• all: enables all DCBx debugging operations.• auto-detect-timer: enables traces for DCBx auto-detect timers.• config-exchng: enables traces for DCBx configuration exchanges.• fail: enables traces for DCBx failures.• mgmt: enables traces for DCBx management frames.• resource: enables traces for DCBx system resource frames.• sem: enables traces for the DCBx state machine.• tlv: enables traces for DCBx TLVs.Verifying the DCB ConfigurationTo display DCB configurations, use the following show commands.Table 20. Displaying DCB ConfigurationsCommand Outputshow qos dot1p-queue mapping Displays the current 802.1p priority-queue mapping.show dcb [stack-unit unit-number] Displays the data center bridging status, number of PFC-enabledports, and number of PFC-enabled queues. On the master switch ina stack, you can specify a stack-unit number. The range is from 0 to5.show qos priority-groups Displays the ETS priority groups configured on the switch, includingthe 802.1p priority classes and ID of each group.show interface port-type pfc {summary | detail} Displays the PFC configuration applied to ingress traffic on aninterface, including priorities and link delay.To clear PFC TLV counters, use the clear pfc countersinterface port-type slot/port command.show interface port-type pfc statistics Displays counters for the PFC frames received and transmitted (bydot1p priority class) on an interface.You can use the show interface pfc statisticscommand even without enabling DCB on the system.show interface port-type ets {summary | detail} Displays the ETS configuration applied to egress traffic on aninterface, including priority groups with priorities and bandwidthallocation.To clear ETS TLV counters, enter the clear ets countersinterface port-type slot/port command.show interface port-type DCBx detail Plays the DCBx configuration on an interface.show stack-unit {0-11 | all} stack ports allpfc detailsDisplays the PFC configuration applied to ingress traffic, includingpriorities and link delay.show stack-unit {0-11 | all} stack ports allets detailsDisplays the ETS configuration applied to ingress traffic on stack-links, including priorities and link delay.Examples of the show CommandsThe following example shows the show dot1p-queue mapping command.Dell(conf)# show qos dot1p-queue-mappingDot1p Priority: 0 1 2 3 4 5 6 7Queue : 0 0 0 1 2 3 3 3Data Center Bridging (DCB) 279
