Pipe Mode: Egress Pe Example - Cisco ASR 9000 Series Configuration Manual

Modular QoS Deployment Scenarios

Pipe Mode: Egress PE Example

This example shows the configuration of the egress PE for the MPLS DiffServ pipe mode. The egress LSR
does not copy the EXP bits to the precedence bits of the outgoing IP packet. The scheduling of the packets
on the egress interface is done indirectly on the EXP bits using the set qos-group and match qos-group
commands.
!Ingress interface:
class-map exp2
match mpls experimental topmost 2
!
class-map exp4
match mpls experimental topmost 4
!
policy-map policy2
class exp2
set qos-group 2
class exp4
set qos-group 4
!
interface GigabitEthernet0/0/0/2
service-policy input policy2
!Egress interface:
class-map qos2
match qos-group 2
class-map qos4
match qos-group 4
!
policy-map policy3
class qos2
bandwidth percent 20
random-detect default
class qos4
bandwidth percent 20
random-detect default
!
interface GigabitEthernet0/0/0/1
service-policy output policy3
Short Pipe Mode: Egress PE Example
This example shows the configuration of the egress PE for the MPLS DiffServ short pipe mode. The egress
LSR forwards the packet based on the precedence or differentiated services code point (DSCP) bits of the IP
packet after removing the labels. The egress LSR does not copy the EXP bits to the precedence bits of the
outgoing IP packet.
! Configuration is not needed for ingress interface
!Egress interface:
class-map prec4
match precedence 4
!
policy-map policy3
class prec4
bandwidth percent 40
random-detect precedence 4 100 ms 200 ms
!
interface GigabitEthernet0/0/0/1
service-policy output policy3
Cisco ASR 9000 Series Aggregation Services Router Modular Quality of Service Configuration Guide, Release 6.1.x
Pipe Mode: Egress PE Example
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