Subscriber Services: Access-line ID interface sets based on Agent Circuit ID and/or Agent Remote ID

You can configure interface sets for dynamic subscriber VLANs based on the access-line identifiers (ALI) that are received in a DHCPv4, DHCPv6, or PPPoE discovery packet. The set can be created when the identifier received is the ACI, the ARI, both the ACI and the ARI, or when neither the ACI nor the ARI is received. These interface sets model subscriber identities in a 1:N S-VLAN access model, where a single VLAN exists per service, but more than one subscriber might be using the service. In earlier releases, only the ACI could create the interface sets (ACI sets); when it was not present, the discovery packet was dropped. You can configure the creation of either ALI sets using this method or ACI interface sets using the legacy method, but not both. A CLI check prevents you from configuring both of these methods. The legacy ACI method might be deprecated in a future release.