytes Reserved : 2 bytes Slot/Port : 2 bytes[5 bit slot, 11 bits port] Selector : 1 byte. Of the 13 bytes for the node name, only the first 8 bytes are used. If the node name is n (0 < n < 8) bytes long, the node name must be left justified ( Bytes 1 to n contain the node name and bytes (n+1) to 8 must be 0 ). Bytes 9-13 must be always 0.