Deployment Guide

debug DCBx {all | auto-detect-timer | config-exchng | fail | mgmt | resource | sem | tlv}
○ 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 Configuration
To display DCB configurations, use the following show commands.
Table 23. Displaying DCB Configurations
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 configured on the switch,
including the 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 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 configuration applied to egress traffic 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 configuration on an interface.
show stack-unit {0-11 | all} stack ports all
pfc details
Displays the PFC configuration applied to ingress traffic,
including priorities and link delay.
show stack-unit {0-11 | all} stack ports all
ets details
Displays the ETS configuration applied to ingress traffic on
stack-links, including priorities and link delay.
266 Data Center Bridging (DCB)