CN101540711B - Method, system and equipment for establishing point-to-multi-point tunnel in packet network - Google Patents
Method, system and equipment for establishing point-to-multi-point tunnel in packet network Download PDFInfo
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- CN101540711B CN101540711B CN200810081199XA CN200810081199A CN101540711B CN 101540711 B CN101540711 B CN 101540711B CN 200810081199X A CN200810081199X A CN 200810081199XA CN 200810081199 A CN200810081199 A CN 200810081199A CN 101540711 B CN101540711 B CN 101540711B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2212/00—Encapsulation of packets
Abstract
The invention discloses a method, a system and the equipment for establishing a point-to-multi-point tunnel in a packet network. The method comprises the following steps of: sending a point-to-multi-point tunnel establishment message, which carries information parameters of the point-to-multi-point tunnel, by a source node of the point-to-multi-point tunnel; receiving a point-to-multi-point tunnel establishment response message; and reserving resources and establishing a list item. By adopting the method, system and equipment, and due to the interaction of the point-to-multi-point tunnel establishment message and the point-to-multi-point tunnel establishment response message between the source node and other nodes, the point-to-multi-point tunnel related resource reservation and the establishment of the list item are achieved, and the dynamic point-to-multi-point tunnel can be easily established in the packet network in high efficiency.
Description
Technical field
The present invention relates to communication technical field, particularly point-to-multi-point tunnel method for building up, system and the equipment in a kind of packet network.
Background technology
Along with the development of technology, telecommunications network has been finished smoothly by the transition of analogue technique to digital technology, is carrying out by the transition of TDM (Time-Division Multiplexing, time division multiplexing) technology to packet-switch technology.ATM (Asynchronous Transfer Mode, asynchronous transfer mode) group technology is the representative of this transition.Early 1990s, obtained great success based on the Internet of IP (Internet Protocol, IP agreement) group technology owing to the application of Web technology.So telecommunications network has been introduced the IP group technology, and is carried in whole telecommunication services on the IP network, expectation realizes thus by the transition of TDM technology to group technology.
In this course, since existing the Internet as the classical ip network be one free and open, the packet network that does not have unified management mechanism, dangerous, trustless, the shortage management of the Internet have been caused, and service quality lacks assurance, for a lot of important commercial business net and higher data interconnection business and real-time video traffic of quality of service requirement, can't guarantee that it is loaded into public IP network safely, so the IP group technology also can't be born the responsibility telecommunications network by the important task of TDM technology to the group technology transition.
Propose HSAPN (Hierarchical and Sequential Address PacketNetwork, hierarchy sequential address packet network) in the prior art, such as the common telecommunication grouping data net, realized the second step transition of telecommunications network.This system comprises at least one HSAPN net, a plurality of IP network or ATM net, FR (Frame Relay, frame relay) net, and a plurality of ED (boundary solid) equipment, and IP network is connected with the HSAPN net by ED equipment; Also comprise at least one ADT (address translation entity) in each HSAPN net; All devices and ED equipment in the HSAPN net are furnished with a HSAPN address, and all devices in the IP network and ED equipment all are assigned the IP address, and the mapping relations between IP address and the HSAPN address are kept in the interior address mapping table of ADT.This HSAPN is used for the at present already present whole telecommunication services of industry of carrying, and can guarantee that the telecommunication service of its carrying can provide and the professional same services quality of conventional telecommunications.Can also carry Internet service, the ability identical with existing the Internet is provided, support the at present already present whole Internet services of industry, and be used for carrying from now on issuable other business.
In realizing process of the present invention, the inventor finds that there is following shortcoming in prior art:
In the existing hierarchy sequential address packet network technology overall solution has been proposed, but, for the point-to-multipoint tunnel in the current common telecommunication grouping data net, all adopt the mode of static manual configuration to realize, the concrete methods of realizing that lacks dynamic tunnel control, labor intensive, configuration is complicated and easily make mistakes.
Summary of the invention
The embodiment of the invention provides point-to-multi-point tunnel method for building up, system and the equipment in a kind of packet network, to realize the dynamic control of point-to-multi-point tunnel in packet network.
For reaching above-mentioned purpose, the embodiment of the invention provides the method for building up of the point-to-multi-point tunnel in a kind of packet network, comprising:
The source node of described point-to-multi-point tunnel sends point-to-multi-point tunnel and sets up message, carries the point-to-multi-point tunnel information parameter in the described message;
Receive point-to-multi-point tunnel and set up response message;
Carry out the foundation of resource reservation and list item.
The embodiment of the invention also provides the method for building up of a kind of packet network mid point to multipoint channel, comprising:
The source node of described point-to-multi-point tunnel receives point-to-multi-point tunnel and sets up order;
Carry out the foundation of resource reservation and list item;
Send point-to-multi-point tunnel and set up message, carry described point-to-multi-point tunnel information parameter in the described message;
Receive point-to-multi-point tunnel and set up response message.
The embodiment of the invention also provides a kind of source node equipment, comprising:
Message sending unit is used for sending point-to-multi-point tunnel and sets up message;
The message sink unit is used for receiving point-to-multi-point tunnel and sets up response;
The resource reservation unit, be used for sending the foundation of carrying out resource reservation and list item after described point-to-multi-point tunnel is set up message in described message sending unit, or receive the foundation of carrying out resource reservation and list item after described point-to-multi-point tunnel is set up response in described message sink unit.
The embodiment of the invention also provides a kind of intermediary device, between the leaf node in the source node of the point-to-multi-point tunnel of upstream and downstream, comprising:
Intermediate node message sink unit is used for receiving point-to-multi-point tunnel and sets up message, or point-to-multi-point tunnel is set up response message;
Intermediate node building tunnel unit, be used for receiving in described intermediate node message sink unit and carry out the reservation of resource and the foundation of list item after described point-to-multi-point tunnel is set up message, or described intermediate node message sink unit receives and carries out the reservation of resource and the foundation of list item after point-to-multi-point tunnel is set up response message.
The embodiment of the invention also provides a kind of leaf node device, comprising:
Leaf node message sink unit is used for receiving point-to-multi-point tunnel and sets up message;
The leaf node message sending unit is used for sending point-to-multi-point tunnel and sets up response message;
Leaf node building tunnel unit is used for carrying out the foundation of resource reservation and list item after described leaf node message sink unit receives described point-to-multi-point tunnel and sets up message.
The embodiment of the invention also provides the set up system of a kind of packet network mid point to multipoint channel, and described system comprises:
Source node is used for receiving point-to-multi-point tunnel and sets up order, according to the described point-to-multi-point tunnel information parameter that carries in the described order, sends point-to-multi-point tunnel and sets up message; Receive point-to-multi-point tunnel and set up response message, carry out the foundation of resource reservation and list item;
Leaf node is used for receiving and sets up message from the point-to-multi-point tunnel of described source node, carries out the foundation of resource reservation and list item, and sets up response message to described source node transmission point-to-multi-point tunnel.
The technical scheme of the embodiment of the invention has the following advantages:
Set up message, point-to-multi-point tunnel by source node and other internodal point-to-multi-point tunnels and set up the mutual of response message, realized resource reservation that point-to-multi-point tunnel is relevant and the foundation of list item.The method that the application of the invention embodiment provides has realized Dynamic Establishing, control and the management of point-to-multi-point tunnel, can set up simply efficiently dynamic point-to-multi-point tunnel in packet network, improves the systematic function in the packet network.
Description of drawings
Fig. 1 is the point-to-multi-point tunnel method for building up flow chart in the embodiment of the invention packet network;
Fig. 2 is the point-to-multi-point tunnel method for building up flow chart in the another packet network of the embodiment of the invention;
Fig. 3 is the structural representation that the point-to-multi-point tunnel of the embodiment of the invention is set up system;
Fig. 4 is the structural representation of the source node equipment in the embodiment of the invention;
Fig. 5 is the structural representation of the intermediary device in the embodiment of the invention;
Fig. 6 is the structural representation of the leaf node device in the embodiment of the invention.
Embodiment
The technical scheme that the embodiment of the invention provides, on HSAPN, according to artificial overall planning, perhaps dynamic calculation, determine the source node HSAPN address of point-to-multi-point tunnel, the information such as purpose leaf node HSAPN address, resource requirement and intermediate node of point-to-multi-point tunnel, and these information exchanges are crossed control and management equipment or other entity in the network, and be issued to the source node of point-to-multi-point tunnel, initiated the processes such as the foundation of point-to-multi-point tunnel and maintenance management by source node.Below in conjunction with accompanying drawing, the embodiment of the invention is elaborated.
The method for building up of a kind of packet network mid point to multipoint channel is provided in the embodiments of the invention, as shown in Figure 1, comprises:
100, source node sends point-to-multi-point tunnel and sets up message, carries the point-to-multi-point tunnel information parameter in the described message.
In the present embodiment, send point-to-multipoint described source node at source node and at first receive point-to-multi-point tunnel foundation order, carry the point-to-multi-point tunnel information parameter in the described order; The transmit leg that this point-to-multi-point tunnel is set up order may be the control and management equipment in the network or other entity.
Described point-to-multi-point tunnel information parameter comprises: the parameters such as the purpose leaf node HSAPN address (hereinafter referred to as the leaf node address) of the source node HSAPN address (hereinafter referred to as source node address) of point-to-multi-point tunnel, point-to-multi-point tunnel and resource requirement, wherein resource requirement can be the parameters such as bandwidth.
Source node is set up order to the point-to-multi-point tunnel that receives and is carried out access control, for example, judge whether the point-to-multi-point tunnel that receives is set up the data format of ordering correct, if correct, whether the idling-resource of then judging self node satisfies described resource requirement, if satisfy, determine that then access detects successfully.
After access control is passed through, obtain and record the point-to-multi-point tunnel information parameter that carries in the described order; Source node generates point-to-multi-point tunnel according to these point-to-multi-point tunnel informations parameter and sets up message, and judges whether the source needs that described point-to-multi-point tunnel is set up message and carry out branch process.
(1) carry out branch process if need to set up message to described point-to-multi-point tunnel:
If the point-to-multi-point tunnel information parameter also comprises: outbound port, next hop address, then source node is according to branch mechanism, point-to-multi-point tunnel set up message be sent to leaf node in the branch.At this moment, the point-to-multi-point tunnel of branch is set up message and is also carried the sign Branch ID of branch and the source node sign Branch Originator of branch.
If the point-to-multi-point tunnel information parameter also comprises: the source node of outbound port, next hop address, described point-to-multi-point tunnel and the pre-set path between leaf node, then source node is according to the pre-set path between branch's mechanism and source node and leaf node, point-to-multi-point tunnel set up message be sent to leaf node in the branch.At this moment, the point-to-multi-point tunnel of branch is set up message and is also carried the sign Branch ID of branch and the source node sign Branch Originator of branch.
In this case, branch's source node need to record all point-to-multi-point tunnel informations parameter, and Branch ID is unique in this point-to-multi-point tunnel.
(2) do not carry out branch process if do not need that described point-to-multi-point tunnel is set up message:
If the point-to-multi-point tunnel information parameter also comprises: outbound port and next hop address, then source node address structure and the routing rule orderly according to address, the stratification of leaf node set up message with point-to-multi-point tunnel and is sent to leaf node.
If the point-to-multi-point tunnel information parameter also comprises: the source node of point-to-multi-point tunnel and the pre-set path between leaf node, outbound port and next hop address, then source node is set up message with described point-to-multi-point tunnel and is sent to described leaf node according to the address of leaf node and the pre-set path between source node and leaf node.
Be understandable that, intermediate node receives point-to-multi-point tunnel set up message after, receiving point-to-multi-point tunnel with source node, to set up the processing of doing after the order be similar.
Intermediate node is set up message to point-to-multi-point tunnel and is carried out access control; For example, judge whether the point-to-multi-point tunnel receive is set up the data format of message correct, if correct, judge then whether the idling-resource of self node satisfies described resource requirement, if satisfy, determine that then access detects successfully.
After access control is passed through, obtain and record the point-to-multi-point tunnel information parameter that carries in the described message; Judge whether that need to set up message to described point-to-multi-point tunnel carries out branch process.According to the result who judges and concrete point-to-multi-point tunnel information parameter, transmit point-to-multi-point tunnel and set up message.Such process constantly repeats, and sets up message until leaf node receives this point-to-multi-point tunnel.
Leaf node receives point-to-multi-point tunnel set up message after, similarly, this message is carried out access control, obtain the point-to-multi-point tunnel information parameter that carries in the message, and carry out the foundation of resource reservation and list item according to these parameters.Behind the carrying out resource reservation and set up list item of success, upstream intermediate node sends point-to-multi-point tunnel and sets up response message.
Receive point-to-multi-point tunnel and set up the point-to-multi-point tunnel information parameter that records before the intermediate node basis of response message, carry out the foundation of resource reservation and list item.Behind the carrying out resource reservation and set up list item of success, similarly, upstream intermediate node sends point-to-multi-point tunnel and sets up response message.Such process constantly repeats, and sets up response message until source node receives this point-to-multi-point tunnel.
In this process, if intermediate node has received at least 2 point-to-multi-point tunnels and has set up response message, can adopt aggregation scheme to reduce bandwidth occupancy, reduce the message number, strengthen simultaneously webmaster and source node are set up process to point-to-multi-point tunnel manageability.For example, when there was a plurality of branch in point-to-multi-point tunnel, the method for the source node of this branch by converging set up response message to point-to-multi-point tunnel and converged rear updrift side transmission along this point-to-multi-point tunnel.
110, source node receives point-to-multi-point tunnel and sets up response message; In the present embodiment, source node receives from the point-to-multi-point tunnel of the intermediate node in downstream and sets up response message.
120, source node carries out the foundation of resource reservation and list item.
In the present embodiment, the mode of carrying out resource reservation can be fixed form, or sharing mode, and fixed form is and fixedly takies certain resource, this resource is only for current business, and sharing mode is the resource of reservation and can shares according to occupancy and other business.
In the present embodiment, under different working methods, the list item of setting up is different.For example, under non-connection-oriented working method, the list item of foundation is routing table, comprises source address, group address, incoming interface, outgoing interface in the described routing table; Under connection-oriented working method, the list item of foundation is the label swap table, comprises source address, group address, incoming interface, incoming interface label, outgoing interface, outgoing interface label in the described label swap table.Be appreciated that the parameter that comprises in the above-mentioned list item can also be other parameters, enumerate no longer one by one herein.
Need to prove, described the situation that has intermediate node between source node and the leaf node in the present embodiment, be understandable that, if there is direct communication channel between source node and the leaf node, then can not need intermediate node.
Another the packet network mid point that provides in the embodiments of the invention as shown in Figure 2, comprising to the method for building up of multipoint channel:
200, source node receives point-to-multi-point tunnel and sets up order.
In the present embodiment, similar with a upper embodiment, source node carries out access control to this order, obtains and record the point-to-multi-point tunnel information parameter that carries in this order.
210, source node carries out the foundation of resource reservation and list item.
Different from a upper embodiment, in the present embodiment, source node just carries out the foundation of resource reservation and list item according to the point-to-multi-point tunnel information parameter that carries in this order after the access control of point-to-multi-point tunnel being set up order is passed through.According to the point-to-multi-point tunnel information parameter that carries in this order, generate point-to-multi-point tunnel and set up message simultaneously.
220, source node sends point-to-multi-point tunnel and sets up message, carries described point-to-multi-point tunnel information parameter in the described message.
Similar with a upper embodiment, source node judges whether that need to set up message to described point-to-multi-point tunnel carries out branch process.And according to the result who judges and concrete point-to-multi-point tunnel information parameter, intermediate node downstream or leaf node send point-to-multi-point tunnel and set up message.
The intermediate node in downstream receives point-to-multi-point tunnel set up message after, carry out equally access control, obtain and record the operations such as point-to-multi-point tunnel information parameter, after access control is passed through, carry out the foundation of resource reservation and list item according to the point-to-multi-point tunnel information parameter.Such process constantly repeats, and sets up message until leaf node receives point-to-multi-point tunnel.
Leaf node receives point-to-multi-point tunnel set up message after, carry out equally access control, obtain and record the operations such as point-to-multi-point tunnel information parameter, after access control is passed through, carry out the foundation of resource reservation and list item according to the point-to-multi-point tunnel information parameter.After leaf node successfully carried out the foundation of resource reservation and list item, upstream intermediate node sent point-to-multi-point tunnel and sets up response message.
After intermediate node receives, also can send point-to-multi-point tunnel to the intermediate node of own upstream and set up response message.Similarly, set up response message if intermediate node has received at least 2 point-to-multi-point tunnels, can adopt aggregation scheme to reduce bandwidth occupancy, reduce the message number, strengthen simultaneously webmaster and source node are set up process to point-to-multi-point tunnel manageability.For example, when there was a plurality of branch in point-to-multi-point tunnel, the method for the source node of this branch by converging set up response message to point-to-multi-point tunnel and converged rear updrift side transmission along this point-to-multi-point tunnel.
Such process constantly repeats, and sets up response message until source node receives point-to-multi-point tunnel.
230, source node receives point-to-multi-point tunnel and sets up response message.
In the present embodiment, the mode of carrying out resource reservation can be fixed form, or sharing mode, and fixed form is and fixedly takies certain resource, this resource is only for current business, and sharing mode is the resource of reservation and can shares according to occupancy and other business.
In the present embodiment, under different working methods, the list item of setting up is different.For example, under non-connection-oriented working method, the list item of foundation is routing table, comprises source address, group address, incoming interface, outgoing interface in the described routing table; Under connection-oriented working method, the list item of foundation is the label swap table, comprises source address, group address, incoming interface, incoming interface label, outgoing interface, outgoing interface label in the described label swap table.Be appreciated that the parameter that comprises in the above-mentioned list item can also be other parameters, enumerate no longer one by one herein.
Need to prove, described the situation that has intermediate node between source node and the leaf node in the present embodiment, be understandable that, if there is direct communication channel between source node and the leaf node, then can not need intermediate node.
Above embodiment has described the process of setting up of point-to-multi-point tunnel.In an embodiment of the present invention, set up in the process at point-to-multi-point tunnel, set up response message and in the process of carrying out, mistake occurs if point-to-multi-point tunnel is set up message or point-to-multi-point tunnel, can announce by the generation error notice message.
Carry out wrong announcement, can announce with unified error notification message that point-to-multi-point tunnel is set up message and point-to-multi-point tunnel is set up the mistake that response message occurs in the process of implementation; For example, announce with unified ErrReport message that point-to-multi-point tunnel is set up message and point-to-multi-point tunnel is set up the mistake that response message occurs in the process of implementation.
Also can use different error notification message to announce respectively that point-to-multi-point tunnel is set up message and point-to-multi-point tunnel is set up the mistake that response message occurs in the process of implementation.For example, announce point-to-multi-point tunnel with SetupErr message and set up the mistake that message occurs in the process of implementation, announce point-to-multi-point tunnel with ConnectErr message and set up the mistake that response message occurs in the process of implementation.
No matter use which kind of mode, all carry error coded in this error notification message, can identify situation about making a mistake and the reason that makes a mistake by error coded, the more common reason that makes a mistake for example, point-to-multi-point tunnel sets up that message format mistake, multipoint channel set up that response message format mistake, point-to-multi-point tunnel set up that intelligence bandwidth inadequate resource, multipoint channel set up that the response message bandwidth resources are not enough, point-to-multi-point tunnel is set up the message multicast table and set up wrong, multipoint channel and set up the response message multicast table and set up wrong etc.According to the reason that makes a mistake, process accordingly.For example:
Source node and leaf node receive ErrReport message announcement point-to-multi-point tunnel and set up response message and point-to-multi-point tunnel occurs in the process of implementation and set up the response message format mistake, perhaps point-to-multi-point tunnel is set up the response message multicast table and is set up mistake, then source node is ignored and is not done action, sets up response message and leaf node resends point-to-multi-point tunnel.
What source node and leaf node were received the ErrReport message announcement is that point-to-multi-point tunnel is set up response message bandwidth resources deficiency, then initiates dismantling operation by source node.
Source node receives SetupErr message announcement point-to-multi-point tunnel and sets up and occur point-to-multi-point tunnel in the message implementation and set up the message format mistake, perhaps point-to-multi-point tunnel is set up the message multicast table and is set up mistake, and then source node resends point-to-multi-point tunnel and sets up message.
Source node and leaf node receive ConnectErr message announcement point-to-multi-point tunnel and set up and occur point-to-multi-point tunnel in the response message implementation and set up the response message format mistake, perhaps point-to-multi-point tunnel is set up the response message multicast table and is set up mistake, then source node is ignored and is not done action, sets up response message and leaf node resends point-to-multi-point tunnel.
It is not enough that source node and leaf node receive that ConnectErr message announcement point-to-multi-point tunnel is set up the response message bandwidth resources, then initiates dismantling operation by source node.
More than describe setting up in the process of point-to-multi-point tunnel and notifying method when wrong occurred.Set up after process neutralization is successfully established at point-to-multi-point tunnel, also need the resource status of point-to-multi-point tunnel is safeguarded.
Maintenance to the resource status of point-to-multi-point tunnel can be the cycle active maintenance, and each node carries out active maintenance according to the cycle of presetting.
For example, when whether the current tunnel of detection is disconnected, just can send to downstream node every 1 minute building tunnel message or upstream nodes and send the building tunnel response message, and the point-to-multi-point tunnel of waiting for other node transmission sets up message and point-to-multi-point tunnel is set up response message, the point-to-multi-point tunnel of other node transmission is set up message or point-to-multi-point tunnel is set up response message if do not receive in the sense cycle that presets, for example 3 minutes, determine that then current tunnel is disconnected, then delete resource and the list item reserved in self node 0.
Also can set threshold value, in the sense cycle that is presetting, not receive point-to-multi-point tunnel and set up message or point-to-multi-point tunnel and set up the number of times of response message and reach threshold value, determine that then current tunnel is disconnected.
Certainly, also can set threshold value, and unspecific restriction sense cycle, not set up message or point-to-multi-point tunnel and set up the number of times of response message and reach threshold value as long as receive point-to-multi-point tunnel, just can determine that current tunnel is disconnected.
Resource status to point-to-multi-point tunnel can also be passive maintenance, and each node comes the tunnel is carried out concrete maintenance according to the message that receives.
For example, each node can not detect and remove tunnel resource voluntarily, but request is removed in the tunnel that other node-routing device of passive wait sends, and the request of removing of this tunnel can be initiated by source node, also can be initiated by leaf node, can also be initiated by intermediate node.
If initiated by source node, then the request of removing of this tunnel can be according to the tunnel path order through intermediate node and leaf node, after intermediate node receives this tunnel dismounting request, transmit this request to other intermediate node, and delete resource and the list item that self node is reserved, other intermediate node is carried out same operation, until arrive leaf node;
If initiated by leaf node, then the request of removing of this tunnel can according to the tunnel path order through intermediate node, arrive source node, after intermediate node receives this tunnel dismounting request, upstream nodes is transmitted this request, and deletes resource and list item that self node is reserved, until arrive source node;
If initiated by intermediate node, then this tunnel dismounting request meeting is mail to upstream source node and downstream leaf node simultaneously according to the tunnel path order, and each node is deleted bandwidth resources and the list item that self node is reserved equally.
Certainly, after above-mentioned point-to-multi-point tunnel was set up, source node can also arrange requirement according to system, removes leaf node from point-to-multi-point tunnel, and this operation is called deletion/beta pruning.
Deletion/beta pruning can be to show deletion/beta pruning: source node initiatively sends deletion/beta pruning request message SetupTear message, discharges every resource, comprises bandwidth, list item etc.After the deletion action, downstream node returns a deletion/beta pruning response message ConnectTear response to source node, and announcement source node, and then announcement control and management equipment are deleted successful or unsuccessful.When point-to-multi-point tunnel is adopted passive maintenance, can adopt this demonstration deletion/beta pruning.
Deletion/beta pruning can also be implicit expression deletion/beta pruning: set up in the message at point-to-multi-point tunnel, the source node is deleted the relevant information of the node of to be deleted/beta pruning, like this, the node of to be deleted/beta pruning can not receive for a long time point-to-multi-point tunnel and sets up message message, just automatically deletes from this point-to-multi-point tunnel.During to point-to-multi-point tunnel employing cycle active maintenance, can adopt this implicit expression deletion/beta pruning.
Certainly, the node that does not belong to point-to-multi-point tunnel can also be joined described point-to-multi-point tunnel, i.e. grafting operation.For example: source node sends a grafting message, the processing mode that the processing of grafting message is set up message with point-to-multi-point tunnel is consistent, by the processing of each node to message, this new node is joined in the point-to-multi-point tunnel, and upgrade multicast routing table or label swap table.Certainly, also can carry node to be added in the message and realize by setting up at point-to-multi-point tunnel.
The embodiment of the invention also provides the set up system of a kind of packet network mid point to multipoint channel, as shown in Figure 3, comprising:
Described system also comprises:
At least one intermediate node 20 be used for to receive and to set up message from the point-to-multi-point tunnel of described source node 10, and described point-to-multi-point tunnel is set up message sends to described leaf node 30; Reception is set up response message from the point-to-multi-point tunnel of described leaf node 30, and described point-to-multi-point tunnel is set up response message sends to described source node 10; Carry out the reservation of resource and the foundation of list item.
Wherein, under the non-connection-oriented working method, the list item of foundation is routing table, comprises source address, group address, incoming interface, outgoing interface in the described routing table; Under connection-oriented working method, the list item of foundation is the label swap table, comprises source address, group address, incoming interface, incoming interface label, outgoing interface, outgoing interface label in the described label swap table.Be appreciated that the parameter that comprises in the above-mentioned list item can also be other parameters, enumerate no longer one by one herein.
The embodiment of the invention also provides a kind of source node equipment 100, as shown in Figure 4, comprising:
Message sending unit 101 is used for sending point-to-multi-point tunnel and sets up message;
Message sink unit 102 is used for receiving point-to-multi-point tunnel and sets up response;
Resource reservation unit 103, be used for sending the foundation of carrying out resource reservation and list item after described point-to-multi-point tunnel is set up message in described message sending unit 101, or receive the foundation of carrying out resource reservation and list item after described point-to-multi-point tunnel is set up response in described message sink unit 102.
Described source node equipment 100 also comprises:
Acquiring unit 104 is used for receiving point-to-multi-point tunnel and sets up order, obtains the point-to-multi-point tunnel information parameter that carries in the described order;
Access control unit 105, the point-to-multi-point tunnel that is used for that described acquiring unit 104 is received are set up order and are carried out access control;
Information recording unit 106 is used for recording the information parameter of described point-to-multi-point tunnel when the access control of described access control unit 105 is passed through;
Message generation unit 107 is used for setting up message according to the information parameter generation point-to-multi-point tunnel of described point-to-multi-point tunnel;
Branch Processing Unit 108 is used for judging whether that need to set up message to described point-to-multi-point tunnel carries out branch process when the access control of described access control unit 105 is passed through; Notify described message sending unit 102 to set up message to the point-to-multi-point tunnel that at least one downstream node sends described point according to the branch process judged result.
Further, described source node equipment also comprises:
Mistake processing unit 109 is used for being received in that point-to-multi-point tunnel sets up that message and/or point-to-multi-point tunnel set up that the response message implementation makes a mistake and the error notification message that produces, and described error notification message is carried error coded; According to described error coded described error notification message is processed;
Grafting unit 111 is used for sending grafting message, and the node that does not belong to described point-to-multi-point tunnel is added described point-to-multi-point tunnel.
The embodiment of the invention also provides a kind of intermediary device 200, as shown in Figure 5, comprising:
Intermediate node message sink unit 201 is used for receiving point-to-multi-point tunnel and sets up message, or point-to-multi-point tunnel is set up response message;
Intermediate node building tunnel unit 202, be used for receiving in described intermediate node message sink unit 201 and carry out the reservation of resource and the foundation of list item after described point-to-multi-point tunnel is set up message, or described intermediate node message sink unit 201 receives and carries out the reservation of resource and the foundation of list item after point-to-multi-point tunnels are set up response message.
Described intermediary device also comprises:
Intermediate node access control unit 203 is used for that the point-to-multi-point tunnel that described intermediate node message sink unit 201 receives is set up message and carries out access control;
Intermediate node information acquisition unit 204 is used for obtaining the information parameter that point-to-multi-point tunnel that described intermediate node message sink unit 201 receives is set up the described point-to-multi-point tunnel that message carries;
Intermediate node information recording unit 205 is used for recording the information parameter of described point-to-multi-point tunnel when the access control of described intermediate node access control unit 203 is passed through;
Intermediate node Dispatch Unit 206, described point-to-multi-point tunnel is set up message or point-to-multi-point tunnel is set up response message for transmitting;
Converge unit 207, at least 2 point-to-multi-point tunnels that are used for receiving are set up response message and are converged, and the message after will converging sends to described intermediate node Dispatch Unit 206;
Intermediate node Branch Processing Unit 208 is used for judging whether that need to set up message to point-to-multi-point tunnel carries out branch process when the access control of described intermediate node access control unit 203 is passed through; Notify described intermediate node Dispatch Unit 206 to send described point-to-multi-point tunnel at least one downstream node according to the branch process judged result and set up message.
Further, described intermediary device 200 also comprises:
Intermediate node error notification message elements 209 is used for when setting up message and/or response message implementation and making a mistake, generating and sending error notification message described, carries error coded in the described error notification message.
The embodiment of the invention also provides a kind of leaf node device 300, as shown in Figure 6, comprising:
Leaf node message sink unit 301 is used for receiving point-to-multi-point tunnel and sets up message;
Leaf node message sending unit 302 is used for sending point-to-multi-point tunnel and sets up response message;
Leaf node building tunnel unit 303 is used for carrying out the foundation of resource reservation and list item after described leaf node message sink unit 301 receives described point-to-multi-point tunnel and sets up message.
Described leaf node device also comprises:
Leaf node error notification message elements 304 is used for when setting up message and/or response message implementation and making a mistake, generating and sending error notification message described, carries error coded in the described error notification message.
By the description of above-described embodiment, the technical scheme of the embodiment of the invention has the following advantages:
Set up message, point-to-multi-point tunnel by source node and other internodal point-to-multi-point tunnels and set up the mutual of response message, realized resource reservation that point-to-multi-point tunnel is relevant and the foundation of list item.The method that the application of the invention embodiment provides has realized Dynamic Establishing, control and the management of point-to-multi-point tunnel, can set up simply efficiently dynamic point-to-multi-point tunnel in packet network, improves the systematic function in the packet network.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode in a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a station terminal equipment (can be mobile phone, personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be looked protection scope of the present invention.
Claims (25)
1. a packet network mid point is characterized in that to the method for building up of multipoint channel, comprising:
The source node of described point-to-multi-point tunnel sends point-to-multi-point tunnel and sets up message, carries the point-to-multi-point tunnel information parameter in the described message; Described point-to-multi-point tunnel information parameter comprises: the source node hierarchy sequential address packet network HSAPN address of described point-to-multi-point tunnel, leaf node hierarchy sequential address packet network HSAPN address and the resource requirement of described point-to-multi-point tunnel;
Receive point-to-multi-point tunnel and set up response message;
Described point-to-multi-point tunnel is set up message and described point-to-multi-point tunnel, and to set up response message mutual, carries out the foundation of resource reservation and list item.
2. the packet network mid point is characterized in that to the method for building up of multipoint channel as claimed in claim 1, and before the source node transmission point-to-multi-point tunnel of described point-to-multi-point tunnel was set up message, described method also comprised:
Receive point-to-multi-point tunnel and set up order;
Described point-to-multi-point tunnel is set up order carry out access control;
Obtain described point-to-multi-point tunnel and set up the point-to-multi-point tunnel information parameter that carries in the order;
Record the information parameter of described point-to-multi-point tunnel;
Information parameter generation point-to-multi-point tunnel according to described point-to-multi-point tunnel is set up message;
Judge that described point-to-multi-point tunnel sets up message and whether need branch process.
3. the packet network mid point is characterized in that to the method for building up of multipoint channel as claimed in claim 1, described point-to-multi-point tunnel is set up order carry out access control, comprising:
Judge whether the point-to-multi-point tunnel receive is set up the data format of order correct, if correct, judge then whether the idling-resource of self node satisfies described resource requirement, if satisfy, determine that then access detects successfully.
4. the packet network mid point is characterized in that to the method for building up of multipoint channel as claimed in claim 3,
If setting up message, described point-to-multi-point tunnel do not need branch process, described point-to-multi-point tunnel information parameter also comprises: outbound port and next hop address, then the source node of described point-to-multi-point tunnel sends point-to-multi-point tunnel and sets up message, specifically comprise: address structure and routing rule that the source node of described point-to-multi-point tunnel is orderly according to address, the stratification of the leaf node of point-to-multi-point tunnel, described point-to-multi-point tunnel is set up message be sent to described leaf node;
If setting up message, described point-to-multi-point tunnel do not need branch process, described point-to-multi-point tunnel information parameter also comprises: the source node of point-to-multi-point tunnel and the pre-set path between leaf node, outbound port and next hop address, then the source node of described point-to-multi-point tunnel sends point-to-multi-point tunnel and sets up message, specifically comprise: the source node of described point-to-multi-point tunnel is set up message with described point-to-multi-point tunnel and is sent to described leaf node according to address and the source node of point-to-multi-point tunnel and the pre-set path between leaf node of leaf node;
If setting up message, described point-to-multi-point tunnel needs branch process, described point-to-multi-point tunnel information parameter also comprises: outbound port, next hop address, then the source node of described point-to-multi-point tunnel sends point-to-multi-point tunnel and sets up message, specifically comprise: the source node of described point-to-multi-point tunnel is according to branch mechanism, described point-to-multi-point tunnel set up message be sent to described leaf node in the branch; Described point-to-multi-point tunnel in the branch is set up message and is carried the sign Branch ID of branch and the source node sign Branch Originator of branch;
If setting up message, described point-to-multi-point tunnel needs branch process, described point-to-multi-point tunnel information parameter also comprises: the source node of outbound port, next hop address, described point-to-multi-point tunnel and the pre-set path between leaf node, then the source node of described point-to-multi-point tunnel sends point-to-multi-point tunnel and sets up message, specifically comprise: the source node of described point-to-multi-point tunnel is according to the source node of branch's mechanism and point-to-multi-point tunnel and the pre-set path between leaf node, described point-to-multi-point tunnel set up message be sent to described leaf node in the branch; Described point-to-multi-point tunnel in the branch is set up message and is carried the sign Branch ID of branch and the source node sign Branch Originator of branch.
5. the packet network mid point is characterized in that to the method for building up of multipoint channel as claimed in claim 4, described leaf node receives described point-to-multi-point tunnel set up message after,
Described point-to-multi-point tunnel is set up message carry out access control;
Obtain described point-to-multi-point tunnel and set up the point-to-multi-point tunnel information parameter that carries in the message;
According to described point-to-multi-point tunnel information parameter, carry out the foundation of resource reservation and list item;
Send point-to-multi-point tunnel and set up response message to the source node of described point-to-multi-point tunnel.
6. the packet network mid point is characterized in that to the method for building up of multipoint channel as claimed in claim 5, if having intermediate node between the source node of described point-to-multi-point tunnel and the leaf node, then
The source node of described point-to-multi-point tunnel is set up message by described intermediate node with described point-to-multi-point tunnel and is sent to described leaf node, described intermediate node receives described point-to-multi-point tunnel set up message after,
Described point-to-multi-point tunnel is set up message carry out access control;
Obtain described point-to-multi-point tunnel and set up the point-to-multi-point tunnel information parameter that carries in the message;
Record described point-to-multi-point tunnel information parameter;
Judge that described point-to-multi-point tunnel sets up message and whether need branch process;
According to described judged result and described point-to-multi-point tunnel information parameter, intermediate node downstream sends described point-to-multi-point tunnel and sets up message, is sent to leaf node until described point-to-multi-point tunnel is set up message;
Described leaf node is set up the source node that response message is sent to described point-to-multi-point tunnel by described intermediate node with described point-to-multi-point tunnel, described intermediate node receives described point-to-multi-point tunnel set up response message after,
Described point-to-multi-point tunnel information parameter according to described intermediate node record carries out the reservation of resource and the foundation of list item;
Upstream intermediate node sends described point-to-multi-point tunnel and sets up response message, until described point-to-multi-point tunnel is set up the source node that response message is sent to described point-to-multi-point tunnel.
As claimed in claim 6 the packet network mid point to the method for building up of multipoint channel, it is characterized in that, if described intermediate node receives at least 2 described point-to-multi-point tunnels and sets up response message, then described intermediate node is set up response message with the point-to-multi-point tunnel that receives and is converged rear upstream intermediate node transmission.
As in the claim 1 to 7 as described in each packet network mid point it is characterized in that to the method for building up of multipoint channel,
Under non-connection-oriented working method, described list item is routing table;
Under connection-oriented working method, described list item is the label swap table.
As in the claim 1 to 7 as described in each packet network mid point it is characterized in that to the method for building up of multipoint channel described method also comprises,
Setting up message and/or described point-to-multi-point tunnel at described point-to-multi-point tunnel sets up and occurs in the implementation of response message producing error notification message and announcing when wrong;
Receive the node of described error notification message, according to the error coded of carrying in the described error notification message, the situation that identification makes a mistake and the reason that makes a mistake, and process accordingly.
10. the packet network mid point is characterized in that to the method for building up of multipoint channel as claimed in claim 9,
If the source node of described point-to-multi-point tunnel receives described error notification message, and the reason that makes a mistake is that point-to-multi-point tunnel is set up the message format mistake, the reason that perhaps makes a mistake is that multipoint channel is set up the message multicast table and set up mistake, and then the source node of described point-to-multi-point tunnel resends point-to-multi-point tunnel and sets up message;
If the source node of described point-to-multi-point tunnel and described leaf node receive described error notification message, and the reason that makes a mistake is that point-to-multi-point tunnel is set up the response message format mistake, the reason that perhaps makes a mistake is that multipoint channel is set up the response message multicast table and set up mistake, then the source node of described point-to-multi-point tunnel does not process, and described leaf node resends point-to-multi-point tunnel and sets up response message.
11. as in the claim 1 to 7 as described in each packet network mid point it is characterized in that to the method for building up of multipoint channel described method also comprises,
Node in the described point-to-multi-point tunnel is safeguarded described point-to-multi-point tunnel based on active mode, node in the described point-to-multi-point tunnel is according to the cycle of presetting, set up message or set up response message to the upstream node transmission point-to-multi-point tunnel of oneself to the downstream node transmission point-to-multi-point tunnel of oneself, and the point-to-multi-point tunnel of waiting for other node transmission sets up message and point-to-multi-point tunnel is set up response message, when in the sense cycle that presets, not receiving point-to-multi-point tunnel that other node sends and setting up message or point-to-multi-point tunnel and set up response message, determine that described point-to-multi-point tunnel is disconnected, delete resource and the list item reserved in self node; Perhaps,
Node in the described point-to-multi-point tunnel is safeguarded described point-to-multi-point tunnel based on passive mode, if the node in the described point-to-multi-point tunnel receives the tunnel request of removing, then transmit described tunnel to other node and remove request and delete resource and the list item that self node is reserved.
12. as in the claim 1 to 7 as described in each packet network mid point it is characterized in that to the method for building up of multipoint channel described method also comprises,
Node to described point-to-multi-point tunnel carries out explicit deletion/beta pruning, the source node of described point-to-multi-point tunnel sends deletion/beta pruning request message, the node that receives described deletion/beta pruning request message discharges every resource, returns deletion/beta pruning response message to the source node of described point-to-multi-point tunnel;
Node to described point-to-multi-point tunnel carries out implicit expression deletion/beta pruning, the described point-to-multi-point tunnel that the source node of described point-to-multi-point tunnel sends is set up the information that does not carry to be deleted/beta pruning node in the message, described to be deleted/the beta pruning node do not receive the point-to-multi-point tunnel that other node sends and sets up message, automatically delete from described point-to-multi-point tunnel in the sense cycle that presets.
13. as in the claim 1 to 7 as described in each packet network mid point it is characterized in that to the method for building up of multipoint channel described method also comprises,
The node that does not belong to described point-to-multi-point tunnel is added described point-to-multi-point tunnel, and the described point-to-multi-point tunnel that the source node of described point-to-multi-point tunnel sends is set up in the message, carries the described node that does not belong to described point-to-multi-point tunnel.
14. a packet network mid point is characterized in that to the method for building up of multipoint channel, comprising:
The source node of described point-to-multi-point tunnel receives point-to-multi-point tunnel and sets up order;
Point-to-multi-point tunnel is set up message and point-to-multi-point tunnel, and to set up response message mutual, carries out the foundation of resource reservation and list item;
Send point-to-multi-point tunnel and set up message, carry described point-to-multi-point tunnel information parameter in the described message; Described point-to-multi-point tunnel information parameter comprises: the source node hierarchy sequential address packet network HSAPN address of described point-to-multi-point tunnel, leaf node hierarchy sequential address packet network HSAPN address and the resource requirement of described point-to-multi-point tunnel;
Receive point-to-multi-point tunnel and set up response message.
15. the packet network mid point is characterized in that to the method for building up of multipoint channel as claimed in claim 14, before the source node of described point-to-multi-point tunnel carried out the foundation of resource reservation and list item, described method also comprised:
Described point-to-multi-point tunnel is set up order carry out access control;
Obtain described point-to-multi-point tunnel and set up the point-to-multi-point tunnel information parameter that carries in the order;
Record the information parameter of described point-to-multi-point tunnel;
The source node of described point-to-multi-point tunnel carries out the foundation of resource reservation and list item, is specially: the information parameter according to the point-to-multi-point tunnel of described record, carry out the foundation of resource reservation and list item;
The source node of described point-to-multi-point tunnel sends point-to-multi-point tunnel and sets up message, is specially: the information parameter generation point-to-multi-point tunnel according to described point-to-multi-point tunnel is set up message; And judge that described point-to-multi-point tunnel sets up message and whether need branch process, according to described judged result and described point-to-multi-point tunnel information parameter, send described point-to-multi-point tunnel and set up message.
16. a source node equipment is characterized in that, comprising:
Message sending unit is used for sending point-to-multi-point tunnel and sets up message; Carry described point-to-multi-point tunnel information parameter in the described message, described point-to-multi-point tunnel information parameter comprises: the source node hierarchy sequential address packet network HSAPN address of described point-to-multi-point tunnel, leaf node hierarchy sequential address packet network HSAPN address and the resource requirement of described point-to-multi-point tunnel; The message sink unit is used for receiving point-to-multi-point tunnel and sets up response;
The resource reservation unit, be used for sending the foundation of carrying out resource reservation and list item after described point-to-multi-point tunnel is set up message in described message sending unit, or receive the foundation of carrying out resource reservation and list item after described point-to-multi-point tunnel is set up response in described message sink unit, concrete, described point-to-multi-point tunnel is set up message and described point-to-multi-point tunnel, and to set up response message mutual, carries out the foundation of resource reservation and list item.
17. source node equipment is characterized in that as claimed in claim 16, described source node equipment also comprises:
Acquiring unit is used for receiving point-to-multi-point tunnel and sets up order, obtains the point-to-multi-point tunnel information parameter that carries in the described order;
Access control unit, the point-to-multi-point tunnel that is used for that described acquiring unit is received are set up order and are carried out access control;
Information recording unit is used for recording the information parameter of described point-to-multi-point tunnel when the access control of described access control unit is passed through;
Message generation unit is used for setting up message according to the information parameter generation point-to-multi-point tunnel of described point-to-multi-point tunnel;
Branch Processing Unit is used for judging whether that need to set up message to described point-to-multi-point tunnel carries out branch process when the access control of described access control unit is passed through; Notify described message sending unit to set up message to the point-to-multi-point tunnel that at least one downstream node sends described point according to the branch process judged result.
18. such as source node equipment as described in claim 16 or 17, it is characterized in that described source node equipment also comprises:
The mistake processing unit is used for being received in that point-to-multi-point tunnel sets up that message and/or point-to-multi-point tunnel set up that the response message implementation makes a mistake and the error notification message that produces, and described error notification message is carried error coded; According to described error coded described error notification message is processed;
Delete cells be used for to send deletion/beta pruning request message, or the point-to-multi-point tunnel that does not carry nodal information to be deleted sets up message, and the node to be deleted in the described point-to-multi-point tunnel is deleted;
The grafting unit is used for sending grafting message, and the node that does not belong to described point-to-multi-point tunnel is added described point-to-multi-point tunnel.
19. an intermediary device between the leaf node in the source node of the point-to-multi-point tunnel of upstream and downstream, is characterized in that, comprising:
Intermediate node message sink unit is used for receiving point-to-multi-point tunnel and sets up message, or point-to-multi-point tunnel is set up response message;
The intermediate node information acquisition unit, be used for obtaining the point-to-multi-point tunnel that described intermediate node message sink unit receives and set up the point-to-multi-point tunnel information parameter that message is carried, described point-to-multi-point tunnel information parameter comprises: the source node hierarchy sequential address packet network HSAPN address of described point-to-multi-point tunnel, leaf node hierarchy sequential address packet network HSAPN address and the resource requirement of described point-to-multi-point tunnel;
Intermediate node building tunnel unit, after setting up message, described point-to-multi-point tunnel carries out the reservation of resource and the foundation of list item for receiving in described intermediate node message sink unit, or described intermediate node message sink unit receives and to carry out the reservation of resource and the foundation of list item after point-to-multi-point tunnel is set up response message, concrete, described point-to-multi-point tunnel is set up message and described point-to-multi-point tunnel, and to set up response message mutual, carries out the foundation of resource reservation and list item.
20. intermediary device is characterized in that as claimed in claim 19, described intermediary device also comprises:
Intermediate node access control unit is used for that the point-to-multi-point tunnel that described intermediate node message sink unit receives is set up message and carries out access control;
The intermediate node information recording unit is used for recording the information parameter of described point-to-multi-point tunnel when the access control of described intermediate node access control unit is passed through;
The intermediate node Dispatch Unit, described point-to-multi-point tunnel is set up message or point-to-multi-point tunnel is set up response message for transmitting;
Converge the unit, at least 2 point-to-multi-point tunnels that are used for receiving are set up response message and are converged, and the message after will converging sends to described intermediate node Dispatch Unit;
The intermediate node Branch Processing Unit is used for judging whether that need to set up message to point-to-multi-point tunnel carries out branch process when the access control of described intermediate node access control unit is passed through; Notify described intermediate node Dispatch Unit to send described point-to-multi-point tunnel at least one downstream node according to the branch process judged result and set up message.
21. such as intermediary device as described in claim 19 or 20, it is characterized in that described intermediary device also comprises:
Intermediate node error notification message elements is used for when setting up message and/or response message implementation and making a mistake, generating and sending error notification message described, carries error coded in the described error notification message.
22. a leaf node device is characterized in that, comprising:
Leaf node message sink unit, be used for receiving point-to-multi-point tunnel and set up message, described point-to-multi-point tunnel is set up and is carried the point-to-multi-point tunnel information parameter in the message, and described point-to-multi-point tunnel information parameter comprises: the source node hierarchy sequential address packet network HSAPN address of described point-to-multi-point tunnel, leaf node hierarchy sequential address packet network HSAPN address and the resource requirement of described point-to-multi-point tunnel;
The leaf node message sending unit is used for sending point-to-multi-point tunnel and sets up response message;
Leaf node building tunnel unit, be used for after described leaf node message sink unit receives described point-to-multi-point tunnel and sets up message, described point-to-multi-point tunnel is set up message and described point-to-multi-point tunnel, and to set up response message mutual, carries out the foundation of resource reservation and list item.
23. leaf node device as claimed in claim 22 is characterized in that, described leaf node device also comprises:
Leaf node error notification message elements is used for when setting up message and/or response message implementation and making a mistake, generating and sending error notification message described, carries error coded in the described error notification message.
24. a packet network mid point is characterized in that to the system that sets up of multipoint channel described system comprises:
Source node, be used for receiving point-to-multi-point tunnel and set up order, according to the described point-to-multi-point tunnel information parameter that carries in the described order, send point-to-multi-point tunnel and set up message, described point-to-multi-point tunnel is set up and is carried the point-to-multi-point tunnel information parameter in the message, and described point-to-multi-point tunnel information parameter comprises: the source node hierarchy sequential address packet network HSAPN address of described point-to-multi-point tunnel, leaf node hierarchy sequential address packet network HSAPN address and the resource requirement of described point-to-multi-point tunnel; Receive point-to-multi-point tunnel and set up response message, described point-to-multi-point tunnel is set up message and described point-to-multi-point tunnel, and to set up response message mutual, carries out the foundation of resource reservation and list item;
Leaf node, be used for receiving and set up message from the point-to-multi-point tunnel of described source node, described point-to-multi-point tunnel is set up message and described point-to-multi-point tunnel, and to set up response message mutual, carry out the foundation of resource reservation and list item, and set up response message to described source node transmission point-to-multi-point tunnel.
25. the packet network mid point is characterized in that to the system that sets up of multipoint channel as claimed in claim 24, described system also comprises:
At least one intermediate node between described source node and described leaf node, be used for to receive and to set up message from the point-to-multi-point tunnel of described source node, and described point-to-multi-point tunnel is set up message sends to described leaf node; Reception is set up response message from the point-to-multi-point tunnel of described leaf node, and described point-to-multi-point tunnel is set up response message sends to described source node; Described point-to-multi-point tunnel is set up message and described point-to-multi-point tunnel, and to set up response message mutual, carries out the reservation of resource and the foundation of list item.
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| CN200810081199XA CN101540711B (en) | 2008-03-17 | 2008-03-17 | Method, system and equipment for establishing point-to-multi-point tunnel in packet network |
| PCT/CN2009/070079 WO2009114998A1 (en) | 2008-03-17 | 2009-01-08 | Establishing method, system, and device for point to multi-point tunnel in packet network |
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| CN200810081199XA CN101540711B (en) | 2008-03-17 | 2008-03-17 | Method, system and equipment for establishing point-to-multi-point tunnel in packet network |
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| CN102594645B (en) * | 2011-11-25 | 2017-12-01 | 中兴通讯股份有限公司 | The method for dismounting and node device of traffic engineering tunnel in distributed network |
| CN108966039B (en) * | 2018-08-29 | 2021-09-21 | 迈普通信技术股份有限公司 | Multicast method and equipment |
| CN113010693B (en) * | 2021-04-09 | 2024-03-08 | 大连民族大学 | Knowledge graph intelligent question-answering method integrating pointer generation network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1338169A (en) * | 1999-01-14 | 2002-02-27 | 诺基亚网络有限公司 | Interception method and system |
| CN1809017A (en) * | 2005-01-19 | 2006-07-26 | 华为技术有限公司 | System and method of delivering multicast service system on mobile host computers |
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| CN1839590A (en) * | 2003-08-21 | 2006-09-27 | 摩托罗拉公司 | Method and apparatus for providing multimedia broadcast multicast service data to a subscriber to a multimedia broadcast multicast service |
| US20050220131A1 (en) * | 2004-03-31 | 2005-10-06 | Boris Ginzburg | Method and apparatus to multicast transmission |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1338169A (en) * | 1999-01-14 | 2002-02-27 | 诺基亚网络有限公司 | Interception method and system |
| CN1809017A (en) * | 2005-01-19 | 2006-07-26 | 华为技术有限公司 | System and method of delivering multicast service system on mobile host computers |
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