Juniper JUNOS OS 10.3 - SOFTWARE Manual page 3476

Complete Software Guide for Junos
Requirements
Overview and Topology
3380
®
OS for EX Series Ethernet Switches, Release 10.3
switch. It describes adding the configuration of CoS components to the ingress PE switch,
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 3380
Overview and Topology on page 3380
Configuring the Local PE Switch on page 3382
Configuring the Remote PE Switch on page 3384
Configuring the Provider Switch on page 3385
Verification on page 3386
This example uses the following hardware and software components:
Junos OS Release 10.1 or later for EX Series switches
Three 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 EX Series Switches" on page 3365. 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 3209.
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)
(created in "Example: Configuring MPLS on EX Series Switches" on page 3365)
lsp_to_pe2_ge1
, expedited-forwarding , or other custom forwarding
) on the ingress PE switch and
dscp1
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