Service Manual

queue 0 to queue
7
To apply the shared-threshold weight, specify the queue number
number Enter a weight for the queue on the shared buffer as a number in the range of 1 to
11.
Default The default threshold weight on the shared buffer for each queue is 9. Therefore, each queue can
consume up to 66.67 percent of available shared buffer by default.
Command Modes INTERFACE mode
Command
History
Version Description
9.9(0.0) Introduced on the Z9500, S4810, S4820T, S5000, and S4048–ON.
9.7(0.0) Introduced on the S6000-ON.
9.3(0.0) Introduced on the S6000.
Usage
Information
You can configure all the data queues. You can configure queues 0-7.
The following table describes the mapping between the threshold weight of the shared buffer on the
queue. It also shows the percentage of the available shared buffer used by the queues for each of the
corresponding threshold weights of the shared buffer:
shared-
threshold-
weight on the
queue
% of available shared buffer that can be consumed by the
queue
0 No dynamic sharing; shared buffer = 0.
1 0.77%
2 1.54%
3 3.03%
4 5.88%
5 11.11%
6 20%
7 33.33%
8 50%
9 66.67%
10 80%
11 88.89%
Example
Dell(conf-if-te-1/8)#Service-class buffer shared-threshold-weight queue5
4 queue7 6
dcb pfc-queues
Configure the number of PFC queues.
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.
Data Center Bridging (DCB) 481