RU2670378C2 - Ip unnumbered technology-based data transmission method and device - Google Patents

Abstract

FIELD: electrical communication engineering.SUBSTANCE: invention relates to network communication technologies. IP unnumbered technology-based data transmission method comprises: initialising a device and configuring IP addresses for all interfaces of the device; enabling an open shortest path first (OSPF) protocol, and adding all the interfaces into the OSPF protocol to determine the operating state of all the interfaces of the device; and transmitting a data packet according to an INDEX of an interface determined in the OSPF protocol when the operating state of one or more interfaces of all the interfaces is a use state.EFFECT: technical result consists in increase in the data transmission rate.9 cl, 12 dwg

Description

Technical field

The present invention relates to the field of technology routing and, in particular, to a method and device for the transmission of data based on the technology of unnumbered IP addresses.

Description of the prior art

OSPF Routing Protocol is a link state routing protocol for an IP network. The protocol uses the internal gateway protocol of the channel-state routing algorithm for operation within a single autonomous system. The OSPFv2 protocol adapted for IPv4 is defined in RFC 2328, and RFC 5340 defines OSPFv3 adapted for IPv6.

The OSPF interface is the connection between the router and the network that is being accessed. The interface receives information about its state through the lower level protocol and the routing protocol. An interface pointing to a network refers only to one IP address and one IP mask (only if it is not a point-to-point network based on unnumbered IP address technology). The interface is sometimes called a connection (channel).

The port multiplexing technology of unnumbered IP addresses is widely used in routers, which are commonly used to store IP addresses. Currently most high-end routers support this feature. The so-called “borrowing an IP address” is actually this: the interface on the router is not configured by the IP address, but the interface must be used, then one IP address is borrowed from other interfaces with IP addresses. If there are multiple IP addresses for an interface from which to borrow, then only the primary IP address can be borrowed. If there is no IP address for the interface from which the borrowing takes place, then the IP address of the borrowing interface is 0.0.0.0. Since the borrowing interface itself does not have an IP address and the route cannot be added, the route must be manually configured to reach the routers connection.

The technology of unnumbered IP addresses is widely used in routers that are commonly used to store IP addresses. Most of the relevant high-performance network devices support the unnumbered IP address feature. In this case, the two routers are connected through one logical port, the supported unnumbered IP address function must also correspond to using only one channel, and the corresponding configuration method can also be used only on one channel.

If there are multiple channels in two identical devices, the IP address of the various PTP ports can be configured to meet the requirements of multiple channels and the multiple PTP ports use only a small part of the IP addresses; and this use case can meet most current requirements. However, in a large network, each network node has multiple channels to connect; if the above method is used, multiple interfaces cannot use the unnumbered IP address function at the same time and for this it is necessary to spend multiple IP addresses.

The foregoing is used only to assist in understanding the technical scheme of the present invention and is not intended to recognize that the foregoing is prior art.

The essence of the invention

An embodiment of the present invention provides a method and apparatus for transmitting data based on an unnumbered IP address technology, which solves the technical problem that a plurality of interfaces in the routing technology cannot use the unnumbered IP address function at the same time to implement data transfer.

To solve the above technical problem, an embodiment of the present invention provides a method for transmitting data based on an unnumbered IP address technology, comprising the following steps:

device initialization and IP address configuration for all device interfaces;

Launch the Open Shortest Path Preference Protocol (OSPF) and add all interfaces to the OSPF protocol to determine the operational status of all interfaces of the device; and

transmission of a data packet in accordance with the INDEX interface defined by the OSPF protocol if the operating state of one or more of all interfaces is in the use state.

Alternatively, the device initialization and IP address configuration steps for all device interfaces include:

reading the IP configuration file and assigning the IP address to the device’s fixed interface; and

configuring the remaining interfaces, except for the fixed interface of the device, into the PTP-type interface and configuring the IP addresses of the other interfaces as the IP address of the fixed interface.

Alternatively, the step of transmitting a data packet in accordance with the INDEX interface defined by the OSPF protocol, if the operational state of one or more of all the interfaces is a state of use, includes:

setting the parameter IP_PKTINFO of the socket (SOCK) of the data packet while sending the data packet and sending the data packet through the INDEX interface defined by the OSPF protocol; and

determining, at the time of receiving the data packet, an interface for receiving the data packet in accordance with the INDEX attached to the received data packet, and processing the data packet through the interface for receiving the data packet.

Alternatively, after the device initialization step and the configuration of IP addresses for all device interfaces, the data transfer method based on the unnumbered IP address technology further includes:

negotiation of the MAC address and the IP address of the opposite end of the interface using the PPPoE protocol.

Alternatively, after the step of transmitting a data packet in accordance with the INDEX interface defined by the OSPF protocol, if the operating state of one or more of all interfaces is in the use state, the method of transmitting data based on the unnumbered IP address technology also includes:

using the OSPF protocol to compute and generate the interface route used to exit the route, look up the INDEX corresponding to the output of the route, and remove all the IP addresses of the route gateway.

In addition, an embodiment of the present invention further provides a data transmission device based on an unnumbered IP address technology, comprising:

initialization module, configured to: initialize the device and configure IP addresses for all interfaces;

an interface adding module, configured to: run an open shortest path preference protocol (OSPF) and add all interfaces to the OSPF protocol to determine the operational status of all interfaces of the device; and

a sending and receiving module, configured to: transmit a data packet in accordance with the INDEX interface defined by the OSPF protocol if the operational state of one or more of all the interfaces is in the usage state.

Alternatively, the initialization module is configured to read the IP configuration file and assign an IP address to the fixed interface of the device;

configuring the remaining interfaces, except for the fixed interface of the device, into the PTP-type interface and configuring the IP addresses of the other interfaces as the IP address of the fixed interface.

Alternatively, in this document, the sending and receiving module is configured to:

setting the parameter IP_PKTINFO of the socket (SOCK) of the data packet while sending the data packet and sending the data packet through the INDEX interface defined by the OSPF protocol; and

determining, at the time of receiving a data packet, an interface for receiving a data packet in accordance with an INDEX attached to a received data packet, and processing the data packet through an interface for receiving a data packet.

Alternatively, a data communications device based on unnumbered IP address technology further comprises:

the negotiation module, configured to: negotiate the MAC address and IP address of the opposite-end interface using the PPPoE protocol.

Alternatively, a data communications device based on unnumbered IP address technology further comprises:

a route generation module, configured to: use the OSPF protocol to calculate and generate an interface route used to exit a route, look up the INDEX corresponding to the route output, and delete all the IP addresses of the route gateway.

An embodiment of the present invention further provides a computer program and its carrier, wherein in this document the computer program includes a program command and, when the program command is executed by the data transfer device, the device can perform the above method of transferring data based on unnumbered IP address technology.

In embodiments of the present invention, by initializing a device and configuring IP addresses for all interfaces of the device, as well as sending and receiving a data packet in accordance with the INDEX interface in the state used in the OSPF protocol, it can be implemented that multiple interfaces simultaneously transmit data using the function unnumbered IP-addresses, and the goal of preserving IP-addresses is reached, which every day becomes less and less.

Brief description of graphic materials

FIG. 1 shows a block diagram of a first embodiment of a method for transmitting data based on the unnumbered IP address technology of the present invention;

in fig. 2 shows a detailed block diagram of the step of initializing a device and configuring IP addresses for all interfaces shown in FIG. one;

in fig. 3 shows a detailed block diagram of the step of sending and receiving a data packet in accordance with the INDEX interface in the state of use in the OSPF protocol shown in FIG. one;

in fig. 4 shows a block diagram of a second embodiment of a method for transmitting data based on the unnumbered IP address technology of the present invention;

in fig. 5 shows a block diagram of a third embodiment of a method for transmitting data based on the unnumbered IP address technology of the present invention;

in fig. 6 shows a diagram of functional modules of the first embodiment of a data transmission device based on the unnumbered IP address technology of the present invention;

in fig. 7 shows a diagram of the functional modules of the second embodiment of the data transmission device based on the unnumbered IP address technology of the present invention;

in fig. 8 is a diagram of functional modules of a third embodiment of a data transmission device based on the unnumbered IP address technology of the present invention;

in fig. 9 shows a diagram of the external connection of two network elements;

in fig. 10 shows a diagram of the external connection of a single network element with multiple network elements;

in fig. 11 shows a diagram of a ring connection of two network elements;

in fig. 12 shows the connection diagram of network elements whose interfaces are configured by different domain IDs.

Preferred embodiments of the present invention

An embodiment of the present invention will be described in detail in conjunction with the accompanying graphic materials. It should be noted that in the case of consistency, the embodiments in this application and the features in these embodiments can be combined to combine with each other as desired. In addition, despite the fact that the flowchart shows a sequence of logical operations, in some cases, the steps shown or described may be performed in a sequence that differs from that specified in this document. It should be understood that the specific embodiments described herein are used solely to explain the present invention and are not intended to limit the present invention.

FIG. 1 shows a block diagram of a first embodiment of a method for transmitting data based on the unnumbered IP address technology of the present invention. A method of transmitting data based on unnumbered IP address technology, as shown in FIG. 1 includes the following steps.

At step S10, the device is initialized and all interfaces are configured by IP addresses.

A fixed IP address is assigned to a device, a device IP address is assigned to a fixed device interface during device initialization, then other interfaces, except a fixed interface, are configured as PTP interfaces and the other interfaces are configured with an IP address the same as the fixed IP address. interface.

At step S20, the Open Shortest Path Preference Protocol (OSPF) is started and all interfaces are added to the OSPF protocol to determine the operating state of the fixed interface and the remaining interfaces.

The OSPF protocol is started, all interfaces are added to the OSPF protocol, and the operational status of all interfaces is evaluated to determine whether each interface is in the use state (UP) or non-use state (DOWN), and then the OSPF processing module is dynamically notified to start the processing module OSPF to automatically add or remove interfaces.

At step S30, the data packet is transmitted in accordance with the INDEX interface defined by the OSPF protocol if the operating state of one or more of all the interfaces is a use state.

If the destination address of the data packet is unicast, then SOCK option IP_PKTINFO is set to send the data packet and the data packet being sent is sent via the interface specified by INDEX. During the reception of the data packet, the interface for receiving the data packet is through an INDEX attached to the received data packet, and the data packet is processed. In the OSPF protocol, one interface in the use state corresponds to one INDEX.

In the present embodiment, it can be implemented that multiple interfaces simultaneously transmit data using the unnumbered IP address function first by initializing the device and configuring the IP address for all interfaces, then running OSPF and adding all device interfaces to OSPF to determine the working the status of all interfaces, and finally, sending and receiving a data packet in accordance with the INDEX interface in the use state defined by the protocol OSPF, thus achieving the goal of preserving IP addresses, which are getting smaller every day.

Referring to FIG. 2, in FIG. 2 shows a detailed block diagram of the step of initializing a device and configuring IP addresses for all interfaces shown in FIG. one.

In addition, step S10 includes the following.

In step S101, the IP configuration file is read and the IP address is assigned to the fixed interface of the device.

A fixed IP address is assigned to a device and a device IP address is assigned to a fixed device interface during device initialization.

At step S102, the remaining interfaces, except for the fixed interface of the device, are configured as an interface of the PTP type and the IP addresses of the other interfaces are configured as the IP address of the fixed interface.

The remaining interfaces, except for the fixed interface, are configured as a point-to-point (PTP) type interface, the IP address of the fixed interface is configured for the other interfaces, and the subnet mask is 255.255.255.255.

Referring to FIG. 3, in FIG. 3 shows a detailed block diagram of the step of sending and receiving a data packet in accordance with the INDEX interface in the state of use in the OSPF protocol shown in FIG. one.

Alternatively, step S30 includes the following.

At step S301, the parameter IP_PKTINFO of the socket (SOCK) of the data packet is set at the time of sending the data packet and the data packet is sent via the INDEX interface.

The interface in the state of use (UP) in the OSPF protocol sends an OSPF data packet, the IP_PKTINFO parameter of the socket (SOCK) of sending the data packet is set during the packet sending, and the data packet is sent via the specified INDEX interface.

At step S302, at the time of sending the data packet, an INDEX data packet is set to determine an interface for receiving the data packet, and the data packet is received by the determined interface.

The upstream interface in the OSPF protocol accepts the OSPF protocol data packet, and the interface for receiving the packet is through INDEX in the data packet at the time of receiving the packet.

Referring to FIG. 4, in FIG. 4 shows a block diagram of a second embodiment of a method for transmitting data based on the unnumbered IP address technology of the present invention.

Alternatively, in the second embodiment, after step S10, the method of transmitting data based on unnumbered IP address technology further includes the following:

in step S12, the MAC address and the IP address of the opposite end interface are negotiated using the point-to-point Internet Protocol (PPPoE) protocol.

The connection of the device to the opposite end is achieved through the PPPoE protocol, and the MAC address and the IP address of the opposite end interface are negotiated and configured.

Referring to FIG. 5, in FIG. 5 shows a block diagram of a third embodiment of a method for transmitting data based on the unnumbered IP address technology of the present invention.

Alternatively, in the third embodiment, after step S30, the method of transmitting data based on the technology of unnumbered IP addresses further includes the following.

At step S40, the OSPF protocol is used to calculate and generate the route of the interface used to exit the route, the INDEX corresponding to the output of the route is located, and all the IP addresses of the route gateway are deleted.

The OSPF protocol calculates the route, finds the INDEX corresponding to the output of the route while adding the route and adds the corresponding route without adding the IP address of the route gateway, and the data is routed from the interface specified by INDEX.

An embodiment of the present invention further provides a data transmission device based on unnumbered IP address technology, which includes a processor, a program memory and a data memory.

Referring to FIG. 6, in FIG. 6 shows a diagram of the functional modules of the first embodiment of the data transmission device based on the unnumbered IP address technology of the present invention.

In the first embodiment, a data transmission device based on unnumbered IP address technology includes the following.

The initialization module 60 is configured to initialize the device and configure IP addresses for all interfaces.

Module 60 initialization assigns a fixed IP address to the device, assigns the IP address of the device to the fixed interface of the device during device initialization, then configures the remaining interfaces, except the fixed interface, as the PTP interface, and assigns the rest of the interfaces the IP address as IP address of a fixed interface.

The interface adding module 70 is configured to run an open shortest path preference protocol (OSPF) and add all interfaces to the OSPF protocol to determine the operational status of all interfaces.

The interface adding module 70 starts the OSPF protocol, adds all interfaces to the OSPF protocol and evaluates the operational status of all interfaces to determine whether each interface is in the use state (UP) or non-use state (DOWN), and then dynamically notifies the OSPF processing module for launch the OSPF processing module to automatically add or remove interfaces.

The sending and receiving module 80 is configured to transmit a data packet in accordance with the INDEX interface defined by the OSPF protocol if the operating state of one or more interfaces from all interfaces is a use state.

If the sending destination of the data packet is unicast, then the send and receive module 80 sets the SOCK option IP_PKTINFO to send the data packet and sends the sent data packet through the interface specified by INDEX; while receiving a data packet, the send and receive module 80 finds an interface to receive a data packet and processes the data packet via INDEX attached to the received data packet. In the OSPF protocol, one interface in the use state corresponds to one INDEX.

In the present embodiment, it can be implemented that a plurality of interfaces simultaneously transmit data using the unnumbered IP address function first by initializing the device and configuring the IP address for all interfaces using the initialization module 60, then running OSPF and adding all the interfaces of the device to OSPF protocol for determining the operating state of the interfaces, and, finally, sending and receiving a data packet in accordance with the INDEX interface in the use state lzovaniya defined OSPF protocol, thus achieving the purpose of preservation of IP-addresses, which each day is becoming smaller.

Alternatively, the initialization module 60 is configured to:

read the IP configuration file and assign the IP address to the device’s fixed interface.

A fixed IP address is assigned to a device and a device IP address is assigned to a fixed device interface during device initialization.

The rest of the interfaces, except for the fixed interface of the device, are configured as PTP-type interfaces, and the IP addresses of the other interfaces are configured as the IP addresses of the fixed interface.

The remaining interfaces, except for the fixed interface, are configured as a point-to-point (PTP) type interface, the IP address of the fixed interface is configured for the other interfaces, and the subnet mask is 255.255.255.255.

Alternatively, the sending and receiving module 80 is configured to:

setting the parameter IP_PKTINFO of the socket (SOCK) of the data packet while sending the data packet and sending the data packet through the INDEX interface.

The interface in the state of use (UP) in the OSPF protocol sends an OSPF data packet, the IP_PKTINFO parameter of the socket (SOCK) of sending the data packet is set during the packet sending, and the data packet is sent via the specified INDEX interface.

During the reception of the data packet, the interface for receiving the data packet is determined in accordance with the INDEX attached to the received data packet, and the data packet is processed through a specific interface.

The upstream interface in the OSPF protocol accepts the OSPF protocol data packet, and the interface for receiving the packet is through INDEX in the data packet at the time of receiving the packet.

Referring to FIG. 7, in FIG. 7 shows a diagram of the functional modules of the second embodiment of the data transmission device based on the unnumbered IP address technology of the present invention.

Alternatively, in the second embodiment, the data transmission device based on the technology of unnumbered IP addresses further comprises:

module 90 approval, made with the possibility of negotiation of the MAC address and IP address of the interface of the opposite end using the PPPoE Protocol.

The connection of the device to the opposite end is achieved by applying the PPPoE protocol using the matching module 90, and the MAC address and the IP address of the opposite end interface are negotiated and configured.

Referring to FIG. 8, in FIG. 8 shows a diagram of the functional modules of the third embodiment of the data transmission device based on the unnumbered IP address technology of the present invention.

Alternatively, in a third embodiment, a data communications device based on unnumbered IP address technology further includes:

a route generation module 100, configured to use the OSPF protocol to compute and generate an interface route used to exit the route, search the INDEX corresponding to the route output, and remove the IP address of the route gateway.

The route generation module 100 calculates the route using the OSPF protocol, finds the INDEX corresponding to the output of the route while adding the route and adds the appropriate route without adding the IP address of the route gateway, and the data is routed from the interface specified by INDEX.

An embodiment of applying a data transmission method based on the unnumbered IP address technology of the present invention, interacting with two network elements, relates to FIG. 9. Network element A and network element B are interconnected via N channels, network element A reads the IP configuration file and assigns the IP address 192.176.1.1/24 to the fixed interface of network element A, then configures the IP addresses of the Ppp1-PppN interfaces as 192.176 .1.1 / 24, while configuring the interfaces Ppp1-PppN as the PTP-type interface, and the PTP-type interface is 192.80.1.1. The Ppp1-PppN interfaces start the PPROE protocol, negotiate to determine the IP address and the MAC address of network element B. After starting the devices of network element A and network element B, line 2 is connected first and then the remaining lines are connected. Since line 2 goes into a state of use earlier, OSPF protocol first calculates that the route is generated by line 2. Then both network element A and network element B will know the opposite end route through port PPP and PPP2 of line 2. At the same time, line 1 -N is also involved in the calculation of the OSPF protocol, and at this time, lines 1-N are treated as backup lines. If line 2 fails, OSPF performs a recalculation to search for another PPP port as the route output of the opposite end.

A data transmission method based on the unnumbered IP address technology of an embodiment of the present invention is also applicable in a situation where one network element is interconnected with a plurality of network elements. Referring to FIG. 10, the network element A is connected to the network element B, the network element C and the network element D through a plurality of channels; and the data transfer processes between network element A and network element B, network element A and network element B, network element A and network element C are the same as the transfer process between the two network elements shown in FIG. 9.

A data transmission method based on the unnumbered IP address technology of an embodiment of the present invention is also applicable in a situation where two network elements are connected in a ring manner. Referring to FIG. 11, the route loop is prevented due to the OSPF computation, and its data transfer process is the same as the transfer process between the two network elements shown in FIG. 9.

Referring to FIG. 12, if a network element device needs to separate different OSPF domains, both the interface IP address and the domain belonging to it must be modified as different interfaces to ensure that the IP address and domain ID of the interface do not conflict with IP -address and domain ID of other interfaces, that is, the requirement to separate networks through the domain ID in a large network can be fulfilled. In accordance with the OSPF protocol method, it is necessary to configure the remaining domains on the same router in the trunk domain (domain 0.0.0.0), and so the domain 0.0.0.1 appears. All routers connected to this interface have a domain 0.0.0.1. As shown in FIG. 9, the network element A and the network element B have two connections, the network element A refers to the backbone domain, and the network element B belongs to the domain 0.0.0.1. The ppp1 and PPP2 interfaces of network element A are connected to network element B. In this case, the IP addresses PPP1 and PPP2 of network element A must be modified as other IP addresses, and the IP address of the fixed interface cannot be borrowed. The IP address of PPP1 is 192.176.1.2, and at this time the IP address of PPP2 is borrowed from the IP address of PPP1. This way the preservation of the IP address can be guaranteed.

It will be understood by those skilled in the art that all or part of the steps in the above embodiment can be performed using the order of execution of the computer program, and the order of execution of the computer program can be stored on a computer-readable storage medium, and the order of execution of the computer program is performed on the appropriate hardware platform (such as a system, device, apparatus, component, etc.) and includes one of the steps of an embodiment of the method or a combination thereof on me perform.

Alternatively, all or part of the steps in the above embodiments may also be implemented using integrated circuits. These steps may be implemented in modules of the integrated circuit one after another, respectively, or a plurality of modules or steps within them may be embodied in one module of the integrated circuit for implementation. Thus, the present invention is not limited to any particular form of combination of hardware and software.

Each device / functional module / functional unit in the above embodiment can be implemented using universal computing equipment, and they can be embedded in a single computing equipment or distributed over a network that makes up many types of computing equipment.

Each device / function module / function block in the aforementioned embodiment may be stored on a computer readable storage medium if it is implemented in the form of a software function module and is sold or used as a separate product. The aforementioned computer-readable storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.

These modifications and substitutions that can be easily invented by those skilled in the art within the technical scope disclosed in the present invention should be implemented within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope described in the claims.

Industrial Applicability

An embodiment of the present invention further discloses a method and device for transmitting data based on unnumbered IP address technology, including: initializing a device and configuring IP addresses for all interfaces of the device; Launching OSPF and adding all interfaces to OSPF to determine the operational status of all interfaces and transmitting a data packet in accordance with the INDEX interface defined by the OSPF protocol, if one or more interfaces from all interfaces are in a state of use, it can be implemented that multiple interfaces simultaneously transmit data using the function of unnumbered IP addresses, thus saving IP -address, which every day is getting smaller.

Claims (26)

1. The method of data transmission based on the technology of unnumbered IP addresses, including: device initialization and IP address configuration for all device interfaces; negotiation of the MAC address and the IP address of the opposite end of the interface using the PPPoE protocol; Launch the Open Shortest Path Preference Protocol (OSPF) and add all interfaces to the OSPF protocol to determine the operational status of all interfaces of the device; and transmission of a data packet in accordance with the INDEX interface defined by the OSPF protocol if the operating state of one or more of all interfaces is in the use state. 2. The method according to p. 1, characterized in that the step of initializing the device and configuring IP addresses for all interfaces of the device includes: reading the IP configuration file and assigning the IP address to the device’s fixed interface; and configuring the remaining interfaces, except for the fixed interface of the device, into the PTP-type interface and configuring the IP addresses of the other interfaces as the IP address of the fixed interface. 3. The method according to p. 1, characterized in that the step of transmitting a data packet in accordance with the INDEX interface defined by the OSPF protocol, if the operating state of one or more of all the interfaces is a state of use, includes: setting the parameter IP_PKTINFO of the socket (SOCK) of the data packet while sending the data packet and sending the data packet through the INDEX interface defined by the OSPF protocol; and determining, at the time of receiving the data packet, an interface for receiving the data packet in accordance with the INDEX attached to the received data packet, and processing the data packet through the interface for receiving the data packet. 4. The method according to claim 1, wherein after the step of transmitting a data packet in accordance with the INDEX interface defined by the OSPF protocol, if the operating state of one or more of all the interfaces is in the state of use, it also includes using the OSPF protocol to compute and generate the interface route used to exit the route, look up the INDEX corresponding to the output of the route, and remove all the IP addresses of the route gateway. 5. A data transmission device based on unnumbered IP address technology, comprising: initialization module, configured to: initialize the device and configure IP addresses for all interfaces of the device; a negotiation module, configured to: negotiate the MAC address and IP address of the opposite-end interface using PPPoE protocol; an interface adding module, configured to: run an open shortest path preference protocol (OSPF) and add all interfaces to the OSPF protocol to determine the operational status of all interfaces of the device; and a sending and receiving module, configured to: transmit a data packet in accordance with the INDEX interface defined by the OSPF protocol if the operational state of one or more of all the interfaces is in the usage state. 6. The device according to p. 5, characterized in that the initialization module is configured to: read the IP configuration file and assign the IP address to the device’s fixed interface; and configuring the remaining interfaces, except for the fixed interface of the device, into the PTP-type interface and configuring the IP addresses of the other interfaces as the IP address of the fixed interface. 7. The device according to p. 5, characterized in that the sending and receiving module is configured to: setting the IP parameter of the PKTINFO socket (SOCK) of a data packet while sending a data packet and sending a data packet via the INDEX interface defined by the OSPF protocol; and determining, during reception of a data packet, an interface for receiving a data packet in accordance with an INDEX attached to a received data packet and processing the data packet through an interface for receiving a data packet. 8. The device according to claim 5, characterized in that it further comprises: a route generation module, configured to: use the OSPF protocol to calculate and generate the interface route used to exit the route, search for the INDEX corresponding to the output of the route, and remove all the IP addresses of the route gateway. 9. The media containing the software command, when executed by the device of the network element, the device starts to perform the method according to any one of claims. 1-4.

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