Users Guide

buer-size Ingress buer size
size Size of the ingress buer in KB. Enter a number in the range of 0 to 7787. The
default is 45 KB.
pause-threshold Buer limit for pause frames to be sent
threshold-value Buer limit at which the port sends the pause to peer in KB. Enter a number in the
range of 0 to 7787. The default is 10 KB.
resume-oset Buer oset limit for resuming in KB
threshold-value Buer oset 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
Buer shared threshold weight
size Weightage of the priorities on the shared buer size in the system. Enter a number
in the range of 0 to 9. The default shared threshold weight is 10.
Default The default size of the ingress buer is 45 KB. The default buer limit at which the port sends the pause to
peer and recommences the sending of packets to the peer is 10 KB. The default threshold weight of the
shared buer space is 10.
Command Modes DCB-BUFFER-THRESHOLD mode
Command History
Version Description
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 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. When PFC detects congestion on a queue for a specied priority, it sends a pause frame for the
802.1p priority trac 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 congure the intended buer conguration for all eight priorities. If you congure the
number of lossless queues as 4 and if the administrator-congured priorities congured within the DCB input
policy is applied, then the conguration 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 eective
for buer conguration. This method of conguration provides an easy and exible technique to
accommodate both administratively-congured and peer-congured priorities.
Example
Dell(conf-dcb-buffer-thr)#priority 0 buffer-size 52 pause-threshold 16
resume-offset 10 shared-threshold-weight 7
532
Data Center Bridging (DCB)