For MPLS tunnels, if network egress Ethernet ports are used, dot1p bit marking can be enabled in conjunction with EXP bit marking. In this case, the tunnel and pseudowire EXP bits do not have to be the same as the dot1p bits.
For GRE and IP tunnels, dot1p marking and pseudowire EXP marking can be enabled, and DSCP marking can also be enabled.
Network egress dot1p is supported for Ethernet frames, which can carry IPv4, IPv6, or MPLS packets. EXP re-marking is supported for MPLS packets.