NETWORK MANAGEMENT APPARATUS AND METHOD

• US 20140119191A1
• Filed: 07/30/2013
• Published: 05/01/2014
• Est. Priority Date: 10/25/2012
• Status: Abandoned Application

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: ONOUE, Koichi
• Application Number:
  US13/954,262
• Publication Number:
  US 20140119191A1
• Time in Patent Office: Days
• US Class Current: 370/236
• CPC Class Codes: H04L 45/16 Multipoint routing
• CPC Class Codes: H04L 45/74 Address processing for routing
• CPC Class Codes: H04L 47/15 in relation to multipoint traffic arrangements for broadcast or multicast in data networks H04L12/18

Abstract

A disclosed network management method includes: when the number of multicast domains in a network exceeds a predetermined threshold, setting one new multicast domain for at least a part of plural multicast domains based on an inclusion relationship among the plural multicast domains; and transmitting to a relay apparatus, data representing correspondence between a multicast address of the plural multicast domains and a multicast address of the one new multicast domain.

Claims

1. A computer-readable, non-transitory storage medium storing a program for causing a computer to execute a process, the process comprising:

upon detecting that the number of multicast domains in a network exceeds a predetermined threshold, setting one new multicast domain for at least a part of a plurality of multicast domains based on an inclusion relationship among the plurality of multicast domains; and

transmitting to a relay apparatus, data representing correspondence between a multicast address of the plurality of multicast domains and a multicast address of the one new multicast domain.

2. The computer-readable, non-transitory storage medium as set forth in claim 1, wherein the process comprises:

identifying a node that does not belong to the one new multicast domain from among nodes that belongs to either of the plurality of multicast domains; and

transmitting to the relay apparatus in the network, data representing correspondence between a unicast address of a certain relay apparatus that has the identified node under the certain relay apparatus and a multicast address of the plurality of multicast domains.

3. The computer-readable, non-transitory storage medium as set forth in claim 1, wherein the setting comprises:

setting the one new multicast domain so that the number of nodes that belong to the one new multicast domain is the greatest.

4. The computer-readable, non-transitory storage medium as set forth in claim 1, wherein the process further comprises:

collecting, from the relay apparatus in the network, a multicast address of a multicast domain relating to the relay apparatus;

counting the number of multicast domains in the network based on the collected multicast address; and

determining whether or not the counted number of multicast domains exceeds the predetermined threshold.

5. A network management method, comprising:

upon detecting that the number of multicast domains in a network exceeds a predetermined threshold, setting, by using a computer, one new multicast domain for at least a part of a plurality of multicast domains based on an inclusion relationship among the plurality of multicast domains; and

transmitting, by using the computer, to a relay apparatus, data representing correspondence between a multicast address of the plurality of multicast domains and a multicast address of the one new multicast domain.

6. A network management apparatus, comprising:

a memory; and

a processor configured to use the memory and execute a process, the processing comprising;

upon detecting that the number of multicast domains in a network exceeds a predetermined threshold, setting one new multicast domain for at least a part of a plurality of multicast domains based on an inclusion relationship among the plurality of multicast domains; and

transmitting to a relay apparatus, data representing correspondence between a multicast address of the plurality of multicast domains and a multicast address of the one new multicast domain.