Configuring Qos Policy Propagation Using Border Gateway Protocol - Cisco ASR 9000 Series Configuration Manual

Configuring Modular QoS Service Packet Classification
Command or Action
Step 16
service-policy {input | output]} policy-map
Example:
RP/0/RSP0/CPU0:router(config-if)#
service-policy output policy1
Step 17
commit
Step 18 show policy-map interface type
interface-path-id [input | output]
Example:
RP/0/RSP0/CPU0:router# show policy-map
interface pos 0/2/0/0

Configuring QoS Policy Propagation Using Border Gateway Protocol

This section explains how to configure Policy Propagation Using Border Gateway Protocol (BGP) on a router
based on BGP community lists, BGP autonomous system paths, access lists, source prefix address, or destination
prefix address.
Policy Propagation Using BGP Configuration Task List
Policy propagation using BGP allows you to classify packets by IP precedence and/or QoS group ID, based
on BGP community lists, BGP autonomous system paths, access lists, source prefix address and destination
prefix address. After a packet has been classified, you can use other quality-of-service features such as weighted
random early detection (WRED) to specify and enforce policies to fit your business model.
Overview of Tasks
To configure Policy Propagation Using BGP, perform these basic tasks:
• Configure BGP and Cisco Express Forwarding (CEF). To configure BGP, see Cisco IOS XR Routing
• Configure a BGP community list or access list.
• Define the route policy. Set the IP precedence and/or QoS group ID, based on the BGP community list,
• Apply the route policy to BGP.
• Configure QPPB on the desired interfaces or configure QPPB on the GRE Tunnel interfaces.
Configuration Guide . To configure CEF, see Cisco IOS XR IP Address and Services Configuration
Guide .
BGP autonomous system path, access list, source prefix address or destination prefix address.
Cisco ASR 9000 Series Aggregation Services Router Modular Quality of Service Configuration Guide, Release 6.1.x
Configuring QoS Policy Propagation Using Border Gateway Protocol
Purpose
Attaches a policy map to an input or output interface to be used as
the service policy for that interface. In this example, the traffic policy
evaluates all traffic leaving that interface.
(Optional) Displays policy configuration information for all classes
configured for all service policies on the specified interface.
147