Method of searching for host in ipv6 network

Abstract

A method of searching for a host in a network using IPv4 network comprises the steps of requesting host information, including link-layer address information and IP address information about an IP to be searched for, by sending a Neighbor Solicitation (NS) packet in which the IP to be searched for is set in an ICMPv6 target address to the network, after sending the NS packet, waiting for a predetermined time by taking a processing speed of a host and a transfer rate according to a network environment and state into consideration, after the predetermined time of waiting, determining whether a Neighbor Advertisement (NA) packet of the IP to be searched for has been received, and if, as a result of the determination, the NA packet of the IP to be searched for is determined to have been received, acquiring the host information from the NA packet.

1 . A method of searching for a host in an IPv6 network, the method comprising the steps of:
 requesting host information, including link-layer address information and IP address information about an IP to be searched for, by sending a Neighbor Solicitation (NS) packet in which the IP to be searched for is set in an ICMPv6 target address to the network;   after sending the NS packet, waiting for a predetermined time by taking a processing speed of a host and a transfer rate according to a network environment and state into consideration;   after the predetermined time of waiting, determining whether a Neighbor Advertisement (NA) packet of the IP to be searched for has been received; and   if, as a result of the determination, the NA packet of the IP to be searched for is determined to have been received, acquiring the host information from the NA packet.   
     
     
         2 . A method of searching for a host in an IPv6 network, the method comprising the steps of:
 requesting router information, including link-layer address information and IP address information, by sending a Router Solicitation (RS) packet to the network;   after sending the RS packet, waiting for a predetermined time by taking a processing speed of a router and a transfer rate according to a network environment and state into consideration;   after the predetermined time of waiting, determining whether a Router Advertisement (RA) packet has been received; and   if, as a result of the determination, the RA packet is determined to have been received, acquiring the router information from the RA packet.   
     
     
         3 . A method of searching for a host in an IPv6 network, the method comprising the steps of:
 capturing a Neighbor Discovery Protocol (NDP) packet;   determining whether the captured NDP packet is one of RS, NS, and NA packets; and   if, as a result of the determination, the captured NDP packet is determined to be one of the RS, NS, and NA packets, acquiring host information, including link-layer address information and IP address information, from the captured packet or if, as a result of the determination, the captured NDP packet is determined to be an RA packet, acquiring router information from the RA packet.   
     
     
         4 . The method as claimed in  claim 1 , wherein the host information further comprises field information about the NA (Neighbor Advertisement) packet. 
     
     
         5 . The method as claimed in  claim 3 , wherein the router information comprises the link-layer address information and the IP address information. 
     
     
         6 . The method as claimed in  claim 2 , wherein the router information selectively further comprises field information about RA packet. 
     
     
         7 . The method as claimed in  claim 1 , wherein at least one of the host information and the router information manages the IP address and the link-layer address in a list form. 
     
     
         8 . The method as claimed in 3, wherein the host information further comprises field information about the NA (Neighbor Advertisement) packet. 
     
     
         9 . The method as claimed in  claim 3 , wherein the router information selectively further comprises field information about RA packet. 
     
     
         10 . The method as claimed in  claim 2 , wherein at least one of the host information and the router information manages the IP address and the link-layer address in a list form. 
     
     
         11 . The method as claimed in  claim 3 , wherein at least one of the host information and the router information manages the IP address and the link-layer address in a list form.