JP2023016993A5

JP2023016993A5 -

Info

Publication number: JP2023016993A5
Application number: JP2022195856A
Authority: JP
Filing date: 2022-12-07
Publication date: 2023-02-14
Anticipated expiration: 2038-03-06

Description

本発明の一様態は、情報処理装置であって、
経路が分からないＩＰアドレス宛のパケットを送信するデフォルトゲートウェイが設定された第１通信部と、
前記デフォルトゲートウェイが設定されていない第２通信部と、
前記第２通信部を介して特定プロトコルのパケットを送信する場合、前記第２通信部と同一のサブネットワークに属する第２ゲートウェイを通過しないように設定されたパケットを、前記第２通信部を介して送信し、前記第１通信部を介して前記特定プロトコルのパケットを送信する場合、前記第１通信部と同一のサブネットワークに属する第１ゲートウェイを通過するように設定されたパケットを、前記第１通信部を介して送信する制御手段と
を備えることを特徴とする。 One aspect of the present invention is an information processing device,
a first communication unit configured with a default gateway for transmitting packets addressed to an IP address whose route is unknown;
a second communication unit in which the default gateway is not set;
When transmitting a packet of a specific protocol via the second communication unit, a packet set not to pass through a second gateway belonging to the same subnetwork as the second communication unit is transmitted via the second communication unit. When transmitting a packet of the specific protocol via the first communication unit, the packet set to pass through the first gateway belonging to the same subnetwork as the first communication unit is transmitted through the first gateway. and a control means for transmitting via the 1 communication unit.

Claims

An information processing device,
a first communication unit configured with a default gateway for transmitting packets addressed to an IP address whose route is unknown;
a second communication unit in which the default gateway is not set;
When transmitting a packet of a specific protocol via the second communication unit, a packet set not to pass through a second gateway belonging to the same subnetwork as the second communication unit is transmitted via the second communication unit. When transmitting a packet of the specific protocol via the first communication unit, the packet set to pass through the first gateway belonging to the same subnetwork as the first communication unit is transmitted through the first gateway. 1. An information processing apparatus comprising: control means for transmitting data via a communication unit;

2. An information processing apparatus according to claim 1, wherein said specific protocol packet transmitted by said control means is a multicast packet.

3. The information processing apparatus according to claim 1, wherein the packet of the specific protocol is a search packet of a predetermined search protocol for device search using multicast communication.

4. The method according to any one of claims 1 to 3, wherein the specific protocol is SLP (Service Location Protocol) or LLMNR (Link-Local Multicast Name Resolution), and the packet of the specific protocol is a search packet. The information processing device described.

The information processing device further includes:
5. An information processing apparatus according to claim 3, further comprising display control means for displaying information based on a response result to said search packet.

6. An information processing apparatus according to claim 5, wherein said information includes at least information identifying a device found as a result of search and information indicating a communication unit used in said search.

The control means is
a response packet to the packet received via the second communication unit, when the response packet different from the packet of the specific protocol should be transmitted, based on the destination IP address to which the response should be transmitted; when determining that the device to which the destination IP address is assigned belongs to a subnetwork different from the subnetwork to which the second communication unit is connected, control is performed so as not to transmit a response packet to the received packet. 7. The information processing apparatus according to any one of claims 1 to 6.

A packet set not to pass through the second gateway is a packet whose lifetime is set to 1, and a packet set to pass through the first gateway is a packet whose lifetime is set to 2 or more. ,
8. The information processing apparatus according to any one of claims 1 to 7, wherein the value indicating the lifetime is a hop count indicating an upper limit of devices through which the packet can pass without being discarded.

9. The information processing apparatus according to claim 8, wherein the value indicating the lifetime is TTL (Time to Live) of IP protocol.

10. The information processing apparatus according to claim 1, wherein said information processing apparatus is an image recording apparatus having a recording unit for recording an image on a recording medium.

An information processing method performed by an information processing apparatus having a first communication unit configured with a default gateway for transmitting a packet addressed to an IP address whose route is unknown, and a second communication unit configured with no default gateway. hand,
When transmitting a packet of a specific protocol via the second communication unit, a packet set not to pass through a second gateway belonging to the same subnetwork as the second communication unit is transmitted via the second communication unit. When transmitting a packet of the specific protocol via the first communication unit, the packet set to pass through the first gateway belonging to the same subnetwork as the first communication unit is transmitted through the first gateway. 1. An information processing method characterized by transmitting via a communication unit.

2. A computer of an information processing apparatus having a first communication unit in which a default gateway for transmitting packets addressed to an IP address whose route is unknown and a second communication unit in which the default gateway is not set are provided. 11. A computer program for functioning as each means of the information processing apparatus according to any one of items 1 to 10.