KR20180080547A - Network management method and system for remote wakeup of multiple IT devices - Google Patents

Abstract

According to the present invention, when an external node outside a subnet is linked with N internal nodes within the subnet on an IP network, the external node transmits a one-time wakeup request to one terminal instead of transmitting a wakeup request to each of the internal nodes in order to remotely wake up an internal node terminal which is in a standby state from the external node, thereby waking up all terminals which are internal nodes in the standby state. A network management method and system of the present invention comprises a procedure and means for waking up a terminal by allowing a type 1 restart terminal to perform a type 1 restart when a wakeup request for the type 1 restart terminal is transmitted from the outside of a subnet; and a procedure and means for allowing a type 2 restart terminal to perform a type 2 restart by receiving a broadcast message when the woken up type 1 restart terminal broadcasts a wakeup restart request in the subnet.

Description

Technical Field [0001] The present invention relates to a network management method and system for remote wakeup of a plurality of IT devices,

The present invention relates to network management for remotely waking up a plurality of IT devices in a standby state, and more particularly, to a network management method for remotely and collectively waking up a plurality of devices belonging to the same subnetwork (subnet) And transitioning them to the active state.

In general, the Internet network used by IT devices is composed of layers such as a transport layer, a network layer, a data link layer, and a physical layer.

TCP, UDP and other protocols are Layer 4, IP protocol is Layer 3, and Ethernet protocol is Layer 2. Each layer has a source node, which is a subject of communication, and a destination node, which is a communication target, and performs communication using protocols of respective layers.

Each node in the IP network has a unique IP address. At this time, the IP address is composed of the network ID and the host ID. That is, a part of the IP address is an ID of a subnet that is a unit network in the Internet, and a part of the IP address is a host ID for identifying each node in the same network specified by the subnet ID. The subnet mask is used to distinguish between the network ID and the host ID among the IP addresses. The subnet mask consists of 4 bytes, or 32 bits, and is expressed as 255.255.255.0. When the subnet mask is expressed in binary numbers, the portion indicated by 0 is the host ID and the portion indicated by 1 is the network ID. The remaining part of the network address is obtained by performing a bitwise AND operation on the subnet mask and the bit on the internet address. Within the same subnet, broadcast communication is allowed between each node and broadcast data packets are not transmitted outside the subnet. Therefore, when transmitting data by IP communication from a node outside the subnet to a node inside the subnet, it is not possible to simultaneously transmit an arbitrary message to all the nodes in the subnet using the broadcast.

In order to communicate with other devices on the Internet in order to communicate with other devices on the Internet, it is necessary to use the IP protocol in order to connect with other devices on the Internet. In addition to this, TCP, and UDP protocols.

In case of a device that is connected to the network in the disabled standby state and receives the remote request and activates the system, it is necessary to use the smallest possible resources in the standby state for the device that performs the full operation and the network connection, so that the power consumption can be reduced and it is provided to the CPU and most IO devices Off.

Wake on LAN (WOL) technology is being used to wake up a remote PC by activating a disabled PC through the LAN. WOL is operated by detecting bit stream of specific pattern coming into LAN port while only some functions of LAN port and controller are activated.

In the industry, the term 'wakeup' is often used also as a term 'rebooting', and the term 'wake up' is also often used in the industry. In the present invention, wakeup, 'In the same sense.

According to the related art, when the PC enters a standby state waiting for WOL data reception, the terminal device is inactivated. In this standby state (standby mode), the CPU and most of the devices are stopped, consuming minimal power, and partially powering the LAN devices connected to the network to sense bit streams. When a WOL data packet is detected, the LAN controller performs the function of waking up the CPU. After a certain period of time (several seconds to several minutes) has elapsed after the PC enters the deactivation standby state, the routing information for the target device is cleared from the routing information of the final router on the network side directly connected to the Layer 3 of the PC, The transmission of the IP packet is interrupted. Although routing information is permanently retained to prevent routing information from being erased, it is not widely used for a variety of reasons including complexity of network management, security, and access privileges. In addition to maintaining the routing information permanently, there is a method in which the UE periodically wakes up and updates the routing information. In this case, the UE must periodically wake up and perform the function of updating the routing information, thereby consuming additional power.

When a plurality of terminals are physically connected to the Internet at a position adjacent to each other, it takes a form generally as shown in FIG. When a plurality of terminals are woken remotely from a network 12 such as the Internet, a plurality of terminals 1 to n are connected to the network 12 through a router 13 on the same subnet as shown in FIG. 1, Up device 11 is also connected to the network 12.

Using the conventional technique, the wakeup apparatus 11 repeatedly transmits a wakeup request to each of the terminals 1 to n as shown in Fig. If there are 100 terminals in the same subnet, the wake-up apparatus 11 repeatedly transmits a wake-up request 100 times.

Korean Patent Publication No. 10-2015-0011754, Publication date February 2, 2015

The present invention relates to a method and system for waking up an internal node terminal that is in a standby state remotely from an external node when one external node outside the subnet is interworked with N internal nodes in a subnet on an IP network, Up request to a single terminal without transmitting an up request and wake up all terminals which are internal nodes in a standby state. The present invention proposes a network management method, a management system, a wakeup device and a terminal for achieving the above object.

In the present invention, the restart of the IT devices (terminals) in the standby mode is defined as two types, namely, type 1 restart and type 2 restart. 'Type 1 restart' is a reboot that is performed for a wakeup request transmitted from a device outside the subnet (for example, a wakeup device), and is transmitted through a router. Therefore, the type 1 restarting terminal transmits the wakeup request through a router A type-1 restart request is detected. The 'type 2 restart' is performed by detecting a broadcast restart request from the type 1 restart terminal at a terminal in the same subnet. To this end, a function for detecting a type 2 restart is set up before entering the standby mode.

In the present invention, UDP protocol based WOL magic packet of the IP network is utilized for implementing type 1 restart. UDP packets can be delivered through a router as a unicast protocol. The Magic Packet allocates MAC addresses of terminals according to predetermined rules. Each terminal has a unique MAC address, so it can specify a target terminal and generate a wakeup request.

Implementation of 2 type restart is implemented using WOL multicast. WOL multicast is performed when a multicast packet is detected in the waiting state. A multicast packet consists of a specific bit pattern. A LAN with WOL multicast set detects this bit pattern in a waiting state. 2 type restart is broadcast in the subnet without specifying the terminal and is detected in all terminals where WOL multicast is set up. At this time, the 2-type restart may define a separate bit pattern without using multicast. In some cases, a function of defining a separate bit pattern to be detected in a standby state may be provided according to a LAN device. In this case, a 2-type restart can be performed by defining a separate bit pattern in advance.

According to an aspect of the present invention, there is provided a network management method and a management system for remotely waking up a plurality of IT devices when the plurality of IT devices belonging to the same subnet are in a standby state on an IP network.

Here, the plurality of IT devices includes a type 1 restart terminal for performing a type 1 restart for a wakeup request transmitted from outside the subnet, and a type 2 terminal for performing a type 2 restart by detecting a restart request broadcasted from a terminal within the same subnet Wherein the first type restarting terminal performs a type 1 restart when the wakeup request is transmitted from the outside of the subnet to the first type restarting terminal and a procedure for waking up the first type restarting terminal, Type 1 restart type terminal broadcasts a wake-up restart request within the subnet, and a type 2 restart type terminal receives the broadcast message and performs a type 2 restart operation.

In addition, in the network management method and system according to the present invention, when any terminal among a plurality of IT devices makes a wakeup type request, if there is no terminal designated as a type 1 restart terminal in the subnet, Type restarting terminal, and if the wake-up type request is transmitted from a terminal belonging to the same subnet as the type 1 restarting terminal, the terminal is determined as a type 2 restarting terminal. When a wakeup request is transmitted to the first type restarting terminal when waking up the terminals of the subnet, the first type restarting terminal which received the wakeup request detects it and restarts the first type, transmits the request to the subnet, And sending a wakeup request to the restarting terminal.

When the type-1 restart terminal requests the wake-up type request, the request includes an IP address, a subnet mask, and a MAC address of the corresponding terminal.

Also, the 1-type restart may be performed using a UDP protocol-based WOL magic packet of the IP network, and the 2-type restart may be performed using WOL multicast. Alternatively, the type 1 restart may be performed utilizing a UDP protocol based WOL magic packet of the IP network, and the type 2 restart may be performed utilizing a predefined bit pattern.

A wake-up device outside the subnet may request a wake-up type or transmit a wake-up request to the terminal. The wake-up device may transmit a wake-up request to a terminal When the wakeup request is transmitted, the Type 1 restarting terminal is woken up by the type 1 restarting procedure, and this Type 1 restarting terminal broadcasts the type 2 restart request in the subnet, and the broadcasted message is recognized by all the terminals in the subnet Type 2 restart is performed.

The wake-up device designates the first inquiry terminal as a type 1 restarting terminal when there is no terminal designated as a type 1 restarting terminal in the corresponding subnet when a wakeup type request is made from any of the plurality of IT devices Means for determining the terminal as a 2-type restarting terminal upon receiving a wake-up type request transmitted from a terminal belonging to the same subnet as the 1-type restarting terminal; Upon receiving a wake-up request, the first-type restarting terminal, upon receiving a wake-up request, detects the first-type restarting terminal and transmits the request to the subnet after restarting the first- Lt; RTI ID = 0.0 > wake-up < / RTI >

In addition, the wakeup device may include a network information collector for storing and managing the IP address, the subnet mask, and the MAC address of the corresponding terminal included in the wakeup type request transmitted by the terminal; A wake-up type responding unit for receiving a wake-up type request from the terminal and determining whether the corresponding terminal corresponds to the type 1 restart or the type 2 restart, and for responding the result to the terminal; And a 1-type restart requestor for transmitting a wake-up request for waking up a terminal in the subnet using the stored IP address, the subnet mask, and the MAC address.

The plurality of IT device terminals each include a wake-up type for transmitting a wake-up type request including an IP address of the terminal, a subnet mask, and a MAC address inherently possessed by the LAN in order to perform a wakeup type query to the wake- Query period; A wake-up set-up unit for setting a re-start type of the terminal according to the response when the wake-up device is designated as a type 1 or type 2 restart terminal and receives a wake-up type response; A wake-up detector in which the terminal receives a wake-up request from a wake-up device to perform a wake-up procedure; If the wakeup type requesting terminal is designated as a type 1 restarting terminal, when a wakeup request is received from the wakeup device, the wakeup detector detects the wakeup type requesting terminal and performs a type 1 rebooting procedure and then broadcasts a type 2 rebooting wakeup request within the subnet Type restarting requestor for causing the wake-up detector of the 2-type restarting terminal to detect and wake up.

In addition to the above network management method and system, the present invention also has a technical scope for a wake-up device and each terminal used in the method and system. The configuration and operation of the wake-up device and each terminal will be described in detail below with reference to the embodiments described with reference to the drawings. In addition, the above-described network management method and system will become more apparent from the following description of the embodiments.

In order to wake up a plurality of internal nodes (IT device terminals) in a standby state on an external node of a subnet, an external node (wake-up device) does not need to transmit a wake- . Therefore, it is possible to wake up the entire internal node more quickly, and it is possible to greatly reduce the amount of data managed by the external node because information about some nodes is maintained without maintaining information about each internal node.

1 is a diagram showing an example of a network environment for waking up a terminal through a network.
2 is a diagram illustrating an example of remote wakeup using the prior art.
3 is a diagram illustrating a delivery structure of an IT device wakeup request according to an embodiment of the present invention.
4 is an example of a detailed functional configuration of a wake-up device and each terminal according to an embodiment of the present invention.
FIG. 5 is a diagram showing a flow of data between respective components of the invention in an embodiment of the present invention. FIG.
6 is a flowchart illustrating a process flow of a wake-up device in an embodiment of the present invention.
7 is a flowchart illustrating a process flow of a terminal according to an exemplary embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 shows a flow of a wake-up request in a system to which the present invention is applied. The wake-up apparatus 11 transmits a wake-up request to one terminal a set as a type 1 restart target among the terminals in the subnet. Type 1 restart The terminal a wakes up by a type 1 wakeup request and broadcasts a type 2 restart request within the subnet. The broadcasted message is recognized by all the terminals 1 to n in the subnet and the type 2 restart is performed at each terminal. As a result, the wake-up request transmitted for the remote wake-up is a 1-type restart request and the 2-type restart request, and the wake-up request for all terminals in the subnet is completed.

4 shows an internal functional block of a wake-up device and a terminal according to the present invention. The wake-up device 11 outside the subnet is composed of a network information collector 111, a wake-up type responder 112, and a type 1 restart requestor 113. The network information collector 111 stores and manages the IP address, the subnet mask, and the MAC address of the type 1 restart target terminal extracted from the wakeup type query coming from the terminal. The wake-up type responding unit 112 receives a wake-up type inquiry of the terminal and determines whether the corresponding terminal corresponds to the type 1 restart or the type 2 restart and responds the result to the terminal. The 1-type restart requestor 113 generates a WOL magic packet used when waking up a terminal in a subnet using a stored IP address, a subnet mask, and a MAC address, and transmits the WOL magic packet to the target address of the target terminal using UDP .

Meanwhile, the terminals 1 to n existing in the subnet include a wakeup type inquirer 141, a wakeup set up device 142, a type 2 restart requestor 143, and a wakeup detector 144 . The wakeup type queryer 141 sends a query to the wakeup device before the terminal enters the standby mode. At this time, the query includes the IP address of the terminal, the subnet mask, and the MAC address inherently possessed by the LAN. Upon receiving a 1 or 2 response to the query, the wake-up set-up 142 sets the reboot type to be sensed by the wake-up detector 144 in a waiting state and enters a wait state. Here, in the case of the first type restart terminal, the first type wakeup request transmitted from the wakeup detector 144 is detected and awakened, and the second type restart requestor 143 generates a multicast packet and broadcasts it in the subnet. In case of the type 2 restarting terminal, the wake-up detector 144 detects this and wakes up. In the case of the 2-type restarting terminal, the 2-type restart requesting unit 143 is not activated because it is not required to be executed.

FIG. 5 shows a data flow between respective components of a system to which the present invention is applied. When an arbitrary terminal queries a restart type (wakeup type request) 51, if there is no terminal designated as a 1-type restart terminal in the corresponding subnet, the initial query terminal is set as type 1, and if a 1-type restart terminal is designated, And stores the IP address, subnet mask, and MAC address of the corresponding terminal, and responds to the terminal that the wakeup type is type 1 (52). The terminal designated by Type 1 restart sets the environment to receive the request of the wake-up device and enters a standby mode (53). After that, the terminal querying the wakeup type 54 receives a response from the wakeup device in response to the type 2 restart (55). The wake-up device uses the stored IP address, the subnet mask, and the MAC address to determine whether the inquiry is coming from a terminal belonging to the same subnet as the type 1 terminal, and responds by determining the type 2 restart. The 2-type restarting terminal sets the WOL multicast and enters the standby mode (56). Thereafter, when the wakeup device attempts to wake up the terminals of the corresponding subnet, it transmits a wakeup request made in the WOL magic packet to the IP address of the type 1 restarting terminal or the like (57). Upon receiving the wakeup transmission, the type 1 restarting terminal senses and restarts it, generates a multicast packet after rebooting, and transmits the generated multicast packet to the subnet (58).

6 is a flowchart showing a process of performing a process of the wakeup device. And waits for a wakeup type query coming from the terminal (61). When the query arrives, the IP address, subnet mask, and MAC address are extracted from the query (62). The network ID is extracted using the extracted IP address, subnet mask, and MAC address, and it is determined whether the corresponding network ID is a new network ID not yet registered (63). In the case of a new network, the network ID is stored (64) and used to determine the terminal of the same network in the future. When storing the network ID, it also stores the IP address, subnet mask, and MAC address necessary for the wakeup request. For this new network, a wakeup type response is set up at type 1 restart (65) and the wakeup type is sent (67). And then returns to the initial wakeup type query wait phase (68). If it is not a new network in step 63, a wake-up type response is set up in a type 2 restart (66) and the wake-up type is transmitted (67).

FIG. 7 shows a process flow of a terminal to be restarted. The wake-up type is inquired before entering standby mode (71). When a response is received waiting for a wakeup type response (72), the corresponding response is confirmed as a type 1 rewrite type 2 type rewind (73). If the type 1 restart is performed, the WOL magic packet is set up and the wakeup standby mode is entered ). Upon awakening from the standby mode, a multicast packet is generated for requesting restart of the 2-type restarting terminal and is transmitted within the subnet (75). If the wakeup type response is a type 2 restart in step 73, the WOL multicast is set up and the wakeup standby mode is entered (76).

The above-described embodiments are merely examples for actual implementation of the technical idea of the present invention. The technical scope of the present invention is determined by the rational interpretation of the claims set forth below.

Claims (16)

A network management method for remotely waking up a plurality of IT devices belonging to the same subnet on an IP network when the plurality of IT devices are in a standby state,
The plurality of IT devices includes a type 1 restart terminal for performing a type 1 restart for a wakeup request transmitted from outside the subnet, a type 2 terminal for performing a type 2 restart by detecting a restart request broadcasted from a terminal in the same subnet, A restart terminal,
The network management method
Wherein the type 1 restart terminal performs a type 1 restart when the wake-up request is transmitted from the outside of the subnet to the type 1 restart terminal, and a wake-up type 1 restart terminal broadcasts a wakeup restart request within the subnet Wherein the type 2 restarting terminal receives a broadcast message and performs a type 2 restart when receiving the broadcast message. The method according to claim 1,
When any terminal among a plurality of IT devices requests a wake-up type, if there is no terminal designated as a 1-type restart terminal in the subnet, the terminal that made the first query is designated as a 1-type restart terminal, When a wake-up request is transmitted from a terminal belonging to the same subnet, a procedure for determining the terminal as a 2-type restarting terminal,
When a wakeup request is transmitted to the first type restarting terminal when waking up the terminals of the subnet, the first type restarting terminal which received the wakeup request detects it and restarts the first type, transmits the request to the subnet, Further comprising the step of transmitting a wake-up request to the restarting terminal. The method according to claim 1, wherein when the type-1 restart terminal requests a wake-up type request, the request includes an IP address, a subnet mask, and a MAC address of the corresponding terminal. The method according to any one of claims 1 to 3, wherein the type 1 restart is performed using a UDP protocol based WOL magic packet of an IP network, and the type 2 restart is performed using WOL multicast A network management method for remote wake-up of a plurality of IT devices. 4. The method of any one of claims 1 to 3, wherein the type 1 restart is performed using a UDP protocol based WOL magic packet of the IP network, and the type 2 restart is performed using a predefined bit pattern Wherein the plurality of IT devices are connected to each other via a network. A network management system for remotely waking up a plurality of IT devices in a standby state when a plurality of IT devices belonging to the same subnet on an IP network are in a standby state,
The plurality of IT devices detect a restart request broadcasted by a type 1 restart terminal that performs a type 1 restart for a wakeup request transmitted from a device outside the subnet and a terminal within the same subnet and performs a type 2 restart Including a 2-type restart terminal,
When the wake-up device transmits a wake-up request to one terminal set as the type 1 restart target among the terminals in the subnet, the type 1 restart terminal is woken up by the type 1 restart operation, Type re-start request is broadcasted and the broadcasted message is recognized by all the terminals in the subnet so that the type 2 restart is performed. 7. The apparatus of claim 6, wherein the wake-up device
When any one of the plurality of IT devices makes a wakeup type request to the wakeup device, if there is no terminal designated as a 1-type restarting terminal in the corresponding subnet, the initial query terminal is designated as a 1-type restarting terminal, Type restarting terminal when receiving a wake-up type request transmitted from a terminal belonging to the same subnet as the type restarting terminal,
Upon receiving a wake-up request, the first-type restarting terminal, upon receiving a wake-up request, detects the first-type restarting terminal and transmits the request to the subnet after restarting the first- Type restarting terminal of the plurality of IT equipment remote wake-up terminals. The method as claimed in claim 6, wherein, when the type-1 restart terminal sends a wake-up type request to the wake-up device, the request includes an IP address of the corresponding terminal, a subnet mask and a MAC address, Network management system. 9. The method according to any one of claims 6 to 8, wherein the type 1 restart is performed using a UDP protocol based WOL magic packet of an IP network, and the type 2 restart is performed using WOL multicast A network management system for remote wake-up of multiple IT devices. 9. The method of any one of claims 6 to 8, wherein the type 1 restart is performed using a UDP protocol based WOL magic packet of the IP network, and the type 2 restart is performed using a predefined bit pattern And a network management system for remote wake-up of a plurality of IT devices. 9. A device according to any one of claims 6 to 8, wherein the wake-up device
A network information collector for storing and managing the IP address, the subnet mask and the MAC address of the corresponding terminal included in the wakeup type request transmitted by the terminal,
A wake-up type transponder for receiving a wake-up type request from the terminal and determining whether the corresponding terminal corresponds to type 1 restart or type 2 restart, and for responding the result to the terminal,
And a 1-type restart requestor for sending a wake-up request for waking up a terminal in a subnet using the stored IP address, subnet mask, and MAC address. 9. The method according to any one of claims 6 to 8, wherein the terminals included in the plurality of IT devices
A wake-up type query unit for transmitting a wake-up type request including an IP address of the terminal, a subnet mask, and a MAC address unique to the LAN in order to perform a wakeup type query with the wakeup apparatus,
A wake-up set-up unit for setting up a re-start type of the terminal according to the response when the wake-up type device receives a wake-up type response from the wake-up device,
A wake-up detector in which the terminal receives a wake-up request from a wake-up device to perform a wake-up procedure,
If the wakeup type requesting terminal is designated as a type 1 restarting terminal, when a wakeup request is received from the wakeup device, the wakeup detector detects the wakeup type requesting terminal and performs a type 1 rebooting procedure and then broadcasts a type 2 rebooting wakeup request within the subnet Type restarting requestor for causing the wake-up detector of the 2-type restarting terminal to detect and wake up. 1. A wake-up device for remotely waking up a plurality of IT devices belonging to the same subnet on an IP network,
When any one of the plurality of IT devices receives a wake-up type request, receives a wake-up type request and designates the first query terminal as a 1-type restart terminal if there is no terminal specified as a 1-type restart terminal in the corresponding subnet, Means for determining that the terminal is a 2-type restarting terminal upon receiving a wake-up type request transmitted from a terminal belonging to the same subnet as the terminal,
When a wakeup of the terminals of the corresponding subnet is to be performed, the wakeup request is transmitted to the first type restarting terminal, and the first type restarting terminal which received the wakeup request senses the wakeup request and restarts the first type and transmits the request to the subnet And a means for making a wake-up request to the 2-type restarting terminal. 14. The system of claim 13, wherein the wake-up device
A network information collector for storing and managing the IP address, the subnet mask and the MAC address of the corresponding terminal included in the wakeup type request transmitted by the terminal,
A wake-up type transponder for receiving a wake-up type request from the terminal and determining whether the corresponding terminal corresponds to type 1 restart or type 2 restart, and for responding the result to the terminal,
Further comprising a type 1 restart requestor for transmitting a wake up request for waking up a terminal in a subnet using the stored IP address, subnet mask and MAC address. A terminal included in a plurality of IT devices belonging to the same subnet on an IP network connected with a wakeup device and in a standby state,
Means for making a wake-up type request to the wake-up device and performing a wake-up setting when the wake-up type response from the wake-up device to a type 1 restart terminal or a type 2 restart terminal occurs;
When a wakeup request is received from the wakeup device when the wakeup device is designated as a type 1 restarting terminal, it is woken up by a type 1 restarting procedure, broadcasts a restart request to another 2 type restarting terminal in the subnet, Means for causing the type 2 restart to be performed,
Type restarting procedure when the wake-up request is received from the first restarting terminal when the second restarting terminal is designated as the second-type restarting terminal. 16. The method of claim 15,
A wake-up type inquiry unit for transmitting a wake-up type request including an IP address of the terminal, a subnet mask, and a MAC address inherently possessed by the LAN in order to make a wake-up type request to the wake-
A wake-up set-up unit for setting up a re-start type of the terminal according to the response when the wake-up type device receives a wake-up type response from the wake-up device,
A wake-up detector for receiving a wake-up request from a wake-up device to perform a wake-up procedure,
If the wakeup type requesting terminal is designated as a type 1 restarting terminal, when a wakeup request is received from the wakeup device, the wakeup detector detects the wakeup type requesting terminal and performs a type 1 rebooting procedure and then broadcasts a type 2 rebooting wakeup request within the subnet Type restarting requesting unit for causing the wake-up detector of the 2-type restarting terminal to detect and wake up.

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