in a DCBx TLV from a remote peer but received a different, conflicting DCBx
version.
DSM_DCBx_PFC_PARAMETERS_MATCH and DSM_DCBx_PFC_PARAMETERS_MISMATCH: A local DCBx
port received
a compatible (match) or incompatible (mismatch) PFC configuration from a peer.
DSM_DCBx_ETS_PARAMETERS_MATCH and DSM_DCBx_ETS_PARAMETERS_MISMATCH: A local DCBx
port received
a compatible (match) or incompatible (mismatch) ETS configuration from a peer.
LLDP_UNRECOGNISED_DCBx_TLV_RECEIVED: A local DCBx port received an unrecognized
DCBx TLV from
a peer.
Debugging DCBx on an Interface
To enable DCBx debug traces for all or a specific control paths, use the following command.
• Enable DCBx debugging.
EXEC PRIVILEGE mode
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 21. 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.
Data Center Bridging (DCB) 327
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