Reference Guide

threshold-value Buffer offset limit at which the port resumes the peer in KB. Enter a number in the
range of 1 to 7787. The default is 10 KB.
shared-
threshold-weight
Buffer shared threshold weight
size Weightage of the priorities on the shared buffer size in the system. Enter a number
in the range of 0 to 9. The default shared threshold weight is 10.
Command Modes DCB-BUFFER-THRESHOLD mode
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
EMC Networking OS Command Line Reference Guide.
Version Description
9.11(2.0P0) Default values of buffer threshold profile parameters are changed for the Z9100-
ON and S6100-ON.
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S6100.
9.8(1.0) Introduced on the Z9100–ON.
9.8(0.0) Introduced on the S3048-ON and S4048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.3(0.0) Introduced on the S4810, S4820T, and S6000 platforms.
Usage
Information
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. 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 the priority command to set up both the administrative and peer-related PFC priorities.
For example, you can configure the intended buffer configuration for all eight 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.
Example
DellEMC(conf-dcb-buffer-thr)# priority 0 buffer-size 52 pause-threshold 16
resume-offset 10 shared-threshold-weight 7
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.
Syntax
dcb-policy buffer-threshold profile-name
Parameters
buffer-threshold Configure the profile name for the DCB buffer threshold
profile-name Enter the name of the profile, which can be a string of up to 32 characters in
length.
Default None
Command Modes INTERFACE mode
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
EMC Networking OS Command Line Reference Guide.
Data Center Bridging (DCB) 483