Dell PowerConnect J-EX4200-24T Software Manual page 3158

Dell PowerConnect J-Series Ethernet Switch Complete Software Guide for Junos OS
Requirements
Overview and Topology
3086
the egress PE switch, and the core provider switches of the existing MPLS network.
Because of the unidirectional configuration, the DSCP classifier needs to be configured
only on the ingress PE switch.
Requirements on page 3086
Overview and Topology on page 3086
Configuring the Local PE Switch on page 3088
Configuring the Remote PE Switch on page 3090
Configuring the Provider Switch on page 3091
Verification on page 3092
This example uses the following hardware and software components:
Three J-EX Series switches
Before you configure CoS with MPLS, be sure you have:
Configured an MPLS network with two PE switches and one provider switch. See
"Example: Configuring MPLS on J-EX Series Switches" on page 3071. This example assumes
that an MPLS network has been configured using a cross circuit-connect (CCC).
This example describes adding custom classifiers and custom rewrite rules to switches
in an MPLS network that is using MPLS over CCC.
It is a unidirectional configuration. Therefore, you need to configure custom classifiers
and custom rewrite rules as follows:
On the ingress PE switch: custom DSCP classifier and custom EXP rewrite rule
On the egress PE switch: custom EXP classifier
On the provider switch: customer EXP classifier and custom EXP rewrite rule
NOTE: You can also configure schedulers and shapers as needed. If you are
using
assured-forwarding
classes, we recommend that you configure a scheduler to support that
forwarding class. See "Defining CoS Schedulers (CLI Procedure)" on page 2920.
The example creates a custom DSCP classifier (
binds this classifier to the CCC interface. It includes configuration of a policer on the
ingress PE switch. The policer is applied as a filter on the label-switched path (LSP)
lsp_to_pe2_ge1 (created in "Example: Configuring MPLS on J-EX Series Switches" on
page 3071) to ensure that the amount of traffic forwarded through the LSP never exceeds
the requested bandwidth allocation.
, , or other custom forwarding
expedited-forwarding
dscp1 ) on the ingress PE switch and