Dcb-Policy Buffer-Threshold (Interface Configuration) - Dell S4810 Reference Manual

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Version 9.3(0.0)

You must apply this buffer policy at the interface level for the attributes to be

applicable in conjunction with the DCB input policy.

For each QoS policy buffer, 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. 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. This utility is supported on the S4810 platform.

dcb-policy buffer-threshold profile-name

profile-name

Introduced on the S4810, S4820T, S6000, and MXL

Configure the profile name for the DCB buffer threshold

Enter the name of the profile, which can be a string of up to

32 characters in length.

Data Center Bridging (DCB)

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