TABLE OF CONTENTS It can be confusing trying to understand how to convert between corresponding IP precedence values, TOS values, and DSCP values, hence this appendix aims to help solve that problem.
The numeric notations most commonly used for IP precedence, TOS and DSCP values are as follows.
IP precedence. The notation normally used when referring to particular IP precedence values is to take the entire value of the precedence field (bits 0 to 2 of the TOS octet) and express it in decimal, where bit 0 is the most significant bit; e.g. an IP prece dence value of 010 binary is represented as Precedence 2.
IP precedence is discussed in detail in Section 2.3.2.1.
Type of service. The notation generally used when referring to the "TOS value" is to take the entire vale of the type of service octet (including the precedence field and bit 7 of the type of service octet) expressed in decimal, where bit 0 is taken as the most significant bit; e.g. assuming a precedence field value of 110 binary, and a TOS field value of 0100 binary, the TOS value would generally be referred to as 212 decimal (i.e. 11010100 binary).
Type of service is discussed in detail in Section 2.3.2.2.
DSCP. When referring to DSCP values, all 6 bits of the DSCP are expressed in decimal, where bit 0 is taken as the most significant bit; e.g. a DSCP of 010000 binary is represented...
