Configuring The Dynamic Buffer Method - Dell Z9500 Configuration Manual

dot1p Value in Egress Queue Assignment
the Incoming
Frame
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1 0
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Configuring the Dynamic Buffer Method

Priority-based flow control using dynamic buffer spaces is supported on the switch.
To configure the dynamic buffer capability, perform the following steps:
1 Enable the DCB application. By default, DCB is enabled and link-level flow control is disabled on all interfaces.
CONFIGURATION mode
dcb enable
2 Configure the shared PFC buffer size and the total buffer size. A maximum of 4 lossless queues are supported.
CONFIGURATION mode
dcb pfc-shared-buffer-size value
dcb pfc-total-buffer-size value
The buffer size range is from 0 to 3399. Default is 3088.
NOTE: For dcb pfc-shared-buffer-size, the range is from <0-11210> in KB (default LC=2496/SFM=3328)
For dcb pfc-total-buffer-size, the range is from <0-11210> in KB(default LC=7488/SFM=7596)
3 Configure the number of PFC queues.
CONFIGURATION mode
dcb enable pfc-queues pfc-queues
The number of ports supported based on lossless queues configured depends on the buffer. The default number of PFC
queues in the system is two.
For each priority, you can specify the shared buffer threshold limit, the ingress buffer size, buffer limit for pausing the
acceptance of packets, and the buffer offset limit for resuming the acceptance of received packets.
4 Configure the profile name for the DCB buffer threshold
CONFIGURATION mode
dcb-buffer-threshold dcb-buffer-threshold
5
DCB-BUFFER-THRESHOLD mode
priority 0 buffer-size 52 pause-threshold 16 resume-offset 10 shared-threshold-weight 7
6 Assign the DCB policy to the DCB buffer threshold profileon backplane.
Data Center Bridging (DCB) 267