Samsung Electronics Co., Ltd.

Eun-Sook Ko

Young-Seop Han

Byung-Gu Choe

A Join message load control system in a network using a Protocol Independent Multicast-Source Specific Multicast (PIM-SSM) protocol, the Join message load control system including a source access hop router creating a SOURCE-INACTIVE message and transmitting the created SOURCE-INACTIVE message when a multicast traffic is not received from the multicast server during a set Keep-Alive Time (KAT), and the SOURCE-INACTIVE message including information on an update set time of a PIM Join message; and a group access hop router resetting the update set time of the PIM Join message when the SOURCE-INACTIVE message is received from the source access hop router. Accordingly, it is possible to reduce the periodical transmission of unnecessary Join(S, G) messages and thereby reduce traffic load in a network by adjusting a JP timer of the Join(S, G) message depending on whether a channel(S, G) is active or inactive.

Join message load control system and method in network using PIM-SSM

A method for selecting a route in a routing protocol includes the steps of: measuring a message reachable time between a plurality of route information managers which manage route information on a network; constructing a reachable time table for managing the message reachable time; checking hop counts of different neighboring route information managers by a receiving route information manager which receives the same route information from the different neighboring route information managers; and selecting an optimum route based on the reachable time table when the neighboring route information managers have the same hop count. Thus, it is possible to reflect network status that varies constantly in selecting an optimum route in a routing protocol, thus maximizing optimum route effects and increasing transmission efficiency of a network.

Method for selecting route in routing protocol

A method for setting a host address in an Internet protocol based communication system, includes the steps of allowing a router to create a shorter label than a network prefix, the label being representative of the network prefix; allowing the router to incorporate the label instead of the network prefix in an RA (Router Advertisement) message and transmit the RA message to a host; allowing the host receiving the RA message to read the label and determine whether the read label matches a label in a prefix information table of the host; and, if the read label matches a label in the prefix information table, allowing the host to select and activate an interface ID (identifier) corresponding to the label of the prefix information table and acquire a global IPv6 (Internet Protocol, version 6) address corresponding to the activated interface ID as the host address.

Internet protocol based communication system and method for setting host address and selecting source address therein

A routing table management method using an interface ID in the IPv6 that supports RIPng (Routing Information Protocol for next generation), prevents congestion in routing table management because multiple addresses are designated to a single interface, through managing a routing table using a different interface ID for each IPv6 router interface. According to the routing table management method, a first router designates a predetermined value to a first field of a route entry, designates an interface ID to a second field, thereby generating routing information, and a routing information packet including the routing information is transmitted to a second router. Then, the second router extracts a first field value of the received routing information packet from the first router and if the extracted field value is a predetermined value, a second field value is extracted therefrom. Lastly, routing information of a route entry having an interface ID identical with the extracted second field value is updated to routing information of the received routing information packet.

Growing community of inventors

Suwon-si, South Korea

Eun-Sook Ko