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CHAPTER
8-1
Cisco 10000 Series Router Software Configuration Guide
OL-2226-23
8
Configuring ATM Permanent Virtual Circuit
Autoprovisioning
With the rapid growth in broadband customers, service providers need to provision service for
subscribers in the most efficient and accurate way possible. The ATM PVC autoprovisioning feature
automates the configuration of a large number of ATM permanent virtual circuits (PVCs) in DSL service
provider networks using the PPPoA, PPPoE, and RBE protocols.
This chapter describes how to configure the ATM PVC Autoprovisioning feature by using a local
configuration. It also describes the VBR-nrt Oversubscription feature for ATM VCs.
This chapter describes the following features
• ATM PVC Autoprovisioning, page 8-1
• Local Template-Based ATM PVC Provisioning, page 8-2
• Variable Bit Rate Non-Real Time Oversubscription, page 8-14
ATM PVC Autoprovisioning
The Cisco 10000 series router supports the ATM PVC Autoprovisioning feature. By using this feature,
DSL wholesale service providers can use a local configuration to dynamically provision ATM service
for subscribers.
Incoming traffic on the VPI/VCI pair triggers virtual circuit (VC) creation. The
Cisco
10000 series router does not create the on-demand VC until incoming traffic arrives. For example:
• On-demand VCs configured on the interface remain in the inactive state until the first incoming
packet arrives on the VC, triggering VC creation.
• If you use the reload command on the Cisco 10000 series router, the router does not establish the
on-demand VCs until incoming traffic triggers VC creation.
The ATM PVC Autoprovisioning feature is described in the following topics:
• Local Template-Based ATM PVC Provisioning, page 8-2
• ATM Interface Oversubscription, page 8-2
• VC Class, page 8-3
• ATM VC Scaling and VC Assignment, page 8-4
• Feature History for ATM PVC Autoprovisioning, page 8-5
• Restrictions for ATM PVC Autoprovisioning, page 8-5