- 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.
- Default
- 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.
- MQC Classification Options
- 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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