Addendum

- -
- Denotes dynamic buffering is enabled in respective queues
On interface in which PFC is not enabled:
FTOS#show interface tengigabitethernet 0/20 pfc buffer-
threshold
The following table describes the output fields displayed for the show interface
pfc buffer-threshold command:
Field Description
queue Number of the queue
lossless Whether the queue is a lossy or lossless
queue for which buffer threshold is
configured
buffer-size Ingress buffer size
pause-threshold-value Buffer limit at which the port sends the
pause to peer in KB.
resume-threshold-value Buffer offset limit at which the port
resumes the peer in KB.
shared threshold weight Weightage of the priorities on the
shared buffer size in the system.
dcb pfc-queues
Configure the number of PFC queues. This utility is supported on the S4810 and S6000 platforms.
Syntax
dcb pfc-queues value
Parameters
value Enter the number of PFC queues in the range of 0 through 4.
The number of ports supported based on lossless queues
configured will depend on the buffer.
Default The default number of PFC queues in the system is 2 for S4810 and 1 for S6000
platforms.
Command
Modes
CONFIGURATION mode
Command
History
Version 9.3.0.0 Introduced on the S4810 and S6000 platforms
Usage
Information
You can configure up to a maximum of 4 lossless (PFC) queues. By configuring 4
lossless queues, you can configure 4 different priorities and assign a particular
priority to each application that your network is used to process. For example, you
can assign a higher priority for time-sensitive applications and a lower priority for
other services, such as file transfers. You can configure the amount of buffer space
to be allocated for each priority and the pause or resume thresholds for the buffer.
Data Center Bridging (DCB)
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