Dell C9000 series, Reference Manual

Page: 1790 / 2286

Usage Information To honor all incoming 802.1p markings on incoming switched traffic on the interface,
enter this command. By default, this facility is not enabled (that is, the 802.1p markings
on incoming traffic are not honored).
You can apply this command on both physical interfaces and port channels. When you
set the service-class dynamic for a port channel, the physical interfaces assigned to the
port channel are automatically configured; you cannot assign the
service-class
dynamic
command to individual interfaces in a port channel.
• All dot1p traffic is mapped to Queue 0 unless you enable the
service-class
dynamic dot1p
command on an interface or globally.
• Layer 2 or Layer 3 service policies supersede dot1p service classes.
Use this command in Configuration Terminal Batch mode to honor the incoming
802.1p markings in a dual-homing setup.
service-class wred backplane
After you create a WRED profile with ECN functionality, specify per-queue granularity for backplane ports and
include the WRED profile in a service class. Using this command, you can enable or disable queue-specific
settings and specify minimum and maximum buffer thresholds in the WRED profile applied to each packet
color-code. Also, you can specify the maximum drop rate percentage for yellow and green profiles. The per-
queue profile configured is applied to all the backplane ports.
C9000 Series
Syntax
[no] service-class wred {green | weight | yellow} {[queue0 number/
string ] || [queue1 number/string ] || [queue2 number/string ] ||
[queue3 number/string ] || [queue4 number/string ] || [queue5
number/string ] || [queue6 number/string ] || [queue7 number/
string ]} backplane
Parameters
service-class Define the mapping between the service class and policy-based
QoS or routing.
wred Specify WRED curve parameters for a queue
green Specify green (low) drop precedence to a queue.
weight Specify a weight factor to a queue.
yellow Specify yellow (medium) drop precedence to a queue.
queue 0 to queue
7 Specify the queue number to which the WRED parameters
apply.
number Enter a weight for the queue as a number in the range of 1 to 15.
This parameter applies only if you specify the green or yellow
drop precedence.
Quality of Service (QoS) 1790