Juniper ACX2000

encode the CoS value of a packet as it traverses an LSP. To configure global EXP bits,
include the exp statement at the [edit class-of-service system-defaults classifiers]
hierarchy level.
To configure CoS on ACX Series routers:
1. Configure the class of service.
[edit]
user@host# edit class-of-service
2. Configure the rewrite rules.
[edit class-of-service]
user@host# edit rewrite-rules (dscp | inet-precedence) rewrite-name
user@host# edit forwarding-class class-name
user@host# set loss-priority low class-name code-points (alias | bits)
3. Configure behavior aggregate classifiers for DiffServ CoS.
[edit class-of-service]
user@host# edit classifiers (dscp | inet-precedence) classifier-name
user@host# edit forwarding-classes class-name
user@host# set loss-priority class-name code-points (alias | bits)
4. Configure expedited forwarding class classifiers.
[edit class-of-service classifiers]
user@host# edit forwarding-classes class-name
user@host# set loss-priority class-name code-points (alias | bits)
5. Define the forwarding-class mappings.
[edit class-of-service]
user@host# edit forwarding-classes class queue-number queue-number
6. Configure network control forwarding class classifiers.
[edit class-of-service]
user@host# edit forwarding-class class-name
user@host# set loss-priority low class-name code-points (alias | bits)
7. Apply the rewrite rules and classifiers to the interfaces.
[edit class-of-service interface interface-name unit unit-number]
user@host# set rewrite-rule (dscp | inet-precedence ) (rewrite-name| default)
user@host# set classifiers (dscp | inet-precedence ) classifier-name | default)
8. Set the global system default.
[edit ]
user@host# edit class-of-service system-defaults classifiers exp classifier-name
867Copyright © 2017, Juniper Networks, Inc.
Chapter 27: Configuring Class of Service