BRIDGED ETHERNET ENCAPSULATION PROCESSING SYSTEM ON AAL5 OF AN RFC2684 PROPER FOR A HIGH-SPEED ETHERNET TO ATM GATEWAY AND A METHOD THEREFOR, SPECIFICALLY CONCERNED IN HANDLING A BRIDGED ETHERNET ENCAPSULATION PROCESS AS HARDWARE BY USING A MINIMUM MEMORY

摘要

PURPOSE: A bridged Ethernet encapsulation processing system on AAL5 of an RFC2684 proper for a high-speed Ethernet to ATM gateway and a method therefor are provided to process a bridged Ethernet encapsulation defined in RFC2684 as hardware by using a minimum memory so as to be proper for high-speed Ethernet and an Ethernet to ATM gateway, thereby operating at any velocity. CONSTITUTION: An LLC encapsulation and AAL5 process block(20) is connected between an SONET/SDH ATM UNI PHY transceiver(13) and an Ethernet PHY transceiver(14) connected to transformer and RJ45 units(11,12), respectively. The SONET/SDH ATM UNI PHY transceiver(13) and the LLC encapsulation and AAL5 process block(20) are controlled by a CPU(15) connected through a local bus. The LLC encapsulation and AAL5 process block(20) is connected to the Ethernet PHY transceiver(14) through one of MII(Media Independent Interface), RMII, and GMII while being connected to the SONET/SDH ATM UNI PHY transceiver(13) through a UTOPIA-2.