WO2014019196A1

WO2014019196A1 - Topology information processing method and device

Info

Publication number: WO2014019196A1
Application number: PCT/CN2012/079588
Authority: WO
Inventors: 王军; 胡杰晖; 吴小前; 熊怡
Original assignee: 华为技术有限公司
Priority date: 2012-08-02
Filing date: 2012-08-02
Publication date: 2014-02-06
Also published as: CN102907052A

Abstract

Embodiments of the present invention provide a topology information processing method and device. In one aspect of the embodiments of the present invention, a first control device obtains topology information of a first domain to which the first control device belongs, the first domain being a domain formed by the first control device and a network device managed by the first control device; and the first control device receives topology information of a second domain to which a second control device belongs, the topology information being sent by the second control device, and the second domain being a domain formed by the second control device and a network device managed by the second control device, so that the first control device can send topology information comprising the topology information of the first domain to the second control device, which can avoid the problem in the prior art that processing load of a control device increases because the control device needs to collect topology information of the entire network through a network device managed by the control device, thereby reducing the processing load of the control device, and being conducive to expanding the network scale.

Description

Topological information processing method and device

TECHNICAL FIELD The present application relates to communication technologies, and in particular, to a topology information processing method and device. Background technique

With the development of the Internet, distributed systems cannot better meet the needs of network scalability and management. Therefore, a centralized system with separate control and forwarding emerges, for example: OpenFlow system. The control device (for example, the Master, etc.) and the network device managed by the control device (for example, an AP (Access Point), etc.) jointly complete the packet forwarding process that is completely controlled by the switch/router, thereby implementing data forwarding and routing control. Separation. As the network device increases, the control device (Master) can use a protocol such as an Interior Gateway Protocol (IGP) or a Link Layer Discovery Protocol (LLDP), and the network device managed by the control device Collect topology information for the entire network.

However, since the control device needs to collect the topology information of the entire network via the network device managed by the control device, the processing load of the control device is increased, thereby making the network size limited. Summary of the invention

Aspects of the present application provide a topology information processing method and apparatus for reducing the processing load of a control device.

An aspect of the present application provides a topology information processing method, the method being applied to a centralized system for controlling and forwarding separate, the system comprising a first control device and a second control device, and the first control device The managed network device and the network device managed by the second control device, the method includes:

The first control device obtains topology information of the first domain to which the first control device belongs, where the first domain is a domain formed by the first control device and a network device managed by the first control device;

Receiving, by the first control device, the second control device that is sent by the second control device The topology information of the second domain, where the second domain is a domain formed by the second control device and the network device managed by the second control device;

The first control device sends topology information including topology information of the first domain to the second control device.

The aspect as described above, and any possible implementation manner, further provide an implementation manner, where the topology information of the topology information that includes the first domain is that the first control device uses the first domain The topology information obtained by summarizing the topology information and the topology information of the second domain.

The above-mentioned aspect and any possible implementation manner further provide an implementation manner, where the topology information of the topology information that includes the first domain is the first domain obtained by the first control device Topological information.

The above-mentioned aspect and any possible implementation manner further provide an implementation manner, where the first control device obtains the topology information of the first domain to which the first control device belongs, including:

The first control device uses the IGP to obtain topology information of the first domain to which the first control device belongs; or

The first control device uses LLDP to obtain topology information of the first domain to which the first control device belongs.

In another aspect of the present application, a topology information processing method is provided, where the method is applied to a centralized centralized system for controlling and forwarding, and the system includes a first control device, a second control device, and a topology collection device, and The network device managed by the first control device and the network device managed by the second control device, the method includes:

Receiving, by the first control device, topology information of the first domain to which the first control device belongs, where the first domain is the first control device and the first control device The domain of the network device;

Receiving, by the second control device, topology information of the second domain to which the second control device belongs, where the second domain is managed by the second control device and the second control device The domain of the network device;

The topology collection device sends topology information including topology information of the first domain to the second control device;

The topology collection device sends topology information including topology information of the second domain to the first control device. The aspect as described above, and any possible implementation manner, further provide an implementation manner, where the topology information including the topology information of the first domain and the topology information of the topology information including the second domain are further provided The information is the topology information obtained by the topological collection device that summarizes the topology information of the first domain and the topology information of the second domain.

The aspect as described above, and any possible implementation manner, further providing an implementation manner, where the topology information of the topology information that is included in the first domain is the first domain obtained by the topology collection device The topology information of the topology information including the second domain is topology information of the second domain obtained by the topology collection device.

In another aspect of the present application, a control device is provided, the control device being applied to a centralized system for controlling and forwarding separate, the system comprising the control device and a second control device, and a network managed by the control device a device and a network device managed by the second control device, the control device includes:

And an obtaining unit, configured to obtain topology information of the first domain to which the control device belongs, and transmit topology information of the first domain to the sending unit, where the first domain is the control device and the control device The domain formed by the managed network devices;

a receiving unit, configured to receive topology information of the second domain to which the second control device belongs, sent by the second control device, and transmit topology information of the second domain to the sending unit, where The second domain is a domain formed by the second control device and the network device managed by the second control device;

The sending unit is configured to send, by the control device, topology information including topology information of the first domain to the second control device.

The above-mentioned aspect and any possible implementation manner further provide an implementation manner, where the topology information that is sent by the sending unit and includes the topology information of the first domain is that the sending unit The topology obtained by summarizing the topology information of the first domain and the topology information of the second domain Information.

The aspect as described above, and any possible implementation manner, further provide an implementation manner, where the topology information that is sent by the sending unit and includes the topology information of the first domain is received by the sending unit The topology information of the first domain.

The aspect as described above and any possible implementation manner further provide an implementation manner, where the obtaining unit is specifically used for

Using the IGP, obtaining topology information of the first domain to which the control device belongs; or

The LLDP is used to obtain topology information of the first domain to which the control device belongs.

In another aspect of the present application, a topology collection device is provided, the topology collection device being applied to a centralized system for controlling and forwarding, the system comprising a first control device, a second control device, and the topology a collection device, and a network device managed by the first control device and a network device managed by the second control device, where the topology collection device includes:

a receiving unit, configured to receive topology information of the first domain to which the first control device belongs, and transmit topology information of the first domain to a sending unit, where the first domain is a domain formed by the first control device and the network device managed by the first control device; the receiving unit is further configured to receive, by the second control device, the second domain to which the second control device belongs The topology information, and transmitting the topology information of the second domain to the sending unit, where the second domain is a domain formed by the second control device and a network device managed by the second control device ;

The sending unit is configured to send topology information including topology information of the first domain to the second control device;

The sending unit is further configured to send topology information including topology information of the second domain to the first control device.

The aspect as described above, and any possible implementation manner, further provide an implementation manner, where the sending unit sends the topology information including the topology information of the first domain and the sending information by the sending unit The topology information including the topology information of the second domain is the topology information obtained by the sending unit combining the topology information of the first domain and the topology information of the second domain.

The aspect as described above, and any possible implementation manner, further provide an implementation manner, where the topology information that is sent by the sending unit and includes the topology information of the first domain is received by the sending unit The topology information of the first domain; the extension of the second domain that is sent by the sending unit The topology information of the PC information is topology information of the second domain received by the sending unit.

a processor, configured to obtain topology information of the first domain to which the control device belongs, and transmit topology information of the first domain to a transmitter, where the first domain is the control device and the control device The domain formed by the managed network devices;

And receiving, by the second control device, topology information of the second domain to which the second control device belongs, and transmitting topology information of the second domain to the transmitter, where The second domain is a domain formed by the second control device and the network device managed by the second control device; the transmitter is configured to: the control device includes a topology of topology information of the first domain Information is sent to the second control device.

The aspect as described above, and any possible implementation manner, further providing an implementation manner, where the topology information of the topology information that is sent by the sender that includes the first domain is that the sender The topology information obtained by summarizing the topology information of the first domain and the topology information of the second domain.

The aspect as described above, and any possible implementation manner, further providing an implementation manner, where the topology information of the topology information that is sent by the sender and the first domain is received by the sender The topology information of the first domain.

The foregoing aspect and any possible implementation manner further provide an implementation manner, where the processor is specifically used to

a receiver, configured to receive topology information of the first domain to which the first control device belongs, sent by the first control device, and transmit topology information of the first domain to a sender, where the first domain is For The first control device and the domain of the network device managed by the first control device; the receiver is further configured to receive, by the second control device, the second domain to which the second control device belongs The topology information, and the topology information of the second domain is transmitted to the sender, where the second domain is a domain formed by the second control device and a network device managed by the second control device;

The transmitter is configured to send topology information including topology information of the first domain to the second control device;

The transmitter is further configured to send topology information including topology information of the second domain to the first control device.

The aspect as described above, and any possible implementation manner, further provide an implementation manner, where the topology information of the topology information that is sent by the sender and the information sent by the sender is sent by the sender The topology information including the topology information of the second domain is the topology information obtained by the sender summing the topology information of the first domain and the topology information of the second domain.

The aspect as described above, and any possible implementation manner, further providing an implementation manner, where the topology information of the topology information that is sent by the sender and the first domain is received by the sender The topology information of the first domain is sent by the sender, and the topology information of the topology information that is sent by the sender is the topology information of the second domain that is received by the sender.

According to the foregoing technical solution, on the one hand, the first control device obtains topology information of the first domain to which the first control device belongs, where the first domain is the first control device and the first a domain of the network device managed by the control device, and the first control device receives the topology information of the second domain to which the second control device belongs, and the second domain is a domain formed by the second control device and the network device managed by the second control device, so that the first control device can send topology information including topology information of the first domain to the second The control device can avoid the problem of increasing the processing load of the control device caused by the collection of the topology information of the entire network by the network device managed by the control device in the prior art, thereby reducing the processing load of the control device. , is conducive to expanding the scale of the network.

According to the foregoing technical solution, on the other hand, the topology of the application receives the topology information of the first domain to which the first control device belongs, and the first domain is the a domain formed by the first control device and the network device managed by the first control device, and the topology collection device receiving the second control device sent by the second control device The topology information of the second domain, the second domain is a domain formed by the second control device and the network device managed by the second control device, so that the topology collection device can include the first The topology information of the topology information of the domain is sent to the second control device, and the topology collection device is configured to send the topology information including the topology information of the second domain to the first control device The problem of increasing the processing load of the control device caused by the collection of the topology information of the entire network by the network device managed by the control device is required in the prior art, thereby reducing the processing load of the control device. Conducive to expanding the scale of the network. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. The drawings are some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without any inventive labor.

1 is a schematic flowchart of a topology information processing method according to an embodiment of the present disclosure; FIG. 2 is a schematic diagram of a domain division of an entire network in the embodiment corresponding to FIG. 1;

3 is a schematic diagram of another domain division of the entire network in the embodiment corresponding to FIG. 1;

4 is a schematic flowchart of a topology information processing method according to another embodiment of the present disclosure; FIG. 5 is a schematic structural diagram of a control device according to another embodiment of the present application;

FIG. 6 is a schematic structural diagram of a topology collection device according to another embodiment of the present application;

FIG. 7 is a schematic structural diagram of a control device according to another embodiment of the present application;

FIG. 8 is a schematic structural diagram of a topology collection device according to another embodiment of the present application. The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present application. The embodiments are part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present invention.

In addition, the term "and / or" in this article is merely an association describing the associated object, indicating There may be three relationships, for example, A and/or B, which may indicate: A exists separately, A and B exist simultaneously, and B exists separately. In addition, the character T in this paper generally indicates that the contextual object is an "or" relationship.

It should be noted that the technical solution of the present invention can be applied to a centralized system for controlling and forwarding separate, for example, an Open Flow system or the like.

FIG. 1 is a schematic flowchart of a method for processing topology information according to an embodiment of the present disclosure, where the method is applied to a centralized system for controlling and forwarding, the system includes a first control device and a second control device, and the The network device managed by the first control device and the network device managed by the second control device are as shown in FIG. 1 .

101. The first control device obtains topology information of the first domain to which the first control device belongs, where the first domain is formed by the first control device and a network device managed by the first control device. area.

The first control device receives the topology information of the second domain to which the second control device belongs, and the second domain is the second control device and the second control The domain formed by the network devices managed by the device.

103. The first control device sends topology information including topology information of the first domain to the second control device.

In this embodiment, the entire network may be divided into a plurality of first domains and a plurality of second domains. As shown in FIG. 2, the specific division method may be that the operator manually specifies the domain, or may be automatically designated by a computer. The domain is not limited in this embodiment.

The topology information may include, but is not limited to, devices on the corresponding domain, and a connection order relationship of the devices. For example, the topology information of the first domain may include, but is not limited to, devices on the first domain, and a connection order relationship of the devices. For another example, the topology information of the second domain may include, but is not limited to, devices on the second domain, and a connection order relationship of the devices.

It should be noted that the first control device of the execution body of 101, 102, and 103 above is

The OpenFlow system may be a control server (Controller); the network device managed by the first control device may be an OpenFlow switch (OpenFlow Switch) under the OpenFlow system; correspondingly, the first corresponding to the first control device The second control device, in the OpenFlow system, may also be a control server; the network device managed by the second control device may also be an OpenFlow switch under the OpenFlow system. Optionally, in a possible implementation manner of the embodiment, the topology information that includes the topology information of the first domain may be that the first control device uses the topology information of the first domain and The topology information obtained by summarizing the topology information of the second domain is summarized.

Optionally, in a possible implementation manner of the embodiment, the topology information that includes the topology information of the first domain may also be a topology of the first domain obtained by the first control device. information.

Optionally, in a possible implementation manner of the embodiment, in the first control device, the first control device may obtain the topology information of the first domain to which the first control device belongs. In this implementation manner, the first control device and the network device managed by the first control device may obtain, by using an IGP, topology information of the first domain obtained by performing a synchronization operation. Compared with the prior art, the network device managed by the first control device and the first control device only needs to synchronize the topology information of the first domain to which the first control device belongs by using the IGP, and does not need to synchronize the extension of the entire network. The information can effectively reduce the processing load of the network device managed by the first control device and the first control device.

The IGP may include an Intermediate System to Intermediate System (ISIS) protocol or an Open Shortest Path First (OSPF) protocol.

Optionally, in a possible implementation manner of the embodiment, in the first control device, the first control device may obtain the topology information of the first domain to which the first control device belongs. In this implementation manner, the first control device establishes a communication connection with the network device managed by the first control device, and performs a Transmission Control Protocol (TCP) connection, where the first The control device may obtain topology information of the network device managed by each of the first control devices by using the established communication connection to form topology information of the first domain. Compared with the prior art, the first control device only needs to establish a communication connection with a network device managed by the first control device in the same domain as the first control device, to obtain the extension of the first domain. The information is not required to establish a communication connection between the network device managed by the control device in the entire network (ie, the network device managed by the first control device and the network device managed by the second control device) to obtain the extension of the entire network. The simple information can effectively reduce the processing load of the first control device.

Optionally, in a possible implementation manner of the embodiment, the first control device is a topology collection device, and may be any one of the control devices. Specifically, the multiple control devices in the system may specifically determine a control device as the first control device according to a preset selection policy. The other control device can be the second control device.

For example, the selection policy may be that, according to the management identifier information, a control device that has the largest or smallest value, such as an IP address, is selected as the first control device; for example, the selection policy may also be based on the device identifier. A control device having the largest or smallest value, such as an Electronic Serial Numbers (ESN) identifier (ESN ID) or a Media Access Control (MAC), is selected as the first control device.

In order to make the method provided by the embodiment of the present application clearer, the network topology shown in FIG. 3 will be taken as an example. As shown in Figure 3, the entire network is divided into four domains, namely domain 1, domain 2, domain 3, and domain 4. Among them, Master 1, and AP 1, AP 2 and AP 3 managed by Master 1 form domain 1; Master 2, and AP 4 and AP 5 managed by Master 2 form domain 2; Master 3, and AP 6 managed by Master 3. AP 7 constitutes domain 3; Master 4, and AP 8 and AP 9 managed by Master 4 constitute domain 4.

In a possible implementation manner, Master 1, Master 2, Master 3, and Master 4 may specifically determine that Master 1 is the first control device according to a preset selection policy. First, Master 1, Master 2, Master 3, and Master 4 can obtain the topology information of the domain to which they belong, that is, Master 1 obtains the topology information of domain 1 and Master 2 obtains the topology information of domain 2. Master 3 obtains the topology information of domain 3, and Master 4 obtains the topology information of domain 4. Then, Master 2, Master 3, and Master 4 send the topology information of each of the respective domains to which Master 1 obtains, so that Master 1 obtains the topology information of the entire network. Then, the master 1 summarizes the topology information of the domain 2 to which the master 2 belongs, the topology information of the domain 3 to which the master 3 belongs, and the topology information of the domain 4 to which the master 4 belongs, and the topology information of the domain 1 to which the master belongs. The obtained topology information is sent to Master 2, Master 3 and Master 4 so that Master 2, Master 3 and Master 4 obtain the topology information of the entire network.

In this embodiment, the topology information of the first domain to which the first control device belongs is obtained by the first control device, where the first domain is the first control device and the network device managed by the first control device And the first control device receives the topology information of the second domain to which the second control device belongs, and the second domain is the second control device and the a domain formed by the network device managed by the second control device, so that the first control device can send the topology information including the topology information of the first domain to the second control device, which can avoid the prior art. Because the control device needs to collect the entire network device managed by the control device The problem of an increase in the processing load of the control device caused by the topology information of the network, thereby reducing the processing load of the control device and facilitating the expansion of the network scale.

FIG. 4 is a schematic flowchart of a topology information processing method according to another embodiment of the present disclosure, where the method is applied to a centralized centralized system for controlling and forwarding, and the system includes a first control device, a second control device, and a topology. The collection device, and the network device managed by the first control device and the network device managed by the second control device are as shown in FIG. 4 .

401. The topology collection device receives the topology information of the first domain to which the first control device belongs, and the first domain is the first control device and the first control The domain formed by the network devices managed by the device.

The topological collection device receives the topology information of the second domain to which the second control device belongs, and the second domain is the second control device and the second control The domain formed by the network devices managed by the device.

403. The topology collection device sends information about the extension information of the first domain to the second control device.

404. The topology collection device sends information about the topology information of the second domain to the first control device.

Optionally, in a possible implementation manner of this embodiment, the topology collection device is a separately set server, for example, a control server, and the server may be associated with each control device (ie, the first control device and the second The control device) communicates.

In this embodiment, the entire network may be divided into a plurality of first domains and a plurality of second domains, as shown in the figure.

As shown in FIG. 2, the specific division method may be that the sub-domain is manually designated by the operator, or may be automatically designated by the computer, which is not limited in this embodiment.

It should be noted that, in the OpenFlow system, the first control device may be a control server (Controller); the network device managed by the first control device may be an OpenFlow switch (OpenFlow Switch) under the OpenFlow system; The second control device corresponding to the first control device may also be a control server under the OpenFlow system; The network device managed by the second control device may also be an OpenFlow switch under the OpenFlow system.

Optionally, in a possible implementation manner of the embodiment, the topology information that includes the topology information of the first domain and the topology information that includes the topology information of the second domain may be The topology information obtained by the topology collection device is obtained by summarizing the topology information of the first domain and the topology information of the second domain.

Optionally, in a possible implementation manner of the embodiment, the topology information that includes the topology information of the first domain may also be a topology of the first domain obtained by the topology collection device. information.

Optionally, in a possible implementation manner of the embodiment, the topology information that includes the topology information of the second domain may also be a topology of the second domain obtained by the topology collection device. information.

Optionally, in a possible implementation manner of the embodiment, the first control device may use the IGP to obtain topology information of the first domain to which the first control device belongs. In this implementation manner, the first control device and the network device managed by the first control device may obtain, by using an IGP, topology information of the first domain obtained by performing a synchronization operation. Compared with the prior art, the network device managed by the first control device and the first control device only needs to synchronize the topology information of the first domain to which the first control device belongs by using the IGP, and does not need to synchronize the extension of the entire network. The information can effectively reduce the processing load of the network device managed by the first control device and the first control device.

Optionally, in a possible implementation manner of the embodiment, the first control device may use LLDP to obtain topology information of the first domain to which the first control device belongs. In this implementation, the first control device establishes a communication connection with a network device managed by the first control device, for example, a Transmission Control Protocol (TCP) connection, and the first control device can pass The established communication connection obtains topology information of the network device managed by each of the first control devices to form topology information of the first domain. Compared with the prior art, the first control device only needs to establish a communication connection with a network device managed by the first control device in the same domain as the first control device, to obtain the extension of the first domain. Park information, there is no need to establish a network device managed by the control device in the entire network (ie, the network device managed by the first control device) The communication connection between the network device and the network device managed by the second control device to obtain the topology information of the entire network can effectively reduce the processing load of the first control device.

It can be understood that, similarly, the second control device can obtain the topology information of the second domain to which the second control device belongs by using a similar method, and details are not described herein again.

In a possible implementation manner, a server may be independently set as a topology collection device. First, Master 1, Master 2, Master 3, and Master 4 can obtain the topology information of the domain to which they belong, that is, Master 1 obtains the topology information of domain 1 and Master 2 obtains the topology information of domain 2. Master 3 obtains the topology information of domain 3, and Master 4 obtains the topology information of domain 4. Then, Master 1, Master 2, Master 3, and Master 4 send the topology information of each respective domain to the server, so that the server obtains the topology information of the entire network. Then, the server obtains the topology information of the domain 1 to which the master 1 belongs, the topology information of the domain 2 to which the master 2 belongs, the topology information of the domain 3 to which the master 3 belongs, and the topology information of the domain 4 to which the master 4 belongs. The topology information is sent to Master 1, Master 2, Master 3 and Master 4 so that Master 1, Master 2, Master 3 and Master 4 obtain the topology information of the entire network.

In this embodiment, the topology information of the first domain to which the first control device belongs is sent by the first control device, where the first domain is the first control device and the first a domain of the network device managed by the control device, and the topology collection device receives the topology information of the second domain to which the second control device belongs, and the second domain is a domain formed by the second control device and the network device managed by the second control device, so that the topology collection device can send topology information including topology information of the first domain to the second The control device, and the topology collection device, can send the topology information including the topology information of the second domain to the first control device, which can avoid the need for the control device to pass through the control device in the prior art. Control caused by managed network devices collecting topology information of the entire network The problem of an increase in the processing load of the device reduces the processing load of the control device and facilitates the expansion of the network scale.

It should be noted that, for the foregoing method embodiments, for the sake of brevity, they are all described as a series of action combinations, but those skilled in the art should understand that the present application is not limited by the described action sequence. Because in accordance with the present application, certain steps may be performed in other orders or concurrently. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

In the above embodiments, the descriptions of the various embodiments are different, and the parts that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

FIG. 5 is a schematic structural diagram of a control device according to another embodiment of the present application, where the control device is applied to a centralized system for controlling and forwarding, the system includes the control device and a second control device, and the control a network device managed by the device and a network device managed by the second control device. As shown in FIG. 5, the control device of this embodiment may include an obtaining unit 51, a receiving unit 52, and a transmitting unit 53. The obtaining unit 51 is configured to obtain topology information of the first domain to which the control device belongs, and transmit topology information of the first domain to the sending unit 53, where the first domain is the control device and a receiving device 52, configured to receive topology information of the second domain to which the second control device belongs, and send the second domain The topology information is transmitted to the sending unit 53, the second domain is a domain formed by the second control device and a network device managed by the second control device, and the sending unit 53 is configured to The control device sends topology information including the topology information of the first domain to the second control device.

It should be noted that the control device may be a control server under the OpenFlow system; the network device managed by the control device may be under the OpenFlow system. The OpenFlow Switch (OpenFlow Switch); correspondingly, the second control device corresponding to the control device may be a control server under the OpenFlow system; and the network device managed by the second control device is under the OpenFlow system. It can also be an OpenFlow switch.

Optionally, in a possible implementation manner of the embodiment, the topology information that is sent by the sending unit 53 and includes the topology information of the first domain may be that the sending unit 53 The topology information obtained by summarizing the topology information of the domain and the topology information of the second domain.

Optionally, in a possible implementation manner of the embodiment, the topology information that is sent by the sending unit 53 and includes the topology information of the first domain may also be the Topological information of the first domain.

Optionally, in a possible implementation manner of the embodiment, the obtaining unit 51 may specifically obtain the topology information of the first domain to which the control device belongs by using the IGP.

Optionally, in a possible implementation manner of the embodiment, the obtaining unit 51 may specifically obtain the topology information of the first domain to which the control device belongs by using LLDP.

It should be noted that the control device provided in this embodiment is used to perform the method in the embodiment shown in FIG. 1. The details already described in the embodiment shown in FIG. 1 are not described herein again.

In this embodiment, the control device obtains the topology information of the first domain to which the control device belongs by using the obtaining unit, where the first domain is a domain formed by the control device and the network device managed by the control device, and receiving Receiving, by the second control device, topology information of the second domain to which the second control device belongs, where the second domain is formed by the second control device and the network device managed by the second control device The domain is configured to enable the sending unit to send the topology information including the topology information of the first domain to the second control device, which can avoid the network device that needs to be managed by the control device in the prior art. The problem of increasing the processing load of the control device caused by collecting the topology information of the entire network, thereby reducing the processing load of the control device and facilitating the expansion of the network scale.

FIG. 6 is a schematic structural diagram of a topology collection device according to another embodiment of the present disclosure. The topology collection device is applied to a centralized system for controlling and forwarding, and the system includes a first control device, a second control device, and The topology collection device, and the network device managed by the first control device and the network device managed by the second control device. As shown in FIG. 6, the topology collection device of this embodiment may include a receiving unit 61 and a sending unit 62. The receiving unit 61 is configured to receive topology information of the first domain to which the first control device belongs, sent by the first control device, and The topology information of the first domain is transmitted to the sending unit 62, where the first domain is a domain formed by the first control device and the network device managed by the first control device; the receiving unit 61 is further used for Receiving, by the second control device, the topology information of the second domain to which the second control device belongs, and transmitting the topology information of the second domain to the sending unit 62, where the second domain is a second control device and a domain formed by the network device managed by the second control device; the sending unit 62, configured to send topology information including topology information of the first domain to the second The sending unit 62 is further configured to send topology information including topology information of the second domain to the first control device.

It should be noted that, in the OpenFlow system, the first control device may be a control server (Controller); the network device managed by the first control device may be an OpenFlow switch (OpenFlow Switch) under the OpenFlow system; The second control device corresponding to the first control device may also be a control server under the OpenFlow system; and the network device managed by the second control device may also be an OpenFlow switch under the OpenFlow system.

Optionally, in a possible implementation manner of this embodiment, the topology information that is sent by the sending unit 62 and includes the topology information of the first domain and the content that is sent by the sending unit 62 The topology information of the topology information of the two domains may be the topology information obtained by the sending unit 62 by summarizing the topology information of the first domain and the topology information of the second domain.

Optionally, in a possible implementation manner of the embodiment, the topology information that is sent by the sending unit 62 and includes the topology information of the first domain may also be received by the sending unit 62. The topology information of the first domain.

Optionally, in a possible implementation manner of the embodiment, the topology information that is sent by the sending unit 62 and includes the topology information of the second domain may also be the second received by the sending unit 62. Topological information of the domain.

In this embodiment, the topology collecting device receives the topology information of the first domain to which the first control device belongs, and the first domain is the first control device and the a domain formed by the network device managed by the first control device, and the receiving unit receives topology information of the second domain to which the second control device belongs, which is sent by the second control device, where the second domain is a domain formed by the second control device and the network device managed by the second control device, so that the sending unit can send the topology information including the topology information of the first domain to the second control device, and The sending unit can send the topology information including the topology information of the second domain to the first control device, which can avoid collecting the entire network device that is controlled by the control device in the prior art. The problem of increasing the processing load of the control device caused by the topology information of the network, thereby reducing the processing load of the control device and facilitating the expansion of the network scale.

FIG. 7 is a schematic structural diagram of a control device according to another embodiment of the present application, where the control device is applied to a centralized system for controlling and forwarding, the system includes the control device and a second control device, and the control a network device managed by the device and a network device managed by the second control device. As shown in FIG. 7, the control device of this embodiment may include a processor 71, a receiver 72, and a transmitter 73. The processor 71 is configured to obtain topology information of the first domain to which the control device belongs, and transmit topology information of the first domain to the transmitter 73, where the first domain is the control device and a domain formed by the network device managed by the control device; a receiver 72, configured to receive topology information of the second domain to which the second control device belongs, sent by the second control device, and to use the second domain The topology information is transmitted to the transmitter 73, the second domain is a domain formed by the second control device and a network device managed by the second control device, and the transmitter 73 is configured to The control device sends topology information including the topology information of the first domain to the second control device.

In this embodiment, the entire network may be divided into a plurality of first domains and a plurality of second domains. As shown in FIG. 2, the specific division method may be that the operator manually specifies the domain, or may be automatically designated by a computer. The domain is not limited in this embodiment. The topology information may include, but is not limited to, devices on the corresponding domain, and a connection order relationship of the devices. For example, the topology information of the first domain may include, but is not limited to, devices on the first domain, and a connection order relationship of the devices. For example, the topology information of the second domain may include, but is not limited to, devices on the second domain, and a connection order relationship of the devices.

It should be noted that the control device, under the OpenFlow system, can be the control server.

(Controller); the network device managed by the control device may be an OpenFlow switch (OpenFlow Switch) under the OpenFlow system; correspondingly, the second control device corresponding to the control device may be The network device managed by the second control device may be an OpenFlow switch under the OpenFlow system.

Optionally, in a possible implementation manner of the embodiment, the topology information that is sent by the sender 73 and includes topology information of the first domain may be that the transmitter 73 The topology information obtained by summarizing the topology information of the domain and the topology information of the second domain.

Optionally, in a possible implementation manner of the embodiment, the topology information that is sent by the sender 73 and includes the topology information of the first domain may also be the Topological information of the first domain.

Optionally, in a possible implementation manner of the embodiment, the processor 71 may use the IGP to obtain topology information of the first domain to which the control device belongs.

Optionally, in a possible implementation manner of the embodiment, the processor 71 may use LLDP to obtain topology information of the first domain to which the control device belongs.

In this embodiment, the control device obtains the topology information of the first domain to which the control device belongs by using the obtaining unit, where the first domain is a domain formed by the control device and the network device managed by the control device, and receiving Receiving, by the second control device, topology information of the second domain to which the second control device belongs, where the second domain is formed by the second control device and the network device managed by the second control device The domain is configured to enable the sending unit to send the topology information including the topology information of the first domain to the second control device, which can avoid the network device that needs to be managed by the control device in the prior art. The problem of increasing the processing load of the control device caused by collecting the topology information of the entire network, thereby reducing the processing load of the control device and facilitating the expansion of the network scale. FIG. 8 is a schematic structural diagram of a topology collection device according to another embodiment of the present disclosure. The topology collection device is applied to a centralized system for controlling and forwarding, and the system includes a first control device, a second control device, and The topology collection device, and the network device managed by the first control device and the network device managed by the second control device. As shown in FIG. 8, the topology collection device of this embodiment may include a receiver 81 and a transmitter 82. The receiver 81 is configured to receive topology information of the first domain to which the first control device belongs, and transmit topology information of the first domain to the transmitter 82. The first domain is a domain formed by the first control device and the network device managed by the first control device; the receiver 81 is further configured to receive the second control sent by the second control device The topology information of the second domain to which the device belongs, and the topology information of the second domain is transmitted to the transmitter 82, where the second domain is managed by the second control device and the second control device a domain formed by the network device, the transmitter 82, configured to send topology information including topology information of the first domain to the second control device, where the transmitter 82 is further configured to include The topology information of the topology information of the second domain is sent to the first control device.

Optionally, in a possible implementation manner of this embodiment, the packet sent by the sender 82 is The topology information including the topology information of the first domain and the topology information of the topology information including the second domain sent by the sender 82 may be the transmitter 82 to use the first domain. The topology information obtained by summarizing the topology information and the topology information of the second domain.

Optionally, in a possible implementation manner of the embodiment, the topology information that is sent by the sender 82 and includes the topology information of the first domain may also be that the transmitter 82 receives the Topological information of the first domain.

Optionally, in a possible implementation manner of the embodiment, the topology information of the topology information that is sent by the transmitter 82 and includes the second domain may also be the second information received by the transmitter 82. Topological information of the domain.

A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute the method of the various embodiments of the present application. Part of the steps. The foregoing storage medium includes: a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. Medium.

Finally, it should be noted that the above embodiments are only used to explain the technical solutions of the present application, and are not limited thereto; although the present application is described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently substituted; and the modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

claims

1. A topology information processing method, characterized in that the method is applied to a centralized system in which control and forwarding are separated, the system includes a first control device and a second control device, and the first control device manages The network device and the network device managed by the second control device, the method includes:

The first control device obtains topology information of a first domain to which the first control device belongs, and the first domain is a domain composed of the first control device and the network device managed by the first control device;

The first control device receives the topology information of the second domain to which the second control device belongs sent by the second control device, and the second domain manages the second control device and the second control device. A domain composed of network devices;

2. The method according to claim 1, characterized in that: the topology information including the topology information of the first domain is the first control device combining the topology information of the first domain and the topology information of the first domain. The topology information obtained by summarizing the topology information of the second domain.

3. The method according to claim 1, wherein the topology information including the topology information of the first domain is the topology information of the first domain obtained by the first control device.

4. The method according to any one of claims 1 to 3, characterized in that the first control device obtains the topology information of the first domain to which the first control device belongs, including:

The first control device uses IGP to obtain the topology information of the first domain to which the first control device belongs; or

The first control device uses LLDP to obtain the topology information of the first domain to which the first control device belongs.

5. A topology information processing method, characterized in that the method is applied to a centralized system in which control and forwarding are separated, the system includes a first control device, a second control device and a topology collection device, and the The network device managed by the first control device and the network device managed by the second control device, the method includes:

The topology collection device receives the topology information of a first domain to which the first control device belongs sent by the first control device, and the first domain is the first control device and the first control device. A domain composed of managed network devices;

The topology collection device receives the topology information of the second domain to which the second control device belongs sent by the second control device, and the second domain manages the second control device and the second control device. A domain composed of network devices;

The topology collection device sends topology information including the topology information of the first domain to the second control device;

The topology collection device sends topology information including the topology information of the second domain to the first control device.

6. The method according to claim 5, characterized in that, the topology information including the topology information of the first domain and the topology information including the topology information of the second domain are both the The topology collection device summarizes the topology information of the first domain and the topology information of the second domain and obtains the topology information.

7. The method according to claim 5, characterized in that: the topology information including the topology information of the first domain is the topology information of the first domain obtained by the topology collection device; The topology information including the topology information of the second domain is the topology information of the second domain obtained by the topology collection device.

8. The method according to any one of claims 5 to 7, characterized in that the first control device obtains the topology information of the first domain to which the first control device belongs, including:

9. A control device, characterized in that the control device is applied to a centralized system in which control and forwarding are separated, and the system includes the control device and a second control device, as well as network devices managed by the control device and A network device managed by the second control device. The control device includes: an obtaining unit, configured to obtain the topology information of the first domain to which the control device belongs, and transmit the topology information of the first domain to the sending unit. , the first domain is a domain composed of the control device and the network device managed by the control device;

a receiving unit, configured to receive the topology information of the second domain to which the second control device belongs sent by the second control device, and transmit the topology information of the second domain to the sending unit, The second domain is a domain composed of the second control device and the network device managed by the second control device;

The sending unit is configured for the control device to send the topology information including the topology information of the first domain to the second control device.

10. The control device according to claim 9, wherein the topology information including the topology information of the first domain sent by the sending unit is the topology information of the first domain sent by the sending unit. Topology information obtained by summarizing the topology information and the topology information of the second domain.

1 1. The control device according to claim 9, characterized in that, the topology information including the topology information of the first domain sent by the sending unit is the first topology information received by the sending unit. Domain topology information.

12. The control device according to any one of claims 9 to 11, characterized in that the obtaining unit is specifically used to

Use IGP to obtain the topology information of the first domain to which the control device belongs; or

Use LLDP to obtain the topology information of the first domain to which the control device belongs.

13. A topology collection device, characterized in that the topology collection device is applied to a centralized system in which control and forwarding are separated, and the system includes a first control device, a second control device and the topology collection device , as well as the network device managed by the first control device and the network device managed by the second control device, the topology collection device includes:

A receiving unit, configured to receive the topology information of the first domain to which the first control device belongs sent by the first control device, and transmit the topology information of the first domain to the sending unit, the first domain A domain composed of the first control device and the network device managed by the first control device; the receiving unit is also configured to receive the second domain to which the second control device belongs sent by the second control device. the topology information of the second domain, and transmit the topology information of the second domain to the sending unit, where the second domain is a domain composed of the second control device and the network device managed by the second control device ;

The sending unit is also configured to send topology information including topology information of the second domain to the first control device.

14. The topology collection device according to claim 13, characterized in that: the sending order The topology information containing the topology information of the first domain sent by the sending unit and the topology information containing the topology information of the second domain sent by the sending unit are both the sending unit sending the third domain and the topology information containing the topology information of the second domain. Topology information obtained by summarizing the topology information of one domain and the topology information of the second domain.

15. The topology collection device according to claim 13, wherein the topology information including the topology information of the first domain sent by the sending unit is the third topology information received by the sending unit. Topology information of one domain; The topology information including the topology information of the second domain sent by the sending unit is the topology information of the second domain received by the sending unit.