Dell S4048T, Configuration Manual

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dcb pfc-shared-buffer-size value
dcb pfc-total-buffer-size value
The buffer size range is from 0 to 3399. Default is 3088.
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.
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 profile.
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.
Sample DCB Configuration
The following shows examples of using PFC and ETS to manage your data center traffic.
In the following example:
• Incoming SAN traffic is configured for priority-based flow control.
• Outbound LAN, IPC, and SAN traffic is mapped into three ETS priority groups and configured for
enhanced traffic selection (bandwidth allocation and scheduling).
Data Center Bridging (DCB) 340