Asynchronous transfer mode based service consolidation switch

An asynchronous transfer mode based service consolidation switch, comprising:

• a plurality of input/output modules, each input/output module having a first port processor and associated port processor queues operable to receive traffic from an input link, the first port processor operable to generate internal cells having an internal asynchronous transfer mode cell based format in response to the traffic received over the input link, each input/output module having a second port processor associated with its first port processor, the associated second port processor operable to receive internal cells from other first port processors, the associated second port processor operable to generate traffic for transfer over an output link in response to the internal cells received;
• and
• a switch control module coupled to the plurality of input/output modules, the switch control module having a data crossbar operable to transfer internal cells from an originating first port processor of any of the plurality of input/output modules to a destination second port processor of any of the plurality of input/output modules, the switch control module having a bandwidth arbiter operable to control internal cell transfer between the originating first port processor queue and the destination second port processor according to a quantity of bandwidth of said data crossbar available for said internal cell transfer, the switch control module having a multipoint topology controller associated with each first port processor, the multipoint topology controller operable to schedule transfer of internal cells from the originating first port processor to the destination second port processor;
• wherein the bandwidth arbiter is operable to assign dedicated bandwidth to a first queue of the originating first port processor that is not available to other first port processor queues, and operable to assign dynamic bandwidth that is available to two or more of said first port processor queues.