A Transparent Port UNI port is normally configured as a Layer 2 trusted port. The T-UNI port honors incoming customer 802.1p bits and derives an internal QoS level. The 802.1p bit marking of the Backbone VLAN (BVLAN) is derived from the internal QoS level. If the T-UNI port is set as a Layer 2 untrusted port, a best-effort queue is assigned. Customer packet headers are not modified.
The T-UNI port QoS configurations are:
DiffServ = disable
Layer3Trusted = access (for EDM configuration)
access-diffserv enable (for CLI configuration)
You cannot configure access-diffserv and enable diffserv on a T-UNI port.
When a port is associated with a T-UNI ISID, the T-UNI QoS configuration automatically takes effect.
When the port is removed from the T-UNI ISID, the default port QoS configuration takes effect.
When an MLT, static or LACP, is added to a T-UNI ISID, the T-UNI QoS configuration take effect on all the ports of the MLT.
When an MLT, static or LACP, is removed from a T-UNI ISID, the port default QoS configuration is configured on all the member ports of the MLT.
If a port is added dynamically to a T-UNI MLT, static or LACP, the port inherits the QoS properties of the T-UNI MLT ports.
If a port is dynamically removed from a T-UNI MLT, static or LACP, the port retains the QoS configuration inherited from the MLT.