Install Guide

Table Of Contents
dcb pfc-total-buffer-size value
Add dcb pfc-headroom-buffer-size value
The buffer size range is from 0 to 4727. The Default value for PFC total buffer is 2656 KB and that of PFC shared buffer
and headroom buffer is 1040 KB.
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 pause-threshold 16 resume-offset 10 shared-threshold-weight 7
6. Assign the DCB policy to the DCB buffer threshold profile on interfaces. This setting takes precedence over the default
buffer-threshold setting.
INTERFACE mode
dcb-policy buffer-threshold dcb-buffer-threshold
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).
● One lossless queue is used.
Data Center Bridging (DCB)
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