Table 31: Differentiated Services Mapping - Juniper JUNOSE SOFTWARE FOR E SERIES 11.0.X - BGP AND MPLS CONFIGURATION GUIDE 2009-12-30 Configuration Manual

Table 31: 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
host1(config-scheduler-profile)#weight 16
host1(config)#scheduler-profile af2-scheduler-profile
host1(config-scheduler-profile)#weight 32
Create queue profiles to define how queues are instantiated to implement the
corresponding traffic classes and PHBs. The JUNOSe software automatically creates
the best-effort queue profiles.
host1(config)#queue-profile af1-queues
Example Traffic Class Configuration for Differentiated Services
PHB ID 6-bit PHB ID
0x0000 00
0x2800 10
0x3000 12
0x3800 14
0x4800 18
0x5000 20
0x5800 22
0xb800 46
Chapter 3: Configuring MPLS
Traffic Class/Color
best-effort/green
af1/green
af1/yellow
af1/red
af2/green
af2/yellow
af2/red
ef/green
305