Juniper EX9200 Series, Features Manual

Page: 157 / 278

2.
Configure packet scheduling on logical interface
ge-1/3/1.0
.
a. Configure schedulers that specify the percentage of transmission capacity.
[edit class-of-service]
user@host#
edit schedulers
[edit class-of-service schedulers]
user@host#
set be transmit-rate percent 5
user@host# set ef transmit-rate percent 30
user@host# set af transmit-rate percent 30
user@host# set nc transmit-rate percent 35
A percentage of zero drops all packets in the queue. When the rate-limit option
is specified, the transmission rate is limited to the rate-controlled amount. In
contrast with the
exact option, a scheduler with the rate-limit option shares
unused bandwidth above the rate-controlled amount.
b. Configure a scheduler map to associate each scheduler with a forwarding class.
[edit class-of-service]
user@host#
edit scheduler-maps my-map
[edit class-of-service scheduler-maps my-map]
user@host#
set forwarding-class best-effort scheduler be
user@host# set forwarding-class expedited-forwarding scheduler ef
user@host# set forwarding-class network-control scheduler nc
user@host# set forwarding-class assured-forwarding scheduler af
c. Associate the scheduler map with logical interface
ge-1/3/1.0
.
[edit class-of-service]
user@host#
edit interfaces ge-1/3/1 unit 1
[edit class-of-service interfaces ge-1/3/1 unit 1]
user@host#
set scheduler-map my-map
3.
Configure 100 Mbps of traffic rate-shaping overhead on logical interface
ge-1/3/1.1
.
[edit class-of-service interfaces ge-1/3/1 unit 1]
user@host#
set shaping-rate 100
Alternatively, you can configure a shaping rate for a logical interface and
oversubscribe the physical interface by including the
shaping-rate
statement at the
[edit class-of-service traffic-control-profiles]
hierarchy level. With this configuration
approach, you can independently control the delay-buffer rate.
Results Confirm the configuration of the class-of-service features (including the 100 Mbp of
shaping of the egress traffic) by entering the
show class-of-service configuration mode
command. If the command output does not display the intended configuration, repeat
the instructions in this procedure to correct the configuration.
[edit]
user@host#
show class-of-service
interfaces {
ge-1/3/1 {
unit 1 {
139 Copyright © 2016, Juniper Networks, Inc.
Chapter 12: Policer Overhead to Account for Rate Shaping in the Traffic Manager