Juniper JUNOS OS 10.3 - SOFTWARE Manual page 3319

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Documentation
Configuring CoS on MPLS Provider Edge Switch Using Circuit Cross-Connect (CLI
Procedure)
Copyright © 2010, Juniper Networks, Inc.
[edit interfaces]
user@switch# set ge-2/0/3 unit 0 family inet address 121.121.121.1/16 policing filter
myfilter
NOTE: You can also configure schedulers and shapers as needed. See
"Defining CoS Schedulers (CLI Procedure)" on page 3209.
Configuring MPLS on Provider Edge Switches Using Circuit Cross-Connect (CLI
Procedure) on page 3405
Assigning CoS Components to Interfaces (CLI Procedure) on page 3219
Configuring Policers to Control Traffic Rates (CLI Procedure) on page 3073
Understanding the Use of Policers in Firewall Filters on page 3036
You can use class of service (CoS) within MPLS networks to prioritize certain types of
traffic during periods of congestion. This topic describes configuring CoS components
on provider edge (PE) switch that is using MPLS over circuit-cross connect (CCC).
NOTE: If you are using MPLS with CCC, you can use only one type of DSCP/IP
precedence and only one type of IEEE 802.1p on the CCC interfaces.
This procedure creates a custom DSCP classifier and a custom EXP rewrite rule on the
ingress PE. It also enables a policer on the label-switched path (LSP) of the ingress PE
to ensure that the amount of traffic forwarded through the LSP never exceeds the
requested bandwidth allocation.
Import the default DSCP classifier classes to the custom DSCP classifier that you are
1.
creating:
[edit class-of-service]
user@switch#set classifiers dscp dscp1 import default
Add the expedited-forwarding class to this custom DSCP classifier, specifying a loss
2.
priority and code point:
[edit class-of-service]
user@switch#set classifiers dscp dscp1 forwarding-class expedited-forwarding
loss-priority low code-points 000111
Specify the values for the custom EXP rewrite rule,
3.
[edit class-of-service]
user@switch# set rewrite-rules exp e1 forwarding-class expedited-forwarding
loss-priority low code-point 111
Chapter 109: Configuring CoS
:
e1
3223