| 摘要 |
Several services offered by distinct service providers can be accessed from a single user device, through one or more gateways. To ensure quality of service control, each service provider allocates a distinct address to the user device. Distinct forwarding information bases and service mappings are defined at the user device, comprising one such forwarding information base for each service provider and one service mapping for each service type offered by a given service provider. The separate addresses allocated to the user device are related to the separate service mappings. Distinct virtual local area networks (VLANs) are defined, each containing one of the forwarding information base and one of the service mappings. Tags added to packets by the gateways and arriving at the user device are used to link the packets to the proper service provider and to the proper service type.
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