Service Manual

Version Description
9.3(0.0) Introduced on the S6000 platform.
Usage Information The following table describes the output elds displayed for the show command:
Field Description
Name Name of the DCB buer threshold prole
Buer threshold parameters Buer size allocated for the PFC priority queue and
the priority of the queue
Example
Dell#show qos dcb buffer-threshold
Name : test1
Buffer threshold parameters:
pfc priority 0 buffer-size 40
pfc priority 3 buffer-size 50
dcb pfc-total-buer-size
Congure the total buer size for PFC in kilobytes. This utility is supported on the S6000 platform.
Syntax
dcb pfc-total—buffer—size KB
Parameters
KB Enter a number in the range of 0 to 7787.
Default The default is 1 KB for S6000 platforms.
Command Modes CONFIGURATION mode
Command History
Version Description
9.7(0.0) Introduced on the S6000-ON.
9.3(0.0) Introduced on the S6000 platform.
Usage Information Congure the maximum buer available for PFC trac. You can choose to increase or decrease the buer
size that is currently allocated in the system by default. However, if you modify the PFC buer size to be
lower than the previously congured PFC buer size, the system determines whether this reduction in size
is valid without disrupting the existing conguration. In such a scenario, you must disable and re-enable DCB.
For example, if you modify the total buer size to be 4000 KB from the previous size of 5000 KB, an error
message is displayed that this reduction cannot be performed owing to existing system conguration
because of queues that are being currently processed.
The lossless queue limit per port is validated based on the dcb pfc-queues command. PFC queue
conguration identies the maximum number of queues a port can support. Although the queue limit per
port is a baseline when dynamic buering is enabled, the limit per port for queues depends on the availability
of the buer.
Data Center Bridging (DCB)
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