Applicable to all units. Disable/Enable IP ToS prioritization and choose the interpretation of the IP ToS field from IP header. ipPrecedence(2): The IP ToS field is defined by RFC791. In this case the prioritization will be done using the Precedence sub-field of IP ToS. This sub-field has 3 bits, so it can be between 0 and 7. dSCP(3): The IP ToS field is defined by RFC2474. In this case the prioritization will be done using the DSCP sub-field. The size of the sub-field is 6 bits, so the range is 0 to 63.