CN101394342A - Method and apparatus for implementing multicast authentication - Google Patents
Method and apparatus for implementing multicast authentication Download PDFInfo
- Publication number
- CN101394342A CN101394342A CNA2007101546431A CN200710154643A CN101394342A CN 101394342 A CN101394342 A CN 101394342A CN A2007101546431 A CNA2007101546431 A CN A2007101546431A CN 200710154643 A CN200710154643 A CN 200710154643A CN 101394342 A CN101394342 A CN 101394342A
- Authority
- CN
- China
- Prior art keywords
- multicast
- outlet
- address
- corresponding relation
- net
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The embodiment of the invention discloses a method for realizing multicast communication, which comprises an entry provider edge (PE) router receives multicast data; the entry PE router determines exit PE routers matching with the multicast data in accordance with the multicast addresses of the multicast data and the corresponding relations of the multicast addresses and the corresponding exit PE routers, wherein the correlation relations are set up in the entry PE router; and the entry PE router packages the multicast data by use of the addresses of the determined exit PE routers, and sends the packed multicast data to the determined exit PE routers through an intermediate transmission network in unicast way. The embodiment of the invention also discloses a device for realizing multicast communication. The method and the device provided in the embodiment of the invention can realize multicast communication by using multicast transition technology when the intermediate transmission network does not support multicast protocols, so as to dispense with the need for a large number of routers in the intermediate transmission network all supporting the multicast protocols, thereby reducing implementation cost.
Description
Technical field
The present invention relates to network communications technology field, relate in particular to the method and apparatus of realizing multicast transmission.
Background technology
Current, continuous increase along with network service user quantity, the network of the 4th traditional generation Internet protocol (IPv4) can't provide enough address space to use for the user, is just developed rapidly thus based on the next generation network of the 6th generation Internet protocol (IPv6).Yet, because the IPv4 network has had suitable scale, and current most of application program all is based on the IPv4 network and designs, uses, therefore, the IPv4 network will inevitably be in long-term existence still from now on, thus, currently formed the transition stage that traditional IPv4 network and follow-on IPv6 network progressively merge.In this transition stage, along with the IPv6 network is progressively discarded as the foundation gradually and the IPv4 network of backbone network, some IPv4 networks will occur and not be communicated with mutually, need carry out interconnected situation by the IPv6 transmission network of centre; Certainly, also can occur some IPv6 networks accordingly and not be communicated with mutually, need carry out interconnected situation by the IPv4 transmission network of centre.Will occur this moment: as the employed agreement (I-IP of intermediate conveyor net that is communicated with a plurality of peripheral client's bridge beams, Intra Network Internet Protocol) nets employed agreement (E-IP with peripheral client, Extra Network Internet Protocol) difference, that is to say, I-IP can occur and be IPv4 and E-IP is IPv6 or I-IP is IPv6 and E-IP is the situation of IPv4.Net employed agreement when different intermediate conveyor net and peripheral client, can cause different peripheral client's nets to be difficult to the problem that intercoms mutually by the intermediate conveyor net.
In order to solve the problem that above-mentioned transition stage might occur, multicast transitional technology based on address translation has been proposed in the prior art, the basic thought of this technology is: at inlet provider edge (PE) router place, multicast control message and the multicast data message of E-IP are translated as I-IP multicast control message and multicast data message respectively, wherein, pe router is the edge router between transmission network and the peripheral client net of mediating; Then, the I-IP multicast message after pe router will be translated transmits in the I-IP network, when this message arrives the outlet PE router, this message is reduced to corresponding E-IP multicast message again, and this message is continued to transmit in the E-IP network.By the I-IP multicast message after the described translation is transmitted, can on transmission network provider (P) router of I-IP network, set up I-IP multicast tree into the service of E-IP muticast data transmission in the I-IP network.The multicast tree of an E-IP is corresponding I-IP multicast tree in the I-IP network, and these two multicast tree come down to the different expression form that multicast tree presents in the network of different agreement.Wherein, the consolidation form of prearrange is adopted in described translation, makes each PE all can discern, thereby need not to consult mutually between each PE again.
Below above-mentioned translation process is described in detail.For example, when the agreement of middle transmission network operation is that IPv6 and the agreement of peripheral client's network operation are when being IPv4, the form of translation as shown in Figure 1, wherein, IPv6prefix is a specific I Pv6 address prefix, so that after pe router receives the IPv6 address of this prefix, can give corresponding recovery module and handle.This specific address prefix can obtain by address assignment, also can be by ISP (ISP) internal unity configuration, and the process of described translation and reduction is as follows:
Translation: to the destination network addresses part in IPv4 clean culture or the multicast routing table, shape such as a.b.c.d/M, wherein M is the bit length of mask.Can be transformed to pseudo-IPv6 address: 4over6prefix:a.b.c.d/len+M according to the 4over6 map addresses.Wherein, 4over6prefix/len is the proprietary prefix in pseudo-IPv6 address, and length is len, and the proprietary prefix in this puppet IPv6 address can obtain by address assignment, also can be distributed voluntarily and is managed by an ISP, so that all PE need not to consult just can discern.
Reduction: the 4over6 border router uses the proprietary prefix 4over6prefix/len in pseudo-IPv6 address that destination address is carried out prefix matching, if the prefix in the len prefix length is identical, judge that then this IPv6 route is pseudo-IPv6 route, and then carry out the route reduction according to the inverse transformation of 4over6 route conversion.
Though above-mentioned multicast transitional technology can be under the I-IP situation different with E-IP, realize that peripheral client Netcom crosses the intermediate conveyor net and carry out network service, but, this technology only can be applied to the situation that the intermediate conveyor net is supported unicast data transmission, carry out multicast transmission by the intermediate conveyor net if desired, the all-router that then needs to comprise in the intermediate conveyor net pe router and a large amount of P router is all supported multicast protocol, and in actual applications, often because fund, manpower, the reason of aspects such as technology, middle P router in the intermediate conveyor net is not supported multicast protocol, thereby make the multicast transitional technology under the intermediate conveyor net is not supported the situation of multicast protocol, not used, and then cause and to realize that under the I-IP situation different peripheral client Netcom crosses the intermediate conveyor net and carry out multicast transmission with E-IP.
In addition, in above-mentioned prior art, cross the intermediate conveyor net and carry out network service in order under the I-IP situation different, also to realize peripheral client Netcom with E-IP, need carry out the translation of different network protocol, when the E-IP protocol type is that IPv4 and I-IP protocol type are when being IPv6, become the IPv6 address of I-IP more or less freely the IPv4 address translation of E-IP, because the IPv6 address has 128, can constitute one 128 pseudo-IPv6 address jointly by 32 IPv4 address and one 96 specific IPv6 prefix combination during translation; But, when the E-IP protocol type is that IPv6 and I-IP protocol type are when being IPv4, because the IPv6 address is 128 and the IPv4 address is 32, unless add address negotiation mechanism between complicated PE, or be that protocol massages increases specific territory, otherwise 128 IPv6 address translation can't be become 32 IPv4 address, thereby cause this technical scheme to implement more complicated.In addition, because translation and reduction need be followed the rule that pre-establishes, and, the route of I-IP multicast control message in the I-IP network that is obtained by the E-IP translation need add extra addressing mechanism, the middle P router of I-IP transmission network also need correspondingly be supported this addressing mechanism, and these also all are that the realization of above-mentioned prior art has brought very big realization difficulty.
Summary of the invention
The purpose of the embodiment of the invention is: the method and apparatus of realizing multicast transmission is provided, even so that do not support at the intermediate conveyor net under the situation of multicast protocol, also can utilizes the multicast transitional technology to realize multicast transmission.
For achieving the above object, the embodiment of the invention provides following technical scheme:
A kind of method that realizes multicast transmission, this method comprises:
Inlet provider edge PE receiving multicast data;
Described entry PE is determined each outlet PE that is complementary with described multicast packet according to the multicast address of described multicast packet and the corresponding relation of multicast address of setting up and corresponding outlet PE on himself;
Described entry PE is utilized the address of determined described each outlet PE, described multicast packet is encapsulated respectively, and each multicast packet after will encapsulating is sent to determined described each outlet PE with mode of unicast by the intermediate conveyor net respectively.
A kind of device of realizing multicast transmission, this device comprises: peripheral client's net transport module, peripheral client's net processing module, intermediate conveyor net processing module, intermediate conveyor net transport module, multicast forwarding corresponding relation memory module, wherein:
Described peripheral client's net transport module is used for: receive the multicast packet that peripheral client's net client sends, and this multicast packet is sent to described peripheral client's net processing module;
Described peripheral client's net processing module is used for: when determining that the multicast packet that obtains being received needs that transmission network is transmitted between span centre, this multicast packet is sent to described intermediate conveyor net processing module;
Described intermediate conveyor net processing module is used for: the multicast address of storing according to the multicast address and the described multicast forwarding corresponding relation memory module of described multicast packet and the corresponding relation of outlet PE, definite each outlet PE that is complementary with described multicast packet, and, utilize the address of determined described each outlet PE, described multicast packet is encapsulated respectively;
Described intermediate conveyor net transport module is used for: each multicast packet with after the encapsulation of intermediate conveyor net processing module is sent to determined described each outlet PE with mode of unicast by the intermediate conveyor net respectively.
As seen, in embodiments of the present invention, by the multicast address on entry PE, set up and the corresponding relation of corresponding outlet PE, can determine its required corresponding outlet PE that sends at the multicast packet of current required transmission, and multicast packet is encapsulated according to the outlet PE of determining, the multicast packet of this encapsulation is sent to described outlet PE with mode of unicast respectively, thereby make and do not support under the situation of multicast protocol at the intermediate conveyor net, also can utilize the multicast transitional technology to realize multicast transmission, and in the specific implementation process, the pe router that only need be positioned at intermediate conveyor net and peripheral client's net network edge is supported multicast mechanism, do not need in the middle of the intermediate conveyor net a large amount of P routers all not support multicast protocol, thereby make the easier realization of this scheme and can better reduce the realization cost.
In addition, owing in the implementation procedure of the embodiment of the invention, need not to carry out the translation of different network protocol address, make that also the realization of the embodiment of the invention is simpler, thereby help the rapid popularization of multicast service.
Description of drawings
Fig. 1 shows the format translation that is adopted when carrying out the different network protocol translation in the prior art;
Fig. 2 is the method flow diagram of one embodiment of the invention;
Fig. 3 is for being implemented in the flow chart of the corresponding relation of setting up described multicast address and corresponding outlet PE on the entry PE in one embodiment of the invention;
Fig. 4 is for being implemented in the flow chart of deleting the corresponding relation of described multicast address and corresponding outlet PE on the entry PE in one embodiment of the invention;
Fig. 5 is schematic representation of apparatus that the embodiment of the invention provided.
Embodiment
Below, in conjunction with the accompanying drawings the embodiment of the invention is described in detail.
Referring to Fig. 2, in an embodiment of the present invention, realize that multicast transmission may further comprise the steps:
Step 201: inlet provider edge (PE) receiving multicast data;
Step 202: described entry PE is determined each outlet PE that is complementary with described multicast packet according to the multicast address of described multicast packet and the corresponding relation of multicast address of setting up and corresponding outlet PE on himself;
Step 203: described entry PE is utilized the address of determined described each outlet PE, described multicast packet is encapsulated respectively, and each multicast packet after will encapsulating is sent to determined described each outlet PE with mode of unicast by the intermediate conveyor net respectively.
In the preferred embodiment of the present invention, after described each outlet PE receives described multicast packet, also can be further the multicast packet of this encapsulation be carried out decapsulation, and the multicast packet that obtains after the decapsulation is further transmitted, until finishing transfer of data.
Wherein, entry PE adopts the multicast forwarding item to preserve, safeguard the corresponding relation of described multicast address and each outlet PE, for convenience of description, in following examples, is that example is illustrated the method that the embodiment of the invention was provided with the multicast forwarding item all; Certainly, in other embodiments of the invention, also can adopt other modes to preserve, safeguard the corresponding relation of described multicast address and outlet PE set, not influence realization of the present invention.
More clear in order to describe, below in conjunction with instantiation, client at peripheral client's net adds multicast group, withdraws from the situation of multicast group, the corresponding relation of to how being implemented on the entry PE setting up, delete described multicast address and outlet PE is described in detail, wherein, described inlet, outlet all are flow directions at muticast data transmission, be not at set up, message flow when safeguarding described corresponding relation to.
(1) client of peripheral client's net adds multicast group:
Referring to Fig. 3, in an embodiment of the present invention, add under the situation of multicast group in the client that peripheral client nets, be implemented in the corresponding relation of setting up described multicast address and corresponding outlet PE on the entry PE and may further comprise the steps:
Step 301: request adds peripheral client's net client of multicast group, adds (join) message by peripheral client's net to the request with its outlet PE that directly links to each other transmission E-IP form; Wherein, carry multicast address during this join message carries, this multicast address comprise the multicast source in the multicast group that described client will add the address, with and the address of the multicast group that will add; For explaining conveniently, (wherein, s represents the address of described multicast source for s, g) the described join message of expression, and g represents the address of described multicast group with join;
Step 302: the address s that described outlet PE determines to obtain described multicast source according to unicast routing table is arranged in the E-IP network islands that entry PE connected of the intermediate conveyor net other end, with described join (s, g) the I-IP address with this outlet PE encapsulates, and the message after will encapsulating is sent to the entry PE of the described other end by the intermediate conveyor net with mode of unicast;
Step 303: described entry PE receive join after the encapsulation (s, g) message carry out decapsulation to this message, and according to the multicast address in this message (s, g) carry out following processing:
If there has been described join (s, g) multicast address (s in, g) with the corresponding relation of corresponding outlet PE, then the information with the described outlet PE that obtains after the decapsulation is increased in the corresponding relation of described multicast address and corresponding outlet PE, thereby sets up the corresponding relation that this request adds pairing outlet PE of multicast group client and multicast address; When adopting the multicast forwarding item to preserve described corresponding relation, above-mentioned processing should be mutually: had described join (s if judge, g) multicast address (s in, g) corresponding multicast forwarding item entry ((s, g), PE}), then the I-IP address with the described outlet PE that obtains after the decapsulation is increased to the PE set of this forwarding entry { among the PE};
If current do not exist described join (s, g) (s g) with the corresponding relation of corresponding outlet PE, then sets up this corresponding relation to the multicast address on described entry PE; When adopting the multicast forwarding item to preserve described corresponding relation, above-mentioned processing should be mutually: if corresponding to described join (s, g) multicast address (s in, g), there is not corresponding with it multicast forwarding item, then on described entry PE, sets up and multicast address (s, g) Dui Ying multicast forwarding item entry ((s, g), and PE}), and with this multicast forwarding item PE set { the I-IP address among the PE} is initialized as the I-IP address of described outlet PE.
Further, when the client of peripheral client's net added multicast group, the embodiment of the invention also can further comprise the steps:
(s, g) message continues to be transmitted to next jumping client edge (CE) router to described entry PE, further finishes the registration process that described client adds multicast group by this ce router with described join.
(2) client of peripheral client's net withdraws from multicast group:
Referring to Fig. 4, in an embodiment of the present invention, the client-requested of netting peripheral client withdraws under the situation of multicast group, is implemented in the corresponding relation of deleting described multicast address and corresponding outlet PE on the entry PE and may further comprise the steps:
Step 401: peripheral client's net client of multicast group is withdrawed from request, by peripheral client's net to withdrawing from (quit) message with the request of its outlet PE that directly links to each other transmission E-IP form; Carry equally in this message and the similar multicast address of join message, this request withdraw from message be expressed as quit (s, g);
Step 402: the address s that described outlet PE determines to obtain described multicast source according to unicast routing table is arranged in the E-IP network islands that entry PE connected of the intermediate conveyor net other end, with described quit (s, g) the I-IP address with this outlet PE encapsulates, and the message after will encapsulating is sent to the entry PE of the described other end by the intermediate conveyor net with mode of unicast;
Step 403: described entry PE receive quit after the encapsulation (s, g) message carry out decapsulation to this message, according to the multicast address in this message (s, g) carry out following processing:
Search and obtain described quit (s, g) multicast address in (delete the information of the described outlet PE that obtains after the decapsulation in this corresponding relation by s, the g) corresponding relation of pairing multicast address and outlet PE, when adopting the multicast forwarding item to preserve described corresponding relation, above-mentioned processing should be mutually:
Search and obtain described quit (s, g) multicast address (s in, g) pairing multicast forwarding item entry ((s, g), PE}), the I-IP address of the described outlet PE that obtains after the decapsulation { is deleted the PE}, thereby deleted the corresponding relation that pairing outlet PE of multicast group client and multicast address are withdrawed from this request from the PE set of this forwarding entry; Further, if behind the I-IP address of the described outlet PE of PE set deletion, this PE set is empty set, then also can further delete described multicast forwarding item entry ((s, g), PE}), to save the memory space of PE.
In addition, in actual applications,, can be safeguarded in different ways for the corresponding relation of multicast address and corresponding outlet PE, below, be example to preserve described corresponding relation by the multicast forwarding item, three kinds of modes safeguarding corresponding relation are illustrated:
Mode one:
For each multicast address (s, g) a separately corresponding multicast forwarding item entry ((s, g), PE}), at this moment, any outlet PE can not receive not one's own data, still, this kind mode need be safeguarded more multicast forwarding item on entry PE;
Mode two:
Some a plurality of multicast address with common trait share a polymerization multicast forwarding item entry ((
*, g
*), PE}).Under the situation of the multicast forwarding item of the shared same polymerization of a plurality of multicast address, need not be each (s, g) safeguard an entry ((s separately, g), PE}), and be to use polymerization technique, make the different (s that a plurality of features are identical, g) share an entry, thereby the number of the multicast forwarding item that the minimizing pe router need be safeguarded has reduced the router burden.Wherein, the common trait that a plurality of multicast address have can for: the prefix of g address is identical, the prefix of s address is identical, certainly, also can be other common trait, does not influence realization of the present invention.
In this case, in above-mentioned steps 202, described entry PE according to the multicast address of multicast packet (s, g), determine the pairing polymerization multicast forwarding of this multicast address item entry ((
*, g
*), PE}), and { each PE among the PE} is defined as the described outlet PE that is complementary with multicast packet will to transmit a PE set; Thus, join multicast address (s, g) outlet PE of Dui Ying multicast group may receive entry PE issue join other multicast address (s ', g ') multicast packet of the outlet PE of Dui Ying multicast group, wherein, described (s ', g ') and (s, g) have common feature, shared same entry ((
*, g
*), PE}), thus join group (s, g) and the different outlet PE of (s ', g ') can receive all about (
*, g
*) data, outlet PE transmits to judge whether the multicast packet of receiving is redundant data according to the PIM of E-IP after receiving multicast packet, if then abandon this multicast packet.
Similarly, safeguard the multicast forwarding item if adopt this mode, then when the corresponding relation of foundation, the described multicast address of deletion and corresponding outlet PE, described entry PE is according to the multicast address (s in described join message or the quit message, g), determine the multicast forwarding item of the polymerization corresponding, and in the multicast forwarding item of this polymerization, finish the step of foundation, the described corresponding relation of deletion with this address.
Mode three:
In this mode, the shared multicast forwarding item entry of all multicast address ((
*,
*), PE}), at this moment, use the intermediate conveyor net of I-IP to be equivalent to a Local Area Network, entry PE need with multicast packet encapsulation back with mode of unicast send to entry ((
*,
*), PE}) and in all PE.
Adopt this mode, entry PE only need safeguard an entry ((
*,
*), PE}) the forwarding item.Concrete maintenance mode can for: use Border Gateway Protocol (BGP) message rather than join message safeguard this entry ((
*,
*), PE}), that is: the entry PE bgp neighbor PE that all are known joins and { among the PE} set, after entry PE is received multicast packet, sends to all bgp neighbor PE with mode of unicast.
This kind mode is suitable for that PE quantity is not a lot of situations in the I-IP transmission network, can effectively alleviate the burden of PE.
Below, the device that the embodiment of the invention provided is described in detail.
Referring to Fig. 5, the device of the realization multicast transmission that is provided in the embodiment of the invention comprises peripheral client's net transport module 501, peripheral client's net processing module 502, intermediate conveyor net processing module 503, intermediate conveyor net transport module 504, multicast forwarding corresponding relation memory module 505, wherein:
Described peripheral client's net transport module 501 is used for: receive the multicast packet that peripheral client's net client sends, and this multicast packet is sent to described peripheral client's net processing module 502;
Described peripheral client's net processing module 502 is used for: when determining that by the inquiry multicast routing table multicast packet that obtains being received needs that transmission network is transmitted between span centre, this multicast packet is sent to described intermediate conveyor net processing module 503;
Described intermediate conveyor net processing module 503 is used for: according to multicast address and the multicast address of described multicast forwarding corresponding relation memory module 505 storages and the corresponding relation of outlet PE of described multicast packet, definite each outlet PE that is complementary with described multicast packet, and, utilize the address of determined described each outlet PE, described multicast packet is encapsulated respectively;
Described intermediate conveyor net transport module 504 is used for: each multicast packet with after 503 encapsulation of intermediate conveyor net processing module is sent to determined described each outlet PE with mode of unicast by the intermediate conveyor net respectively.
In the preferred embodiment of the present invention, set up, delete described corresponding relation in order to be implemented in the multicast forwarding corresponding relation memory module 505, this device further comprises multicast transition control module 506, and at this moment, described intermediate conveyor net transport module 504 also is used for:
The request of the encapsulation that reception comes by intermediate conveyor net transmission adds or message is withdrawed from request, and with this message transmissions to described intermediate conveyor net processing module 503;
Described intermediate conveyor net processing module 503 also is used for: the request of described encapsulation is added or request is withdrawed from message and carried out decapsulation, and the message after the decapsulation is sent to peripheral client's net processing module 502 handle;
Described peripheral client's net processing module 502 also is used for: after the request of receiving decapsulation added or asks to withdraw from message, notice multicast transition control module 506 was handled;
Described multicast transition control module 506 is used for: add or ask according to described request and withdraw from the multicast address that message carries, upgrade the multicast address of storage in the described multicast forwarding corresponding relation memory module 505 and the corresponding relation of outlet PE.
In the above description, the device of described realization multicast transmission is corresponding to aforesaid entry PE, when this installs as outlet PE, described intermediate conveyor net processing module 503 also can be further used for the multicast packet of the encapsulation that receives from described intermediate conveyor net transport module 504 is carried out decapsulation, and the multicast packet after the decapsulation is sent to described peripheral client's net processing module 502;
The multicast packet of described peripheral client's net processing module 502 after by 501 pairs of described decapsulations of receiving of described peripheral client's net transport module further transmitted, and finishes the transmission of multicast packet at peripheral client's net.
Further, during as outlet PE, described peripheral client's net processing module 502 also can be further used at the device of described realization multicast transmission:
Unicast protocol according to peripheral client's net is transmitted, and judges whether the multicast packet after the described decapsulation of receiving is redundant data, if then abandon this multicast packet.
The above only is a 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 considered as protection scope of the present invention.
Claims (15)
1, a kind of method that realizes multicast transmission is characterized in that, this method comprises:
Inlet provider edge PE receiving multicast data;
Described entry PE is determined each outlet PE that is complementary with described multicast packet according to the multicast address of described multicast packet and the corresponding relation of multicast address of setting up and corresponding outlet PE on himself;
Described entry PE is utilized the address of determined described each outlet PE, described multicast packet is encapsulated respectively, and each multicast packet after will encapsulating is sent to determined described each outlet PE with mode of unicast by the intermediate conveyor net respectively.
2, method according to claim 1 is characterized in that, this method further comprises:
On described entry PE, set up the corresponding relation of described multicast address and corresponding outlet PE.
3, method according to claim 2 is characterized in that, the described specific implementation of setting up described corresponding relation on entry PE is:
Request adds peripheral client's net client of multicast group, joins message to sending request with its outlet PE that directly links to each other by peripheral client's net, wherein, carries multicast address during this request joins message;
Described outlet PE with described request join message with the encapsulation of the address of this outlet PE after, be sent to described entry PE with mode of unicast by the intermediate conveyor net;
The described request that described entry PE receives after the encapsulation joins message, and this message is carried out decapsulation, and carries out following processing according to the multicast address in this message:
If had the multicast address that described request joins message and the corresponding relation of corresponding outlet PE, then the information with the described outlet PE that obtains after the decapsulation is increased in the corresponding relation of described multicast address and corresponding outlet PE;
If the current multicast address that described request joins message and the corresponding relation of corresponding outlet PE of not existing then set up this corresponding relation on described entry PE.
4, method according to claim 1 is characterized in that, this method further comprises:
The corresponding relation of described multicast address of deletion and corresponding outlet PE on described entry PE.
5, method according to claim 4 is characterized in that, described specific implementation of deleting described corresponding relation on entry PE is:
Peripheral client's net client of multicast group is withdrawed from request, withdraws from message by peripheral client's net to sending request with its outlet PE that directly links to each other, and wherein, this request is withdrawed from and carried multicast address in the message;
Described outlet PE is sent to described entry PE with mode of unicast by the intermediate conveyor net after described request is withdrawed from the address encapsulation of message and this outlet PE;
Described entry PE is carried out decapsulation to the message that receives, and searches to obtain described request and withdraw from the pairing multicast address of multicast address in the message and the corresponding relation of outlet PE, and the information of the described outlet PE that obtains after the decapsulation is deleted in this corresponding relation.
6, according to any described method of claim 1～5, it is characterized in that the corresponding relation of described multicast address and corresponding outlet PE is:
The corresponding relation of a multicast address outlet PE corresponding with it.
7, according to any described method of claim 1～5, it is characterized in that the corresponding relation of described multicast address and corresponding outlet PE is:
The described multicast address that at least two multicast address with common trait are shared and the corresponding relation of corresponding outlet PE.
8, method according to claim 7 is characterized in that, each multicast packet after described entry PE will encapsulate further comprises after being sent to determined described each outlet PE with mode of unicast by the intermediate conveyor net respectively:
After described outlet PE is received described multicast packet, judge whether this multicast packet is redundant data, if then abandon this multicast packet.
9, according to any described method of claim 1～5, it is characterized in that the corresponding relation of described multicast address and corresponding outlet PE is:
The described multicast address that all multicast address are shared and the corresponding relation of corresponding outlet PE.
10, according to any described method of claim 1～5, it is characterized in that the corresponding relation of described multicast address and corresponding outlet PE is preserved by the multicast forwarding item.
According to any described method of claim 1～5, it is characterized in that 11, each multicast packet after described entry PE will encapsulate further comprises after being sent to determined described each outlet PE with mode of unicast by the intermediate conveyor net respectively:
The multicast packet of described outlet PE after to described encapsulation carries out decapsulation, and the multicast packet that obtains after the decapsulation is further transmitted.
12, a kind of device of realizing multicast transmission, it is characterized in that, this device comprises: peripheral client's net transport module, peripheral client's net processing module, intermediate conveyor net processing module, intermediate conveyor net transport module, multicast forwarding corresponding relation memory module, wherein:
Described peripheral client's net transport module is used for: receive the multicast packet that peripheral client's net client sends, and this multicast packet is sent to described peripheral client's net processing module;
Described peripheral client's net processing module is used for: when determining that the multicast packet that obtains being received needs that transmission network is transmitted between span centre, this multicast packet is sent to described intermediate conveyor net processing module;
Described intermediate conveyor net processing module is used for: the multicast address of storing according to the multicast address and the described multicast forwarding corresponding relation memory module of described multicast packet and the corresponding relation of outlet PE, definite each outlet PE that is complementary with described multicast packet, and, utilize the address of determined described each outlet PE, described multicast packet is encapsulated respectively;
Described intermediate conveyor net transport module is used for: each multicast packet with after the encapsulation of intermediate conveyor net processing module is sent to determined described each outlet PE with mode of unicast by the intermediate conveyor net respectively.
13, device according to claim 12 is characterized in that, this device further comprises the multicast transition control module, and described intermediate conveyor net transport module also is used for:
The request of the encapsulation that reception comes by intermediate conveyor net transmission adds or message is withdrawed from request, and with this message transmissions to described intermediate conveyor net processing module;
Described intermediate conveyor net processing module also is used for: the request of described encapsulation is added or request is withdrawed from message and carried out decapsulation, and the message after the decapsulation is sent to described peripheral client's net processing module handle;
Described peripheral client's net processing module also is used for: after the request of receiving decapsulation adds or asks to withdraw from message, notify described multicast transition control module to handle;
Described multicast transition control module is used for: add or the multicast address that message carries is withdrawed from request according to described request, upgrade the multicast address stored in the described multicast forwarding corresponding relation memory module and the corresponding relation of outlet PE.
14, according to claim 12 or 13 described devices, it is characterized in that, intermediate conveyor net processing module is further used for the multicast packet of the encapsulation that receives from described intermediate conveyor net transport module is carried out decapsulation, and the multicast packet after the decapsulation is sent to described peripheral client's net processing module;
Described peripheral client's net processing module is further used for: further transmit by the multicast packet of described peripheral client's net transport module after to the described decapsulation of receiving.
15, device according to claim 14 is characterized in that, peripheral client's net processing module is further used for:
Judge whether the multicast packet after the described decapsulation of receiving is redundant data, if then abandon this multicast packet.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710154643A CN101394342B (en) | 2007-09-20 | 2007-09-20 | Method and apparatus for implementing multicast authentication |
| PCT/CN2008/072449 WO2009039788A1 (en) | 2007-09-20 | 2008-09-22 | A method and apparatus of realizing multicast transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710154643A CN101394342B (en) | 2007-09-20 | 2007-09-20 | Method and apparatus for implementing multicast authentication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101394342A true CN101394342A (en) | 2009-03-25 |
| CN101394342B CN101394342B (en) | 2012-08-29 |
Family
ID=40494425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710154643A Active CN101394342B (en) | 2007-09-20 | 2007-09-20 | Method and apparatus for implementing multicast authentication |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101394342B (en) |
| WO (1) | WO2009039788A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104426680A (en) * | 2013-09-03 | 2015-03-18 | 华为技术有限公司 | Data transmission method, device and system |
| CN104954265A (en) * | 2014-03-25 | 2015-09-30 | 华为技术有限公司 | Method for sending multicast message and switch |
| WO2016115987A1 (en) * | 2015-01-20 | 2016-07-28 | 华为技术有限公司 | Method and apparatus for multicast forwarding |
| CN106453088A (en) * | 2016-09-28 | 2017-02-22 | 平安科技（深圳）有限公司 | Static routing configuration method and terminal |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108632678B (en) * | 2017-03-22 | 2023-03-24 | 中兴通讯股份有限公司 | Data transmission method, device and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1744574A (en) * | 2005-09-02 | 2006-03-08 | 杭州华为三康技术有限公司 | Method for multicasting message to traverse non multicasting network and its applied network system |
| CN1801783A (en) * | 2006-01-23 | 2006-07-12 | 北京交通大学 | Multi-domain multicast integration data distributing structure and method based on IP/MPLS/BGP |
| US20060209831A1 (en) * | 2005-03-21 | 2006-09-21 | Cisco Technology, Inc. | VPN services using address translation over an IPv6 network |
| CN101035057A (en) * | 2007-03-30 | 2007-09-12 | 华为技术有限公司 | Method for establishing the multicast share tree and data transfer method and communication network |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3722134B2 (en) * | 2003-06-04 | 2005-11-30 | 日本電気株式会社 | IP multicast distribution system, streaming data distribution method, and program thereof |
| CN100566282C (en) * | 2005-08-31 | 2009-12-02 | 杭州华三通信技术技术有限公司 | The Apparatus and method for of control transmitting multicast data |
| CN101009669B (en) * | 2007-01-05 | 2011-04-13 | 杭州华三通信技术有限公司 | A method and system and route device for transmitting the multicast message |
-
2007
- 2007-09-20 CN CN200710154643A patent/CN101394342B/en active Active
-
2008
- 2008-09-22 WO PCT/CN2008/072449 patent/WO2009039788A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060209831A1 (en) * | 2005-03-21 | 2006-09-21 | Cisco Technology, Inc. | VPN services using address translation over an IPv6 network |
| CN1744574A (en) * | 2005-09-02 | 2006-03-08 | 杭州华为三康技术有限公司 | Method for multicasting message to traverse non multicasting network and its applied network system |
| CN1801783A (en) * | 2006-01-23 | 2006-07-12 | 北京交通大学 | Multi-domain multicast integration data distributing structure and method based on IP/MPLS/BGP |
| CN101035057A (en) * | 2007-03-30 | 2007-09-12 | 华为技术有限公司 | Method for establishing the multicast share tree and data transfer method and communication network |
Non-Patent Citations (2)
| Title |
|---|
| 孙赛赛等: "支持DNS的IPv6/IPv4互通网关研究", 《福建电脑》 * |
| 聂菡: "IP组播技术", 《山西科技》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104426680A (en) * | 2013-09-03 | 2015-03-18 | 华为技术有限公司 | Data transmission method, device and system |
| US9838462B2 (en) | 2013-09-03 | 2017-12-05 | Huawei Technologies Co., Ltd. | Method, apparatus, and system for data transmission |
| CN104426680B (en) * | 2013-09-03 | 2018-03-16 | 华为技术有限公司 | Data transmission method, device and system |
| CN104954265A (en) * | 2014-03-25 | 2015-09-30 | 华为技术有限公司 | Method for sending multicast message and switch |
| US9929936B2 (en) | 2014-03-25 | 2018-03-27 | Huawei Technologies Co., Ltd. | Method for sending multicast packet and switch |
| CN104954265B (en) * | 2014-03-25 | 2018-06-15 | 华为技术有限公司 | Send the method and interchanger of multicast message |
| WO2016115987A1 (en) * | 2015-01-20 | 2016-07-28 | 华为技术有限公司 | Method and apparatus for multicast forwarding |
| US10476691B2 (en) | 2015-01-20 | 2019-11-12 | Huawei Technologies Co., Ltd. | Multicast forwarding method and apparatus |
| CN106453088A (en) * | 2016-09-28 | 2017-02-22 | 平安科技（深圳）有限公司 | Static routing configuration method and terminal |
| CN106453088B (en) * | 2016-09-28 | 2019-06-25 | 平安科技（深圳）有限公司 | A kind of static routing configuration method and terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101394342B (en) | 2012-08-29 |
| WO2009039788A1 (en) | 2009-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100372347C (en) | 4 over 6 tunnel packing and depacking method for extending boundary gateway protocol | |
| JP6544401B2 (en) | PACKET TRANSFER DEVICE, CONTROL DEVICE, COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND PROGRAM | |
| CN102546382B (en) | Method and system for realizing multicast in Internet protocol version 4 over Internet protocol version 6 (IPv4overIPv6) tunnel | |
| JP2004179811A (en) | Packet repeating device | |
| CN104954265B (en) | Send the method and interchanger of multicast message | |
| JP4436960B2 (en) | Packet communication system and mobile communication system | |
| CN1640058A (en) | Home agent optimization for handling mobile IP and static MPLS (multiprotocol label switching) | |
| CN104243427B (en) | The online moving method of virtual machine, data pack transmission method and equipment | |
| CN104429038A (en) | Route forwarding method, apparatus and system | |
| CN101394342B (en) | Method and apparatus for implementing multicast authentication | |
| JPWO2006103719A1 (en) | Multicast communication method | |
| CN103916253A (en) | Information transmission method and system on basis of information center network | |
| CN109936492A (en) | A kind of methods, devices and systems by tunnel transmission message | |
| CN102984070A (en) | Method for realizing data forwarding through unnumbered interface of Ethernet | |
| CN102724767A (en) | Virtual private network access method and device for mobile user | |
| CN107659930A (en) | A kind of AP connection control methods and device | |
| CN105933235B (en) | Data communications method and device | |
| CN103780492B (en) | The method and relevant device of message forwarding | |
| CN105591897B (en) | The MAC Address synchronous method and device of TRILL network | |
| CN106487677B (en) | Provider edge equipment and data forwarding method | |
| CN101127679A (en) | Method for Internet address expansion | |
| CN1960281B (en) | Virtual internet exchanging system having virtual line card and its transmission method | |
| CN101394298A (en) | Method and apparatus for establishing multipath transmission path, and implementing multicast transmission | |
| CN106936723A (en) | A kind of bluetooth router and method for routing based on tunneling mechanism | |
| CN101156354A (en) | Data processing method, network bridge and bridge network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |