Management apparatus, method, and storage medium for specifying a network interface used for communication with respect to each of various network devices

• US 10,097,502 B2
• Filed: 12/06/2016
• Issued: 10/09/2018
• Est. Priority Date: 12/09/2015
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Hirai, Masahito
• Primary Examiner(s): Pezzlo, John
• Application Number:
  US15/371,046
• Publication Number:
  US 20170171145A1
• Time in Patent Office: 672 Days
• Field of Search: 370252, 370389, 370419, 370466
• CPC Class Codes: H04L 2101/686 using dual-stack hosts, e.g. in Internet protocol version 4 [IPv4]/Internet protocol version 6 [IPv6] networks
• CPC Class Codes: H04L 45/66 Layer 2 routing, e.g. in Ethernet based MAN's
• CPC Class Codes: H04L 61/103 across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]

Abstract

A management apparatus according to embodiments of the present invention acquires, in a case where an internet protocol (IP) address of a network device having a plurality of network interfaces used for communicating with the network device is an IP address of an internet protocol version 6 (IPv6), all of values of an ipAddressIfIndex managed by the network device from the network device, and selects a value of an IfIndex corresponding to the IP address of the IPv6. In a case where the IP address of the network device is an IP address of an internet protocol version 4 (IPv4), the management apparatus acquires a value managed with an ipAdEntIfIndex from the network device.

Claims

1. A management apparatus capable of communicating with a network device including a plurality of network interfaces, the management apparatus comprising:

a determination unit configured to determine whether an internet protocol (IP) address of the network device used for communicating with the network device is an IP address of an internet protocol version 4 (IPv4) or an IP address of an internet protocol version 6 (IPv6);

a first request unit configured to issue, in a case where the determination unit determines that the IP address is the IP address of the IPv4, to the network device, an acquisition request for a first value used to identify a network interface managed, in correspondence with the IP address of the IPv4, by the network device with the IP address of the network device being specified;

a second request unit configured to issue, in a case where the determination unit determines that the IP address is the IP address of the IPv6, to the network device, one or more acquisition requests for a plurality of values each of which is used to identify a corresponding one of a plurality of network interfaces, each of the plurality of network interfaces corresponding to a different one of a plurality of addresses of the IPv4 and the IPv6 managed by the network device in a table;

a specification unit configured to specify a second value for identifying a network interface corresponding to the IP address of the IPv6 included in a response from the network device to the acquisition request issued by the second request unit; and

a third request unit configured to issue an acquisition request for a media access control (MAC) address to the network device with the first value included in a response from the network device to the acquisition request issued by the first request unit being specified or with the second value specified by the specification unit being specified.

2. The management apparatus according to claim 1, further comprising:

a fourth request unit configured to issue, to the network device, a plurality of acquisition requests for a plurality of values each of which is used to identify a corresponding one of the plurality of network interfaces of the network device, in a case where any value used to identify the network interface cannot be acquired from the network device with the acquisition request issued by the first request unit or the one or more acquisition requests issued by the second request unit,

wherein the specification unit specifies any value except for a third value corresponding to a loopback address from among a plurality of values included in a response from the network device to the request made by the fourth request unit.

3. A method for an apparatus that communicates with a network device having a plurality of network interfaces, the method comprising:

determining whether an IP address of the network device used for communicating with the network device is an IP address of an IPv4 or an IP address of an IPv6;

issuing, in a case where the IP address is determined to be the IP address of the IPv4, to the network device, a first acquisition request for a first value used to identify a network interface managed, in correspondence with the IP address of the IPv4, by the network device with the IP address of the network device being specified;

issuing, in a case where the IP address is determined to be the IP address of the IPv6, to the network device, one or more second acquisition requests for a plurality of values each of which is used to identify a corresponding one of the plurality of network interfaces, each of a plurality of network interfaces corresponding to a different one of a plurality of addresses of the IPv4 and the IPv6 managed by the network device in a table;

specifying a second value for identifying a network interface corresponding to the IP address of the IPv6 included in a response from the network device to the second acquisition request; and

issuing a third acquisition request for a MAC address to the network device with the first value included in a response from the network device to the first acquisition request being specified or with the second value being specified.

4. A non-transitory computer readable storage medium on which is stored a computer program for making a computer execute a method for an apparatus communicating with a network device which includes a plurality of network interfaces, the method comprising:

determining whether an IP address of the network device used for communicating with the network device is an IP address of an IPv4 or an IP address of an IPv6;

issuing, in a case where the IP address is determined to be the IP address of the IPv4, to the network device, a first acquisition request for a first value used to identify a network interface managed, in correspondence with the IP address of the IPv4, by the network device with the IP address of the network device being specified;

issuing, in a case where the IP address is determined to be the IP address of the IPv6, to the network device, one or more second acquisition requests for a plurality of values each of which is used to identify a corresponding one of the plurality of network interfaces, each of a plurality of network interfaces corresponding to a different one of a plurality of addresses of the IPv4 and the IPv6 managed by the network device in a table;

specifying a second value for identifying a network interface corresponding to the IP address of the IPv6 included in a response from the network device to the second acquisition request; and

issuing a third acquisition request for a MAC address to the network device with the first value included in a response from the network device to the first acquisition request being specified or with the second value being specified.