Reference Guide
100 | Data Center Bridging
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Command
History
Usage
Information
This command is supported in Programmable-Mux (PMUX) mode only.
If an error occurs in an ETS output-policy configuration, the configuration is ignored and the scheduler
and bandwidth allocation settings are reset to the ETS default values (all priorities are in the same ETS
priority group and bandwidth is allocated equally to each priority).
If an error occurs when a port receives a peer’s ETS configuration, the port’s configuration is reset to
the previously configured ETS output policy. If no ETS output policy was previously applied, the port
is reset to the default ETS parameters.
You can only associate output QoS policy profiles with the priority groups in the DCB output profile
context; output QoS policy profiles are not permitted on output policy-maps.
Weighted random early detection (WRED), Explicit congestion notification (ECN), rate shaping, and
rate limiting are not supported in output policies because DCBx does not negotiate these parameters
with peer devices. You can apply a QoS output policy with WRED and/or rate shaping on a DCBx
CIN-enabled interface (refer to Configuring Port-Based Rate Shaping and Weighted Random Early
Detection).
Related
Commands
• scheduler - schedules the priority traffic in port queues.
• bandwidth-percentage - bandwidth percentage allocated to the priority traffic in port queues.
show dcb
Displays the data center bridging status, the number of PFC-enabled ports, and the number of
PFC-enabled queues.
Syntax
show dcb [stack-unit unit-number]
Parameters
Command Mode
EXEC PRIVILEGE
Command
History
Example
Figure 7-4. show dcb Command Example
Usage
Information
Specify a stack-unit number on the Master switch in a stack.
Version 9.2(0.0) Supported on the M I/O Aggregator
unit number Enter the DCB unit number.
The valid values are 0 to 5.
Version 8.3.17.0 Supported on M I/O Aggregator
FTOS# show dcb
stack-unit 0 port-set 0
DCB Status : Enabled
PFC Port Count : 56 (current), 56 (configured)
PFC Queue Count : 2 (current), 2 (configured)