Service Provider Bridging | 963Enable Drop EligibilityYou must enable Drop Eligibility globally before you can honor or mark the DEI value.When Drop Eligibility is enabled, DEI mapping or marking takes place according to the defaults. In thiscase, the CFI is affected according to Table 46-3.Honor the Incoming DEI ValueTo honor the incoming DEI value, you must explicitly map the DEI bit to an FTOS drop precedence;precedence can have one of three colors:Task Command Syntax Command ModeMake packets eligible for dropping based on their DEI value. Bydefault, packets are colored green, and DEI is marked 0 on egress.dei enable CONFIGURATIONTable 46-3. Drop Eligibility BehaviorIngress Egress DEI Disabled DEI EnabledNormal Port Normal Port Retain CFI Set CFI to 0Trunk Port Trunk Port Retain inner tag CFI Retain inner tag CFIRetain outer tag CFI Set outer tag CFI to 0Access Port Trunk Port Retain inner tag CFI Retain inner tag CFISet outer tag CFI to 0 Set outer tag CFI to 0Precedence 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 ofcongestion status).Task Command Syntax Command ModeHonor the incoming DEI value by mapping it to anFTOS drop precedence. You may enter thecommand once for 0 and once for 1. Packets with anunmapped DEI value are colored green.dei honor {0 | 1} {green | red | yellow} INTERFACEDisplay the DEI-honoring configuration. show interface dei-honor [interface slot/port | linecard number port-set number]EXEC Privilege
