| 摘要 |
An access system (ACC 1 ) for relating service providers (SP 1 -SPn) to users (U 11 -Um 1 ) includes an edge access server (EAS) connecting the service providers and penults (P 1 -Pk) connecting the users. User devices (UD 11 -UD 14 ) are connected via VLAN:s to a user port (UP 11 ) on the penult. The edge access server has service agents (SA 1 -SAn), an administrator (AD 1 ) and a broadcast handler (BH 1 ), which forms a handling system together with handlers (H 1 -Hk) in the penults. A user (U 11 ) decision including VLAN, service (SP 1 ) and user port (UP 1 ) is sent to the administrator (AD 1 ), which dynamically allocates to the relevant service agent (SA 1 ) a MAC address, defining a relation (R 11 ). A user device (UD 1 ) broadcasts a DHCP request unicasted together with user port (UP 11 ) to the broadcast handler (BH 1 ). The user device (UD 11 ) gets its IP address and IP address to the service sgent (SAl). The device (UD 11 ) broadcasts an ARP request which is unicasted by the penult (P 1 ), to get the MAC address to the service agent (SA 1 ). The MAC address has an internal structure, describing the switching route from source to destination.
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