Cisco 10000 Series Configuration Manual page 575

Configuring Dynamic Subscriber Services
In previous provisioning models, during the subscription process a subscriber chooses a service level
based on bandwidth options. If the subscriber later decides more bandwidth is needed, the subscriber
calls the provisioning center to change services. For example, a subscriber might choose a basic service
with low bandwidth and later change to a premium service with high bandwidth. The Cisco 10000 series
router, however, offers a dynamic QoS model that allows you to download QoS parameters from the
RADIUS server to an ATM VC.
Dynamic Bandwidth Selection (DBS) allows wholesale service providers to sell different levels of
service to retail service providers, based on the bandwidth of the ATM VC connection. The retail service
provider can then offer subscribers the ability to choose services with varying levels of bandwidth
allocation. If a subscriber changes services, the service provider can dynamically change the ATM
shaping on the VC based on the RADIUS profile of the subscriber. RADIUS accounting mechanisms
control billing for the different services.
An extension to DBS provides the ability to modify an existing VC weight and watermark values using
a RADIUS Pull model in which the subscriber triggers the parameter changes. The DBS
Extensions—VC Weight and Watermark feature enables the modification of existing VC weight and
watermark values without tearing down and recreating the VC.
The Define Interface Policy-Map AV Pairs AAA feature allows the router to apply QoS parameters
dynamically to sessions, using two RADIUS vendor-specific attributes (VSAs).
Per session queuing and shaping for PPPoE over VLANs using RADIUS enables you to dynamically
apply queuing and shaping policies to PPPoE over VLAN sessions.
This chapter describes the features that support dynamic subscriber services. It includes the following
topics:
Applying Traffic Shaping Parameters Using RADIUS Profiles, page 17-2
•
Dynamically Changing VC Weight and Watermark Values, page 17-18
•
Applying QoS Parameters Dynamically to Sessions, page 17-24
•
Shaping PPPoE Over VLAN Sessions Using RADIUS, page 17-34
•
Shaping and Queuing Per-Session Traffic on LNS, page 17-44
•
Queuing PPP Sessions on ATM VCs, page 17-50
•
Related Documentation, page 17-66
•
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