Cisco ASR 9000 Series Service Configuration Guide

Modular QoS Deployment Scenarios on Cisco ASR 9000 Series Routers
QoS on Multicast VPN
QC-180
Cisco ASR 9000 Series Aggregation Services Router Modular Quality of Service Configuration Guide
OL-23108-02
random-detect precedence 4 100 ms 200 ms
!
interface GigabitEthernet0/0/0/1
service-policy output policy3
QoS on Multicast VPN
ASR 9000 Ethernet Line Cards
The support for QoS services on a multicast VPN (mVPN) enabled network involves the marking of
DSCP or precedence bits on the tunnel IP header. This feature enables MPLS carriers to offer QoS on
mVPN services. The mVPN network uses generic routing encapsulation (GRE) tunnels between
provider edge (PE) devices. Multicast packets are placed in GRE tunnels for transmission across the
MPLS core network.
The ingress interfaces use the set precedence tunnel and set dscp tunnel commands (both conditional
and unconditional) within an ingress policy applied to the ingress interface. shows a typical mVPN
network. When an IP packet arrives at PE1 on the ingress interface E1, the packet is sent out of the tunnel
interface E2 into the core network by encapsulating the IP packet inside a GRE tunnel.
Customer ABC
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Customer ABC
Site B
Service
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Provider
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Customer XYZ
Site A
Customer XYZ
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Cisco ASR 9000 Series Specifications

General

Brand	Cisco
Model	ASR 9000 Series
Category	Network Router
Language	English