Ex parte SARNIKOWSKI et al. - Page 11




          Appeal No. 1998-0706                                                        
          Application 08/166,279                                                      


          from Allen's processors to Allen's cluster modules (Answer                  
          at 10).  Specifically, the examiner relies on the following                 
          description in Bione of a prior art communication system that               
          employs look-up tables to effect communication between the                  
          stations of different LANs:                                                 
               LANs using the same protocol are interconnected by a                   
               control interface referred to as a "bridge".                           
                    Prior art bridge interfaces commonly comprise                     
               so-called memory look-up tables for providing a                        
               cross-reference between each station connected to                      
               the bridge interface (bridge) and the LAN in which                     
               the respective station is situated.  More                              
               particularly, the memory look-up tables are used to                    
               store a plurality of addresses, each identifying a                     
               respective station, together with a code identifying                   
               the particular LAN to which the station belongs.                       
               When a message is directed via the bridge to a given                   
               destination station, the memory look-up table is                       
               searched to locate the stored address code of the                      
               destination station for determining the LAN to which                   
               the station belongs.  For stations in LANs serviced                    
               by different bridges, an interbridge address is                        
               created and put in temporary memory when the message                   
               is forwarded to the next bridge.  The process is                       
               repeated for each message, with the bridge directing                   










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