WO2015081785A1

WO2015081785A1 - Method and device for virtualized access

Info

Publication number: WO2015081785A1
Application number: PCT/CN2014/091331
Authority: WO
Inventors: 杨佩林; 孙芦晓
Original assignee: 华为技术有限公司
Priority date: 2013-12-04
Filing date: 2014-11-18
Publication date: 2015-06-11
Also published as: CN104703211A; CN104703211B

Abstract

Embodiments of the present invention provide a method and a device for virtualized access. By using a type-length-value (TLV) field in an extended packet based on the Intermediate System to Intermediate System (IS-IS) protocol, the extended packet based on the IS-IS protocol can carry an address information configuration request of an access device, so that when receiving the request packet carrying the address information configuration request, a virtual control node on a network can return, to the access device, a response packet carrying address information for configuration, and therefore, the access device configures an address according to the address information in the response packet, and accesses the virtual control node according to the configured address. In this manner, virtualized access based on the IS-IS protocol by an access device is implemented, which reduces configuration processes of the access device, significantly simplifies the configuration of the access device, and reduces network maintenance costs.

Description

Virtualized access method and device

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and device for virtualized access.

Background technique

In the mobile network, the Internet Protocol Radio Access Network (IPRAN) network is large in scale and complex in business, which brings great pressure on operation and maintenance management. Taking the mobile network scale of large and medium-sized cities as an example, according to the current network construction and operation and maintenance mode, a large number of geographically dispersed access devices need to be configured and managed point by point, resulting in complex network deployment and difficult business development.

Summary of the invention

The embodiments of the present invention provide a method and a device for virtualizing access, which are used to solve the problem that a large number of geographically dispersed access devices need to be configured and managed point by point, resulting in complicated network deployment and difficult service development.

The specific technical solutions are as follows:

A first aspect of the embodiments of the present invention provides a method for virtualizing access, including:

Sending a request message carrying an address information configuration request based on the intermediate system to the intermediate system IS-IS protocol to the virtual control node in the network;

Receiving a response message carrying the configured address information based on the IS-IS protocol returned by the virtual control node;

And performing address configuration according to the address information in the response packet, and accessing the virtual control node according to the configured address.

With reference to the first aspect, in a first possible implementation manner, after the address configuration is performed according to the address information in the response packet, the method further includes:

Sending, to the virtual control node, a request message carrying an update address information request based on an IS-IS protocol;

Receiving a response packet carrying the reconfigured address information based on the IS-IS protocol returned by the virtual control node;

Reconfiguring the address according to the reconfigured address information in the response packet, and accessing the virtual control node according to the reconfigured address; or

When the network is exited, the request message that is based on the IS-IS protocol and carries the release address information request is sent to the virtual control node.

With reference to the first aspect or the first possible implementation manner, in the second possible implementation manner, the IS-IS protocol-based request packet is sent to the virtual control node, and the method further includes:

Determining an address type corresponding to the address information that the access device can identify, and generating an address type identifier;

Transmitting, to the virtual control node, a request message that is based on the IS-IS protocol and carrying the address type identifier; or

Determining the device serial number of the access device;

Sending a request message based on the IS-IS protocol and carrying the device serial number to the virtual control node.

With reference to the first aspect, in a third possible implementation, the request message is specifically a Hello message IIH based on the IS-IS protocol, and the address information configuration request information is carried in the type length value TLV of the IIH message. Medium, or

The request message is specifically a link state message LSP based on the IS-IS protocol, and the address information configuration request information is carried in the type length value TLV of the LSP message.

A second aspect of the embodiments of the present invention provides a device for virtual access, including:

a sending module, configured to send, to the virtual control node in the network, a request message carrying an address information configuration request based on an intermediate system to an intermediate system IS-IS protocol;

a receiving module, configured to receive a response packet that carries the configured address information based on the IS-IS protocol returned by the virtual control node;

The configuration module is configured to perform address configuration according to the address information in the response packet, and access the virtual control node according to the configured address.

With reference to the second aspect, in a first possible implementation, the sending module is further configured to send, to the virtual control node, a request packet that carries an update address information request based on an IS-IS protocol, or exits the network. Sending, to the virtual control node, a request message that is based on the IS-IS protocol and carries a request for releasing the address information;

The receiving module is further configured to receive, by the virtual control node, a response packet that carries the reconfigured address information based on the IS-IS protocol;

The configuration module is further configured to re-configure an address according to the reconfigured address information in the response packet, and access the virtual control node according to the reconfigured address.

With reference to the second aspect or the first possible implementation manner, in a second possible implementation, the sending module is further configured to determine an address type corresponding to the address information that the access device can identify, and generate an address type identifier. Transmitting, to the virtual control node, a request message that is based on the IS-IS protocol and carrying the address type identifier; or

The sending module is further configured to determine a device serial number of the access device, and send a request message that is based on the IS-IS protocol and carries the device serial number to the virtual control node.

With reference to the second aspect, in a third possible implementation manner, the request packet sent by the sending module is specifically a Hello packet IIH based on the IS-IS protocol, and the address information configuration request information is carried in the IIH packet. The type length value TLV, or the request message is specifically a link state message LSP based on the IS-IS protocol, and the address information configuration request information is carried in the type length value TLV of the LSP message.

A third aspect of the embodiments of the present invention provides a virtual control device, including:

a receiving module, configured to receive a request message that carries an address information configuration request, which is sent by an access device and is based on an intermediate system to an intermediate system IS-IS protocol;

a configuration module, configured to configure address information for the access device that sends the request packet, and generate a response packet that carries the address information based on the IS-IS protocol;

And a sending module, configured to forward the response message to the access device.

With reference to the third aspect, in a first possible implementation, the receiving module is further configured to receive, by the access device, an IS-IS-based request packet carrying an update address information request;

The configuration module is further configured to reconfigure address information for the access device, and generate a response message carrying the reconfigured address information based on the IS-IS protocol.

With reference to the third aspect or the first possible implementation manner, in a second possible implementation, the configuration module is specifically configured to determine a characterization in a type length value TLV in the received request message. The address type identifier of the address information that can be identified by the access device, and the address information corresponding to the address type identifier is configured for the access device according to the address type identifier; or

The configuration module is further configured to release the address information configured for the access device when receiving the request message carrying the release address information request based on the IS-SI protocol sent by the access device.

In conjunction with the third aspect, in a third possible implementation, the device further includes:

The determining module is configured to determine, in the type length value TLV of the received request message, a device serial number used to identify the access device, and determine that the device serial number is a preset device serial number.

With reference to the third aspect, in a fourth possible implementation, the response packet generated by the configuration module is specifically a Hello message IIH based on the IS-IS protocol, and the address information is carried in the type of the IIH packet. The length value TLV, or the response message is specifically a link state message LSP based on the IS-IS protocol, and the address information is carried in the type length value TLV of the LSP message.

The embodiment of the present invention provides a method for virtualizing access, by extending the TLV field in the IS-IS protocol packet, so that the extended packet in the IS-IS protocol can carry the address information configuration request of the access device, thereby When the virtual control node in the network receives the request packet carrying the address information configuration request, the virtual control node can return a response packet carrying the configured address information to the access device, and then the access device according to the address in the response packet The information is configured to perform address configuration and access the virtual control node according to the configured address. This implements virtualized access of the access device based on the IS-IS protocol and reduces access devices. The configuration process reduces the complexity of network deployment, which reduces the difficulty of business development and reduces network maintenance costs.

DRAWINGS

1 is a schematic structural diagram of an IPRAN network according to an embodiment of the present invention;

2 is a flowchart of a method for virtualizing access according to an embodiment of the present invention;

3 is a flowchart of a method for virtualizing access according to an embodiment of the present invention;

4 is a schematic structural diagram of a virtualization access device according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a virtual control device according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of an access device according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a server according to an embodiment of the present invention.

detailed description

The current network technology introduces network virtualization technology. The basic idea of network virtualization technology is to concentrate the control plane. There is only one control center in the network, and all network behaviors are controlled by the control center. The centralized control plane may be a central device selected in the existing network, or a virtual control center formed by multiple devices, and the access routing device accesses the virtual control center. The virtual access control center configures a plurality of access routing devices to implement virtualized access to the access routing device.

In the IPRAN network, there are a large number of access rings and aggregation nodes (as shown in Figure 1). Therefore, if a virtual cluster is used for the aggregation node device, the ring, single-chain and single-node access networks are virtualized. The access of the network can greatly reduce the operation and maintenance cost of the IPRAN network and the complexity of the device configuration. To implement the virtualized access of the Cell Site Gateway (CSG) device in the IPRAN scenario, the CSG device needs to be virtualized from the virtual cluster. The device obtains an IP address, thereby implementing control of the CSG device by the control node in the virtual cluster.

Intermediate System to Intermediate System (IS-IS) is a link state protocol. Access devices in the network can pass IS-IS protocol. The device accesses the protocol packets between the devices to implement the adjacency between the access devices. In addition, the IS-IS protocol uses the shortest path first algorithm for route calculation. It occupies less network resources, and the route convergence and recovery time are fast. And so on. The packets in the IS-IS protocol are based on the TLV format and have good scalability. Therefore, it is a good advantage to implement the access device to the virtual control node through the IS-IS protocol, but the current In the IS-IS protocol, the device can only establish the adjacency relationship between the access devices. In the virtualized network environment, the access device cannot determine which device is the virtual control node through IS-IS packets. The address information is obtained from the virtual control node. As a result, the IS-IS protocol cannot support device virtualization access. As a result, the network deployment is complicated and the service development is difficult.

In the embodiment of the present invention, in order to solve the foregoing technical problem, and to implement the virtualized access of the access device under the IS-IS protocol, the method for virtualizing access of the device is provided in the embodiment of the present invention. The method of extending the IS-IS protocol allows the extended IS-IS protocol packet to carry the address information configuration request of the access device, and then the control node in the virtual cluster can be configured according to the address information of the access device. The request is configured to configure address information for the access device, and forward the response packet carrying the address information to the access device, thereby implementing virtualized access of the access device.

The technical solutions of the present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that the specific technical features of the embodiments and the embodiments of the present invention are merely illustrative and not limiting.

Embodiment 1:

FIG. 2 is a schematic diagram of a method for virtualizing access according to an embodiment of the present invention. The method is performed by an access device, and the method includes:

S201. Send, to the virtual control node, a request message that carries an address information configuration request, which is based on an intermediate system to an intermediate system IS-IS protocol.

The current IS-IS protocol mainly includes the following packet types:

The IS-IS Hello Packets (IIH) packet is used to establish and maintain the adjacency relationship of the access device.

Link State Packets (LSP) packets, which are mainly used for access settings. Exchange link state information between backups.

The Complete Sequence Number Packet (CSNP) message is used to confirm the latest received LSP between neighbors.

The Partial Sequence Number Packets (PSNP) packets are mainly used to confirm the latest received LSPs between neighbors, and can confirm multiple LSPs at one time.

Each of the above-mentioned packets is a packet based on a TLV format of a Length Length Valu (TLV), that is, each of the above-mentioned messages includes a TLV field, and the TLV field in the packet is used as a TLV field. The extensible field exists. In order to enable the access device to implement the virtualized access, the TLV field of the foregoing packet is extended. Specifically, the information TLV: Virtual_network_root_TLV is extended in the TLV field, and the TLV field is included in the TLV field. Address information configuration request.

It should be noted that the TLV field of any one of the foregoing packets may be extended, for example, an IIH packet or an LSP packet, because the IIH packet is used frequently, and the new access network is used. The access device needs to send an IIH packet to establish an adjacency relationship. Therefore, the TLV field in the extended IIH packet is generally used to carry the address information configuration request.

Of course, in addition to the TLV field of the commonly used packet, a new packet can be extended based on the IS-IS protocol. For example, an IS-IS route search packet (IS-IS Root Discovery Packet) can be extended. (IIRD), because the newly extended packet is a packet based on the IS-IS protocol, the IIRD packet can be identified by other devices on the network. Of course, if the address information configuration request is carried in the IIRD packet, The TLV field needs to be extended in the IIRD message so that the TLV field can carry the address information configuration request.

When the access device accesses the network and needs to obtain the address information from the virtual control node for configuration, the access device can send the request message carrying the address information configuration request to the network by multicast or broadcast. .

S202. Receive a response packet that carries the configured address information based on the IS-IS protocol returned by the virtual control node.

Since the request message is sent to the network in broadcast or multicast mode, it is in addition to the network. The virtual control node can receive the request message, and other access devices in the network can also receive the request message.

However, after the other access devices in the network receive the request message, the request message carries the address information configuration request, and the other access devices cannot respond according to the address information configuration request in the TLV field, so other access devices The request message will be ignored after receiving the request message.

After the virtual control node in the network receives the request message, the virtual control node has the address information configuration function, so the virtual control node responds to the request message, that is, the virtual control node according to the TLV field in the request message. The address information configuration request is carried, the address information is configured for the access device that sends the request message, and the response message based on the IS-IS protocol and carrying the address information in the TLV field is also generated, and then the response message is sent to the Access device.

Further, in order to enable the virtual control node to configure the address information that the access device can identify for the access device, the access device may determine the request packet carrying the address information configuration request before sending the request message to the virtual control node. The address type of the address information that can be identified by itself. The address type can be IPv4 or IPv6. Then, the address type identifier is added to the TLV field of the request packet. For example, the format of the TLV field that adds the address type identifier can be: IP_Address_Type_TLV. After the virtual control node configures the address information for the access device, the virtual control node reads the address type identifier in the TLV field of the request packet, and assigns the address information of the corresponding address type identifier to the access device according to the address type identifier. That is, the TLV field in the generated response message carries: IP_Control_Address_TLV or IPv6_Control_Address_TLV.

Further, in order to ensure the stability and security of the network, the virtual control node needs to verify the device serial number of the access device, and only the access device through which the device serial number is verified can configure the address information, and verify the failed access. The device can not be configured with the address information. Therefore, in the embodiment of the present invention, the access device in the network can also add its own device serial number in the request packet, and the format of the TLV field to which the serial number is added may be: Chassis_Serial_Number_TLV, After the device serial number is added to the request packet, the control node that receives the request packet parses and obtains the device serial number of the access device, and then the virtual control node determines whether the device serial number of the access device is a preset device. The serial number, if the device serial number of the access device is the preset device serial number, the virtual control node configures the address information for the access device. If the device serial number of the access device is not the preset device serial number, The virtual control node will ignore the request message.

Therefore, in the embodiment of the present invention, the request message sent to the virtual control node may carry the address type identifier and the device serial number corresponding to the access device in addition to the address information configuration request, and add the device serial number and the address type. The identification can enable the virtual control node to configure accurate address information for the access device.

S203. Perform address configuration according to the address information in the response packet, and access the virtual control node according to the configured address.

When the access device that sends the request packet receives the response packet returned by the control node in the network, the access device reads the address information configured by the control node from the TLV field in the response packet, and then the access device according to the access device Configure the configured address information and access the virtual control node according to the configured address. The address information here can be, but is not limited to, an IP address.

The access device that accesses the network through S201 to S203 can access the virtual control node through the address information configured by the virtual control node, thereby implementing virtualized access of the access device.

Further, in the embodiment of the present invention, after the step S203, if the access device needs to exit the network, the access device generates a request for releasing the address information and carries the IS-IS based on the IS-IS before the access device exits the network. The request message of the protocol, that is, the request message carries the Virtual_network_root_TLV field, and the release address information request is used to inform the virtual control node to release the address information configured for the access device, for example, when the access device needs to exit the network. The access device sends a request message carrying the request for releasing the IP address to the virtual control node. When the virtual control node receives the request message, the virtual control node releases the IP address, so that the released IP address information can be recycled. , saving network resources.

Further, in the embodiment of the present invention, after the step S203, if the address information of the access device is not used due to an address conflict or other reasons, the access device generates a request packet carrying the update address information request. , that is: the request message carries Virtual_network_root_TLV The field, the update address information request in the request message is used to notify the virtual control node to reconfigure an address information for the access device, and the access device receives the IS-IS-based, reconfigured address returned by the virtual control node. When the response packet of the information is received, the access device obtains the address information in the response packet, and reconfigures the address according to the obtained address information, and accesses the virtual control node according to the reconfigured address, so as to avoid the access device. The address conflict with other access devices causes the access device to disconnect from the virtual control node and disconnect the network.

In addition, the access device may also add an address type identifier to the request packet, in order to ensure that the virtual control node can re-allocate the accurate address information for the access device when transmitting the request packet carrying the update address information request. The address type identifier is the same as the address type identifier sent by the access device for the first time, so that the virtual control node can re-allocate the address information that the access device can recognize according to the address type identifier in the request packet.

In the foregoing embodiment, by extending the TLV field in the IS-IS protocol packet, the extended packet in the IS-IS protocol can carry the address information configuration request of the access device, thereby virtualizing in the virtual cluster in the network. When the control node receives the request packet carrying the address information configuration request, the virtual control node can return a response packet carrying the configured address information to the access device, and the access device performs address configuration according to the address information in the response packet. And accessing the virtual control node according to the configured address, thereby implementing virtualized access of the access device based on the IS-IS protocol, reducing the configuration process of the access device, reducing the complexity of the network deployment, and thereby reducing the complexity. The difficulty of business development reduces network maintenance costs.

Embodiment 2:

The embodiment of the present invention further provides a virtualized access method, where the execution subject of the method is a virtual control node in a virtual cluster in the network, as shown in FIG. 3, which is a device virtualized connection in the embodiment of the present invention. Flow chart of the method, the method includes:

S301. Receive a request message that carries an address information configuration request, which is sent by an access device and is based on an intermediate system to an intermediate system IS-IS protocol.

First of all, when networking, select a central device or multiple devices in the network. The virtual control node, when the virtual control node receives the request message of the IS-IS protocol, the virtual control node parses the request message, and the virtual control node reads whether the address information configuration request exists in the TLV field of the request message. If the request message carries an address information configuration request, the virtual control node performs S302. Of course, the request packet is an extended packet based on the IS-IS protocol, and the extension manner thereof is described in detail in the first embodiment, and details are not described herein again.

S302: Configure address information for the access device that sends the request packet, and generate a response packet carrying the address information based on the IS-IS protocol.

When the request message carries the address information configuration request, the virtual control node configures the address information for the access device according to the address information configuration request, where the address information may be, but not limited to, an IP address.

Further, if the request packet sent by the access device carries the address type identifier, that is, when the request packet carries the IP_Address_Type_TLV field, the virtual control node determines the address information that the access device can recognize according to the address type identifier, for example, It is said that the IPv4 address can be identified or the IPv6 address can be identified, so that the virtual control node generates different types of address information according to different address type identifiers, that is, generates an IP_Control_Address_TLV or an IPv6_Control_Address_TLV field.

Further, in the embodiment of the present invention, before step 302, there is an optional manner, that is, after the virtual control node receives the request message, the virtual control node parses whether the TLV field in the request message is If the device serial number is not carried in the TLV field, the virtual control node ignores the request packet. If the device serial number is carried in the TLV field, the virtual control node acquires the device. The serial number is matched, and the obtained device serial number is matched with the preset device serial number. If the obtained device serial number is not the preset device serial number, the virtual control node ignores the request message, and if it is obtained, When the device serial number is the preset device serial number, the virtual control node configures the address information for the access device according to the address type identifier in the request message.

After the virtual control node configures the address information for the access device, the virtual control node generates a response packet carrying the address information based on the IS-IS protocol, where the address information may be an IP address, where The response packet may be an IIH packet after the extended TLV field or an LSP packet after the extended TLV field, so that the address information configured for the access device may be carried in the TLV field of the IIH packet or the LSP packet. Finally, the virtual control node forwards the response message carrying the address information to the access device, so that the access device can perform address configuration according to the address information in the response message, and access the virtual control node according to the configured address.

S303. Forward the response packet to the access device.

Further, after the step S303, if the virtual controller further receives the request packet sent by the access device, the virtual control node parses the request packet, and then performs corresponding processing according to different requests carried in the request packet. The embodiment of the present invention includes at least the following two situations:

Case 1: If the virtual control node resolves to the request message carrying the request to reconfigure the address information, the virtual control node will reconfigure an address information for the access device that sends the request message, of course, if the request message is When the address type identifier is also carried in, the virtual control node configures the address information corresponding to the address type identifier for the access device according to the address type identifier, so that the configured address information can be recognized by the access device.

Case 2: If the virtual control node resolves to the request message carrying the request to release the address information, the virtual control node will release the address information originally configured for the access device, so that the address information will be reused by the virtual control node. In turn, the address information in the virtual node can be repeatedly used repeatedly, which saves network resources.

In the second embodiment, the virtual control node is configured to configure the address information for the access device according to the carrying configuration address information sent by the access device in the access network, and generate a response packet carrying the address information based on the IS-IS protocol. Finally, the response packet is forwarded to the access device, so that the access device can perform address configuration according to the address information in the response packet sent by the virtual control node, and then access the virtual control node according to the configured address, thus realizing the virtual Controlling the automatic configuration of the access device also implements virtualized access of the access device, which reduces the complexity of network deployment, thereby reducing the difficulty of service development and reducing network maintenance costs.

Embodiment 3

A virtualized access device is provided in the embodiment of the present invention. The embodiment of the present invention further provides a virtualized access device, as shown in FIG. 4, which is a virtualized access in the embodiment of the present invention. Schematic diagram of the device, the device includes:

The sending module 401 is configured to send, to the virtual control node in the network, a request message carrying an address information configuration request based on an intermediate system to an intermediate system IS-IS protocol;

The receiving module 402 is configured to receive, by the virtual control node, a response packet that carries the configured address information based on the IS-IS protocol;

The configuration module 403 is configured to perform address configuration according to the address information in the response packet, and access the virtual control node according to the configured address.

Further, in the embodiment of the present invention, the sending module 401 is further configured to send a request message carrying the update address information request based on the IS-IS protocol to the virtual control node, or send the IS-based to the virtual control node when exiting the network. The IS protocol carries the request message for releasing the address information request;

The receiving module 402 is further configured to receive, by the virtual control node, a response packet that carries the reconfigured address information based on the IS-IS protocol;

The configuration module 403 is further configured to re-configure the address according to the reconfigured address information in the response packet, and access the virtual control node according to the reconfigured address.

Further, in the embodiment of the present invention, the sending module 401 is further configured to determine an address type corresponding to the address information that the access device can identify, and generate an address type identifier, and send the IS-IS protocol based on the IS-IS protocol and carry the address type identifier to the virtual control node. Request message.

In addition, in the embodiment of the present invention, the sending module 401 is further configured to determine a device serial number of the access device, and send a request message that is based on the IS-IS protocol and carries the device serial number to the virtual control node.

Further, in the embodiment of the present invention, the request packet sent by the sending module 401 is specifically the Hello packet IIH based on the IS-IS protocol, and the address information configuration request information is carried in the type length value TLV of the IIH packet, or the request packet is requested. Specifically, the link state message LSP is based on the IS-IS protocol, and the address information configuration request information is carried in the type length value TLV of the LSP packet.

The sending module 401 and the receiving module 402 may be the same functional module.

Embodiment 4

A virtual control device is provided in the embodiment of the present invention. FIG. 5 is a schematic structural diagram of a virtual control device according to an embodiment of the present invention. Equipment includes:

The receiving module 501 is configured to receive, by the access device, a request message that carries an address information configuration request, which is based on an intermediate system to an intermediate system IS-IS protocol;

The configuration module 502 is configured to configure address information for the access device that sends the request packet, and generate a response packet carrying the address information based on the IS-IS protocol.

The sending module 503 is configured to forward the response message to the access device.

Further, in the embodiment of the present invention, the receiving module 501 is further configured to receive a request message that is sent by the access device and is based on the IS-IS protocol and carries the update address information request.

The configuration module 502 is further configured to reconfigure the address information for the access device, and generate a response message carrying the reconfigured address information based on the IS-IS protocol;

Further, in the embodiment of the present invention, the configuration module 502 is specifically configured to determine, in the type length value TLV of the received request message, an address type identifier that identifies the address information that the access device can identify, according to the address type identifier. Configure the address information of the corresponding address type identifier for the access device.

Further, in the embodiment of the present invention, the determining module may be further configured to be connected to the receiving module 501, and configured to determine a device sequence for identifying the access device in the type length value TLV in the received request message. No. The device serial number is determined to be the preset device serial number.

Further, in the embodiment of the present invention, the configuration module 502 is further configured to release the address information configured for the access device when receiving the request message carrying the release address information request based on the IS-SI protocol sent by the access device. .

Specifically, the response packet generated by the configuration module 502 is specifically a Hello message IIH based on the IS-IS protocol, and the address information is carried in the type length value TLV of the IIH packet, or the response packet is specifically based on the IS-IS protocol. The link state packet LSP, the address information is carried in the type length value TLV of the LSP packet.

Embodiment 5:

Corresponding to a virtualized access method in the first embodiment of the present invention, the embodiment of the present invention further provides an access device, and FIG. 6 is a schematic structural diagram of an access device according to an embodiment of the present invention. Access devices include:

The communication interface 601 is configured to send, to the virtual control node in the network, a request message carrying an address information configuration request based on the intermediate system to the intermediate system IS-IS protocol, and receive the IS-IS protocol based on the virtual control node. And a response message carrying the configured address information;

The processor 602 is configured to perform address configuration according to the address information in the response packet, and access the virtual control node according to the configured address.

Further, the communication interface 601 is further configured to send, to the virtual control node, a request message that carries an update address information request based on the IS-IS protocol, and receives an IS-IS protocol-based, bearer reconfiguration returned by the virtual control node. Response message of the address information;

The processor 602 is further configured to re-configure an address according to the reconfigured address information in the response packet, and access the virtual control node according to the reconfigured address.

Of course, in the embodiment of the present invention, the communication interface 601 is further configured to send a request message based on the IS-IS protocol and carrying the release address information request to the virtual control node when exiting the network.

Further, in the embodiment of the present invention, the processor 602 is further configured to determine an address type corresponding to the address information that the access device can identify, and generate an address type identifier, or determine a device serial number of the access device.

The communication interface 601 is configured to send a request message that is based on the IS-IS protocol and carries an address type identifier and/or a device serial number to the virtual control node.

It should be noted that the request message is specifically a Hello message IIH based on the IS-IS protocol, and the address information configuration request information is carried in the type length value TLV of the IIH message; or is based on IS-IS. The link state message LSP of the protocol is carried in the type length value TLV of the LSP message.

Example 6:

A server is provided in the embodiment of the present invention. FIG. 7 is a schematic structural diagram of a server according to an embodiment of the present invention. The server includes:

The first communication interface 701 is configured to receive, by the access device, a request message that carries an address information configuration request, which is based on an intermediate system to an intermediate system IS-IS protocol;

The processor 702 is configured to configure address information for the access device that sends the request packet, and generate a response packet that carries the address information based on the IS-IS protocol.

The second communication interface 703 is configured to forward the response message to the access device.

The first communication interface 701 and the second communication interface 703 may be the same communication interface.

Further, in the embodiment of the present invention, the first communication interface 701 is further configured to receive a request message that is sent by the access device and is based on the IS-IS protocol and carries the update address information request;

The processor 702 is further configured to reconfigure the address information for the access device, and generate a response message carrying the reconfigured address information based on the IS-IS protocol.

Further, in the embodiment of the present invention, the processor 702 is specifically configured to determine, in the type length value TLV of the received request message, an address type identifier that identifies the address information that the access device can identify, according to the address type identifier, The access device is configured with the address information of the address type identifier; or is configured to be released for the access device when receiving the request packet carrying the release address information request based on the IS-SI protocol sent by the access device. Address information.

In addition, in the embodiment of the present invention, the processor 702 is further configured to determine, in the type length value TLV in the received request message, a device serial number used to identify the access device, and determine that the device serial number is preset. devise serial number. When the device serial number in the request packet is a preset device serial number, the address information is configured for the access device.

It should be noted that the response packet is specifically the Hello packet IIH based on the IS-IS protocol, the address information is carried in the type length value TLV of the IIH packet, or the response packet is specifically based on the IS-IS protocol. Status packet LSP, the address information is carried in the type length value TLV of the LSP packet.

In addition, the virtual control node in the first embodiment and the second embodiment can be understood as the server in the sixth embodiment, and can be understood as the virtual control node running in the server in the sixth embodiment.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the preferred embodiment of the invention has been described, it will be understood that Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

A method for virtualizing access, comprising:

Sending a request message carrying an address information configuration request based on the intermediate system to the intermediate system IS-IS protocol to the virtual control node in the network;

Receiving a response message carrying the configured address information based on the IS-IS protocol returned by the virtual control node;

And performing address configuration according to the address information in the response packet, and accessing the virtual control node according to the configured address.
The method of claim 1, further comprising: after performing address configuration according to the address information in the response message,

Sending, to the virtual control node, a request message carrying an update address information request based on an IS-IS protocol;

Receiving a response packet carrying the reconfigured address information based on the IS-IS protocol returned by the virtual control node;

Reconfiguring the address according to the reconfigured address information in the response packet, and accessing the virtual control node according to the reconfigured address; or

When the network is exited, the request message that is based on the IS-IS protocol and carries the release address information request is sent to the virtual control node.
The method of claim 1 or 2, wherein the sending the request message based on the IS-IS protocol to the virtual control node further includes:

Determining an address type corresponding to the address information that the access device can identify, and generating an address type identifier;

Transmitting, to the virtual control node, a request message that is based on the IS-IS protocol and carrying the address type identifier; or

Determining the device serial number of the access device;

Sending a request report based on the IS-IS protocol and carrying the device serial number to the virtual control node Text.
The method according to claim 1, wherein the request message is specifically a Hello message IIH based on the IS-IS protocol, and the address information configuration request information is carried in a type length value TLV of the IIH message. or

The request message is specifically a link state message LSP based on the IS-IS protocol, and the address information configuration request information is carried in the type length value TLV of the LSP message.
A device for virtualized access, comprising:

a sending module, configured to send, to the virtual control node in the network, a request message carrying an address information configuration request based on an intermediate system to an intermediate system IS-IS protocol;

a receiving module, configured to receive a response packet that carries the configured address information based on the IS-IS protocol returned by the virtual control node;

The configuration module is configured to perform address configuration according to the address information in the response packet, and access the virtual control node according to the configured address.
The device according to claim 5, wherein the sending module is further configured to send, to the virtual control node, a request message carrying an update address information request based on an IS-IS protocol, or when exiting the network, Sending, to the virtual control node, a request message that is based on the IS-IS protocol and carries a request for releasing the address information;

The receiving module is further configured to receive, by the virtual control node, a response packet that carries the reconfigured address information based on the IS-IS protocol;

The configuration module is further configured to re-configure an address according to the reconfigured address information in the response packet, and access the virtual control node according to the reconfigured address.
The device according to claim 5 or 6, wherein the sending module is further configured to determine an address type corresponding to the address information that the access device can identify, and generate an address type identifier, and send the identifier to the virtual control node. a request message carrying the address type identifier based on the IS-IS protocol; or

The sending module is further configured to determine a device serial number of the access device, to the virtual control node Sending a request message based on the IS-IS protocol and carrying the device serial number.
The device according to claim 5, wherein the request message sent by the sending module is specifically a Hello message IIH based on the IS-IS protocol, and the address information configuration request information is carried in the type length of the IIH message. In the value TLV, the request message is specifically a link state message LSP based on the IS-IS protocol, and the address information configuration request information is carried in the type length value TLV of the LSP message.
A virtual control device, comprising:

a receiving module, configured to receive a request message that carries an address information configuration request, which is sent by an access device and is based on an intermediate system to an intermediate system IS-IS protocol;

a configuration module, configured to configure address information for the access device that sends the request packet, and generate a response packet that carries the address information based on the IS-IS protocol;

And a sending module, configured to forward the response message to the access device.
The device according to claim 9, wherein the receiving module is further configured to receive a request message that is sent by the access device and is based on an IS-IS protocol and carries an update address information request;

The configuration module is further configured to reconfigure address information for the access device, and generate a response message carrying the reconfigured address information based on the IS-IS protocol.
The device according to claim 9 or 10, wherein the configuration module is configured to determine, in the type length value TLV of the received request message, that the access device can identify An address type identifier of the address information, configured according to the address type identifier, the address information corresponding to the address type identifier for the access device; or

The configuration module is further configured to release the address information configured for the access device when receiving the request message carrying the release address information request based on the IS-SI protocol sent by the access device.
The device according to claim 9, wherein the device further comprises:

The determining module is configured to determine, in the type length value TLV of the received request message, a device serial number used to identify the access device, and determine that the device serial number is a preset device serial number.
The device according to claim 9, wherein the response message generated by the configuration module is specifically a Hello message IIH based on the IS-IS protocol, and the address information is carried in the IIH message. The type length value TLV, or the response message is specifically a link state message LSP based on the IS-IS protocol, and the address information is carried in the type length value TLV of the LSP message.