CN107294859A - A kind of information transmitting methods, apparatus and system - Google Patents
A kind of information transmitting methods, apparatus and system Download PDFInfo
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- CN107294859A CN107294859A CN201610227405.8A CN201610227405A CN107294859A CN 107294859 A CN107294859 A CN 107294859A CN 201610227405 A CN201610227405 A CN 201610227405A CN 107294859 A CN107294859 A CN 107294859A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/16—Multipoint routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/20—Support for services
- H04L49/201—Multicast operation; Broadcast operation
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Abstract
Disclosed herein is a kind of information transmitting methods, apparatus and system, the above method includes：For predetermined amount of flow allocation identification information, and the information corresponding to the identification information is determined, wherein, the packet corresponding to the identification information includes the information that mouthful node set and/or link set are constituted；Information corresponding to the identification information and the identification information is sent to one or more network nodes.The above method can improve forwarded efficiency, so as to promote the development of multicasting technology and network.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of information transmitting methods, apparatus and system.
Background technology
Multicast data communication plays more and more important effect, interactive network electricity in present internet
It is straight depending on (IPTV, Interactive Personality TV), Web conference (Net-Meeting), game situation
Broadcast etc. and all to have used multicasting technology.Existing multicasting technology includes：Protocol Independent Multicast (PIM,
Protocol Independent Multicast), IGMP (IGMP, Internet Group
Management Protocol), multicast listener discovery protocol (MLD, Multicast Listener Discovery
Protocol) etc..Under initial compact applications scene, these existing agreements can meet user's
Demand, but as multicast application is more and more extensive, network construction form becomes increasingly complex, and multicast is directly applied to
In internet, often because the multicast state in backbone network is excessive, a large amount of of intermediate node are taken
Resource and Signalling exchange are controlled, and present wide variety of VPN can not be supported well
(VPN, Virtual Private Network) technology develops.Thus present developing direction, it is intended to
Traditional multicast protocol is not run in backbone network, but relies on other technologies to complete flux of multicast
Transmission.Can solve the problem that the correlation technique of these problems has：Multicast label distribution protocol (mLDP, Multicast
Label Distribution Protocol) technology, point-to-multipoint traffic engineering (P2MP TE,
Point-to-MultiPoint Traffic Engineering) technology, based on position index displaying duplication (BIER,
Bit Indexed Explicit Replication) technology etc..
The core concept of BIER technologies is：Node in network is all only represented with a position (BIT),
Flux of multicast is transmitted in go-between, is wrapped with multicast network agreement (IP, Internet Protocol)
Form is presented, but one specific BIER (header) of encapsulation, and this heading is with BIT's
Form is labelled with all purposes node of the multicast data flow, and go-between is route according to BIT, ensures stream
Amount can be sent to all purposes node.
The forwarding of multicast is carried out using BIER technologies, the multicast state of nodes, net is eliminated
The forwarding of network, which according only to BIER bit strings can forward, just can reach corresponding destination node, simplify
Network-based control.BIER bit strings information can be the Egress node BIT set of particular flow rate, can also
It is that flow needs the BIT of the intermediate line link passed through to gather.The node for participating in forwarding is required for according to BIER
Bit string carries out matching by turn and forwarded.Because bit string mark is only in a BIER subdomain, collection mark
Know and bit string length in effectively, therefore BIER optimization be adapted to multiprotocol label switching (MPLS,
Multi-Protocol Label Switching) technology, specific BIER can be represented by label
Domain, set identifier and bit string length.
Fig. 1 is the schematic diagram of BIER messages forwarding in correlation technique.Assuming that a BIER network, certain
The forwarding bit string length of individual subdomain (such as subdomain 1) is 256, identifies 256 nodes, then each number
According to message when entering Ingress node, after encapsulation sub-domain information, set identifier and bit string length, in addition it is also necessary to root
The purpose Egress node aggregate information for needing to reach according to bit string length and the data message, is packaged into 256
The bit string of position.Forward node (including Ingress node) is required for root for each data message
Matching and bit string change operation by turn are carried out according to the bit strings of 256, the forwarding for going to next-hop is realized.Such as
This, the network structure of complication, the data message of substantial amounts and forward node are for each data
The bit string that message is carried out match by turn with bit string change operation, can all greatly reduce the place of forward node
Manage efficiency.
Fig. 2 is the schematic diagram of BIER label packets forwarding in correlation technique.Fig. 2 show introducing label
The BIER networks of forwarding, but label 200 here, be used merely to refer to some BIER subdomain, certain
Individual set identifier and some bit string length information, such as subdomain 0, set identifier 1 and bit string length 256.Often
One data message in addition to encapsulating bit string, will also encapsulate next-hop node institute when entering Ingress node
The label corresponding to subdomain, set identifier and bit string length needed.Forward node after data message is received,
The information referred to according to label, is directly targeted to the forwarding corresponding to subdomain, set identifier and bit string length
List item, then carries out matching and bit string change operation by turn, and encapsulate next to data message bit string again
The label information corresponding to subdomain, set identifier and bit string length required for hop node, is sent to next-hop
Node.Next-hop node repeats the operation until being forwarded to Egress node, and BIER is released by Egress node
Forwarded after head encapsulation.
Although it can thus be seen that having carried out the optimization of MPLS technology, this optimization is used merely to mark
Specific label and the corresponding relation of BIER subdomains, set identifier and bit string length, participate in the node of forwarding still
So need that the BIER bit strings in heading are carried out to match by turn to realize the forwarding of next-hop.Multiple
Miscellaneous network or bit string digit are excessive or in the case that data message is numerous, or processor performance
Limitation under, the BIER bit strings in each data message head will be matched by turn, forward node
Treatment effeciency can be by extreme influence, so that can traffic affecting network transmission efficiency.
The content of the invention
The following is the general introduction of the theme to being described in detail herein.This general introduction is not to limit claim
Protection domain.
The embodiment of the present invention provides a kind of information transmitting methods, apparatus and system, can improve forwarded
Efficiency, so as to promote the development of multicasting technology and network.
The embodiment of the present invention provides a kind of information transmitting methods, including：
For predetermined amount of flow allocation identification information, and the information corresponding to the identification information is determined, wherein,
Packet corresponding to the identification information includes the letter that mouthful node set and/or link set are constituted
Breath；
Information corresponding to the identification information and the identification information is sent to one or more networks
Node.
Alternatively, the information that the Egress node set and/or link set are constituted is：Mark outlet
The bit string set of node and/or link；Or, Egress node information is enumerated, wherein, the outlet
Nodal information includes position forwarding unit identifier (BFR-id) or position forwarding unit prefix
(BFR-Prefix)。
Alternatively, the identification information is the set that single or multiple labels are constituted, or can for other
Represent the mark of flow.
Alternatively, the information corresponding to the identification information also includes following information：Subdomain, bit string length
And collection mark.
Alternatively, it is described to be predetermined amount of flow allocation identification information and determine the letter corresponding to the identification information
Breath is completed by network entry point or completed by controller.
Alternatively, the identification information is to give the distribution of any bar predetermined amount of flow；Or, the mark letter
Breath is to give any sort assignment of traffic.
Alternatively, the link set is traffic engineering (TE) link paths set or other forms
Link set.
Alternatively, the information by corresponding to the identification information and the identification information is sent to one
Or multiple network nodes, including：
Extended by network entry point by Interior Gateway Protocol (IGP) or Border Gateway Protocol (BGP)
Information announcement corresponding to the identification information and the identification information is given other network nodes by extension；Or
Person,
Information as corresponding to controller by the identification information and the identification information is issued to each net
Network node；Or,
Information as corresponding to controller by the identification information and the identification information is handed down to any one
Network node, extended by the network node by IGP or BGP extensions by the identification information and
Information announcement corresponding to the identification information gives other network nodes.
Alternatively, the IGP extensions include：Ospf (OSPF) protocol extension
Or Intermediate System-to-Intermediate System (ISIS) protocol extension.
Alternatively, the information hair as corresponding to controller by the identification information and the identification information
Giving any one network node or each network node includes：Border Gateway Protocol is passed through by the controller
Link State (BGP-LS) signaling extensions or network configuration protocol (NETCONF) are by the mark
Information corresponding to information and the identification information is sent to any one network node or each network node.
Alternatively, described information transmission method is applied to be based on position index displaying duplication (BIER) network.
The embodiment of the present invention also provides a kind of information transmitting methods, including：
Information of the network node according to corresponding to the identification information, the identification information that are distributed for predetermined amount of flow
And the network topology situation of present networks node, forwarding-table item corresponding to the identification information is generated, wherein,
Packet corresponding to the identification information includes the letter that mouthful node set and/or link set are constituted
Breath；
The network node is when receiving the flow for carrying the identification information, according to the identification information
Corresponding forwarding-table item, forwards the flow.
Alternatively, when the network node is network entry point, methods described also includes：Predetermined
When flow enters network, the network entry point encapsulates the identification information distributed to the predetermined amount of flow
To the predetermined amount of flow.
Alternatively, methods described also includes：The network node receives the mark letter that controller is issued
Information corresponding to breath and the identification information；Or, the network node receive extended by IGP or
Information corresponding to the identification information and the identification information of person BGP extension notices.
Alternatively, described information transmission method is applied to BIER networks.
The embodiment of the present invention also provides a kind of information transfer device, including：
First processing module, for for predetermined amount of flow allocation identification information, and determines the identification information institute
Corresponding information, wherein, the packet corresponding to the identification information includes mouthful node set and/or chain
Gather constituted information in road；
Sending module, for the information corresponding to the identification information and the identification information to be sent into one
Individual or multiple network nodes.
Alternatively, the information that the Egress node set and/or link set are constituted is：Mark outlet
The bit string set of node and/or link；Or, Egress node information is enumerated, wherein, the outlet
Nodal information includes BFR-id or BFR-Prefix.
Alternatively, when described information transfer device is arranged at network node, described device also includes：The
One receiving module, is the identification information of predetermined amount of flow distribution and the mark of determination for receiving controller
Know the information corresponding to information.
Alternatively, when described information transfer device is arranged at network node, the sending module, specifically
For：By IGP extensions or BGP extensions by corresponding to the identification information and the identification information
Information announcement give other network nodes.
Alternatively, when described information transfer device is arranged at controller, the sending module is specific to use
In：By BGP-LS signaling extensions or NETCONF by the identification information and the identification information
Corresponding information is sent to one or more network nodes.
The embodiment of the present invention also provides a kind of information transfer device, is arranged at network node, including：
Second processing module, for according to the identification information, identification information institute distributed for predetermined amount of flow
The network topology situation of corresponding information and place network node, generates turn corresponding to the identification information
Forwarding list item, wherein, the packet corresponding to the identification information includes mouthful node set and/or link set
Close constituted information；
Forwarding module, for when receiving the flow for carrying the identification information, being believed according to the mark
Corresponding forwarding-table item is ceased, the flow is forwarded.
Alternatively, when the network node is network entry point, described device also includes：Encapsulation Moulds
Block, for predetermined amount of flow enter network when, by the identification information distributed to the predetermined amount of flow encapsulate to
The predetermined amount of flow.
Alternatively, described device also includes：Second receiving module, for receiving described in controller issues
Information corresponding to identification information and the identification information；Or, receive by IGP extensions or BGP
Extend the information corresponding to the identification information and the identification information of notice.
The embodiment of the present invention also provides a kind of information transfer system, including：
Controller and one or more network nodes；
The controller, for for predetermined amount of flow allocation identification information, determining corresponding to the identification information
Information, and the information corresponding to the identification information and the identification information is sent to one or more
Network node, wherein, the packet corresponding to the identification information includes mouthful node set and/or link
The constituted information of set；
The network node for receiving the identification information and the information corresponding to the identification information, is used
Opened up in the information and the network of present networks node according to corresponding to the identification information, the identification information
Situation is flutterred, forwarding-table item corresponding to the identification information is generated, and the identification information is carried receiving
Flow when, according to forwarding-table item corresponding to the identification information, forward the flow.
Alternatively, when the controller sends out the information corresponding to the identification information and the identification information
It is described to receive the identification information and the letter corresponding to the identification information when giving a network node
The network node of breath, is additionally operable to the identification information and described by IGP extensions or BGP extensions
Information announcement corresponding to identification information gives other network nodes.
The embodiment of the present invention also provides a kind of computer-readable recording medium, and the computer that is stored with is executable to be referred to
Order, the computer executable instructions realize the letter described in any one of claim 1 to 11 when being performed
Cease transmission method.
The embodiment of the present invention also provides a kind of computer-readable recording medium, and the computer that is stored with is executable to be referred to
Order, the computer executable instructions realize the letter described in any one of claim 12 to 15 when being performed
Cease transmission method.
In embodiments of the present invention, it is predetermined amount of flow allocation identification information, determines that the identification information institute is right
The information answered, and the identification information and its corresponding information are sent to one or more network sections
Point, wherein, the packet corresponding to the identification information includes mouthful node set and/or link set institute
The information of composition, so so that network node can generate forwarding-table item corresponding to the identification information,
And the flow for carrying the identification information is forwarded according to the forwarding-table item.There is provided by the embodiment of the present invention
Technical scheme, forwarded efficiency can be improved, so as to promote the development of multicasting technology and network.It is logical
Cross scheme provided in an embodiment of the present invention, it is possible to achieve the information transmission based on BIER technologies, directly build
The mark forwarding channel of vertical BIER networks, makes BIER forward node directly be turned according to identification information
Hair, drastically increases the forward efficiency of BIER networks, the development to multicasting technology and network all has
Good facilitation.
After reading and understanding accompanying drawing and being described in detail, it can be appreciated that other aspects.
Brief description of the drawings
Fig. 1 is the schematic diagram of BIER messages forwarding in correlation technique；
Fig. 2 is the schematic diagram of BIER label packets forwarding in correlation technique；
Fig. 3 is the flow chart of information transmitting methods provided in an embodiment of the present invention；
Fig. 4 is another flow chart of information transmitting methods provided in an embodiment of the present invention；
Fig. 5 is the flow chart for the information transmitting methods that the embodiment of the present invention one is provided；
Fig. 6 is another flow chart for the information transmitting methods that the embodiment of the present invention one is provided；
Fig. 7 is the implementation schematic diagram for the information transmitting methods that the embodiment of the present invention two is provided；
Fig. 8 is the implementation schematic diagram for the information transmitting methods that the embodiment of the present invention three is provided；
Fig. 9 is the implementation schematic diagram for the information transmitting methods that the embodiment of the present invention four is provided；
Figure 10 is the implementation schematic diagram for the information transmitting methods that the embodiment of the present invention five is provided；
Figure 11 is the implementation schematic diagram for the information transmitting methods that the embodiment of the present invention six is provided；
Figure 12 is the implementation schematic diagram for the information transmitting methods that the embodiment of the present invention seven is provided；
Figure 13 is the schematic diagram of information transfer device provided in an embodiment of the present invention；
Figure 14 is another schematic diagram of information transfer device provided in an embodiment of the present invention；
Figure 15 is the schematic diagram of the information transfer system provided in an embodiment of the present invention.
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing, it will be appreciated that described below
Embodiment is merely to illustrate and explained the application, is not used to limit the application.It should be noted that
In the case of not conflicting, the feature in embodiment and embodiment in the application can be mutually combined.
The step of the flow of accompanying drawing is illustrated can such as one group computer executable instructions calculating
Performed in machine system.And, although logical order is shown in flow charts, but in some cases,
Can be with the step shown or described by being performed different from order herein.
Fig. 3 is the flow chart of information transmitting methods provided in an embodiment of the present invention.As shown in figure 3, this reality
The information transmitting methods of example offer are provided, comprised the following steps：
Step 301：For predetermined amount of flow allocation identification information, and determine the letter corresponding to the identification information
Breath, wherein, the packet corresponding to the identification information includes mouthful node set and/or link set institute
The information of composition；
Step 302：By the information corresponding to the identification information and the identification information be sent to one or
Multiple network nodes.
In the present embodiment, above- mentioned information transmission method is applied to BIER networks.
Wherein, the information that the Egress node set and/or link set are constituted is：Mark outlet section
Bit string (BitString) set of point and/or link；Or, Egress node information is enumerated, wherein,
The Egress node information includes position forwarding unit identifier (BFR-id, Bit-Forwarding Router
) or position forwarding unit prefix (BFR-Prefix, Bit-Forwarding Router prefix) identifier.
Wherein, the identification information is the set that single or multiple labels are constituted, or being capable of table for other
Show the mark of flow.For example, the identification information is network entry point label and predetermined amount of flow label
Combination, or, the identification information is single label, and the single label can indicate Web portal section
Point and predetermined amount of flow.
Wherein, the information corresponding to the identification information also includes following information：Subdomain (Sub-domain),
Bit string length (Bitstring length) and collection mark (Set Identifier).
Wherein, it is described to be predetermined amount of flow allocation identification information and determine the information corresponding to the identification information
Completed by network entry point or completed by controller.For example, network entry point is predetermined amount of flow point
With identification information, and form the identification information and Egress node set and/or link set constitutes information
Mapping relations；Or, controller be predetermined amount of flow allocation identification information, and formed the identification information with
Egress node set and/or link set constitute the mapping relations of information.
Wherein, the identification information is to give the distribution of any bar predetermined amount of flow；Or, the identification information
It is to give any sort assignment of traffic.I.e., it is possible to be a certain bar predetermined amount of flow allocation identification information, can also
For a certain class assignment of traffic identification information.
Wherein, the link set is traffic engineering (TE, Traffic Engineering) link paths collection
Conjunction or the link set of other forms.
Alternatively, step 302 includes：
Expanded by network entry point by Interior Gateway Protocol (IGP, Interior Gateway Protocol)
Exhibition or Border Gateway Protocol (BGP, Border Gateway Protocol) are extended the identification information
And the information announcement corresponding to the identification information gives other network nodes；Or,
Information as corresponding to controller by the identification information and the identification information is issued to each net
Network node；Or,
Information as corresponding to controller by the identification information and the identification information is handed down to any one
Network node, extended by the network node by IGP or BGP extensions by the identification information and
Information announcement corresponding to the identification information gives other network nodes.
Wherein, the IGP extensions include：Ospf (OSPF, Open Shortest
Path First) protocol extension or Intermediate System-to-Intermediate System (ISIS, Intermediate System to
Intermediate System) protocol extension.
Wherein, the information as corresponding to controller by the identification information and the identification information is sent
Include to any one network node or each network node：Border Gateway Protocol chain is passed through by the controller
Line state (BGP-LS, BGP-Link State) signaling extensions or network configuration protocol (NETCONF,
Network Configuration Protocol) by the letter corresponding to the identification information and the identification information
Breath is sent to any one network node or each network node.
Fig. 4 is another flow chart of information transmitting methods provided in an embodiment of the present invention.As shown in figure 4,
The information transmitting methods that the present embodiment is provided, comprise the following steps：
Step 401：Network node is according to the identification information, identification information institute distributed for predetermined amount of flow
The network topology situation of corresponding information and present networks node, generates forwarding corresponding to the identification information
List item；
Step 402：The network node is when receiving the flow for carrying the identification information, according to institute
Forwarding-table item corresponding to identification information is stated, the flow is forwarded.
Wherein, the packet corresponding to the identification information includes mouthful node set and/or link set institute
The information of composition.
In the present embodiment, above- mentioned information transmission method is applied to BIER networks.
Wherein, when the network node is network entry point, methods described also includes：In pre- constant current
Amount enter network when, the network entry point by the identification information distributed to the predetermined amount of flow encapsulate to
The predetermined amount of flow.
Before step 401, methods described also includes：The network node receives the institute that controller is issued
State identification information and the information corresponding to the identification information；Or, the network node, which is received, to be passed through
The information corresponding to the identification information and the identification information that IGP is extended or BGP extensions are noticed.
Pass through method provided in an embodiment of the present invention, it is possible to achieve the information transmission based on BIER technologies,
The mark forwarding channel of BIER networks is directly set up, makes BIER forward node directly according to identification information
Forwarded, drastically increase the forward efficiency of BIER networks, the development to multicasting technology and network
All there is good facilitation.
Illustrated below by way of specific embodiment.
Embodiment one
Fig. 5 is the flow for the information transmitting methods based on BIER technologies that the embodiment of the present invention one is provided
Figure.According to Fig. 5 flow can by the control information of predetermined amount of flow (including identification information and its institute it is right
The information answered) transmitted between BIER forward node, play the generation of BIER forward node and mark
Know the purpose of the corresponding forward-path of information.
As shown in figure 5, the method that the present embodiment is provided comprises the following steps：
Step 501：BIER network entry points are judged according to the situation of flow, to need mark
The corresponding identification information of assignment of traffic of identification path is signed, and maps corresponding Egress node set or chain
Road aggregate information；In this, according to the corresponding Egress node set of predetermined amount of flow, or the TE chains walked are wanted
Road set of paths, generates corresponding bit string information.
Wherein, identification information can add the label institute of predetermined amount of flow for the label of mark network entry point
Can being used for of the tag set of composition or other forms identifies network entry point and predetermined
The mark of flow.
Wherein, it can be certain specific data traffic or foundation to be identified representated by information
The a certain class data flow duration set that some principles are divided.
In this, BIER network entry points directly generate identification information.However, the application is not limited
In this.In other embodiment, identification information can be generated by controller, and by the identification information of generation
It is issued to BIER network entry points.In addition, Egress node aggregate information or link set information,
Or the corresponding bit string information generated according to Egress node aggregate information and/or link set information,
It can be issued by controller.Alternatively, under controller during photos and sending messages, BGP-LS can be passed through
Related expanding is issued, and can also be issued by modes such as NETCONF.
Step 502：BIER network entry points by identification information, corresponding Egress node set or
Link set information, and related subdomain, set identifier, bit string length information, by IGP or
BGP extends, and is communicated to other network nodes.
Wherein, IGP notice, can be carried out by the extension of ospf protocol or ISIS agreements.
Step 503：BIER network entry points are carried out to data message after routine BIER encapsulation,
The identification information corresponding to the flow is encapsulated, next-hop node is then forwarded to.
Fig. 6 is another stream for the information transmitting methods based on BIER technologies that the embodiment of the present invention one is provided
Cheng Tu., can be according to the control information of the predetermined amount of flow received, generation mark by flow shown in Fig. 6
The corresponding path forwarding-table item of information.
Step 601：BIER network nodes according to the identification information received, corresponding Egress node or
Egress node set or link set included in link set information, or bit string information, with reference to
Local topology carries out matching treatment, under drawing corresponding to the predetermined amount of flow for forwarding identification information mark
One hop-information, is formed directly according to the forwarding-table item of identification information.
Step 602：BIER network nodes are according to forwarding-table item corresponding to the identification information of formation, to receiving
To the data message of the carrying identification information directly carry out going to the forwarding of next-hop.
Wherein, BIER network exit nodes are formed according to mark after protocol extension information announcement is received
Information is decapsulated, and transfers the forwarding-table item of BIER networks.
Embodiment two
Fig. 7 is that the implementation for the information transmitting methods based on BIER technologies that the embodiment of the present invention two is provided is shown
It is intended to.In the present embodiment, by the flow of a certain bar predetermined amount of flow, or a certain class, tag set is used
Form be identified, by the Egress node set reached required for predetermined amount of flow, be converted into bit string letter
Breath, and the information such as these information and subdomain, set identifier and bit string length are entered by modes such as protocol extensions
Row notice.Each BIER network nodes form forwarding-table item according to identification information (tag set).When
When data message is forwarded, the forwarding-table item directly formed by tag set is forwarded to next-hop section
Point.The label such as distributed here by the label 200 corresponding to Ingress node 1 and to predetermined amount of flow
50 gather as identification information (that is, two layers of label of correspondence).Each network node be based on this two
Layer label directly forwards predetermined amount of flow to next-hop.
Wherein, the extension of protocol signaling includes IGP extensions (including OSPF and ISIS protocol extensions)
Or BGP extensions.
Wherein, bit string information can be a paths planned in advance, the link position institute on the path
The link bit string information of composition.
Wherein, identification information and corresponding bit string information, can be managed and be generated by Ingress node, or
Generated by controller.
Wherein, by controller generate identification information and corresponding Egress node set or link set (or
Person's bit string information, the bit string information is generated according to Egress node set and/or link set information),
Above- mentioned information can be directly handed down to each network node by controller, can also only be handed down to entrance section
Point.
Alternatively, controller by identification information and corresponding Egress node set or link set (or
The bit string information generated according to Egress node set and/or link set information), Ingress node is handed down to,
Noticed again by Ingress node by the extension of IGP and BGP protocol signaling.
Alternatively, controller is directly issued by modes such as BGP-LS signaling extensions or NETCONF
Identification information and corresponding Egress node set or link set (or according to Egress node set and/
Or the bit string information of link set information generation) give each network node or Ingress node.
Embodiment three
Fig. 8 is that the implementation for the information transmitting methods based on BIER technologies that the embodiment of the present invention three is provided is shown
It is intended to.In the present embodiment, to the flow of predetermined amount of flow, or a certain class, carried out with special method
Mark, such as here by the flow identifier of a certain class be ABCDEFG, identification information is noticed by signaling
With corresponding Egress node set or link set (or according to Egress node set and/or link set
Close the bit string information of information generation), or controller issues identification information and corresponding Egress node set
Or link set (or the bit string information generated according to Egress node set and/or link set information)
Afterwards, forward node forms corresponding forwarding-table item, and forward node can be directly according to identification information correspondence
Forwarding-table item by carry the identification information flow be forwarded to next-hop.
Example IV
Fig. 9 is that the implementation for the information transmitting methods based on BIER technologies that the embodiment of the present invention four is provided is shown
It is intended to.The present embodiment is as a certain bar or a certain class predetermined amount of flow, it is necessary to be transmitted by given link
Implement example.Such as a certain class flow, it is necessary to through specifying link 1,2,3,4,5,6,7,
8th, 9,10 required Egress node is reached, is the identification information that this class flow is distributed, and
The bit string information that corresponding link information is constituted, and related subdomain, set identifier and bit string length etc.
Information, can be noticed by BGP extensions, so that each network node is believed according to those
Breath and local topology situation, the forwarding-table item corresponding to generation identification information.
Wherein, identification information can be combination or the other forms of individual layer or multilayer labels
Special identifier.
Wherein, except extending advertised information by BGP, it can also be expanded by OSPF and ISIS agreements
Exhibition is noticed.
Embodiment five
Figure 10 is the implementation for the information transmitting methods based on BIER technologies that the embodiment of the present invention five is provided
Schematic diagram.In the present embodiment, with type-length-value (TLV, Type, Length, Value)
Extended mode transmits identification information (such as label 1 and label 2) and corresponding bit string (BitString)
Information.The TLV can be as SUB-TLV mode by ospf protocol, ISIS agreements or BGP
Carry and notice.Specific form in specific implementation process, can also be adopted here as just reference
With the form for once noticing multiple identification informations and its corresponding bit string information, specific form can be flexibly more
Become.The present embodiment is not limited this.
Wherein, Egress node set and link set, can be made a distinction with different type identifications,
A tag field can also be increased newly in same type TLV to distinguish two ways.
Wherein, it is also possible to the set of identical Egress node or the multiple identification informations of link set correspondence, can
To notice the same Egress node set of multiple identification informations correspondence or link set (or bit string simultaneously
Information).
Wherein, when network condition changes, the Egress node corresponding to the stream of a certain bar or a certain class
Set or link set be when there occurs change, by new Egress node or link set (or correspondingly
Bit string information), update TLV simultaneously noticed, again may be by ospf protocol, ISIS association
Negotiation BGP is carried and noticed, and the node received is carried out in processing according to the topology situation of this node
Next-hop in processing, increase or reduction forwarding-table item corresponding to the identification information.
Wherein, when some identification information needs to be deleted, type TLV can be newly defined, or in original
Increase identification information in type TLV and show that this identification information needs to be deleted.It is logical by protocol signaling
After announcement, the local existing forwarding-table item formed according to identification information of each knot removal.
Embodiment six
Figure 11 shows for the implementation that the present invention implements six information transmitting methods based on BIER technologies provided
It is intended to., can be with single layer label (such as label x) when network controlling is stronger in the present embodiment
Come the differentiation flowed, it is issued to by same TLV forms on node, forward table is completed by node
Formation.In this way, follow-up when having the stream of this layer of label by node, directly basis is previously formed
Forward table complete forwarding, the matching operation without carrying out bit string.
Embodiment seven
Figure 12 is the implementation for the information transmitting methods based on BIER technologies that the embodiment of the present invention seven is provided
Schematic diagram.In the present embodiment, information of the controller in network issues identification information and its correspondingly
Egress node or link set information such as (or) bit strings on Ingress node, or some specified
On node, extended by this node by ospf protocol, ISIS agreements or BGP, mark is believed
Breath and its corresponding information announcement are to other nodes in network.Then, each node is according to the letter received
Forwarding-table item corresponding to breath and local topology situation formation identification information, is being received with mark letter
Direct forwarding data packets are to next-hop node during the data message of breath, without carry out bit string lookup and
With operation.
Above-mentioned multiple embodiments can be implemented with single, can also independent assortment implementation.Pass through above-mentioned multiple realities
Apply example and understand that scheme provided in an embodiment of the present invention realizes the information transmission based on BIER technologies, section
Point can be according to forwarding-table item corresponding to the identification information pre-established, and direct forwarding data packets are to next
Hop node, the matching operation without carrying out bit string.In this way, drastically increasing the biography of BIER networks
Defeated efficiency, has good facilitation to the development of network.
In addition, as shown in figure 13, the embodiment of the present invention also provides a kind of information transfer device, including：
First processing module, for for predetermined amount of flow allocation identification information, and determines the identification information institute
Corresponding information, wherein, the packet corresponding to the identification information includes mouthful node set and/or chain
Gather constituted information in road；
Sending module, for the information corresponding to the identification information and the identification information to be sent into one
Individual or multiple network nodes.
Wherein, the information that the Egress node set and/or link set are constituted is：Mark outlet section
The bit string set of point and/or link；Or, Egress node information is enumerated, wherein, the outlet section
Point information includes position forwarding unit identifier (BFR-id) or position forwarding unit prefix (BFR-Prefix).
Alternatively, as shown in figure 13, it is described when described information transfer device is arranged at network node
Device also includes：First receiving module, for receive controller for predetermined amount of flow distribute identification information with
And the information corresponding to the identification information determined.
Alternatively, when described information transfer device is arranged at network node, the sending module, specifically
For：By IGP extensions or BGP extensions by corresponding to the identification information and the identification information
Information announcement give other network nodes.
Alternatively, when described information transfer device is arranged at controller, the sending module is specific to use
In：By BGP-LS signaling extensions or NETCONF by the identification information and the identification information
Corresponding information is sent to one or more network nodes.
As shown in figure 14, the embodiment of the present invention also provides a kind of information transfer device, is arranged at network section
Point, including：
Second processing module, for according to the identification information, identification information institute distributed for predetermined amount of flow
The network topology situation of corresponding information and place network node, generates turn corresponding to the identification information
Forwarding list item, wherein, the packet corresponding to the identification information includes mouthful node set and/or link set
Close constituted information；
Forwarding module, for when receiving the flow for carrying the identification information, being believed according to the mark
Corresponding forwarding-table item is ceased, the flow is forwarded.
Alternatively, when the network node is network entry point, described device also includes：Encapsulation Moulds
Block, for predetermined amount of flow enter network when, by the identification information distributed to the predetermined amount of flow encapsulate to
The predetermined amount of flow.
Alternatively, described device also includes：Second receiving module, for receiving described in controller issues
Information corresponding to identification information and the identification information；Or, receive by IGP extensions or BGP
Extend the information corresponding to the identification information and the identification information of notice.
In practical application, above-mentioned first processing module, Second processing module, package module are, for example, place
Managing device etc. has the element of information processing capability, and above-mentioned sending module, forwarding module are, for example, transmitter etc.
Communication device with information emissivities, above-mentioned first receiving module, the second receiving module are, for example, to connect
Receiving device etc. has the communication device of information receiving ability.However, the application is not limited this.It is above-mentioned each
The function of module can also be stored in the program/instruction in memory by computing device to realize.
As shown in figure 15, the embodiment of the present invention also provides a kind of information transfer system, including：
(such as 1~n of network node, n are more than or equal to 1 for controller and one or more network nodes
Integer)；
The controller, for for predetermined amount of flow allocation identification information, determining corresponding to the identification information
Information, and the information corresponding to the identification information and the identification information is sent to one or more
Network node, wherein, the packet corresponding to the identification information includes mouthful node set and/or link
The constituted information of set；
The network node for receiving the identification information and the information corresponding to the identification information, is used
Opened up in the information and the network of present networks node according to corresponding to the identification information, the identification information
Situation is flutterred, forwarding-table item corresponding to the identification information is generated, and the identification information is carried receiving
Flow when, according to forwarding-table item corresponding to the identification information, forward the flow.
Wherein, when the controller sends the information corresponding to the identification information and the identification information
It is described to receive the identification information and the information corresponding to the identification information during to a network node
Network node, be additionally operable to the identification information and the mark by IGP extensions or BGP extensions
The information announcement corresponding to information is known to other network nodes.
Specific handling process on said apparatus and system is with described in above-mentioned embodiment of the method, therefore in this not
Repeat again.
The embodiment of the present invention also provides a kind of computer-readable recording medium, and the computer that is stored with is executable to be referred to
Order, the computer executable instructions realize the information transmitting methods of embodiment illustrated in fig. 3 when being performed.
The embodiment of the present invention also provides a kind of computer-readable recording medium, and the computer that is stored with is executable to be referred to
Order, the computer executable instructions realize the information transmitting methods of embodiment illustrated in fig. 4 when being performed.
Through the above description of the embodiments, those skilled in the art can be understood that basis
The method of above-described embodiment can add the mode of required general hardware platform to realize by software, certainly
Can the former be more preferably embodiment by hardware, but in many cases.Understood based on such, this
The part that the technical scheme of application substantially contributes to prior art in other words can be with software product
Form embody, the computer software product be stored in a storage medium (such as ROM/RAM,
Magnetic disc, CD) in, including some instructions are to cause a station terminal equipment (can be mobile phone, calculate
Machine, server, or network equipment etc.) perform method described in the application each embodiment.
Obviously, those skilled in the art should be understood that each module or each step of above-mentioned the application can
To be realized with general computing device, they can be concentrated on single computing device, or distribution
On the network that multiple computing devices are constituted, alternatively, the journey that they can be can perform with computing device
Sequence code is realized, it is thus possible to be stored in storage device by computing device to perform, and
And in some cases, can to perform shown or described step different from order herein, or
They are fabricated to each integrated circuit modules respectively, or multiple modules in them or step are made
Realized into single integrated circuit module.So, the application is not restricted to any specific hardware and software
With reference to.
The general principle and principal character of the application and the advantage of the application has been shown and described above.This Shen
It please be not restricted to the described embodiments, simply explanation the application described in above-described embodiment and specification
Principle, on the premise of the application spirit and scope are not departed from, the application also has various changes and modifications,
These changes and improvements are both fallen within the range of claimed the application.
Claims (25)
1. a kind of information transmitting methods, including：
For predetermined amount of flow allocation identification information, and the information corresponding to the identification information is determined, wherein,
Packet corresponding to the identification information includes the letter that mouthful node set and/or link set are constituted
Breath；
Information corresponding to the identification information and the identification information is sent to one or more networks
Node.
2. according to the method described in claim 1, it is characterised in that the Egress node set and/or
The information that link set is constituted is：Identify the bit string set of Egress node and/or link；Or, go out
Mouthful nodal information is enumerated, wherein, the Egress node information includes position forwarding unit identifier BFR-id
Or position forwarding unit prefix BFR-Prefix.
3. according to the method described in claim 1, it is characterised in that the identification information to be single or
The set of multiple label compositions, or can represent the mark of flow for other.
4. according to the method described in claim 1, it is characterised in that corresponding to the identification information
Information also includes following information：Subdomain, bit string length and collection mark.
5. according to the method described in claim 1, it is characterised in that described to distribute mark for predetermined amount of flow
Know information and determine that the information corresponding to the identification information is completed by network entry point or by controlling
Device is completed.
6. according to the method described in claim 1, it is characterised in that the identification information is to any
The distribution of bar predetermined amount of flow；Or, the identification information is to give any sort assignment of traffic.
7. according to the method described in claim 1, it is characterised in that the link set is flow work
The link set of journey TE Link set of paths or other forms.
8. according to the method described in claim 1, it is characterised in that it is described by the identification information and
Information corresponding to the identification information is sent to one or more network nodes, including：
Extended by network entry point by Interior Gateway Protocol IGP or Border Gateway Protocol (BGP) expands
Information announcement corresponding to the identification information and the identification information is given other network nodes by exhibition；Or
Person,
Information as corresponding to controller by the identification information and the identification information is issued to each net
Network node；Or,
Information as corresponding to controller by the identification information and the identification information is handed down to any one
Network node, extended by the network node by IGP or BGP extensions by the identification information and
Information announcement corresponding to the identification information gives other network nodes.
9. method according to claim 8, it is characterised in that the IGP extensions include：Open
Put the extension of formula SPF ospf protocol or Intermediate System-to-Intermediate System ISIS protocol extensions.
10. method according to claim 8, it is characterised in that it is described by controller by the mark
Information corresponding to knowledge information and the identification information is sent to any one network node or each network section
Point includes：Border Gateway Protocol Link State BGP-LS signaling extensions or net are passed through by the controller
Network configuration protocol NETCONF sends the information corresponding to the identification information and the identification information
To any one network node or each network node.
11. the method according to any one of claim 1 to 10, it is characterised in that described information
Transmission method is applied to be based on position index displaying duplication BIER networks.
12. a kind of information transmitting methods, including：
Information of the network node according to corresponding to the identification information, the identification information that are distributed for predetermined amount of flow
And the network topology situation of present networks node, forwarding-table item corresponding to the identification information is generated, wherein,
Packet corresponding to the identification information includes the letter that mouthful node set and/or link set are constituted
Breath；
The network node is when receiving the flow for carrying the identification information, according to the identification information
Corresponding forwarding-table item, forwards the flow.
13. method according to claim 12, it is characterised in that when the network node is net
During network Ingress node, methods described also includes：When predetermined amount of flow enters network, the Web portal section
Point encapsulates the identification information distributed to the predetermined amount of flow to the predetermined amount of flow.
14. method according to claim 12, it is characterised in that methods described also includes：Institute
State network node and receive the identification information that issues of controller and the information corresponding to the identification information；
Or, the network node is received to be extended or Border Gateway Protocol (BGP) by Interior Gateway Protocol IGP
Extend the information corresponding to the identification information and the identification information of notice.
15. the method according to any one of claim 12 to 14, it is characterised in that described information
Transmission method is applied to be based on position index displaying duplication BIER networks.
16. a kind of information transfer device, it is characterised in that including：
First processing module, for for predetermined amount of flow allocation identification information, and determines the identification information institute
Corresponding information, wherein, the packet corresponding to the identification information includes mouthful node set and/or chain
Gather constituted information in road；
Sending module, for the information corresponding to the identification information and the identification information to be sent into one
Individual or multiple network nodes.
17. device according to claim 16, it is characterised in that the Egress node set and/
Or the information that link set is constituted is：Identify the bit string set of Egress node and/or link；Or,
Egress node information is enumerated, wherein, the Egress node information includes position forwarding unit identifier
BFR-id or position forwarding unit prefix BFR-Prefix.
18. the device according to claim 16 or 17, it is characterised in that when described information transmission
When device is arranged at network node, described device also includes：First receiving module, for receiving controller
The information corresponding to identification information and the identification information of determination distributed for predetermined amount of flow.
19. the device according to claim 16 or 17, it is characterised in that when described information transmission
When device is arranged at network node, the sending module, specifically for：Pass through Interior Gateway Protocol IGP
Extension or Border Gateway Protocol (BGP) extension are by corresponding to the identification information and the identification information
Information announcement gives other network nodes.
20. the device according to claim 16 or 17, it is characterised in that when described information transmission
When device is arranged at controller, the sending module, specifically for：Pass through Border Gateway Protocol link shape
State BGP-LS signaling extensions or network configuration protocol NETCONF are by the identification information and the mark
Know the information corresponding to information and be sent to one or more network nodes.
21. a kind of information transfer device, is arranged at network node, it is characterised in that including：
Second processing module, for according to the identification information, identification information institute distributed for predetermined amount of flow
The network topology situation of corresponding information and place network node, generates turn corresponding to the identification information
Forwarding list item, wherein, the packet corresponding to the identification information includes mouthful node set and/or link set
Close constituted information；
Forwarding module, for when receiving the flow for carrying the identification information, being believed according to the mark
Corresponding forwarding-table item is ceased, the flow is forwarded.
22. device according to claim 21, it is characterised in that when the network node is net
During network Ingress node, described device also includes：Package module, for predetermined amount of flow enter network when,
The identification information distributed to the predetermined amount of flow is encapsulated to the predetermined amount of flow.
23. device according to claim 21, it is characterised in that described device also includes：The
Two receiving modules, for receiving corresponding to the identification information and the identification information that controller issues
Information；Or, reception is extended or Border Gateway Protocol (BGP) extension by Interior Gateway Protocol IGP
Information corresponding to the identification information and the identification information of notice.
24. a kind of information transfer system, it is characterised in that including：
Controller and one or more network nodes；
The controller, for for predetermined amount of flow allocation identification information, determining corresponding to the identification information
Information, and the information corresponding to the identification information and the identification information is sent to one or more
Network node, wherein, the packet corresponding to the identification information includes mouthful node set and/or link
The constituted information of set；
The network node for receiving the identification information and the information corresponding to the identification information, is used
Opened up in the information and the network of present networks node according to corresponding to the identification information, the identification information
Situation is flutterred, forwarding-table item corresponding to the identification information is generated, and the identification information is carried receiving
Flow when, according to forwarding-table item corresponding to the identification information, forward the flow.
25. system according to claim 24, it is characterised in that when the controller will be described
It is described to receive when information corresponding to identification information and the identification information is sent to a network node
The network node of information corresponding to the identification information and the identification information, is additionally operable to by in-house network
Close agreement IGP extensions or the identification information and the mark are believed in Border Gateway Protocol (BGP) extension
The corresponding information announcement of breath gives other network nodes.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610227405.8A CN107294859B (en) | 2016-04-13 | 2016-04-13 | Information transmission method, device and system |
| PCT/CN2017/073455 WO2017177756A1 (en) | 2016-04-13 | 2017-02-14 | Method, apparatus and system for transmitting information |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610227405.8A CN107294859B (en) | 2016-04-13 | 2016-04-13 | Information transmission method, device and system |
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| WO2017177756A1 (en) | 2017-10-19 |
| CN107294859B (en) | 2021-04-06 |
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