CN102907052A - Method and device for processing topology information - Google Patents

Abstract

Embodiments of the invention provide topological information processing method and equipment. On one aspect, the topological information of a first domain that first controlling equipment belongs to is obtained by means of the first controlling equipment. The first domain is a domain formed by the first controlling equipment and network equipment that is managed by the first controlling equipment. The topological information of a second domain that second controlling equipment belongs to is transmitted by the second controlling equipment and is received by the first controlling equipment. The second domain is a domain formed by the second controlling equipment and network equipment that is managed by the second controlling equipment. The topological information including the topological information of the first domain can be transmitted by the first controlling equipment to the second controlling equipment. Therefore, the problem that in the prior art the topological information of the whole network needs to be collected by controlling equipment via network equipment that is managed by the controlling equipment and therefore the processing burden of the controlling equipment is increased is solved, so that the processing burden of the controlling equipment is reduced, and network scale expanding is facilitated.

Description

Method and device for processing topology information

technical field

The present application relates to communication technology, 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, centralized systems that separate control and forwarding have emerged, such as OpenFlow systems. The control device (for example, Master, etc.) and the network device (for example, AP (Access Point), etc.) managed by the control device jointly complete the packet forwarding process that was originally completely controlled by the switch/router, thus realizing the combination of data forwarding and routing control. separate. With the increase of network devices, the control device (Master) can adopt protocols such as Interior Gateway Protocol (Interior Gateway Protocol, IGP) or Link Layer Discovery Protocol (Link Layer Discovery Protocol, LLDP) to collect data from network devices managed by the control device. Topology information of 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 increases, thereby limiting the network scale.

Contents of the invention

Aspects of the present application provide a topology information processing method and device to reduce the processing burden of the control device.

In one aspect of the present application, a method for processing topology information is provided, 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, where the first domain is a domain formed by the first control device and network devices 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 is managed by the second control device and the second control device. A domain composed of network devices;

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

According to the above-mentioned aspect and any possible implementation manner, an implementation manner is further provided, the topology information including the topology information of the first domain is for the first control device to transfer the topology information of the first domain to and the topology information obtained after summarizing the topology information of the second domain.

According to the above aspect and any possible implementation manner, an implementation manner is further provided, the topology information including the topology information of the first domain is the topology of the first domain obtained by the first control device information.

According to the foregoing aspect and any possible implementation manner, an implementation manner is further provided, 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 obtains the topology information of the first domain to which the first control device belongs by using an IGP; or

The first control device obtains the topology information of the first domain to which the first control device belongs by using LLDP.

Another aspect of the present application provides a method for processing topology information, the method 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 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 the first domain to which the first control device belongs and is sent by the first control device, and the first domain is the first control device and a network managed by the first control device the domain formed by the device;

receiving, by the topology collection device, topology information of a second domain to which the second control device belongs, sent by the second control device, where the second domain is the second control device and a network managed by the second control device the domain formed by the device;

sending, by the topology collection device, 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.

According to the above aspect and any possible implementation manner, an implementation manner is further provided, wherein both 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 topology information obtained by the topology collecting device after summarizing the topology information of the first domain and the topology information of the second domain.

According to the above aspect and any possible implementation manner, an implementation manner is further provided, 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.

According to the foregoing aspect and any possible implementation manner, an implementation manner is further provided, 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 obtains the topology information of the first domain to which the first control device belongs by using an IGP; or

The first control device obtains the topology information of the first domain to which the first control device belongs by using LLDP.

In another aspect of the present application, a control device is provided, 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, and a network managed by the control device The device and the network device managed by the second control device, the control device includes:

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

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 a domain formed by the second control device and network devices managed by the second control device;

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

According to the above aspect and any possible implementation manner, an implementation manner is further provided, the topology information including the topology information of the first domain sent by the sending unit is for the sending unit to transfer the first domain to The topology information obtained by summarizing the topology information of the domain and the topology information of the second domain.

According to the above aspect and any possible implementation manner, an implementation manner is further provided, the topology information including the topology information of the first domain sent by the sending unit is the first domain received by the sending unit The topology information of a domain.

According to the above aspect and any possible implementation manner, an implementation manner is further provided, the obtaining unit is specifically configured to

Obtaining topology information of the first domain to which the control device belongs by using an IGP; or

Using LLDP, the topology information of the first domain to which the control device belongs is obtained.

Another aspect of the present application provides a topology collection device, the topology collection device is applied to a centralized system that separates control and forwarding, 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 a sending unit, where the first domain is the a domain formed by the first control device and network devices managed by the first control device;

The receiving unit is further 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 The second domain is a domain formed by the second control device and network devices 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.

According to the above aspect and any possible implementation manner, an implementation manner is further provided, the topology information including the topology information of the first domain sent by the sending unit and the sending unit including The topology information of the topology information of the second domain is topology information obtained by the sending unit after summarizing the topology information of the first domain and the topology information of the second domain.

According to the above aspect and any possible implementation manner, an implementation manner is further provided, the topology information including the topology information of the first domain sent by the sending unit is the first domain received by the sending unit The topology information of a domain; the topology information including the topology information of a second domain sent by the sending unit is the topology information of the second domain received by the sending unit.

In another aspect of the present application, a control device is provided, 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, and a network managed by the control device The device and the network device managed by the second control device, the control device includes:

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

a receiver, 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 sender, the second domain a domain formed by the second control device and network devices managed by the second control device;

The sender is used for the control device to send topology information including the topology information of the first domain to the second control device.

According to the above aspect and any possible implementation manner, an implementation manner is further provided, the topology information including the topology information of the first domain sent by the sender is for the sender to transfer the first domain The topology information obtained by summarizing the topology information of the domain and the topology information of the second domain.

According to the above aspect and any possible implementation manner, an implementation manner is further provided, the topology information including the topology information of the first domain sent by the sender is the first domain received by the sender The topology information of a domain.

According to the foregoing aspect and any possible implementation manner, an implementation manner is further provided, the processor is specifically configured to

Obtaining topology information of the first domain to which the control device belongs by using an IGP; or

Using LLDP, the topology information of the first domain to which the control device belongs is obtained.

Another aspect of the present application provides a topology collection device, the topology collection device is applied to a centralized system that separates control and forwarding, 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 receiver, 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 sender, where the first domain is the a domain formed by the first control device and network devices managed by the first control device;

The receiver is further 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 sender, the The second domain is a domain formed by the second control device and network devices managed by the second control device;

The sender 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.

According to the above aspect and any possible implementation, an implementation is further provided, the topology information sent by the sender including the topology information of the first domain and the sender sent by the sender include The topology information of the topology information of the second domain is topology information obtained by the sender after summarizing the topology information of the first domain and the topology information of the second domain.

According to the above aspect and any possible implementation manner, an implementation manner is further provided, the topology information including the topology information of the first domain sent by the sender is the first domain received by the sender The topology information of a domain; the topology information including the topology information of a second domain sent by the sender is the topology information of the second domain received by the sender.

It can be seen from the above technical solutions that, on the one hand, in this embodiment of the present application, the first control device obtains 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 domain. A domain composed of network devices managed by the control device, and the first control device receives topology information of the second domain to which the second control device belongs sent by the second control device, and the second domain is the second domain of the first control device. A domain formed by two control devices and network devices 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 control device, and can Avoid the problem of increasing the processing load of the control device in the prior art because the control device needs to collect the topology information of the entire network through the network device managed by the control device, thereby reducing the processing load of the control device and facilitating the expansion of the network scale.

It can be seen from the above technical solution that, on the other hand, in this embodiment of the present application, the topology collection device receives the topology information of the first domain to which the first control device belongs, which is sent by the first control device, and the first domain is the first domain of the first control device. A domain formed by a control device and network devices managed by the first control device, and the topology collection device receives topology information of the second domain to which the second control device belongs sent by the second control device, the The second domain is a domain formed by the second control device and network devices 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 The second 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 problem in the prior art that all control devices need to be managed by the control device. The network device collects the topology information of the entire network, which increases the processing load of the control device, thereby reducing the processing load of the control device and facilitating the expansion of the network scale.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without any creative effort.

FIG. 1 is a schematic flowchart of a topology information processing method provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of domain division of the entire network in the embodiment corresponding to FIG. 1;

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

FIG. 4 is a schematic flowchart of a topology information processing method provided in another embodiment of the present application;

FIG. 5 is a schematic structural diagram of a control device provided by another embodiment of the present application;

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

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

FIG. 8 is a schematic structural diagram of a topology collection device provided by another embodiment of the present application.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

In addition, the term "and/or" in this article is only an association relationship describing associated objects, which means that there may be three relationships, for example, A and/or B, which may mean: A exists alone, A and B exist at the same time, There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

It should be noted that the technical solution of the present invention can be applied to a centralized system in which control and forwarding are separated, such as an OpenFlow system and the like.

Fig. 1 is a schematic flowchart of a method for processing topology information provided by an embodiment of the present application, the method is applied to a centralized system in which control and forwarding are separated, and the system includes a first control device and a second control device, and the first control device A network device managed by a control device and a network device managed by the second control device are shown in FIG. 1 .

101. 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 formed by the first control device and network devices managed by the first control device .

102. 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 is the second control device and the second control device A domain of managed network devices.

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 can be divided into several first domains and several second domains, as shown in Figure 2, the specific division method can be manually designated by the operator, or automatically designated by the computer Domain division, which is not limited in this embodiment.

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

It should be noted that, in the OpenFlow system, the first control device of the execution subject of the above-mentioned 101, 102 and 103 may be a control server (Controller); the network device managed by the first control device may be in the OpenFlow system OpenFlow switch (OpenFlowSwitch); Correspondingly, 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, under the OpenFlow system, Can also be an OpenFlow switch.

Optionally, in a possible implementation manner of this embodiment, the topology information including the topology information of the first domain may combine the topology information of the first domain and the topology information of the second domain for the first control device. The topology information obtained after summarizing the topology information of the second domain.

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

Optionally, in a possible implementation manner of this embodiment, in 101, the first control device may specifically use an 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 use the IGP to obtain (that is, obtain by performing a synchronization operation) the topology information of the first domain. Compared with the prior art, the first control device and the network devices managed by the first control device only need to use IGP to synchronize the topology information of the first domain to which the first control device belongs, without needing to synchronize the topology information of the entire network , which can effectively reduce the processing load of the first control device and network devices managed by the first control device.

Wherein, the IGP may include an intermediate system to intermediate system (Intermediate System to Intermediate System, ISIS) protocol or a shortest path first (Open Shortest Path First, OSPF) protocol and other protocols.

Optionally, in a possible implementation manner of this embodiment, in 101, the first control device may specifically use LLDP to obtain 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 a network device managed by the first control device, for example, a Transmission Control Protocol (Transmission Control Protocol, TCP) connection, and the first control device may pass The established communication connection obtains topology information of network devices 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 communication connections with network devices managed by the first control device in the same domain to which the first control device belongs, so as to obtain the topology of the first domain Information, without establishing a communication connection with the network devices managed by the control device in the entire network (that is, the network devices managed by the first control device and the network devices managed by the second control device), so as to obtain the topology information of the entire network , which can effectively reduce the processing load of the first control device.

Optionally, in a possible implementation manner of this embodiment, the first control device serves as a topology collection device, and may be any control device. Specifically, the plurality of control devices in the system may specifically determine one control device as the first control device according to a preset selection strategy, and other control devices may be the second control devices.

For example, the selection strategy may be to select the control device with the largest or smallest value, such as an IP address, as the first control device according to the management identification information; for another example, the selection strategy may also be based on the device identifier, Select the control device with the largest or smallest value, such as electronic serial number (Electronic Serial Numbers, ESN) identification (ESN ID) or media access control (MediaAccess Control, MAC), etc., 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 used as an example below. 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 and AP managed by Master3 7 forms Domain 3; Master 4, and AP 8 and AP 9 managed by Master 4 form Domain 4.

In a possible implementation manner, Master 1, Master 2, Master 3, and Master 4 may specifically determine Master 1 as the first control device according to a preset selection strategy. First of all, Master1, Master 2, Master 3, and Master 4 can obtain the topology information of their respective domains through the APs in their respective domains, that is, Master 1 obtains the topology information of Domain 1, Master 2 obtains the topology information of Domain 2, and Master 3 obtains the topology information of Domain 2. Domain 3 topology information, Master 4 obtains domain 4 topology information. Then, Master 2, Master 3, and Master 4 send to Master 1 the topology information of their respective domains, so that Master 1 can obtain the topology information of the entire network. Then, Master 1 summarizes the topology information of Domain 2 to which Master 2 belongs, the topology information of Domain 3 to which Master 3 belongs, and the topology information of Domain 4 to which Master 4 belongs, and the topology information of Domain 1 to which it belongs. Send it to Master 2, Master 3 and Master 4, so that Master 2, Master 3 and Master 4 all get the topology information of the entire network.

In this embodiment, the first control device obtains the topology information of the first domain to which the first control device belongs, and the first domain is composed of the first control device and network devices managed by the first control device domain, and 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 is the second control device and the second A domain composed of network devices managed by the control device, so that the first control device can send topology information including the topology information of the first domain to the second control device, which can avoid the control device in the prior art It is necessary to collect the topology information of the entire network through the network equipment managed by the control equipment, which increases the processing burden of the control equipment, thereby reducing the processing burden of the control equipment and facilitating the expansion of the network scale.

Fig. 4 is a schematic flowchart of a topology information processing method provided by another embodiment of the present application, the method is applied to a centralized system with separate control and forwarding, and the system includes a first control device, a second control device and a topology collection device , and network devices managed by the first control device and network devices managed by the second control device, 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 is sent by the first control device, and the first domain is managed by the first control device and the first control device A domain composed of network devices.

402. 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 is managed by the second control device and the second control device A domain composed of network devices.

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

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

Optionally, in a possible implementation of this embodiment, the topology collection device is an independently configured server, for example, a control server, and this server can communicate with each control device (that is, the first control device and the second control device device) to communicate.

In this embodiment, the entire network can be divided into several first domains and several second domains, as shown in Figure 2, the specific division method can be manually designated by the operator, or automatically designated by the computer Domain division, which is not limited in this embodiment.

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

It should be noted that the first control device may be a control server (Controller) under the OpenFlow system; the network device managed by the first control device may be an OpenFlow switch (OpenFlow Switch) under the OpenFlow system; correspondingly , 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 this embodiment, both the topology information including the topology information of the first domain and the topology information including the topology information of the second domain may be the topology collection device The topology information 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 this embodiment, the topology information including the topology information of the first domain may also be the topology information of the first domain obtained by the topology collection device.

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

Optionally, in a possible implementation manner of this embodiment, the first control device may specifically use an 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 use the IGP to obtain (that is, obtain by performing a synchronization operation) the topology information of the first domain. Compared with the prior art, the first control device and the network devices managed by the first control device only need to use IGP to synchronize the topology information of the first domain to which the first control device belongs, without needing to synchronize the topology information of the entire network , which can effectively reduce the processing load of the first control device and network devices managed by the first control device.

Wherein, the IGP may include an intermediate system to intermediate system (Intermediate System to Intermediate System, ISIS) protocol or a shortest path first (Open Shortest Path First, OSPF) protocol and other protocols.

Optionally, in a possible implementation manner of this embodiment, the first control device may specifically use LLDP to 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 a network device managed by the first control device, for example, a Transmission Control Protocol (Transmission Control Protocol, TCP) connection, and the first control device may pass The established communication connection obtains topology information of network devices 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 communication connections with network devices managed by the first control device in the same domain to which the first control device belongs, so as to obtain the topology of the first domain Information, without establishing a communication connection with the network devices managed by the control device in the entire network (that is, the network devices managed by the first control device and the network devices managed by the second control device), so as to obtain the topology information of the entire network , which can effectively reduce the processing load of the first control device.

It can be understood that, similarly, the second control device may also use a similar method to obtain the topology information of the second domain to which the second control device belongs, which will not be repeated here.

In order to make the method provided by the embodiment of the present application clearer, the network topology shown in FIG. 3 will be used as an example below. 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 and AP managed by Master3 7 forms Domain 3; Master 4, and AP 8 and AP 9 managed by Master 4 form Domain 4.

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 their respective domains through the APs in their respective domains, that is, Master 1 obtains the topology information of Domain 1, Master 2 obtains the topology information of Domain 2, and Master 3 obtains the topology information of Domain 2. Domain 3 topology information, Master 4 obtains domain 4 topology information. Then, Master 1, Master 2, Master 3, and Master 4 send the obtained topology information of their respective domains to the server, so that the server can obtain the topology information of the entire network. Then, the server aggregates the received topology information of Domain 1 to which Master 1 belongs, domain 2 to which Master 2 belongs, topology information of Domain 3 to which Master 3 belongs, and topology information of Domain 4 to which Master 4 belongs, to obtain topology information, Send it to Master 1, Master 2, Master 3 and Master 4, so that Master 1, Master 2, Master 3 and Master 4 can all 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 received by the topology collection device from the first control device, and the first domain is the first control device and the first control device. A domain composed of network devices managed by the device, and the topology collection device receives topology information of the second domain to which the second control device belongs sent by the second control device, and the second domain is the second control device A domain formed by devices and network devices 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 control device, and the topology The 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 in the prior art that the control device needs to collect the topology information of the entire network via the network device managed by the control device As a result, the processing burden of the control device increases, thereby reducing the processing burden of the control device, which is beneficial to expanding the network scale.

It should be noted that for the foregoing method embodiments, for the sake of simple description, they are expressed as a series of action combinations, but those skilled in the art should know that the present application is not limited by the described action sequence. Depending on the application, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions and modules involved are not necessarily required by this application.

In the foregoing embodiments, the descriptions of each embodiment have their own emphases, and for parts not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments.

Fig. 5 is a schematic structural diagram of a control device provided by another embodiment of the present application. The control device is applied to a centralized system that separates control and forwarding. The system includes the control device and a second control device, and the control device 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 in this embodiment may include an obtaining unit 51 , a receiving unit 52 and a sending unit 53 . Wherein, the obtaining unit 51 is 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 53, the first domain being the control device and the A domain composed of network devices managed by the control device; a receiving unit 52 configured to receive the topology information of the second domain to which the second control device belongs sent by the second control device, and convert the topology information of the second domain to transmitted to the sending unit 53, the second domain is the domain formed by the second control device and the network devices managed by the second control device; the sending unit 53 is used for the control device to include The topology information of the topology information of the first domain is sent to the second control device.

In this embodiment, the entire network can be divided into several first domains and several second domains, as shown in Figure 2, the specific division method can be manually designated by the operator, or automatically designated by the computer Domain division, which is not limited in this embodiment.

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

It should be noted that the control device can be a control server (Controller) under the OpenFlow system; the network device managed by the control device can be an OpenFlow switch (OpenFlow Switch) under the OpenFlow system; The second control device corresponding to the 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 of this embodiment, the topology information sent by the sending unit 53 that includes the topology information of the first domain may be the sending unit 53 sending the topology information of the first domain The topology information obtained after summarizing the topology information and the topology information of the second domain.

Optionally, in a possible implementation of this embodiment, the topology information including the topology information of the first domain sent by the sending unit 53 may also be the first domain received by the sending unit 53. Domain topology information.

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

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

It should be noted that the control device provided in this embodiment is used to correspondingly execute the method of the embodiment shown in FIG. 1 , and the details already described in the embodiment shown in FIG. 1 will not be repeated here.

In this embodiment, the control device obtains the topology information of the first domain to which the control device belongs through the obtaining unit, the first domain is a domain composed of the control device and network devices managed by the control device, and the receiving unit receiving the topology information of the second domain to which the second control device belongs and sent by the second control device, where the second domain is a domain formed by the second control device and network devices 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, which can avoid that in the prior art, the control device needs to collect the network information of the entire network via the network device managed by the control device. The problem of increasing the processing load of the control device caused by the topology information, thereby reducing the processing load of the control device, is conducive to expanding the network scale.

FIG. 6 is a schematic structural diagram of a topology collection device provided by another embodiment of the present application. The topology collection device is applied to a centralized system that separates control and forwarding. The system includes a first control device, a second control device, and the A topology collection device, and a network device managed by the first control device and a 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 . Wherein, the receiving unit 61 is 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 62, the second A domain is a domain formed by the first control device and network devices managed by the first control device; the receiving unit 61 is further configured to receive the information sent by the second control device that the second control device belongs to topology information of the second domain, and transmitting the topology information of the second domain to the sending unit 62, the second domain is constituted by the second control device and network devices managed by the second control device domain; the sending unit 62 is configured to send the topology information including the topology information of the first domain to the second control device; the sending unit 62 is also configured to send the topology information including the topology information of the second domain The topology information of the topology information is sent to the first control device.

Optionally, in a possible implementation of this embodiment, the topology collection device is an independently configured server, for example, a control server, and this server can communicate with each control device (that is, the first control device and the second control device device) to communicate.

In this embodiment, the entire network can be divided into several first domains and several second domains, as shown in Figure 2, the specific division method can be manually designated by the operator, or automatically designated by the computer Domain division, which is not limited in this embodiment.

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

It should be noted that the first control device may be a control server (Controller) under the OpenFlow system; the network device managed by the first control device may be an OpenFlow switch (OpenFlow Switch) under the OpenFlow system; correspondingly , 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 of this embodiment, the topology information including the topology information of the first domain sent by the sending unit 62 and the topology information including the topology information of the second domain sent by the sending unit 62 The topology information of the topology information may be topology information obtained by the sending unit 62 after summarizing the topology information of the first domain and the topology information of the second domain.

Optionally, in a possible implementation of this embodiment, the topology information including the topology information of the first domain sent by the sending unit 62 may also be the first domain received by the sending unit 62. Domain topology information.

Optionally, in a possible implementation of this embodiment, the topology information including the topology information of the second domain sent by the sending unit 62 may also be the topology information of the second domain received by the sending unit 62. topology information.

In this embodiment, the topology collection device receives the topology information of the first domain to which the first control device belongs sent by the first control device through the receiving unit, and the first domain is the first control device and the second domain. A domain composed of network devices managed by a control device, and the receiving unit 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 is the second domain of the second control device. A domain formed by the control device and network devices managed by the second control device, so that the sending unit can send topology information including the topology information of the first domain to the second control device, and the sending unit can Sending the topology information including the topology information of the second domain to the first control device can avoid the problem in the prior art that the control device needs to collect the topology information of the entire network via the network device managed by the control device. The problem of increasing the processing load of the control device, thereby reducing the processing load of the control device, is conducive to expanding the network scale.

Fig. 7 is a schematic structural diagram of a control device provided by another embodiment of the present application. The control device is applied to a centralized system that separates control and forwarding. The system includes the control device and a second control device, and the control device 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 in this embodiment may include a processor 71 , a receiver 72 and a transmitter 73 . Wherein, the processor 71 is 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 transmitter 73, the first domain being the control device and the A domain composed of network devices managed by the control device; a receiver 72, configured to receive the topology information of the second domain to which the second control device belongs sent by the second control device, and convert the topology information of the second domain to transmitted to the sender 73, the second domain is the domain formed by the second control device and the network devices managed by the second control device; the sender 73 is used for the control device to include The topology information of the topology information of the first domain is sent to the second control device.

In this embodiment, the entire network can be divided into several first domains and several second domains, as shown in Figure 2, the specific division method can be manually designated by the operator, or automatically designated by the computer Domain division, which is not limited in this embodiment.

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

It should be noted that the control device can be a control server (Controller) under the OpenFlow system; the network device managed by the control device can be an OpenFlow switch (OpenFlow Switch) under the OpenFlow system; The second control device corresponding to the 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 of this embodiment, the topology information that includes the topology information of the first domain sent by the sender 73 may be the sender 73 sending the topology information of the first domain to The topology information obtained after summarizing the topology information and the topology information of the second domain.

Optionally, in a possible implementation of this embodiment, the topology information including the topology information of the first domain sent by the sender 73 may also be the first domain received by the sender 73. Domain topology information.

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

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

It should be noted that the control device provided in this embodiment is used to correspondingly execute the method of the embodiment shown in FIG. 1 , and the details already described in the embodiment shown in FIG. 1 will not be repeated here.

In this embodiment, the control device obtains the topology information of the first domain to which the control device belongs through the obtaining unit, the first domain is a domain composed of the control device and network devices managed by the control device, and the receiving unit receiving the topology information of the second domain to which the second control device belongs and sent by the second control device, where the second domain is a domain formed by the second control device and network devices 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, which can avoid that in the prior art, the control device needs to collect the network information of the entire network via the network device managed by the control device. The problem of increasing the processing load of the control device caused by the topology information, thereby reducing the processing load of the control device, is conducive to expanding the network scale.

Fig. 8 is a schematic structural diagram of a topology collection device provided by another embodiment of the present application. The topology collection device is applied to a centralized system that separates control and forwarding, and the system includes a first control device, a second control device, and the A topology collection device, and a network device managed by the first control device and a 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 . Wherein, the receiver 81 is 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 transmitter 82, the second A domain is a domain formed by the first control device and network devices managed by the first control device; the receiver 81 is also configured to receive the information sent by the second control device that the second control device belongs to The topology information of the second domain, and transmitting the topology information of the second domain to the transmitter 82, the second domain is constituted by the second control device and the network devices managed by the second control device domain; the sender 82 is configured to send the topology information including the topology information of the first domain to the second control device; the sender 82 is also configured to send the topology information including the topology information of the second domain The topology information of the topology information is sent to the first control device.

Optionally, in a possible implementation of this embodiment, the topology collection device is an independently configured server, for example, a control server, and this server can communicate with each control device (that is, the first control device and the second control device device) to communicate.

In this embodiment, the entire network can be divided into several first domains and several second domains, as shown in Figure 2, the specific division method can be manually designated by the operator, or automatically designated by the computer Domain division, which is not limited in this embodiment.

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

It should be noted that the first control device may be a control server (Controller) under the OpenFlow system; the network device managed by the first control device may be an OpenFlow switch (OpenFlow Switch) under the OpenFlow system; correspondingly , 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 of this embodiment, the topology information including the topology information of the first domain sent by the transmitter 82 and the topology information including the topology information of the second domain sent by the transmitter 82 The topology information of the topology information may be the topology information obtained by the transmitter 82 after summarizing the topology information of the first domain and the topology information of the second domain.

Optionally, in a possible implementation of this embodiment, the topology information including the topology information of the first domain sent by the sender 82 may also be the first domain received by the sender 82. Domain topology information.

Optionally, in a possible implementation of this embodiment, the topology information including the topology information of the second domain sent by the transmitter 82 may also be the topology information of the second domain received by the transmitter 82. topology information.

In this embodiment, the topology collection device receives the topology information of the first domain to which the first control device belongs sent by the first control device through the receiving unit, and the first domain is the first control device and the second domain. A domain composed of network devices managed by a control device, and the receiving unit 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 is the second domain of the second control device. A domain formed by the control device and network devices managed by the second control device, so that the sending unit can send topology information including the topology information of the first domain to the second control device, and the sending unit can Sending the topology information including the topology information of the second domain to the first control device can avoid the problem in the prior art that the control device needs to collect the topology information of the entire network via the network device managed by the control device. The problem of increasing the processing load of the control device, thereby reducing the processing load of the control device, is conducive to expanding the network scale.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

The above-mentioned integrated units implemented in the form of software functional units may be stored in a computer-readable storage medium. The above-mentioned software functional units are stored in a storage medium, and include several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) or a processor (processor) execute the methods described in various embodiments of the present application. partial steps. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), magnetic disk or optical disc, etc., which can store program codes. medium.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims (15)

1. topology information processing method, it is characterized in that, described method is applied to control and transmits the integrated system that separates, described system comprises the first control appliance and the second control appliance, and the network equipment of the network equipment of described the first control appliance management and the management of described the second control appliance, the method comprises:

Described the first control appliance obtains the topology information in affiliated the first territory of described the first control appliance, and described the first territory is the territory that the network equipment of described the first control appliance and the management of described the first control appliance consists of;

Described the first control appliance receives the topology information in affiliated second territory of described the second control appliance of described the second control appliance transmission, and described the second territory is the territory that the network equipment of described the second control appliance and the management of described the second control appliance consists of;

The topology information that described the first control appliance will comprise the topology information in described the first territory sends to described the second control appliance.

2. method according to claim 1, it is characterized in that the topology information that the described topology information that comprises the topology information in described the first territory obtains after to be described the first control appliance with the topology information in the topology information in described the first territory and described the second territory gather.

3. method according to claim 1 is characterized in that, the described topology information that comprises the topology information in described the first territory is the topology information in described first territory of described the first control appliance acquisition.

4. the described method of arbitrary claim is characterized in that according to claim 1～3, and described the first control appliance obtains the topology information in affiliated the first territory of described the first control appliance, comprising:

Described the first control appliance utilizes IGP, obtains the topology information in affiliated the first territory of described the first control appliance; Perhaps

Described the first control appliance utilizes LLDP, obtains the topology information in affiliated the first territory of described the first control appliance.

5. topology information processing method, it is characterized in that, described method is applied to control and transmits the integrated system that separates, described system comprises the first control appliance, the second control appliance and collecting topology equipment, and the network equipment of the network equipment of described the first control appliance management and the management of described the second control appliance, the method comprises:

Described collecting topology equipment receives the topology information in affiliated first territory of described the first control appliance of described the first control appliance transmission, and described the first territory is the territory that the network equipment of described the first control appliance and the management of described the first control appliance consists of;

Described collecting topology equipment receives the topology information in affiliated second territory of described the second control appliance of described the second control appliance transmission, and described the second territory is the territory that the network equipment of described the second control appliance and the management of described the second control appliance consists of;

The topology information that described collecting topology equipment will comprise the topology information in described the first territory sends to described the second control appliance;

The topology information that described collecting topology equipment will comprise the topology information in described the second territory sends to described the first control appliance.

6. method according to claim 5, it is characterized in that the topology information of the described topology information that comprises described the first territory and the described topology information that comprises the topology information in the second territory are the topology information that obtains after described collecting topology equipment gathers the topology information in the topology information in described the first territory and described the second territory.

7. method according to claim 5 is characterized in that, the described topology information that comprises the topology information in described the first territory is the topology information in described first territory of described collecting topology equipment acquisition; The described topology information that comprises the topology information in the second territory is the topology information in described second territory of described collecting topology equipment acquisition.

8. the described method of arbitrary claim is characterized in that according to claim 5～7, and described the first control appliance obtains the topology information in affiliated the first territory of described the first control appliance, comprising:

Described the first control appliance utilizes IGP, obtains the topology information in affiliated the first territory of described the first control appliance; Perhaps

Described the first control appliance utilizes LLDP, obtains the topology information in affiliated the first territory of described the first control appliance.

9. control appliance, it is characterized in that, the integrated system that described Application of control device separates with forwarding in control, described system comprises described control appliance and the second control appliance, and the network equipment of the network equipment of described control appliance management and the management of described the second control appliance, this control appliance comprises:

Obtain the unit, be used for obtaining the topology information in affiliated the first territory of described control appliance, and the topology information in described the first territory is transferred to transmitting element, described the first territory is the territory that the network equipment of described control appliance and the management of described control appliance consists of;

Receiving element, topology information for the second territory under described the second control appliance that receives described the second control appliance transmission, and the topology information in described the second territory is transferred to described transmitting element, described the second territory is the territory that the network equipment of described the second control appliance and the management of described the second control appliance consists of;

Described transmitting element, the topology information that will comprise the topology information in described the first territory for described control appliance sends to described the second control appliance.

10. control appliance according to claim 9, it is characterized in that the topology information that the described topology information that comprises the topology information in described the first territory that described transmitting element sends obtains after to be described transmitting element with the topology information in the topology information in described the first territory and described the second territory gather.

11. control appliance according to claim 9 is characterized in that, the described topology information that comprises the topology information in described the first territory that described transmitting element sends is the topology information in described first territory of described transmitting element reception.

12. the described control appliance of arbitrary claim is characterized in that according to claim 9～11, described acquisition unit specifically is used for

Utilize IGP, obtain the topology information in affiliated the first territory of described control appliance; Perhaps

Utilize LLDP, obtain the topology information in affiliated the first territory of described control appliance.

13. collecting topology equipment, it is characterized in that, described collecting topology equipment is applied to control and transmits the integrated system that separates, described system comprises the first control appliance, the second control appliance and described collecting topology equipment, and the network equipment of the network equipment of described the first control appliance management and the management of described the second control appliance, this collecting topology equipment comprises:

Receiving element, topology information for the first territory under described the first control appliance that receives described the first control appliance transmission, and the topology information in described the first territory is transferred to transmitting element, described the first territory is the territory that the network equipment of described the first control appliance and the management of described the first control appliance consists of;

Described receiving element, also be used for receiving the topology information in the second territory under described the second control appliance that described the second control appliance sends, and the topology information in described the second territory is transferred to described transmitting element, described the second territory is the territory that the network equipment of described the second control appliance and the management of described the second control appliance consists of;

Described transmitting element, the topology information that is used for comprising the topology information in described the first territory sends to described the second control appliance;

Described transmitting element, also the topology information for the topology information that will comprise described the second territory sends to described the first control appliance.

14. collecting topology equipment according to claim 13, it is characterized in that the topology information of the described topology information that comprises described the first territory that described transmitting element sends and the described topology information that comprises the topology information in the second territory that described transmitting element sends are the topology information that obtains after described transmitting element gathers the topology information in the topology information in described the first territory and described the second territory.

15. collecting topology equipment according to claim 13 is characterized in that, the described topology information that comprises the topology information in described the first territory that described transmitting element sends is the topology information in described first territory of described transmitting element reception; The described topology information that comprises the topology information in the second territory that described transmitting element sends is the topology information in described second territory of described transmitting element reception.

Images