Ill try to give you an answer, I hope it explains your question... Well, normally the Class Selector Per Hop behaviour in DiffServ is used for backward compability with Precedence. The Binary Values show the first three bits of the TOS Byte, used for Precedence. The table looks as below:
DSCP CS Value Binary Value Equivalent PrecValue (Decimal) Default 000000 0 CS1 001000 1 CS2 010000 2 CS3 011000 3 CS4 100000 4 CS5 101000 5 CS6 110000 6 CS7 111000 7 The other Diffserv values of the assured PHB, for example AF22, AF33 are not backward compatible to Precedence. regards Roger Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von khalid aljorf Gesendet: Montag, 30. Juni 2008 09:58 An: [email protected] Betreff: [OSL | CCIE_RS] Precedence and DSCP Greetings all, is there any formula that we can use to calculate what each IP precedence value equal in DSCP ( i.e IP precedence 5 = DSCP 40 and IP precedence 4= 32)? regards
