it controls

However, with the development of it controls defining the use of the first 6 bits of the IP ToS byte for DiffServ markings (RFC 2474) and the last 2 bits for IP explicit congestion notification (RFC 3168), using the term ToS to refer to only the first 3 bits (the IP Precedence bits) of the IP ToS byte has become increasingly inaccurate

However, marking DLSw+ to an IP Precedence/class selector value could interfere with other QoS Baseline recommended markings. For example, if DLSw+ is marked to IPP 1, it would be treated as Scavenger traffic; if it is marked to IPP 2, it could interfere with Network-Management traffic; if it is marked to IPP 3, it could interfere with Call-Signaling; if it is marked to IPP 4, it would be treated as Streaming-Video traffic; and if it is marked to IPP 6 or 7, it could interfere with routing or it controls