Example Traffic Class Configuration For Differentiated Services; Table 59: Differentiated Services Mapping - Juniper JUNOSE 11.2.X BGP AND MPLS Configuration Manual

Example Traffic Class Configuration for Differentiated Services

Copyright © 2010, Juniper Networks, Inc.
The commands in this example illustrate a partial network configuration that supports
four differentiated service classes on a particular tunnel: a best-effort class, two assured
forwarding classes, and an expedited forwarding class. Table 59 on page 313 presents
the mapping between EXP bits, PHB, PHB ID, and traffic class/color combination.

Table 59: Differentiated Services Mapping

EXP PHB
000 BE
001 AF11
010 AF12
011 AF13
100 AF21
101 AF22
110 AF23
111 EF
NOTE: This example includes both MPLS and policy configuration commands, and
assumes that you are thoroughly familiar with the information and commands presented
in the JunosE Policy Management Configuration Guide.
The four traffic classes are configured to allocate fabric resources and allow global
synchronization of the three segments of the data path through an E Series router: ingress,
fabric, and egress. The JunosE Software automatically creates the best-effort traffic
class, with a default weight of eight. You must define the remaining three classes, af1,
af2, and ef. In this example, the af1 class has twice as much fabric bandwidth as the
best-effort class, and the af2 class has twice as much fabric bandwidth as the af1 class.
The expedited forwarding traffic (the ef class) requires strict-priority queuing.
host1(config)#traffic-class af1
host1(config-traffic-class)#fabric-weight 16
host1(config)#traffic-class af2
host1(config-traffic-class)#fabric-weight 32
host1(config)#traffic-class ef
host1(config-traffic-class)#fabric-strict-priority
Define two scheduler profiles for the af1 and af2 classes on the egress line modules:
host1(config)#scheduler-profile af1-scheduler-profile
PHB ID 6-bit PHB ID
0x0000 00
0x2800 10
0x3000 12
0x3800 14
0x4800 18
0x5000 20
0x5800 22
0xb800 46
Chapter 4: Configuring MPLS
Traffic
Class/Color
best-effort/green
af1/green
af1/yellow
af1/red
af2/green
af2/yellow
af2/red
ef/green
313