reduced overhead. The elimination of permanent
virtual connections (PVC), which
are an inherent part of ATM solutions, opens
the door to new architectures. Ethernetbased
features, such as VLAN-per-service in
combination with authentication using
DHCP Option 82, can greatly reduce the
costs of operating a network. The simplified
network architecture makes it possible to introduce
packet transfer mode (PTM) technology.
This, and increased requirements to
deliver new services with the right QoS, will
put new requirements on products and the
network architecture. Ericsson has previously
outlined many of the architectural
principles of IP/Ethernet-based access.5