Forwarding Classes And Plp Levels - Juniper ACX1000 Configuration Manual

Forwarding Classes and PLP Levels

Copyright © 2017, Juniper Networks, Inc.
Table 52: Policer Actions
Policer Marking
Single-rate two-color Green (Conforming)
Red (Nonconforming)
Single-rate Green (Conforming)
three-color
Yellow (Above the CIR
and CBS)
Red (Above the EBS)
Two-rate three-color Green (Conforming)
Yellow (Above the CIR
and CBS)
Red (Above the PIR
and PBS)
A packet's forwarding class assignment and PLP level are used by the Junos OS
class of service (CoS) features. The Junos OS CoS features include a set of mechanisms
that you can use to provide differentiated services when best-effort traffic delivery is
insufficient. For router (and switch) interfaces that carry IPv4, IPv6, and MPLS traffic,
you can configure CoS features to take in a single flow of traffic entering at the edge of
your network and provide different levels of service across the network—internal
forwarding and scheduling (queuing) for output—based on the forwarding class
assignments and PLP levels of the individual packets.
NOTE: Forwarding-class or loss-priority assignments performed by a policer
or a stateless firewall filter override any such assignments performed on the
ingress by the CoS default IP precedence classification at all logical interfaces
or by any configured behavior aggregate (BA) classifier that is explicitly
mapped to a logical interface.
Chapter 27: Configuring Class of Service
Implicit Action Configurable Action
Assign low loss None
priority
None Assign low or high loss
priority, assign a
forwarding class, or
discard
On some platforms,
you can assign
medium-low or
medium-high loss
priority
Assign low loss None
priority
Assign medium-high None
loss priority
Assign high loss Discard
priority
Assign low loss None
priority
Assign medium-high None
loss priority
Assign high loss Discard
priority
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