Users Guide

Version Description
9.3(0.0) Added support for committed rate and committed burst size,
and for configuration of rate limits on the S6000 platform.
Usage Information
If you specify the pps keyword after the rate-shape command, the peak rate, peak
burst, committed rate and committed burst are all considered to be values as a
measure of packets. If you do not specify the pps or kbps keyword, the peak and
committed rate settings are considered to be values in Mbps. Similarly, if you enter the
kbps keyword, the peak and committed rate settings are treated as values in Kbps.
You cannot configure the committed rate settings to use a different metric or unit from
the metric that is set for peak rate attributes because when you use the rate-shape
kbps
command, it denotes the metric for peak and committed rate attributes).
Similarly, if you use the rate-shape pps option , it denotes the metric for peak rate
and committed rate attributes.
If you attempt to define the committed rate to be less than the peak rate, an error
message is displayed stating that the peak rate cannot be lower than the committed
rate. You can configure all the rate shaping parameters to be either in bytes or packets
measure for each queue. The rate and burst parameters for both minimum and
maximum settings for a queue can be either in packets or bytes. You cannot configure
some of rate shaping attributes to be in bytes measure and the remaining rate shaping
attributes to be in packets measure; all the rate shaping attributes must contain the
same metric or unit of measure.
Example
Dell (conf-qos-policy-out) #rate-shape pps 100 100 peak pps 1000
200
Dell (conf-qos-policy-out) #rate-shape kbps 1024 100 peak kbps
102400 75
Dell (conf-qos-policy-out) # rate-shape 100 100 peak 1000 750
Dell(conf-qos-policy-in)#rate-police 100 25 peak 80 500
% Error: Peak rate cannot be less than committed rate.
service-pool wred
A global buffer pool that is a shared buffer pool accessed by multiple queues when the minimum guaranteed
buffers for the queue are consumed can be configured on the S6000 and Z9000 platforms.
Create a global buffer pool that is a shared buffer pool accessed by multiple queues when the minimum
guaranteed buffers for the queue are consumed. S4810, S4820T, S6000, and Z9000 platforms support four
global service-pools in the egress direction. Two service pools are used—one for lossy queues and the other
for lossless (priority-based flow control (PFC)) queues. You can enable WRED and ECN configuration on the
global service-pools. You can define WRED profiles and weight on each of the global service-pools for both
lossy and lossless (PFC) service-pools.
Quality of Service (QoS) 1475