The following are configuration guidelines for DEI-based classification and marking:
While disabling DEI-based classification on a port, all the meters used by the SAPs configured on this port must be in color-blind mode. The converse is also true; that is, while attaching a SAP ingress QoS policy with meter as color-aware to a SAP, the DEI-based classification must have been enabled on the port on which SAP exists.
While configuring DEI-based classification in a network port ingress policy, only Dot1p classification can be used.
DEI classification must be disabled on that port before changing the mode from one mode (access/network/hybrid) to another mode.
All the ports under a LAG should have the same configuration for DEI classification (enable/disable). If the LAG configuration changes, the port configuration also will be updated accordingly. Port configuration under the LAG cannot be changed.
While enabling DEI-based policing on a port, if it is a hybrid port, then the network port ingress QoS policy must use only Dot1p mappings for classification and all the configured profiles must be use-dei (not in or out). This is true even if only SAPs are configured on the port.
Only after attaching a network port ingress QoS policy as mentioned above, can users enable DEI classification on a port.
For more information about DEI classification on a LAG and port, see the 7210 SAS-Mxp, R6, R12, S, Sx, T Interface Configuration Guide.
While configuring the profile on a network port policy for Dot1p classification, if the policy is attached to a hybrid port on which DEI classification is enabled, the profile cannot be changed to in or out. In other words, only DEI bits can be used for profile configuration.
While attaching a network QoS policy to a hybrid port, all the Dot1p mappings including the default mapping should use only the DEI as profile, if DEI classification is enabled on this port.
DEI-based classification cannot be configured for IP interfaces.
Only MPLS EXP-based classification is available for IP interfaces.