Policer - Dell PowerConnect J-EX4200-24T Software Manual

Dell PowerConnect J-Series Ethernet Switch Complete Software Guide for Junos OS

Policer

Schedulers
Related
Documentation
2882
Only one EXP rewrite rule (either default or custom) is supported on a switch. The switch
applies it to all the MPLS-enabled egress interfaces.
Policing helps to ensure that the amount of traffic forwarded through an LSP never
exceeds the requested bandwidth allocation. During periods of congestion (when the
total rate of queuing packets exceeds the rate of transmission), any new packets being
sent to an interface can be dropped because there is no place to store them. You should
configure a policer on the ingress PE switch:
If you are using MPLS with CCC, you bind the policer to the LSP. You cannot bind a
policer to a CCC interface.
If you are using IP over MPLS, you bind the policer to the
interface. You cannot bind a policer to the LSP when you are using IP over MPLS.
The schedulers for using CoS with MPLS are the same as for the other CoS configurations
on J-EX Series switches. Default schedulers are provided for
forwarding classes. If you are using
network-control
, or other custom forwarding classes, we recommend that you
expedited-forwarding
configure a scheduler to support that forwarding class. See "Understanding CoS
Schedulers" on page 2873.
Junos OS MPLS for J-EX Series Switches Overview on page 3057
Understanding CoS Classifiers on page 2867
Understanding CoS Schedulers on page 2873
Example: Configuring CoS on J-EX Series Switches on page 2883
Configuring CoS on MPLS Provider Edge Switch Using Circuit Cross-Connect (CLI
Procedure) on page 2932
Configuring Rewrite Rules for EXP Classifiers on MPLS Networks (CLI Procedure)
Configuring CoS on Provider Switches of an MPLS Network (CLI Procedure) on page 3106
Defining CoS Rewrite Rules (CLI Procedure) on page 2925
Configuring Policers to Control Traffic Rates (CLI Procedure) on page 2788
inet-family customer-edge
and
best-effort
,
assured-forwarding