Disclosed herein are methods of providing a client with local area network
connectivity and access to other services in a cable network. One such
method includes: allocating bandwidth in the network to support
bi-directional data communication between the host and a central
concentrator. Bandwidth is allocated for a downstream flow on at least
one downstream frequency channel based on a mapping between the
downstream flow and a particular octet in a downstream packet. Bandwidth
is allocated for an upstream flow on at least one non-shared upstream
tone. The method also includes conveying a bi-directional data flow
between the host and the concentrator over the allocated bandwidth,
including conveying the upstream flow using the allocated bandwidth and
conveying the downstream flow using the allocated bandwidth. The method
also includes utilizing bandwidth in the network not allocated to data
communications to provide the host with at least one audio/visual
service.