MPLS and DiffServ Label-inferred-CoS LSP

• DSCP to <Label,EXP> mapping:

  • Label conveys queue / scheduling
  • EXP conveys drop priority
  • ATM and frame interfaces withlots of CoS

0 1 2 3

0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1

Label

EXP

S

TTL

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