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Example: Configure DSCP Classification for VPLS
This example shows how to configure a DSCP classifier for a VPLS.
Requirements
This example uses the following hardware and software components:
An MX Series 5G Universal Routing Platform with an ATM interface.
Junos OS Release 10.4 or later.
Overview
In this example, you configure a DSCP classifier dscp_vpls on ATM interface at-4/1/1 with ether-vpls-over-atm-llc encapsulation. The classifier dscp_vpls is applied to
the interface and the interface is listed in the VPLS routing instance vpls1 on the ingress PE router.
Configuration
CLI Quick Configuration
To quickly configure the DSCP classifier for a VPLS, copy the following commands to a text file, remove any line breaks, and then paste the commands into the CLI.
user@host# set interfaces at-4/1/1 mtu 9192 user@host# set interfaces at-4/1/1 atm-options vpi 10 user@host# set interfaces at-4/1/1 unit 0 encapsulation ether-vpls-over-atm-llc user@host# set interfaces at-4/1/1 unit 0 vci 10.128 user@host# set interfaces at-4/1/1 unit 0 family vpls user@host# set class-of-service classifiers dscp dscp_vpls forwarding-class expedited-forwarding loss-priority low code-points 000010 user@host# set interfaces at-4/1/1 unit 0 classifiers dscp dscp_vpls user@host# set routing-instances vpls1 instance-type vpls user@host# set routing-instances vpls1 interface at-4/1/1.0 user@host# set routing-instances vpls1 route-distinguisher 10.255.245.51:1 user@host# set routing-instances vpls1 vrf-target target:1234:1 user@host# set routing-instances vpls1 protocols vpls site-range 10 user@host# set routing-instances vpls1 protocols vpls no-tunnel-services user@host# set routing-instances vpls1 protocols vpls site vpls-1-site-1 site-identifier 1
Configuring the DSCP Classifier for a VPLS
Step-by-Step Procedure
The following example requires that you navigate various levels in the configuration hierarchy. For information about navigating the CLI, see Using the CLI Editor in Configuration Mode in the Junos OS CLI User Guide.
To configure the DSCP classifier for a VPLS:
Configure the ATM interface
at-4/1/1.0and the encapsulation asether-vpls-over-atm-llc.[edit interfaces] user@host# set at-4/1/1 mtu 9192 user@host# set at-4/1/1 atm-options vpi 10 user@host# set at-4/1/1 unit 0 encapsulation ether-vpls-over-atm-llc user@host# set at-4/1/1 unit 0 vci 10.128 user@host# set at-4/1/1 unit 0 family vpls
Configure the DSCP classifier
dscp_vpls.[edit class-of-service] user@host# set classifiers dscp dscp_vpls forwarding-class expedited-forwarding loss-priority low code-points 000010
Apply the classifier
dscp_vplsto the ATM interfaceat-4/1/1.0.[edit interfaces] user@host# set at-4/1/1 unit 0 classifiers dscp dscp_vpls
Include the ATM interface virtual circuit
at-4/1/1.0as part of the routing instancevpls1configuration.user@host# set routing-instances vpls1 instance-type vpls user@host# set routing-instances vpls1 interface at-4/1/1.0 user@host# set routing-instances vpls1 route-distinguisher 10.255.245.51:1 user@host# set routing-instances vpls1 vrf-target target:1234:1 user@host# set routing-instances vpls1 protocols vpls site-range 10 user@host# set routing-instances vpls1 protocols vpls no-tunnel-services user@host# set routing-instances vpls1 protocols vpls site vpls-1-site-1 site-identifier 1
Results
From configuration mode, confirm your configuration
by entering the show interfaces, show class-of-service, and show routing-instances commands. If the output does
not display the intended configuration, repeat the instructions in
this example to correct the configuration.
user@host# show interfaces at-4/1/1
mtu 9192;
atm-options {
vpi 10;
}
unit 0 {
classifiers {
dscp dscp_vpls;
}
encapsulation ether-vpls-over-atm-llc;
vci 10.128;
family vpls;
}
user@host# show class-of-service
classifiers {
dscp dscp_vpls {
forwarding-class expedited-forwarding {
loss-priority low code-points 000010;
}
}
}
user@host# show routing-instances
vpls1 {
instance-type vpls;
interface at-4/1/1.0;
route-distinguisher 10.255.245.51:1;
vrf-target target:1234:1;
protocols {
vpls {
site-range 10;
no-tunnel-services;
site vpls-1-site-1 {
site-identifier 1;
}
}
}
}