Service Manual

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.

CONFIGURATION mode

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

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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