Administrator Guide

• all: enables all DCBx debugging operations.
• auto-detect-timer: enables traces for DCBx auto-detect timers.
• config-exchng: enables traces for DCBx conguration 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 Conguration
To display DCB congurations, use the following show commands.
Table 20. Displaying DCB Congurations
Command Output
show 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-enabled
ports, and number of PFC-enabled queues. On the master switch in
a stack, you can specify a stack-unit number. The range is from 0 to
5.
show qos priority-groups
Displays the ETS priority groups congured on the switch, including
the 802.1p priority classes and ID of each group.
show interface port-type pfc {summary | detail}
Displays the PFC conguration applied to ingress trac on an
interface, including priorities and link delay.
To clear PFC TLV counters, use the clear pfc counters
interface port-type slot/port command.
show interface port-type pfc statistics
Displays counters for the PFC frames received and transmitted (by
dot1p priority class) on an interface.
You can use the show interface pfc statistics
command even without enabling DCB on the system.
show interface
port-type ets {summary | detail}
Displays the ETS conguration applied to egress trac on an
interface, including priority groups with priorities and bandwidth
allocation.
To clear ETS TLV counters, enter the clear ets counters
interface port-type slot/port command.
show interface port-type DCBx detail
Plays the DCBx conguration on an interface.
show stack-unit {0-11 | all} stack ports all
pfc details
Displays the PFC conguration applied to ingress trac, including
priorities and link delay.
show stack-unit {0-11 | all} stack ports all
ets details
Displays the ETS conguration applied to ingress trac on stack-
links, including priorities and link delay.
Examples of the show Commands
The following example shows the show dot1p-queue mapping command.
Dell(conf)# show qos dot1p-queue-mapping
Dot1p Priority: 0 1 2 3 4 5 6 7
Queue : 0 0 0 1 2 3 3 3
Data Center Bridging (DCB)
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