Ethernet over Synchronous Digital Hierarchy System and Method for supporting the direct cooperating of Systems Network Architecture and the Transmission Control Protocol/Internet Protocol

摘要

The present invention relates to a network interworking system and method, and in particular, because the SNA (Systems Network Architecture) protocol and the TCP / IP (Transmission Control Protocol / Internet Protocol) protocol directly interoperate for the expansion of a remote network in the Internet, IBM The present invention relates to a network interworking system and method capable of interworking without adding a gateway device for establishing TCP / IP network and interworking with hosts.;Conventional network interworking systems are currently using IBM's host products, which are used in most financial sectors such as banks and insurance companies, using a unique protocol called SNA. In other words, in the existing bank computer system environment, IBM hosts are located at the same location, so all IBM hosts can communicate using SNA protocol alone.;In the US, however, in the financial and financial sectors of the September 11, 2001 terrorist attacks, IBM hosts had to take Disaster Recovery to take action. As a countermeasure against the possibility of such a failure, the large-scale transmission equipment is used to dualize the computer facilities to the provinces and to separate the networks. In this case, the SNA protocol is not directly interworked with the TCP / IP protocol, so in most cases, the interworking method establishes a TCP / IP network for extending the remote network of IBM hosts, and separates the gateway for interworking with SNA. Equipment must be added.;The system for network interworking of this type of SNA protocol has various problems such as the limitation of processing capacity such as CPU and memory of commercial server, program error, and various networks such as IP equipment and transmission equipment. This can lead to complex network configurations, such as building equipment and adding additional gateways. Therefore, it is only a network configuration that can not give a satisfactory effect.;In the present invention, SNA protocol, which is a communication protocol of IBM hosts, is also installed in the same system, so that SNA and TCP / Provides EoS (Ethernet over SDH) system and method that supports direct linkage of IP.;In addition, EoS (Ethernet over SDH) system 100 that supports direct linkage between SNA and TCP / IP is a system for interworking the SNA protocol network, and the IBM computer 10 side with a backbone network (BKN) interposed therebetween. The IBM computer 10 and the first transmission equipment 118 are installed in the transmission direction, and the IBM computer 10 'and the transmission equipment 118' are installed in the direction of the transmission equipment on the IBM computer 10 'side.;Therefore, the system for interworking the network of SNA and TCP / IP protocols constructs various network equipment such as IP equipment and transmission equipment, and does not add a separate gateway, thus greatly reducing the causes of errors caused by the complicated network configuration. do.;Gateway, Router, Transmission Equipment, EoS (Ethernet over SDH)