2.2.2 User Priority Mapping Considerations

(1) Target of user priority mapping

When a Switch performs Layer 3 forwarding, user priority mapping is in effect for frames that have two or fewer VLAN tags. If a frame that has three or more VLANs tag is received, the frame is discarded. The following figure shows the VLAN tag to which user priority mapping applies.

Figure 2-3: Locations subject to user priority mapping