Service Manual

5 No - - - -
6 No - - - -
7 No - - - -
- Denotes dynamic buffering is enabled in respective queues
On interface in which PFC is not enabled:
Dell#show interface tengigabitethernet 1/20/1 pfc buffer-threshold
The following table describes the output elds 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 buer
threshold is congured
buer-size Ingress buer size
pause-threshold-value Buer limit at which the port sends the pause to peer in KB.
resume-threshold-value Buer oset limit at which the port resumes the peer in KB.
shared threshold weight Weightage of the priorities on the shared buer size in the
system.
dcb pfc-queues
Congure the number of PFC queues. This utility is supported on the and 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 congured will depend on the buer.
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 Description
9.7(0.0) Introduced on the S6000-ON.
9.3(0.0) Introduced on the S4810 and S6000 platforms.
Usage Information You can congure up to a maximum of four lossless (PFC) queues. By conguring four lossless queues, you
can congure four dierent 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 le transfers. You can congure the amount of buer space to be
allocated for each priority and the pause or resume thresholds for the buer. This method of conguration
enables you to eectively manage and administer the behavior of lossless queues.
Example
Dell(conf)#dcb pfc-queues 4
Data Center Bridging (DCB)
441