• Processing of Hierarchical Policers on page 928
• Actions Performed for Hierarchical Policers on page 929
• Configuring Aggregate Parent and Child Policers on ACX Series Routers on page 931
Processing of Hierarchical Policers
Hierarchical policer provisions a controlled sharing of an aggregate among micro-flows.
For example, a hierarchical policer is used to share the bandwidth of a certain subscriber
or user across different CoS settings of that user. Assume that the user is configured to
connect using a logical interface, and the CoS functionality is configured using DiffServ
code point (DSCP) in the traversed packet. The user is assigned an aggregate bandwidth
of 140 Mbps. This consolidated bandwidth must be distributed and shared amongst the
four supported CoS settings represented by DSCP values of 11, 12, 21, and 22 respectively
in the order of 50 Mbps, 40 Mbps, 30 Mbps and 20 Mbps. To obtain this behavior, you
must perform the following configurations:
•
Configure micro-flows--A micro-flow is characterized by all packets that pass through
the same micro policer (or child policer) instance. To enable this configuration, packets
must be classified as micro-flows by using filters to match the packets, and the action
of the filter to refer to the macro policer. You can group and combine packets matching
multiple different filters or terms into a single micro-flow by specifying the same policer
instance across the different filters and terms. These settings are identical to the
configuration required to associate a single-level policer with a filter.
•
Assign child policers to the aggregate policer--This step is additional, from the procedure
to create a single-level policer, to configure a hierarchical policer. You must link or
associate the child policers to the parent or aggregate policer. You can perform this
linking by specifying at each child policer by using the aggregate-policing
aggregate-policer-name statement at the [edit firewall policer policer-name] hierarchy
level.
NOTE: Hierarchical policer is not applicable on ACX5048 and ACX5096
routers.
Related
Documentation
Hierarchical Policers on ACX Series Routers Overview on page 920•
• Guidelines for Configuring Hierarchical Policers on ACX Routers on page 921
• Hierarchical Policer Modes on page 923
• Actions Performed for Hierarchical Policers on page 929
• Configuring Aggregate Parent and Child Policers on ACX Series Routers on page 931
Copyright © 2017, Juniper Networks, Inc.928
ACX Series Universal Access Router Configuration Guide
To Next Page
Loading...
Need help?
General
