Dell PowerEdge FN I/O Module Configuration Guide 9.10(0.0)

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Enabling Drop Eligibility

Enable drop eligibility globally before you can honor or mark the DEI value.

When you enable drop eligibility, DEI mapping or marking takes place according to the defaults. In this case, the CFI is affected according to the following table.

Table 1. Drop Eligibility Behavior
Ingress	Egress	DEI Disabled	DEI Enabled
Normal Port	Normal Port	Retain CFI	Set CFI to 0.
Trunk Port	Trunk Port	Retain inner tag CFI	Retain inner tag CFI.
		Retain outer tag CFI	Set outer tag CFI to 0.
Access Port	Trunk Port	Retain inner tag CFI	Retain inner tag CFI
		Set outer tag CFI to 0	Set outer tag CFI to 0

To enable drop eligibility globally, use the following command.

Make packets eligible for dropping based on their DEI value. CONFIGURATION mode dei enable By default, packets are colored green, and DEI is marked 0 on egress.