• Layer 2 Markings
    • Frame-Relay DE bit (1 bit)
    • MPLS EXP bits (3 bits)
    • 802.1Q CoS bits (3 bits)
  • IPv4 and IPv6 ToS Byte
    • IP precedence (3 bits)
    • DSCP (6 bits)
  • IP Precedence
    • 7 – Network
    • 6 – Internet
    • 5 – Critical
    • 4 – Flash-Override
    • 3 – Flash
    • 2 – Immediate
    • 1 – Priority
    • 0 – Routine
  • DSCP
    • Default
      • Best Effort
      • DSCP value 0
    • Expedited Forwarding (EF)
      • Priority
      • DSCP Value 46
    • Assured Forwarding (AF)
      • Bandwidth Guaranteed
      • Four Classes
        • AFxy where x = 1-4
        • Higher is more preferred
      • Three drop precedences
        • AFxy where y = 1-3
        • Higher means higher drop precedence
      • DSCP value (xxxyy0)
    • Class Selectors
      • Backwards compatible with IP Precedence
    • Seven classes
      • CSx where x = 1-7
      • Higher is more preferred.
  • Configuring Classification
    • MQC Classification Options
      • Match any vs. match all
      • Access-lists
      • DSCP/IP Precedence
      • NBAR
      • Source Interface
      • Source/Destination MAC address
    • Can combine multiple matches in one class.
  • Configuring Marking
    • Marking can be configured both input and output.
    • Specifically implemented with:
      • MQC/HQF policy
      • Legacy rate-limit (policer)
      • PBR

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