DEI-based marking is supported on access ports, access-uplink ports, and network ports. The DEI bit can be used to mark the packet to carry the profile (which is assigned by an operator’s trusted node on ingress to the carrier 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 port egress on access ports and access-uplink ports
by default, in-profile packets are marked with a DEI bit of 0 and out-of-profile packets are marked with a DEI bit of 1. The user has an option to mark all the packets belonging to an FC with the same DEI value, regardless of its profile, by using the force-de-mark command.
See Network QoS policy command reference and Access egress QoS policy command reference, and see the 7210 SAS-D, Dxp, K 2F1C2T, K 2F6C4T, K 3SFP+ 8C Basic System Configuration Guide for information about the CLI commands for DEI.