Users Guide

validation is performed to determine whether following condition is satised: If the shared buer size is more
than the total PFC buer size value, the conguration is not saved and a system logging message is
generated as follows:
Shared-pfc-buer-size <= (Total-pfc-buer-size — Σpfc priority <> buer-size on each port, priority).
Dell(conf)#dcb pfc-shared-buffer-size 2000 %ERROR: pfc shared buffer size
configured cannot accommodate existing buffer requirement in the system.
Enter a smaller value for the shared buer size or increase the total buer size appropriately by using the
dcb pfc-total- buffer-size command.
Example
Dell(conf)#dcb pfc-shared-buffer-size 5000
dcb-buer-threshold
Congure the prole name for the DCB buer threshold.
Syntax
dcb buffer—threshold
Parameters
prole-name Enter the name of the prole, which can be a string of up to 32 characters in
length.
Default None
Command Modes CONFIGURATION mode
Command History
Version Description
9.8(0.0) Introduced on the S4048-ON.
9.7(0.0) Introduced on the S6000-ON and Z9500.
9.6(0.0) Introduced on the S5000.
9.3(0.0) Introduced on the S4810, S4820T, and S6000.
Usage Information When you enter the prole name, you enter the DCB buer threshold conguration mode. You can specify
the shared buer threshold limit, the ingress buer size, buer limit for pausing the acceptance of packets,
and the buer oset limit for resuming the acceptance of received packets.
Example
S4810-YU-MR-Dell(conf)#dcb buffer—threshold test
Example of
commands in dcb
buffer—
threshold mode
qos-policy-buffer queue queue-num pause no-drop queue buffer-size size
pause-threshold threshold-value resume-offset threshold-value shared-
threshold-weight size
Dell(conf)# qos-policy-buffer test
Dell(conf-qos-policy-buffer)#queue 0 pause no-drop buffer-size
128000 pause-threshold 103360 resume-threshold 83520
Dell(conf-qos-policy-buffer)# queue 4 pause no-drop buffer-size
128000 pause-threshold 103360 resume-threshold 83520
582
Data Center Bridging (DCB)