Table 49. Drop Eligibility BehaviorIngress Egress DEI Disabled DEI EnabledNormal 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 CFISet outer tag CFI to 0 Set outer tag CFI to 0To enable drop eligibility globally, use the following command.• Make packets eligible for dropping based on their DEI value.CONFIGURATION modedei enableBy default, packets are colored green, and DEI is marked 0 on egress.Honoring the Incoming DEI ValueTo honor the incoming DEI value, you must explicitly map the DEI bit to an Dell Networking OS dropprecedence.Precedence can have one of three colors.Precedence DescriptionGreen High-priority packets that are the least preferred to be dropped.Yellow Lower-priority packets that are treated as best-effort.Red Lowest-priority packets that are always dropped (regardless of congestion status).• Honor the incoming DEI value by mapping it to an Dell Networking OS drop precedence.INTERFACE modedei honor {0 | 1} {green | red | yellow}You may enter the command once for 0 and once for 1.Packets with an unmapped DEI value are colored green.Example of Viewing DEI-Honoring ConfigurationTo display the DEI-honoring configuration, use the show interface dei-honor [interface slot/port | linecard number port-set number] in EXEC Privilege mode.Dell#show interface dei-honorDefault Drop precedence: GreenInterface CFI/DEI Drop precedence---------------------------------------Te 1/1 0 GreenTe 1/1 1 YellowTe 2/9 1 RedTe 2/10 0 YellowService Provider Bridging 763
