# IEEE-802.1p/Q: Redefining Ethernet

- ## IEEE 802.1Q/p:

  - 802.1Q
    - VLAN standardization, including tagging formats and management
  - 802.1p
    - CoS definitions at Layer 2
    - Dynamic configuration / distribution protocol (GARP)
    - 8 priority levels
    - Multiple hardware queues required per port

- ## Customer Benefits

  - High-priority queuing for business critical traffic
  - GMRP minimizes flooding of multicast traffic

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