ATM network topology management method

An ATM network topology management method for an ATM network so that a plurality of ATM switches and a plurality of ATM terminals are connected optionally, wherein:

• an NHRP protocol is used for obtaining an ATM address from a network address in said ATM network, and
• a network management system is not directly connected to said ATM network,
• said ATM network topology management method comprising:
• a first step in which said network management system reads a network address of an NHRP server that has been set in an NHRP client placed in a router connected to said ATM network;
• a second step for recognizing a topology of a logical subnet served by said NHRP server within said ATM network by accessing said NHRP server with a network address derived from said first step and obtaining information on a logical subnet served by said NHRP server and an ATM terminal and an ATM switch belonging to said logical subnet;
• and
• a third step in which said network management system reads information on other NHRP server within said ATM network from said NHRP server, obtains a network address of said other NHRP server, accesses said other NHRP server with an obtained network address and obtains information on other logical subnet served by said other NHRP server and an ATM terminal and an ATM switch belonging to said other logical subnet so that a topology of a logical subnet served by said other NHRP server is automatically recognized in said ATM network.

An ATM network topology management method for an ATM network so that a plurality of ATM switches and a plurality of ATM terminals are connected optionally, wherein:

• an NHRP is used for obtaining an ATM address from a network address in said ATM network comprising:
• a first step, when said network management system is directly connected to said ATM network, for reading a network address of an NHRP server that has been set in an NHRP client placed in a network management system;
• a second step, when said network management system is not directly connected to said ATM network, in which said network management system reads a network address of an NHRP server that has been set in an NHRP client placed in a router connected to said ATM network;
• a third step for recognizing a topology of a logical subnet served by said NHRP server within said ATM network by accessing said NHRP server with a network address derived from said first step or said second step and obtaining information on a logical subnet served by said NHRP server and an ATM terminal and an ATM switch belonging to said logical subnet;
• and
• a fourth step in which said network management system reads information on other NHRP server within said ATM network from said NHRP server, obtains a network address of said other NHRP server, accesses said other NHRP server with an obtained network address and obtains information on other logical subnet served by said other NHRP server and an ATM terminal and an ATM switch belonging to said other logical subnet so that a topology of a logical subnet served by said other NHRP server is automatically recognized in said ATM network.