DEI-based marking is supported on access ports, access-uplink ports, network ports, and hybrid ports. DEI bits can be used to mark the packet to carry the profile, assigned by an operator’s trusted node at the ingress to the carrier’s network, to the subsequent nodes in the network. It allows high-priority in-profile packet to be allocated appropriate resources by all the network nodes on the path to the final destination. Similarly, it allows out-of-profile packets to be treated with less preference compared to in-profile packets by all the network nodes on the path to the final destination. The egress marking behavior must be symmetric to the ingress classification behavior.
The following support is available for DEI-based marking:
Option to mark DEI bits for access SAP egress on access ports, network ports, and hybrid ports on 7210 SAS devices configured in network mode.
Option to mark DEI bits for port egress on access ports and access-uplink ports on 7210 SAS devices configured in access-uplink mode.
Option to mark DEI bits for IP and MPLS packets on network ports (DEI marking is supported for MPLS packets only on those platforms that support dot1p marking for MPLS packets. DEI marking is not supported otherwise).
By default, in-profile packets are marked with DEI bit = 0 and out-of-profile packets are marked with DEI bit = 1. The user has an option to mark all the packets belonging to a FC to the same DEI value irrespective of its profile using the force de-mark command.
For information about the commands for configuring DEI, see Network QoS policies, Network queue QoS policy command reference, Access egress QoS policies on 7210 SAS-T, 7210 SAS-Sx/S 1/10GE, and 7210 SAS-Sx 10/100GE, Access egress QoS policies for 7210 SAS-Mxp, 7210 SAS-R6, and 7210 SAS-R12, Access egress QoS policy command reference, and the 7210 SAS-Mxp, R6, R12, S, Sx, T Basic System Configuration Guide.