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[/subport] |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 YellowMarking Egress Packets with a DEI ValueOn egress, you can set the DEI value according to a different mapping than ingress.For ingress information, refer to Honoring the Incoming DEI Value.To mark egress packets, use the following command.• Set the DEI value on egress according to the color currently assigned to the packet.INTERFACE modedei mark {green | yellow} {0 | 1}Example of Viewing DEI-Marking ConfigurationTo display the DEI-marking configuration, use the show interface dei-mark [interface slot/port[/subport] |linecard number port-set number] in EXEC Privilege mode.Dell#show interface dei-markDefault CFI/DEI Marking: 0Interface Drop precedence CFI/DEI--------------------------------Te 1/1 Green 0Te 1/1 Yellow 1Te 2/9 Yellow 0Te 2/10 Yellow 0Dynamic Mode CoS for VLAN StackingOne of the ways to ensure quality of service for customer VLAN-tagged frames is to use the 802.1p priority bits in the tag to indicatethe level of QoS desired.When an S-Tag is added to incoming customer frames, the 802.1p bits on the S-Tag may be configured statically for each customeror derived from the C-Tag using Dynamic Mode CoS. Dynamic Mode CoS maps the C-Tag 802.1p value to a S-Tag 802.1p value.Service Provider Bridging 781