Figure 64: Differentiated Services over an MPLS Network
Differentiated Services Configuration Example
To configure the differentiated services described in this example:
1. Create and attach an IP input policy for the QoS Internet service to CE interfaces on
the PE router for incoming traffic.
host1(config)#ip classifier-list prec0 ip any any precedence 0
host1(config)#ip classifier-list prec1 ip any any precedence 1
host1(config)#ip policy-list qos-service
host1(config-policy-list)#classifier-group prec0
host1(config-policy-list-classifier-group)#user-packet-class 0
host1(config-policy-list-classifier-group)#traffic-class class0
host1(config-policy-list-classifier-group)#color green
host1(config-policy-list)#classifier-group prec1
host1(config-policy-list-classifier-group)#user-packet-class 1
host1(config-policy-list-classifier-group)#traffic-class class1
host1(config-policy-list-classifier-group)#color green
host1(config)#interface atm 3/0.1
host1(config-subif)#ip policy input qos-service
2. Create and attach an IP input policy for the plain Internet service to CE interfaces on
the PE router for incoming traffic. All traffic is treated as best effort, so no classifier
group is necessary.
host1(config)#ip policy-list plain-service
host1(config-policy-list-classifier-group)#user-packet-class 0
host1(config-policy-list-classifier-group)#traffic-class best-effort
host1(config-policy-list-classifier-group)#color green
host1(config)#interface atm 5/0.1
host1(config-subif)#ip policy input plain-service
3. Attach an IP output policy for the QoS VPN service to CE interfaces on the PE router
for outgoing traffic. The same qos-service policy that is attached to the input in Step
1 can be used on the output, even though the UPC setting is not needed.
host1(config)#Interface atm 3/0.1
host1(config-subif)#Ip policy output qos-service
Copyright © 2010, Juniper Networks, Inc.306
JunosE 11.2.x BGP and MPLS Configuration Guide
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