Assigning a DSCP policy for a global source-VLAN-ID QoS

This global QoS packet-marking option assigns a previously configured DSCP policy (codepoint and 802.1p priority) to IP packets received from the specified VLAN-ID (VID). The switch:

  1. Selects an incoming IP packet on the basis of the VLAN-ID it carries.
  2. Overwrites the packet's DSCP with the DSCP configured for matching packets.
  3. Assigns the 802.1p priority associated with the new DSCP.
  4. Forwards the packet through the appropriate outbound port queue.