Network managing method and network managing apparatus
AssigneePanasonic Corporation
InventorsJun Hirano, Chan Wah Ng, Pek Yew Tan
Life of this patent
Estimating the term…
Abstract
In order to verify if upper-level router information, or ULRI (information on the upper-level router with respect to a predetermined node) is valid, MN (Mobile Node) 220 associated to ULMR (Upper-Level Mobile Router) 210 acquires ULRI such as the address of ULMR (310), inserts ULRI into a BU (Binding Update) message, and sends it to HA (Home Agent) 235 (320). On receiving the BU message with ULRI, HA sends a BA (Binding Acknowledgement) message set to pass through the router that is specified in ULRI (330). If ULRI is valid, ULMR forwards the BA message to MN (340). If ULRI is not valid, ULMR discards the BA message.
Claims19
A network managing method in a communication system, the communication system comprising a first communication node which is attached to a sub-network, a second communication node which is a correspondent node for the first communication node, and a router which is in the sub-network or an upper-level network of the sub-network, the network managing method for verifying if certain information is identification information of the router, comprising:
- a step where the first communication node acquires the certain information;
- a step where the first communication node generates a first message including the certain information, and sends the first information to the second communication node;
- a step where the second communication node generates a second message to reply to the first message and sends the second message to the second communication node, the second message being set so as to be routed to the first communication node via an intermediate router based on the certain information included in the first message, the intermediate router being identified by the certain information;
- a step where the intermediate router being identified by the certain information intercepts the second message;
- and
- a step where the intermediate router being identified by the certain information forwards the second message to the first communication node in case that the certain information is identification information of the intermediate router itself, and discards the second message in case that the certain information is not identification information of the intermediate router itself.
A network managing apparatus in a communication system, the communication system comprising a first communication node which is attached to a sub-network, a second communication node which is a correspondent node for the first communication node, and a router which is in the sub-network or an upper-level network of the sub-network, the network managing apparatus for verifying if certain information is identification information of the router, the network managing apparatus being disposed in the first communication node and comprising:
- message acquiring means for acquiring the certain information;
- first message generating and sending means for generating a first message including the certain information, and sending the first information to the second communication node;
- second message receiving means for receiving a second message for the second communication node to reply to the first message, the second message being set so as to be routed to the first communication node via an intermediate router based on the certain information included in the first message;
- and
- determining means for determining that the certain information is identification information of the router in case that the second message is received by the second message receiving means.
A network managing apparatus in a communication system, the communication system comprising a first communication node which is attached to a sub-network, a second communication node which is a correspondent node for the first communication node, and a router which is in the sub-network or an upper-level network of the sub-network, the network managing apparatus for verifying if certain information is identification information of the router, the network managing apparatus being disposed in the first communication node and comprising:
- message acquiring means for acquiring the certain information;
- first message generating and sending means for generating a first message including the certain information, and sending the first information to the second communication node;
- second message receiving means for receiving a second message for the second communication node to reply to the first message, the second message being set so as to be routed to the first communication node via an intermediate router based on the certain information included in the first message;
- and
- third message generating and sending means generating a third message to reply to the second message and sending the third message to the second communication node.
A network managing apparatus in a communication system, the communication system comprising a first communication node which is attached to a sub-network, a second communication node which is a correspondent node for the first communication node, and a router which is in the sub-network or an upper-level network of the sub-network, the network managing apparatus for verifying if certain information is identification information of the router, the network managing apparatus being disposed in the second communication node and comprising:
- first message receiving means for receiving a first message including certain information from the first communication node;
- second message generating and sending means for generating a second message to reply to the first message, and sending the second message to the second communication node, the second message being set so as to be routed to the first communication node via an intermediate router based on the certain information included in the first message;
- third message receiving means for receiving a third message for the first communication node to reply to the second message;
- and
- determining means for determining that the certain information is identification information of the router in case that the third message is received by the third message receiving means.
Dependencies are inferred from the claim text.