Dcb-Policy Buffer-Threshold (Interface Configuration) - Dell Z9500 Reference Manual

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buffer offset limit for resuming the acceptance of received packets. When PFC

detects congestion on a queue for a specified priority, it sends a pause frame for

the 802.1p priority traffic to the transmitting device.

You can use set up both the administrative and peer-related PFC priorities. For

example, you can configure the intended buffer configuration for all 8 priorities. If

you configure the number of lossless queues as 4 and if the administrator-

configured priorities configured within the DCB input policy is applied, then the

configuration for those priorities are pre-designed. However, if the peer-provided

priorities are applied, although a DCB input policy is present, the peer-provided

priorities become effective for buffer configuration. This method of configuration

provides an easy and flexible technique to accommodate both administratively-

configured and peer-configured priorities.

S4810-YU-MR-Dell(conf)# qos-policy-buffer test

S4810-YU-MR-Dell (conf-qos-policy-buffer)#queue 0 pause no-drop

buffer-size 128000 pause-threshold 103360 resume-threshold

S4810-YU-MR-Dell (conf-qos-policy-buffer)# queue 4 pause no-

drop buffer-size 128000 pause-threshold 103360 resume-threshold

dcb-policy buffer-threshold (Interface Configuration)

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

over the global buffer-threshold setting.

dcb-policy buffer-threshold linecard <0-2/all> port-set <0-3/

all> backplane all <dcb-policy-name>

INTERFACE mode

You can configure up to a maximum of four lossless (PFC) queues. By configuring

four lossless queues, you can configure four different priorities and assign a

particular priority to each application that your network is used to process. For

example, you can assign a higher priority for time-sensitive applications and a

lower priority for other services, such as file transfers. You can configure the

amount of buffer space to be allocated for each priority and the pause or resume

Configure the profile name for the DCB buffer threshold

Introduced on the Z9500.

Data Center Bridging (DCB)