Owners Manual

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 4000

dcb pfc-total-buffer-size 5000

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 will depend on the buffer. The

default number of PFC queues in the system is two for S4810 and Z9500, and one for S6000

platforms.

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

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 profile on stack ports.

CONFIGURATION mode

Dell(conf)# dcb-policy buffer-threshold stack-unit all stack-ports all dcb-

policy-name

7. Assign the DCB policy to the DCB buffer threshold profile on interfaces. This setting takes

precedence over the default buffer-threshold setting.

INTERFACE mode (conf-if-te)

dcb-policy buffer-threshold buffer-threshold

8. Configuring Global total buffer size on stack ports.

CONFIGURATION mode

dcb pfc-total-buffer-size buffer-size stack-unit all port-set {port-pipe |

all}

Port-set number range is from 0 to 3.

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Data Center Bridging (DCB)