CN105635223A - Method and device of synchronizing network state - Google Patents
Method and device of synchronizing network state Download PDFInfo
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- CN105635223A CN105635223A CN201410623562.1A CN201410623562A CN105635223A CN 105635223 A CN105635223 A CN 105635223A CN 201410623562 A CN201410623562 A CN 201410623562A CN 105635223 A CN105635223 A CN 105635223A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/40—Support for services or applications
Abstract
The embodiment of the present invention provides a method and device used for synchronizing a network state. The method comprises the steps of using a first forwarding device to receive a control message, wherein the control message comprises the network state information represented by a file format, and the network state information is used to represent the attribute of a second forwarding device; using the first forwarding device to obtain the network state information from the control message. By the scheme, the network state synchronization does not depend on a routing protocol negotiation result, and the efficiency of synchronizing the network state is conducive to being improved.
Description
Technical field
The present invention relates to communication technical field, be specifically related to a kind of for the method for synchronizing network state, the first forwarding unit and the network equipment.
Background technology
Generally, route refers to the routing information that guide data bag forwards, and Routing Protocol refers to the regulation and standard appointed in advance in route guide data bag repeating process. For example, Routing Protocol can be data packet format, and e.g., data packet format is that (English: Type-length-value is called for short: TLV) type-length-value.
The network that operator is set up can include the first forwarding unit and the second forwarding unit of supporting different privately owned Routing Protocols. At described first forwarding unit and described second forwarding unit based on respective privately owned Routing Protocol, carry out network state when synchronizing, it is necessary between described first forwarding unit and described second forwarding unit, carry out the negotiation of privately owned Routing Protocol. For example, described second forwarding unit can by carrying out privately owned Routing Protocol negotiation with described first forwarding unit, know the implication that in the privately owned Routing Protocol that described first forwarding unit adopts, TLV represents, in order to resolve and obtain the network state information that the privately owned Routing Protocol based on described first forwarding unit sends. Described first forwarding unit can by carrying out privately owned Routing Protocol negotiation with described second forwarding, know the implication that in the privately owned Routing Protocol that described second forwarding unit adopts, TLV represents, in order to resolve and obtain the network state information that the privately owned Routing Protocol based on described second forwarding unit sends. So, carry out the scheme of network state synchronization based on protocol negotiation, limit the efficiency of synchronizing network state.
Summary of the invention
What the embodiment of the present invention provided is used for for the method for synchronizing network state, the first forwarding unit and the network equipment, is favorably improved the efficiency of synchronizing network state.
For this, the embodiment of the present invention provides following technical scheme:
First aspect, it is provided that a kind of method for synchronizing network state, described method includes:
First forwarding unit receives and controls message, and described control message includes the network state information represented as a file format, and described network state information is for representing the attribute that the second forwarding unit has;
Described first forwarding unit obtains described network state information from described control message.
In conjunction with first aspect, it is provided that the implementation that the first of first aspect is possible, also include:
Described first forwarding unit utilizes described network state information, updates the network state information storehouse that described first forwarding unit preserves.
The first possible implementation in conjunction with first aspect or first aspect, additionally provide the implementation that the second of first aspect is possible, described file format is that extensible markup language is (English: ExtensibleMarkupLanguage, it is called for short: XML) (English: JavaScriptObjectNotation is called for short: JSON) form for form or Java scripting object markup language.
In conjunction with any one in the implementation that the second of first aspect, the first possible implementation of first aspect and first aspect is possible, additionally provide the third possible implementation of first aspect, described network state information adopts another of future generation (English: YetAnotherNextGeneration, it is called for short: YANG) language describes, and described first forwarding unit obtains described network state information from described control message and includes:
Described first forwarding unit utilizes network configuration, and (English: NetworkConfiguration is called for short: Netconf) agreement, resolves described control message, it is thus achieved that described network state information.
In conjunction with any one in first aspect, the first possible implementation of first aspect, the possible implementation of the second of first aspect and the third possible implementation of first aspect, additionally providing the 4th kind of possible implementation of first aspect, described first forwarding unit receives control message and includes: described first forwarding unit receives the described control message of self-controller; Or, described first forwarding unit receives the described control message from described second forwarding unit.
Second aspect, it is provided that a kind of method for synchronizing network state, described method includes:
The network equipment obtains network state information, and described network state information is for representing the attribute that the second forwarding unit has;
Described network state information is encoded to file format by the described network equipment, it is thus achieved that controlling message, described control message includes the described network state information represented with described file format;
The described network equipment sends described control message to the first forwarding unit.
In conjunction with second aspect, it is provided that the implementation that the first of second aspect is possible, described file format is XML format or JSON form.
In conjunction with the first possible implementation of second aspect or second aspect, additionally providing the implementation that the second of second aspect is possible, described network state information is encoded to file format and includes by the described network equipment:
The described network equipment adopts YANG language to describe described network state information.
In conjunction with any one in the implementation that the second of second aspect, the first possible implementation of second aspect and second aspect is possible, additionally providing the third possible implementation of second aspect, the described network equipment is controller or described second forwarding unit.
The third aspect, it is provided that a kind of first forwarding unit, described first forwarding unit includes:
Receiving unit, be used for receiving control message, described control message includes the network state information represented as a file format, and described network state information is for representing the attribute that the second forwarding unit has;
Obtain unit, for obtaining described network state information from the described control message of described reception unit reception.
In conjunction with the third aspect, it is provided that the implementation that the first of the third aspect is possible, also include:
Updating block, for the described network state information utilizing described acquisition unit to obtain, updates the network state information storehouse that described first forwarding unit preserves.
In conjunction with the first possible implementation of the third aspect or the third aspect, additionally providing the implementation that the second of the third aspect is possible, described file format is XML format or JSON form.
In conjunction with any one in the implementation that the second of the third aspect, the first possible implementation of the third aspect and the third aspect is possible, additionally provide the third possible implementation of the third aspect, described network state information adopts YANG language to describe
Described acquisition unit, specifically for utilizing Netconf agreement, resolves the described control message that described reception unit receives, it is thus achieved that described network state information.
In conjunction with any one in the third aspect, the first possible implementation of the third aspect, the possible implementation of the second of the third aspect and the third possible implementation of the third aspect, additionally providing the 4th kind of possible implementation of the third aspect, described reception unit has the described control message for receiving self-controller; Or, described reception unit is specifically for receiving the described control message from described second forwarding unit.
Fourth aspect, it is provided that a kind of network equipment, the described network equipment includes:
First obtains unit, is used for obtaining network state information, and described network state information is for representing the attribute that the second forwarding unit has;
Second obtains unit, and the described network state information obtained for obtaining unit by described first is encoded to file format, it is thus achieved that controlling message, described control message includes the described network state information represented with described file format;
Transmitting element, for sending described control message to the first forwarding unit.
In conjunction with fourth aspect, it is provided that the implementation that the first of fourth aspect is possible, described file format is XML format or JSON form.
In conjunction with the first possible implementation of fourth aspect or fourth aspect, additionally providing the implementation that the second of fourth aspect is possible, described second obtains unit specifically for adopting YANG language to describe described network state information.
5th aspect, it is provided that a kind of first forwarding unit, described first forwarding unit includes: processor, memorizer and communication interface;
Described memorizer, is used for storing programmed instruction and data;
Described processor, for reading programmed instruction and the data of storage in described memorizer, performs following operation:
Described processor is received by described communication interface and controls message, and described control message includes the network state information represented as a file format, and described network state information is for representing the attribute that the second forwarding unit has;
Described processor obtains described network state information from described control message.
In conjunction with the 5th aspect, it is provided that the first possible implementation of the 5th aspect, also include:
Described processor utilizes described network state information, updates the network state information storehouse that described first forwarding unit preserves.
In conjunction with the first possible implementation of the 5th aspect or the 5th aspect, additionally providing the implementation that the second of the 5th aspect is possible, described file format is XML format or JSON form.
In conjunction with any one in the implementation that the second of the 5th aspect, the first possible implementation of the 5th aspect and the 5th aspect is possible, additionally provide the third possible implementation of the 5th aspect, described network state information adopts YANG language to describe, and described processor obtains described network state information from described control message and includes:
Described processor utilizes network configuration Netconf agreement, resolves described control message, it is thus achieved that described network state information.
In conjunction with any one in the 5th aspect, the first possible implementation of the 5th aspect, the possible implementation of the second of the 5th aspect or the third possible implementation of the 5th aspect, additionally providing the 4th kind of possible implementation of the 5th aspect, described processor receives control message by described communication interface and includes: described processor receives the described control message of self-controller by described communication interface; Or, described processor receives the described control message from described second forwarding unit by described communication interface.
6th aspect, it is provided that a kind of network equipment, the described network equipment includes: processor, memorizer and communication interface;
Described memorizer, is used for storing programmed instruction and data;
Described processor, for reading programmed instruction and the data of storage in described memorizer, performs following operation:
Described processor obtains network state information by described communication interface, and described network state information is for representing the attribute that the second forwarding unit has;
Described network state information is encoded to file format by described processor, it is thus achieved that controlling message, described control message includes the described network state information represented with described file format;
Described processor sends described control message by described communication interface to the first forwarding unit.
In conjunction with the 6th aspect, it is provided that the first possible implementation of the 6th aspect, described file format is XML format or JSON form.
In conjunction with the first possible implementation of the 6th aspect or the 6th aspect, additionally providing the implementation that the second of the 6th aspect is possible, described network state information is encoded to file format and includes by described processor:
Described processor adopts YANG language to describe described network state information.
In conjunction with any one in the implementation that the second of the 6th aspect, the first possible implementation of the 6th aspect and the 6th aspect is possible, additionally providing the third possible implementation of the 6th aspect, the described network equipment is controller or described second forwarding unit.
The method for synchronizing network state of the embodiment of the present invention and device, when the network state information of the second forwarding unit being synchronized to other forwarding unit in network, such as it is synchronized on the first forwarding unit, the network state information of the second forwarding unit can be encoded to file format by the second forwarding unit or controller, sends the network state information that represents as a file format to the first forwarding unit by controlling message. After first forwarding unit receives control message, from controlling message obtains the network state information represented as a file format, and then acquisition network state information can be resolved, it is achieved the network state information of the second forwarding unit is synchronized to the first forwarding unit. Between the first forwarding unit and the second forwarding unit, the process of synchronizing network state is good in Routing Protocol negotiation result, is favorably improved the efficiency of synchronizing network state.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the application, for those of ordinary skill in the art, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 be a kind of method for synchronizing network state of the embodiment of the present invention flow chart;
Fig. 2 is the flow chart of the another kind of method for synchronizing network state of the embodiment of the present invention;
Fig. 3 is the schematic diagram of a kind of first forwarding unit of the embodiment of the present invention;
Fig. 4 is the schematic diagram of a kind of network equipment of the embodiment of the present invention;
The hardware that Fig. 5 is a kind of first forwarding unit of the embodiment of the present invention constitutes schematic diagram;
The hardware that Fig. 6 is a kind of network equipment of the embodiment of the present invention constitutes schematic diagram.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with drawings and embodiments, the embodiment of the present invention is described in further detail.
Common network can include the forwarding unit supporting different privately owned Routing Protocols. Privately owned Routing Protocol can be the Routing Protocol of a certain manufacturer exploitation, and described privately owned Routing Protocol can not be standard routing protocol. Described privately owned Routing Protocol can be on the basis of described standard routing protocol, is provided with the agreement of specific TLV. Such as: in the network that operator is set up, the first forwarding unit supports the first privately owned Routing Protocol, and the second forwarding unit supports the second privately owned Routing Protocol, and the first privately owned Routing Protocol is different from the second privately owned Routing Protocol. First privately owned Routing Protocol can be that (English: TheInternetAssignedNumbersAuthority is called for short: IANA) have registered the agreement of a TLV form at the Internet numeral distributor gear. Second privately owned Routing Protocol can be the agreement that have registered the 2nd TLV form at IANA. So, described first forwarding unit according to the requirement of a described TLV form, can generate the first control message. Described first controls message includes described first network status information. For example, described first network status information is the mark port with described first forwarding unit of described first forwarding unit. Described second forwarding unit according to the requirement of described 2nd TLV form, can generate the second control message. Described second controls message includes described second network state information. For example, described second network state information includes the mark of described second forwarding unit and the port of described second forwarding unit. Described first forwarding unit and described second forwarding unit carry out Routing Protocol negotiation so that described first forwarding unit knows described 2nd TLV form, and described second forwarding unit knows a described TLV form. When described first forwarding unit carries out network state synchronization with described second forwarding unit, described first turn of subset resolves described second and controls message, it is thus achieved that described second network state information. Described second forwarding unit resolves described first and controls message, it is thus achieved that described first network status information. So, the synchronization of network state is completed between described first forwarding unit and described second forwarding unit.
If described first forwarding unit needs and the multiple stage forwarding unit synchronizing network state in described network, then described first forwarding unit needs to hold consultation with each forwarding unit in described multiple stage forwarding unit, to determine the TLV form that described each forwarding unit adopts, add the complexity of synchronizing process. If the Routing Protocol that a certain forwarding unit adopts changes, as updated Routing Protocol or developing new Routing Protocol, it is required for again applying for the registration of to IANA so that the poor expandability of Routing Protocol, development efficiency is relatively low.
For the problems referred to above, the embodiment of the present invention proposes the solution of the efficiency being favorably improved synchronizing network state. This solution be the second forwarding unit in the process of the first forwarding unit synchronizing network status information, described first forwarding unit can obtain control message from described second forwarding unit or controller. Described control message includes the described network state information represented as a file format. Described network state information is the attribute of described second forwarding unit. Described control message is resolved by described first forwarding unit, it is thus achieved that described network state information so that described first forwarding unit, without carrying out the negotiation of privately owned Routing Protocol with described second forwarding unit, is favorably improved the efficiency of synchronizing network state. This solution can be realized by following several embodiments.
In the embodiment of the present invention, the forwarding unit for synchronizing network state can be the equipment that router or switch etc. have forwarding capability, and this can be not specifically limited by the embodiment of the present invention; The message that controls in the embodiment of the present invention is used for transmitting the network state information of forwarding unit, and every message that can be used for transmitting the network state information of forwarding unit or message belong to the category controlling message in the embodiment of the present invention. Control message in the embodiment of the present invention is to illustrate for the network state information carrying the second forwarding unit, the control message a plurality of network state information of also portability in the embodiment of the present invention, every corresponding forwarding unit of network state information, this mode be not illustrated by the embodiment of the present invention.
Method provided by the invention is illustrated by the angle that embodiment corresponding for Fig. 1 is from the first forwarding unit. Described first forwarding unit is the equipment of the network state receiving other forwarding unit. Referring to Fig. 1, the method for synchronizing network state that the embodiment of the present invention provides, it may include:
101, described first forwarding unit receives and controls message, and described control message includes the network state information represented as a file format, and described network state information is for representing the attribute that the second forwarding unit has.
For example, the control message that the embodiment of the present invention provides is different from described first and controls message or described second control message. The payload segment of the described control message that the embodiment of the present invention provides includes a file. For example, described file can be the file of the file of XML format or JSON form. Described file also can adopt other text formatting, is not illustrating one by one at this. So, the first forwarding unit can without carrying out Routing Protocol negotiation with other forwarding unit, and the first forwarding unit can resolve the file format that described control message includes and achieve that synchronizing network state.
In the embodiment of the present invention, the first forwarding unit at least can be in the following manner, it is thus achieved that includes the control message of network state information: it is (English: described control message Controller) sent that described first forwarding unit can receive controller. Or, described first forwarding unit can receive the described control message that described second forwarding unit sends.
For example, described network state information is the network state of the second forwarding unit. The attribute that the network state of described second forwarding unit can have for described second forwarding unit. The procotol that described attribute includes the intrinsic attribute of described second forwarding unit, described second forwarding unit is supported runs at least one in the attribute that relevant attribute is relevant to the connection of other forwarding unit with described second forwarding unit. Network state information can be not specifically limited by the embodiment of the present invention.
For example, the procotol that described second forwarding unit is supported is run relevant attribute and is comprised the steps that described second forwarding unit is in opening, described second forwarding unit is closed and described second forwarding unit is at least one in overload.
For example, described second forwarding unit and miscellaneous equipment connect relevant attribute comprise the steps that connect whether up to, connect up to required expense, connect be in opening, connection is closed and connects at least one that be in init state.
For example, if it is (English: autonomoussystem that described first forwarding unit and described second forwarding unit belong to identical autonomous system, be called for short: AS), then the intrinsic attribute of described second forwarding unit comprises the steps that the identity of described second forwarding unit and belongs at least one port (English: mark interface) of described second forwarding unit. For example, the identity of described second forwarding unit can include at least one in the name of described second forwarding unit and the address of described second forwarding unit. The address of described second forwarding unit can be agreement (English: InternetProtocol, the abbreviation: IP) (English: MediaAccessControl is called for short: MAC) address for address or medium access control of interconnection between network. The mark of described port can include at least one in the name of described port and port numbers. This can be not specifically limited by the embodiment of the present invention. If described first forwarding unit and described second forwarding unit belong to different AS, then the intrinsic attribute of described second forwarding unit comprise the steps that the identity of the described second forwarding unit autonomous system path corresponding with described second forwarding unit (English: autonomoussystempath, be called for short: at least one in AS-PATH). This can be not specifically limited by the embodiment of the present invention.
102, described first forwarding unit obtains described network state information from described control message.
For example, after described first forwarding unit obtains described control message, the file format that can adopt according to described network state information, resolve from described control message and obtain described network state information. If described network state information adopts XML format, described first forwarding unit can adopt simple applications routine interface (English: SimpleApplicationProgrammingInterfaceforXML, the abbreviation: SAX) resolve described control message of XML. If described network state information adopts JSON form, described first forwarding unit can adopt the JSON analytical function (parseJSON) provided in the JavaScript storehouse (jQuery) of browser-cross to resolve described control message. The embodiment of the present invention can not be specifically limited resolving the mode controlling message.
Alternatively, YANG data model language can describe information with XML format or JSON form, and Netconf agreement can resolve the information that YANG data model language describes. If described network state information is employing, YANG data model speech encoding is XML format or the information of JSON form, described first forwarding unit may utilize Netconf agreement, resolve described control message, it is thus achieved that described network state information, namely obtain the attribute that described second forwarding unit has.
Alternatively, after 102, the method for synchronizing network state that the embodiment of the present invention provides, also include:
103, described first forwarding unit utilizes described network state information, updates the network state information storehouse that described first forwarding unit preserves.
For example, described first forwarding unit storage has network state information storehouse (English: StateInformationBase, abbreviation: SIB). Described network state information storehouse can include the network state of the forwarding unit that can communicate with described first forwarding unit, for the route calculating described first network equipment and other forwarding unit. Described can include, with the forwarding unit of described first forwarding unit communication, the forwarding unit that is in same AS, may also include the forwarding unit being in different AS.
For example, described first forwarding unit updates described network state information storehouse and includes: described first forwarding unit determines whether described network state information storehouse includes the first list item, the attribute that described second forwarding unit obtained when described first list item is for recording front primary network state synchronized has. If described network state information storehouse includes described first list item, described first forwarding unit utilizes the attribute that described second forwarding unit that described network state information obtains when replacing described front primary network state synchronized has. For example, described front primary network state synchronized synchronizes relative to this network state. Namely the attribute that described second forwarding unit that described network state information obtains when being the synchronization of this network state has. Described first forwarding unit updates described network state information storehouse and includes: described first forwarding unit utilizes described network state information to cover the information of record in described first list item, that is, in the first list item after renewal record be this network state attribute of synchronizing that the second forwarding unit of obtaining has. So, the process that the embodiment of the present invention synchronizes the network state of the second forwarding unit is just completed.
Alternatively, if described network state information storehouse does not include described first list item, described first forwarding unit updates described network state information storehouse and includes: described first forwarding unit is according to described network state information, create described first list item, write in described first list item by described network state information.
In the method for synchronizing network state that the embodiment of the present invention provides, first forwarding unit can support the analysis mode corresponding with the coded system of network state information, achieve that the network state obtaining different forwarding units, eliminate the process carrying out privately owned Routing Protocol negotiation between each forwarding unit, the success or failure of synchronizing network state are also no longer dependent on the result that Routing Protocol is consulted, and are favorably improved the efficiency of synchronizing network state.
Method shown in Fig. 1, illustrate that the first forwarding unit is from the control message that the embodiment of the present invention provides, resolve the process obtaining network state information, method shown in Fig. 2, illustrate that network state information is encoded by the network equipment, generate the process controlling message that the embodiment of the present invention provides.
Embodiment corresponding for Fig. 2 is that the method embodiment of the present invention provided from the equipment side sending network state illustrates. The network equipment in the equipment of described transmission network state and Fig. 2. The described network equipment can be the second forwarding unit or Controller. Described second forwarding unit is able to the equipment mutual with described first forwarding unit. Described controller is able to the equipment mutual with described second forwarding unit and described first forwarding unit. Referring to Fig. 2, the method for synchronizing network state that the embodiment of the present invention provides, including:
201, the described network equipment obtains network state information, and described network state information is for representing the attribute that described second forwarding unit has.
For example, the described network equipment is described Controller or described second forwarding unit. If the described network equipment is described second forwarding unit, then described second forwarding unit can according to the information of configuration on it, it is thus achieved that network state information, on described second forwarding unit, the information of configuration can include the attribute that described second forwarding unit has. The attribute that the second forwarding unit in the embodiment that attribute that described second forwarding unit has is corresponding with Fig. 1 has is identical, does not repeat them here. If the described network equipment is described Controller, described Controller can be mutual with described second forwarding unit, obtains the described network state information represented as a file format from described second forwarding unit. File format in the embodiment that described file format is corresponding with Fig. 1 is identical, does not repeat them here. Or described Controller can in the process that described second forwarding unit is configured, it is thus achieved that the information of configuration on described second forwarding unit, and then obtain described network state information.
202, described network state information is encoded to file format by the described network equipment, it is thus achieved that controlling message, described control message includes the described network state information represented with described file format.
For example, the described network equipment obtains the network state information of the second forwarding unit described in when this network state synchronizes, and described network state information is encoded to file format, is carried in the load of described control message. That is, the payload segment of described control message includes the described network state information that represents with described file format.
For example, the described network equipment adopts YANG language to describe described network state information, and described network state information is encoded to XML format or JSON form.
For example, if the described network equipment is described Controller, then described Controller can according to the described network state information represented as a file format from described second forwarding unit, it is thus achieved that control message. Or described Controller obtains described network state information, and described network state information is encoded to file format, such as XML format or JSON form. The described network state information represented as a file format generated is carried in described control message by described Controller, such as carries the load at described control message.
For example, if the described network equipment is described second forwarding unit, described network state information is encoded to file format by described second forwarding unit, such as XML format or JSON form. The described network state information represented as a file format generated is carried in described control message by described second forwarding unit, such as carries the load at described control message.
203, the described network equipment sends described control message to described first forwarding unit.
For example, after the described network equipment generates described control message, safety shell protocol can be adopted (English: SecureShell, be called for short: SSH), safe transmission layer protocol (English: TransportLayerSecurity, be called for short: TLS) or transmission control protocol (English: TransmissionControlProtocol, it is called for short: TCP, sends described control message to described first forwarding unit.
For example, the mode that the described network equipment sends described control message to described first forwarding unit can be any one mode following.
Mode one, the described network equipment, in point-to-point mode, sends described control message to described first forwarding unit. So, described first forwarding unit can obtain described control message, and the miscellaneous equipment in network does not receive the described control message that the described network equipment sends. .
Mode two, the described network equipment, in point-to-multipoint mode, is specified forwarding unit to send at least one and is controlled message, and at least one appointment forwarding unit described includes described first forwarding unit. So, at least one appointment forwarding unit described all can obtain described control message.
Mode three, the described network equipment broadcasts described control message to the forwarding unit in network, and described control message can be sent to described first forwarding unit in described network. So, except described first forwarding unit, other forwarding unit in described network also can obtain described control message. The mode adopting broadcast sends described control message, contributes to improving further the efficiency of synchronizing network state.
Based on the method that network state information is encoded to file format that the embodiment of the present invention provides, developing privately owned Routing Protocol can be: be arranged as required to the content of network state information. For example, identical AS is belonged to for described first forwarding unit and described second forwarding unit, described first forwarding unit and described second forwarding unit can support that identical privately owned Routing Protocol, described first forwarding unit and described second forwarding unit also can support different privately owned Routing Protocols. The embodiment of the present invention is that the attribute having to other forwarding unit described second forwarding unit of transmission in network for described second forwarding unit illustrates, any one forwarding unit in described network, such as the first forwarding unit, the method that the embodiment of the present invention all can be adopted to provide, synchronizes the attribute himself having.
If described second forwarding unit supports the 3rd privately owned Routing Protocol, then network state information can include properties: as described in the second forwarding unit identity, belong to as described in the second forwarding unit port mark with as described in the mark of link corresponding to the second forwarding unit. If described first forwarding unit supports the 3rd privately owned Routing Protocol, then network state information can include properties: as described in the first forwarding unit identity, belong to as described in the first forwarding unit port mark with as described in the mark of link corresponding to the first forwarding unit. For example, the mark of described link can be name and/or the link code of link.
If described second forwarding unit supports the 4th privately owned Routing Protocol, then network state information can include properties: as described in the second forwarding unit identity, belong to as described in the second forwarding unit port mark and as described in the duty of the second forwarding unit. If described first forwarding unit supports the 4th privately owned Routing Protocol, then network state information can include properties: as described in the first forwarding unit identity, belong to as described in the first forwarding unit port mark and as described in the duty of the first forwarding unit. For example, described duty can be start (English: up), close (English: down), overload (English: overload) and initialize (English: the one in init).
For example, based on the method for YANG data model speech encoding network state information, network state information can be tree, therefore, in the embodiment of the present invention, developing privately owned Routing Protocol can be: the layer being arranged as required between the attribute that network state information includes belongs to relation. For example, in the 4th privately owned Routing Protocol and the 5th privately owned Routing Protocol, network state information includes identical attribute. If described second forwarding unit supports the 4th privately owned Routing Protocol, layer between the attribute that then network state information includes belongs to relation and includes: the identity of described second forwarding unit is root node, belong to the mark of the port of described second forwarding unit and the duty of described second forwarding unit is leaf node, that is, the mark of described port and described duty can be located at same level in tree. If described 4th proprietary protocol of described second forwarding unit support is updated, namely described 5th privately owned Routing Protocol it is updated to, number of plies relation between the attribute that then network state information includes includes: the identification presentation of described second forwarding unit is root node, belong to the leaf node of the identification presentation being expressed as described second forwarding unit of the port of described second forwarding unit, the leaf node of the mark that duty is port of described second forwarding unit.
For example, if described first forwarding unit supports described 5th privately owned Routing Protocol, layer between the attribute that then network state information includes belongs to relation and includes: the identity of described first forwarding unit is root node, belong to the leaf node of the identity being designated described first forwarding unit of the port of described first forwarding unit, the leaf node of the mark that duty is port of described first forwarding unit, that is, the mark of described port is positioned at different level from described duty in tree.
For example, in the embodiment of the present invention, the layer between each attribute is set and belongs to the position that relation can include setting a property in tree; Or, arrange the layer between each attribute belong to relation can include create a new tree. For example, in the 3rd privately owned Routing Protocol and the 6th privately owned Routing Protocol, network state information includes identical attribute. In described 3rd privately owned Routing Protocol, layer between the attribute that network state information includes belongs to relation and includes: the identity of equipment is root node, belong to the port of described equipment the mark link corresponding with described equipment be designated leaf node, that is, the layer represented between each attribute by a tree belongs to relation. Described equipment is the equipment supporting described 3rd privately owned Routing Protocol.
In described 6th privately owned Routing Protocol, layer between the attribute that network state information includes belongs to relation: the identity of equipment is root node in the first tree, the mark belonging to the port of described equipment is leaf node in described first tree, the link identification that described equipment is corresponding is root node in the second tree, and the port-mark of the equipment of described both link ends is leaf node in described second tree. The equipment of described both link ends includes described equipment. Described 6th privately owned Routing Protocol is supported for described second forwarding unit, layer between the attribute that network state information includes belongs to relation: the identity of described second forwarding unit is root node in the first tree, the mark belonging to the port of described second forwarding unit is leaf node in described first tree, the link identification that described second forwarding unit is corresponding is root node in the second tree, and the port-mark of the equipment of described both link ends is leaf node in described second tree. The equipment of described both link ends includes described second forwarding unit.
Alternatively, multiple forwarding units belong under identical AS scene, the plurality of forwarding unit includes described first forwarding unit and described second forwarding unit, network state information may also include as properties: the speed of port is (English: speed), the observation speed of described port is (English: observed-speed), the maximum available bandwidth of link is (English: Max-Link-Bandwidth), the maximum residual bandwidth of described link is (English: Max-Resv-Link-BW), the weight of described link, the MTU of described link is (English: MaximumTransmissionUnit, it is called for short: MTU) etc., this can be not specifically limited by the embodiment of the present invention.
For YANG data model speech encoding network state information, for the 6th privately owned Routing Protocol, the network state information of a certain forwarding unit can be described as:
The identity of described forwarding unit can be described as:
The mark of the port belonging to described forwarding unit can be described as:
The mark of the link that described forwarding unit is corresponding can be described as:
Based on the embodiment of the present invention, network state information is encoded to the scheme of file format, when updating privately owned Routing Protocol, it is possible to update the attribute that network state information includes. For example, update the 6th privately owned Routing Protocol, the mark of link is updated to the leaf node of the mark of the first tree middle port, correspondingly revises the description for described link. For example, update the 6th privately owned Routing Protocol, increase new attribute, such as increase the ownership place of described forwarding unit, in tree, correspondingly increase a leaf node describing described ownership place. For example, the ownership place of described forwarding unit can be the leaf node of the identity of described forwarding unit, if the global positioning system that the ownership place of described forwarding unit is described forwarding unit is (English: GlobalPositioningSystem, be called for short: GPS) coordinate, then the ownership place of described forwarding unit can be described as:
In sum, network state information is encoded to file format by the embodiment of the present invention, also contributes to develop the motility of privately owned Routing Protocol.
Generally, carrier network has wide coverage, the feature such as multiple functional, the privately owned Routing Protocol of exploitation is the feature in order to adapt to described carrier network mostly, when this Routing Protocol meeting described carrier network feature is applied to data center network, a lot of functions of protocol realization are likely to not be that described data center network needs, and cause the waste of function. Additionally, in order to adapt to this Routing Protocol meeting described carrier network feature, data center network is also possible to introduce some unnecessary equipment, causes the waste of equipment, improve the complexity of data center network, in some instances it may even be possible to the reasonability of the forward-path that router-level topology goes out can be reduced. For this scene, enterprise network is (English: EnterpriseNetwork) client can adopt embodiment of the present invention scheme, exploitation meets the privately owned Routing Protocol of described data center network feature, helps avoid function waste and equipment waste, improves the reasonability of router-level topology.
The embodiment of the present invention additionally provides a kind of first forwarding unit, and described first forwarding unit can be located on the forwarding unit such as router or switch, and this can be not specifically limited by the embodiment of the present invention. Described first forwarding unit can perform the method that embodiment corresponding for Fig. 1 provides. Schematic diagram shown in Figure 3, described first forwarding unit comprises the steps that
Receiving unit 301, be used for receiving control message, described control message includes the network state information represented as a file format, and described network state information is for representing the attribute that the second forwarding unit has;
Obtain unit 302, for obtaining described network state information from the described control message of described reception unit reception.
Alternatively, described first forwarding unit may also include that
Updating block 303, for the described network state information utilizing described acquisition unit to obtain, updates the network state information storehouse that described first forwarding unit preserves.
Alternatively, described file format is XML format or JSON form.
Alternatively, described network state information adopts YANG language to describe, and described acquisition unit, specifically for utilizing network configuration Netconf agreement, resolves the described control message that described reception unit receives, it is thus achieved that described network state information.
Alternatively, described reception unit has the described control message for receiving self-controller; Or, described reception unit is specifically for receiving the described control message from described second forwarding unit.
The first forwarding unit that the embodiment of the present invention provides can support the analysis mode corresponding with the coded system of network state information, achieve that the network state obtaining different forwarding units, eliminate the process carrying out privately owned Routing Protocol negotiation between each forwarding unit, the success or failure of synchronizing network state are also no longer dependent on the result that Routing Protocol is consulted, and are favorably improved the efficiency of synchronizing network state.
The embodiment of the present invention additionally provides a kind of network equipment, and the described network equipment can be located on the equipment such as Controller, router or switch, and the described network equipment also can be located on the second forwarding unit. The concrete form of the network equipment is not specifically limited by the embodiment of the present invention. The described network equipment can perform the method that embodiment corresponding for Fig. 2 provides. Schematic diagram shown in Figure 4, the described network equipment comprises the steps that
First obtains unit 401, is used for obtaining network state information, and described network state information is for representing the attribute that the second forwarding unit has. For example, described first acquisition unit 401 can adopt the method in Fig. 2 correspondence embodiment, it is thus achieved that network state information, does not repeat them here. The attribute that the attribute that described second forwarding unit has has with the second forwarding unit described in the corresponding embodiment of Fig. 2 is identical, does not repeat them here.
Second obtains unit 402, and the described network state information obtained for obtaining unit by described first is encoded to file format, it is thus achieved that controlling message, described control message includes the described network state information represented with described file format. For example, described second acquisition unit 402 can adopt the method in Fig. 2 correspondence embodiment, it is thus achieved that controls message, does not repeat them here. Described control message is identical with the control message in the corresponding embodiment of Fig. 2, does not repeat them here.
Transmitting element 403, for sending described control message to the first forwarding unit. For example, described transmitting element can adopt the method in Fig. 2 correspondence embodiment, sends described control message to described first forwarding unit, does not repeat them here.
Alternatively, described file format is XML format or JSON form.
Alternatively, described second unit is obtained specifically for adopting another YANG language of future generation to describe described network state information.
Accordingly, the embodiment of the present invention additionally provides a kind of first forwarding unit, and described first forwarding unit can be located on the forwarding unit such as router or switch, and this can be not specifically limited by the embodiment of the present invention. Described first forwarding unit can perform the method that embodiment corresponding for Fig. 1 provides. Schematic diagram shown in Figure 5, described first forwarding unit comprises the steps that processor 501, memorizer 502 and communication interface 503. Wherein, processor 501, memorizer 502 and communication interface 503 can be connected by communication bus 504. Memorizer 502 is used for storing program, and the processor 501 executable instruction included by the program read from memorizer 502 performs concrete operations.
Alternatively, the unit 301 that receives in Fig. 3 can be realized by the communication interface 503 in Fig. 5, the executable instruction that unit 302 and updating block 303 can store according to memorizer 502 by the processor 501 in Fig. 5 that obtains in Fig. 3 realizes, and processor 501 can include at least one concurrent physical processor.
It should be noted that, the first forwarding unit shown in Fig. 3 and the first forwarding unit shown in Fig. 5 can be same equipment, it is believed that, Fig. 3 is the content that the angle from physics shows that first forwarding unit includes, and Fig. 5 is then the content that the angle from logic shows that first forwarding unit includes.
In first forwarding unit shown in Fig. 5, described processor 501, for reading the instruction and data of storage in memorizer 502, perform following operation:
Described processor 501 is received by described communication interface 503 and controls message, and described control message includes the network state information represented as a file format, and described network state information is for representing the attribute that the second forwarding unit has;
Described processor 501 obtains described network state information from described control message.
Alternatively, described processor 501 also utilizes described network state information, updates the network state information storehouse that described first forwarding unit preserves.
For example, described file format is XML format or JSON form.
Alternatively, described network state information adopts YANG language to describe, and described processor 501 obtains described network state information from described control message and includes:
Described processor 501 utilizes network configuration Netconf agreement, resolves described control message, it is thus achieved that described network state information.
Alternatively, described processor 501 is included by described communication interface 503 reception control message:
Described processor 501 receives the described control message of self-controller by described communication interface 503; Or,
Described processor 501 receives the described control message from described second forwarding unit by described communication interface 503.
The embodiment of the present invention additionally provides a kind of network equipment, and the described network equipment can be located on the equipment such as Controller, router or switch, and this can be not specifically limited by the embodiment of the present invention. The described network equipment can perform the method that embodiment corresponding for Fig. 2 provides. Schematic diagram shown in Figure 6, the described network equipment comprises the steps that processor 601, memorizer 602 and communication interface 603. Wherein, processor 601, memorizer 602 and communication interface 603 can be connected by communication bus 604. Memorizer 602 is used for storing program, and the processor 601 executable instruction included by the program read from memorizer 602 performs concrete operations.
Alternatively, in Fig. 4 first obtains unit 401 and transmitting element 403 can be realized by the communication interface 603 in Fig. 6, in Fig. 4 second obtains the executable instruction realization that unit 402 can be stored according to memorizer 602 by the processor 601 in Fig. 6, and processor 601 can include at least one concurrent physical processor.
It should be noted that, the network equipment shown in Fig. 4 and the network equipment shown in Fig. 6 can be same equipment, it is believed that Fig. 4 is the content that the angle from physics shows that a network equipment includes, Fig. 6 is then the content that the angle from logic shows that a network equipment includes.
In the network equipment shown in Fig. 6, described processor 601, for reading the instruction and data of storage in memorizer 602, perform following operation:
Described processor 601 obtains network state information by described communication interface 603, and described network state information is for representing the attribute that the second forwarding unit has;
Described network state information is encoded to file format by described processor 601, it is thus achieved that controlling message, described control message includes the described network state information represented with described file format;
Described processor 601 sends described control message by described communication interface 603 to the first forwarding unit.
For example, described file format is XML format or JSON form.
Alternatively, described network state information is encoded to file format and includes by described processor 601: described processor 601 adopts YANG language to describe described network state information.
Alternatively, the described network equipment is controller or described second forwarding unit.
As seen through the above description of the embodiments, those skilled in the art is it can be understood that can add the mode of general hardware platform by software to all or part of in above-described embodiment method and realize. Based on such understanding, the part that prior art is contributed by technical scheme substantially in other words can embody with the form of software product, this computer software product can be stored in storage medium, such as ROM/RAM, magnetic disc, CD etc., including some instructions with so that a computer equipment (can be personal computer, server, or the network communication equipment such as such as WMG) perform the method described in some part of each embodiment of the present invention or embodiment.
It should be noted that each embodiment in this specification all adopts the mode gone forward one by one to describe, between each embodiment identical similar part mutually referring to, what each embodiment stressed is the difference with other embodiments. Especially for equipment and system embodiment, owing to it is substantially similar to embodiment of the method, so describing fairly simple, relevant part illustrates referring to the part of embodiment of the method. Equipment described above and system embodiment are merely schematic, the unit wherein illustrated as separating component can be or may not be physically separate, the parts shown as unit can be or may not be physical location, namely may be located at a place, or can also be distributed on multiple NE. Some or all of module therein can be selected according to the actual needs to realize the purpose of the present embodiment scheme. Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.
The above is only the optional embodiment of the present invention, is not intended to limit protection scope of the present invention. It should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (15)
1. the method for synchronizing network state, it is characterised in that described method includes:
First forwarding unit receives and controls message, and described control message includes the network state information represented as a file format, and described network state information is for representing the attribute that the second forwarding unit has;
Described first forwarding unit obtains described network state information from described control message.
2. method according to claim 1, it is characterised in that described method also includes:
Described first forwarding unit utilizes described network state information, updates the network state information storehouse that described first forwarding unit preserves.
3. method according to claim 1 and 2, it is characterised in that described file format is expandable mark language XML form or Java scripting object markup language JSON form.
4. the method according to any one of claims 1 to 3, it is characterised in that described network state information adopts another YANG language of future generation to describe, and described first forwarding unit obtains described network state information from described control message and includes:
Described first forwarding unit utilizes network configuration Netconf agreement, resolves described control message, it is thus achieved that described network state information.
5. the method according to any one of Claims 1-4, it is characterised in that described first forwarding unit receives control message and includes:
Described first forwarding unit receives the described control message of self-controller, or described first forwarding unit receives the described control message from described second forwarding unit.
6. the method for synchronizing network state, it is characterised in that described method includes:
The network equipment obtains network state information, and described network state information is for representing the attribute that the second forwarding unit has;
Described network state information is encoded to file format by the described network equipment, it is thus achieved that controlling message, described control message includes the described network state information represented with described file format;
The described network equipment sends described control message to the first forwarding unit.
7. method according to claim 6, it is characterised in that described file format is expandable mark language XML form or Java scripting object markup language JSON form.
8. the method according to claim 6 or 7, it is characterised in that described network state information is encoded to file format and includes by the described network equipment:
The described network equipment adopts another YANG language of future generation to describe described network state information.
9. the method according to any one of claim 6 to 8, it is characterised in that the described network equipment is controller or described second forwarding unit.
10. a forwarding unit, it is characterised in that described first forwarding unit includes:
Receiving unit, be used for receiving control message, described control message includes the network state information represented as a file format, and described network state information is for representing the attribute that the second forwarding unit has;
Obtain unit, for obtaining described network state information from the described control message of described reception unit reception.
11. the first forwarding unit according to claim 10, it is characterised in that described first forwarding unit also includes:
Updating block, for the described network state information utilizing described acquisition unit to obtain, updates the network state information storehouse that described first forwarding unit preserves.
12. the first forwarding unit according to claim 10 or 11, it is characterised in that described network state information adopts another YANG language of future generation to describe,
Described acquisition unit, specifically for utilizing network configuration Netconf agreement, resolves the described control message that described reception unit receives, it is thus achieved that described network state information.
13. according to arbitrary the first described forwarding unit of claim 10 to 12, it is characterised in that
Described reception unit is specifically for receiving the described control message of self-controller, or described reception unit is specifically for receiving the described control message from described second forwarding unit.
14. a network equipment, it is characterised in that the described network equipment includes:
First obtains unit, is used for obtaining network state information, and described network state information is for representing the attribute that the second forwarding unit has;
Second obtains unit, and the described network state information obtained for obtaining unit by described first is encoded to file format, it is thus achieved that controlling message, described control message includes the described network state information represented with described file format;
Transmitting element, for sending described control message to the first forwarding unit.
15. the network equipment according to claim 13 or 14, it is characterised in that
Described second obtains unit specifically for adopting another YANG language of future generation to describe described network state information.
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| CN201410623562.1A CN105635223A (en) | 2014-11-06 | 2014-11-06 | Method and device of synchronizing network state |
| PCT/CN2015/088980 WO2016070679A1 (en) | 2014-11-06 | 2015-09-06 | Network state synchronizing method and apparatus |
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| CN201410623562.1A CN105635223A (en) | 2014-11-06 | 2014-11-06 | Method and device of synchronizing network state |
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