A method for checking physical link topology using loopback in ATM networks

摘要

PURPOSE: A method for confirming physical link topology using loopback in an ATM(Asynchronous Transfer Mode) information super highway is provided to compare information of a physical link stored in a database of a network management system with an actual condition, so as to automatically check changed or deleted link information. CONSTITUTION: Information configured in a database of a network management system is read to confirm both ends ports of a corresponding link using loopback(S100). If loopback is successful, link information is set to LS confirmed for completion of confirmation, and if loopback is failed, link information is set to LS twist for reconfirmation of the link. Whether the LS twist is set in a link of the database is decided(S110). If not, the steps are ended, and if set, the link is reconfirmed. While the reconfirmation of links set to LS twist, whether an LLID(Loopback Location Identification) is used is checked(S120). If not, links are reconfirmed using end-to-end loopback(S130), and if used, links are reconfirmed using segment loopback(S140).