CN102025626A - Method for forwarding multicast data message and provider edge - Google Patents
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Abstract
The invention provides a method for forwarding a multicast data message and a provider edge (PE). The method comprises that: the PE is provided to receive multicast data message sent by a customer edge (CE), and according to the multicast source internet protocol (IP) address, multicast IP address and a transmission-multiprotocol label switching (T-MPLS) instance number corresponding to a pseudowire (PW) channel, which are carried in the multicast data message, to search for a T-MPLS multicast forwarding table and duplicate or discard the multicast data message, wherein the T-MPLS multicast forwarding table comprises PW users to be duplicated; and according to the information table items of the PW, the PE performs two-layer tag header encapsulation on the duplicated multicast message, and sends the encapsulated multicast data message to PE on an opposite end. When the technical scheme is implemented, the multicast source the users do not want to receive can be shielded, or a certain multicast source of which the multicast data message is to be received can be accurately specified.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of multicast data forwarding method of message and provider's edge device.
Background technology
Transmission-multi protocol label exchange (Transmission-MultiProtocol Label Switching, T-MPLS) be a kind of of International Telecommunications Union (ITU-T) definition based on MPLS (MultiProtocol Label Switching, the multi protocol label exchange), connection-oriented grouping tranmission techniques, T-MPLS data forwarding face is the subclass of MPLS, and its data are based on that the T-MPLS label transmits.The application that T-MPLS is MPLS in transmitting net, it is simplified some sophisticated functions of MPLS data forwarding face, and has increased connection-oriented operation, management, safeguards (OAM) and protected functions such as recovery.
Multicast is between clean culture and broadcasting, and it had both needed to specify clear and definite single recipient unlike clean culture, also issues all recipients in the subnet unlike broadcasting.The sender only is responsible for producing a multicast packet, collect recipient's routing iinformation of multicast address correspondence by the network equipment, and finish duplicating and transmitting of multicast message in the place of needs, the task of multicast protocol be exactly be used for the managing multicast recipient adding and leave, and safeguard and upgrade multicast route (being multicast transmit tree).
If there are a plurality of users need receive same message in the T-MPLS network, adopt multicast protocol just can once finish duplicating of message, save the utilization rate of resource and reduction CPU (CPU).In the T-MPLS network, can only realize that according to multicast purpose medium access control (MAC) address (perhaps multicast ip address) and T-MPLS instance number multicast packet duplicates simply at present, can not mask the user and not want the multicast source that receives or can not accurately specify the multicast data message that receives certain multicast source.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of multicast data forwarding method of message and provider's edge device, do not want the multicast source that receives or accurately specify the multicast data message that receives certain multicast source to mask the user.
The invention provides a kind of multicast data forwarding method of message, this method comprises:
Provider's edge device (PE) receives the multicast data message of customer edge (CE), transmission-multi protocol label exchange (T-MPLS) instance number according to multicast source Internet protocol (IP) address, multicast ip address and pseudo-line (PW) the passage correspondence of above-mentioned multicast data message is searched the T-MPLS multicast forward table, and above-mentioned multicast data message duplicated or abandon, wherein, comprise the PW user that need duplicate in the above-mentioned T-MPLS multicast forward table; And
According to the information table of PW, the multicast data message after duplicating is carried out two layers of tag head encapsulation, and the multicast data message after will encapsulating sends to opposite end PE.
Preferably, above-mentioned multicast data forwarding method of message can have following characteristics:
Above-mentioned PE and above-mentioned opposite end PE set up pseudo-line (PW) passage.
Preferably, above-mentioned multicast data forwarding method of message also can have following characteristics:
Above-mentioned above-mentioned multicast data message is duplicated or abandons comprise:
Judged whether the PW multicast user,, then above-mentioned multicast data message has been copied to the PW user port if having, otherwise, above-mentioned multicast data message abandoned;
Above-mentioned information table according to PW, carry out two layers of tag head encapsulation to the multicast data message after duplicating and comprise:
Search the PW outlet information table of above-mentioned PW user port correspondence, the multicast data message after duplicating is carried out two layers of tag head encapsulation.
The present invention also provides a kind of multicast data forwarding method of message, and said method comprises:
The multicast data message of provider's edge device (PE) after to the encapsulation that receives carries out decapsulation, parses multicast source Internet protocol (IP) address, multicast ip address and pseudo-line (PW) label;
Transmission-multi protocol label exchange (T-MPLS) instance number according to multicast source IP address, multicast ip address and above-mentioned PW label correspondence is searched the T-MPLS multicast forward table, finish duplicating or abandoning of above-mentioned multicast data message, wherein, comprise the cip user that need duplicate in the above-mentioned T-MPLS multicast forward table; And
According to the information table of client instance interface (CIP), the multicast data message after duplicating is carried out the encapsulation of CIP information, and the multicast data message after will encapsulating sends on the customer edge (CE).
Preferably, above-mentioned multicast data forwarding method of message can have following characteristics:
Above-mentionedly finish duplicating or abandon and comprising of above-mentioned multicast data message:
Judged whether the CIP multicast user,, then above-mentioned multicast data message has been copied to the CIP user port if having, otherwise, above-mentioned multicast data message abandoned;
Above-mentioned information table according to CIP, carry out the encapsulation of CIP information to the multicast data message after duplicating and comprise:
Search the CIP outlet information table of above-mentioned CIP user port correspondence, the multicast data message after duplicating is carried out the encapsulation of CIP information.
The present invention also provides a kind of provider edge device (PE), above-mentioned PE, be used to receive the multicast data message of customer edge (CE), transmission-multi protocol label exchange (T-MPLS) instance number according to multicast source Internet protocol (IP) address, multicast ip address and pseudo-line (PW) the passage correspondence of above-mentioned multicast data message is searched the T-MPLS multicast forward table, and above-mentioned multicast data message duplicated or abandon, wherein, comprise the PW user that need duplicate in the above-mentioned T-MPLS multicast forward table; And, the multicast data message after duplicating is carried out two layers of tag head encapsulation, and the multicast data message after will encapsulating sends to opposite end PE according to the information table of PW.
Preferably, this provider's edge device can have following characteristics:
Above-mentioned PE also is used for setting up the PW passage with above-mentioned opposite end PE.
Preferably, this provider's edge device also can have following characteristics:
Above-mentioned PE is further used for having judged whether the PW multicast user, if having, then above-mentioned multicast data message is copied to the PW user port, otherwise, abandon above-mentioned multicast data message; And the PW outlet information table of searching above-mentioned PW user port correspondence, the multicast data message after duplicating is carried out two layers of tag head encapsulation.
The present invention also provides a kind of provider edge device (PE), and above-mentioned PE is used for the multicast data message after the encapsulation that receives is carried out decapsulation, parses multicast source Internet protocol (IP) address, multicast ip address and pseudo-line (PW) label; Transmission-multi protocol label exchange (T-MPLS) instance number according to multicast source IP address, multicast ip address and above-mentioned PW label correspondence is searched the T-MPLS multicast forward table, finish duplicating or abandoning of above-mentioned multicast data message, wherein, comprise the CIP user that need duplicate in the above-mentioned T-MPLS multicast forward table; And, the multicast data message after duplicating is carried out the encapsulation of CIP information, and the multicast data message after will encapsulating sends on the customer edge (CE) according to the information table of client instance interface (CIP).
Preferably, this provider's edge device can have following characteristics:
Above-mentioned PE is further used for having judged whether the CIP multicast user, if having, then above-mentioned multicast data message is copied to the CIP user port, otherwise, abandon above-mentioned multicast data message; And the CIP outlet information table of searching above-mentioned CIP user port correspondence, the multicast data message after duplicating is carried out the encapsulation of CIP information.
Above-mentioned multicast data forwarding method of message, upstream PE realizes duplicating and abandoning of multicast data message by searching the T-MPLS multicast forward table that comprises the multicast source IP address according to the source IP address in the multicast data message, multicast ip address and T-MPLS instance number; And the multicast data message after will encapsulating according to the information table of PW sends to downstream PE; Downstream PE to its decapsulation after, search the T-MPLS multicast forward table that comprises the multicast source IP address according to the source IP address that parses, multicast ip address and T-MPLS instance number, realize duplicating and abandoning of multicast data message, and according to the information table of CIP, multicast data message after the encapsulation is sent on the CE, do not want the multicast source that receives or accurately specify the multicast data message that receives certain multicast source thereby can mask the user.
Description of drawings
Fig. 1 flows to schematic diagram for what the multicast of realizing in the T-MPLS network of the present invention joined message;
Fig. 2 is for realizing the flow chart that multicast data message is transmitted on upstream PE in the T-MPLS network of the present invention;
Fig. 3 is for realizing the flow chart that multicast data message is transmitted on downstream PE in the T-MPLS network of the present invention.
Embodiment
For making purpose of the present invention, technical scheme and execution mode clearer, below in conjunction with the accompanying drawings and the specific embodiments technical scheme of the present invention is described in detail.
Basic ideas of the present invention: carry out duplicating or abandoning of multicast message at upstream PE equipment according to multicast source IP, multicast ip address and the T-MPLS instance number of multicast data message, carry out PW label, tunnel (Tunnel) label and two layers of encapsulation then; On centre tunnel p equipment, carry out the public network label forwarding; To downstream PE equipment, carry out label peeling, carry out duplicating of multicast message according to multicast source IP, multicast ip address and the T-MPLS instance number of multicast data message, carry out two layers of decapsulation.
The invention provides a kind of multicast data forwarding method of message, this method is finished by upstream PE, and this method comprises:
Provider's edge device (PE) receives the multicast data message of customer edge (CE), transmission-multi protocol label exchange (T-MPLS) instance number according to multicast source Internet protocol (IP) address, multicast ip address and pseudo-line (PW) the passage correspondence of above-mentioned multicast data message is searched the T-MPLS multicast forward table, and above-mentioned multicast data message duplicated or abandon, wherein, comprise the PW user that need duplicate in the above-mentioned T-MPLS multicast forward table; And
According to the information table of PW, the multicast data message after duplicating is carried out two layers of tag head encapsulation, and the multicast data message after will encapsulating sends to opposite end PE.
Above-mentioned with above-mentioned multicast data message duplicate or abandon can for: according to the result who searches the T-MPLS multicast forward table multicast data message is duplicated or abandons.
The present invention also provides a kind of multicast data forwarding method of message, and this method is finished by downstream PE, and this method comprises:
The multicast data message of provider's edge device (PE) after to the encapsulation that receives carries out decapsulation, parses multicast source Internet protocol (IP) address, multicast ip address and pseudo-line (PW) label;
Transmission-multi protocol label exchange (T-MPLS) instance number according to multicast source IP address, multicast ip address and above-mentioned PW label correspondence is searched the T-MPLS multicast forward table, finish duplicating or abandoning of above-mentioned multicast data message, wherein, comprise the CIP user that need duplicate in the above-mentioned T-MPLS multicast forward table; And
According to the information table of client instance interface (CIP), the multicast data message after duplicating is carried out the encapsulation of CIP information, and the multicast data message after will encapsulating sends on the customer edge (CE).
Above-mentioned finish above-mentioned multicast data message duplicate or abandon also can for: finish duplicating or abandoning of above-mentioned multicast data message according to the result who searches the T-MPLS multicast forward table.
Multicast data forwarding method of message provided by the invention, by setting up the forwarding-table item of identification multicast source and T-MPLS instance number, thereby the user in the T-MPLS network can real shield be fallen not want certain multicast source that receives or specify to receive certain specific multicast source, in PE equipment, form T-MPLS multicast forward table and the multicast user who comprises this specific multicast source, thereby realize duplicating or abandoning of T-MPLS multicast message.
As shown in Figure 1, flow to schematic diagram for what the forwarding multicasting of realizing in the T-MPLS network of the present invention joined message, wherein, PE1 is a upstream PE, and PE2 is a downstream PE.
Suppose certain specific multicast source that customer edge (CE) 2 users do not wish or only hope receives certain multicast group, CE2 user is by Internet Group Management Protocol (IGMP) notice of settlement provider's edge device (PE) 2, judge earlier on PE2 so whether the T-MPLS network edge device PE1 at place, specific multicast source sets up pseudo-line (PW) passage therewith, if no, then between PE1 and PE2 equipment, set up earlier a PW passage; Set up the T-MPLS multicast forward table according to the T-MPLS instance number of multicast source IP address, multicast ip address and this PW passage correspondence again; If wish to receive the data message of this specific multicast source IP address, then CE2 is added in this T-MPLS multicast forward table as the user, and then add relevant client instance interface (CIP) the message packaging information list item of CE2; If do not wish to receive the multicast data message of this specific multicast source IP address, then in this T-MPLS multicast forward table, do not add this CIP user.
Open the multicast inquiry device then on upstream equipment PE1, that PW port that allows receiving group join message becomes the multicast user; Similarly, between PE1 and PE2, setting up earlier a PW passage on the PE1, set up the T-MPLS multicast forward table according to the T-MPLS instance number of multicast source IP, multicast ip address and PW passage correspondence again, again PW user is joined in this T-MPLS multicast forward table, add relevant PW message packaging information list item again.
On the PE1 to all from then on the multicast received of PW port join message and analyze: if all CE users do not wish to receive the multicast data message of certain multicast source on downstream PE 2, in corresponding T-MPLS multicast forward table, just can not add this PW user so, also just can not be to this PW port duplicated multicast data message.
Particularly, the forwarding multicasting needed list item forming process that joins message may further comprise the steps in the T-MPLS network of the present invention:
Step 101, on PE1 and PE2 configuration PW information, set up the PW passage;
Step 102, send the IGMP multicast at multicast user's receiving terminal CE2 or CE3 to PE2 and join message, specify the message in the specific multicast source that needs certain multicast; Perhaps specify the message in the specific multicast source do not want to receive certain multicast;
Step 103, PE2 join message according to this IGMP multicast, use the T-MPLS instance number of multicast source IP address and multicast ip address and PW passage correspondence to form the T-MPLS multicast forward table, if wish the receiving multicast data message, then CE2 user or CE3 user are joined in this T-MPLS multicast forward table; Otherwise, CE2 user or CE3 user are not joined in this T-MPLS multicast forward table;
Step 104, according to the CIP information of CE2 or CE3 configuration, on PE2, form CIP encapsulation list item;
Step 105, on PE1 configuration multicast inquiry device, can receive that on PE1 the multicast of coming from PE2 equipment joins message;
Join message according to this multicast, use the T-MPLS instance number of multicast source IP address, multicast ip address and PW passage correspondence to form the T-MPLS multicast forward table; The multicast of analyzing all these multicast sources that this PW port receives joins message, if do not wish that the multicast that receives this multicast source joins message, then this PW user is not joined in the corresponding T-MPLS multicast forward table; Otherwise, this PW port is joined in the corresponding T-MPLS multicast forward table;
Step 106, go up the PW configuring ports according to PE1 and form PW user and encapsulate list item.
As shown in Figure 2, for realize the flow chart that multicast data message is transmitted in the T-MPLS network of the present invention on upstream PE, the step of the present invention from CE to the PE forwarding multicasting message comprises:
Judged whether the PW multicast user according to the result who searches the T-MPLS multicast forward table;
Want to receive the multicast data message of certain concrete multicast source for the user, in corresponding T-MPLS multicast forwarding list item, can message copied to the PW port with this PW user as duplicating the user;
Want the multicast data message of certain multicast source of shielding for the user, in corresponding T-MPLS multicast forwarding list item, PW can be duplicated the user and be changed to sky, promptly this multicast message can not copied to this PW port:
Wherein, the multicast data message structure after the encapsulation is as shown in table 1:
Multicast data message after table 1 encapsulation
Multicast data message after this encapsulation comprises PW label (Label), tunnel label (Tunnel Label), source MAC (SMAC) and purpose MAC information such as (DMAC).
As shown in Figure 3, for realize the flow chart that multicast data message is transmitted in the T-MPLS network of the present invention on downstream PE, the step of the present invention from PE to the CE forwarding multicasting message comprises:
The T-MPLS instance number of step 302, use user's multicast source IP address, multicast ip address and PW label correspondence is searched the T-MPLS multicast forward table;
Judged whether the CIP multicast user according to the result who searches the T-MPLS multicast forward table;
Want to receive the multicast data message of certain concrete multicast source for the user, in corresponding T-MPLS multicast forwarding list item, can message copied to CIP port (being CE user) with this CIP user as duplicating the user;
Want the multicast data message of certain multicast source of shielding for the user, in corresponding T-MPLS multicast forwarding list item, CIP can be duplicated the user and be changed to sky, promptly this multicast message can not copied to this CIP port (being CE user);
Need to prove that above-mentioned CIP encapsulates list item, CIP message packaging information list item is identical with the implication of CIP outlet information table; PW user encapsulates list item, PW message packaging information list item is identical with the implication of PW outlet information table.
Above-mentioned multicast data forwarding method of message, upstream PE realizes duplicating and abandoning of multicast data message by searching the T-MPLS multicast forward table that comprises the multicast source IP address according to the source IP address in the multicast data message, multicast ip address and T-MPLS instance number; And the multicast data message after will encapsulating according to the information table of PW sends to downstream PE; Downstream PE to its decapsulation after, search the T-MPLS multicast forward table that comprises the multicast source IP address according to the source IP address that parses, multicast ip address and T-MPLS instance number, realize duplicating and abandoning of multicast data message, and according to the information table of CIP, multicast data message after the encapsulation is sent on the CE, do not want the multicast source that receives or accurately specify the multicast data message that receives certain multicast source thereby can mask the user.
The present invention also provides a kind of provider edge device (PE), above-mentioned PE is used to receive the multicast data message of customer edge (CE), transmission-multi protocol label exchange (T-MPLS) instance number according to multicast source Internet protocol (IP) address, multicast ip address and pseudo-line (PW) the passage correspondence of above-mentioned multicast data message is searched the T-MPLS multicast forward table, and above-mentioned multicast data message duplicated or abandon, wherein, comprise the PW user that need duplicate in the above-mentioned T-MPLS multicast forward table; And, the multicast data message after duplicating is carried out two layers of tag head encapsulation, and the multicast data message after will encapsulating sends to opposite end PE according to the information table of PW.
Preferably, above-mentioned PE also is used for setting up the PW passage with above-mentioned opposite end PE.
Particularly, above-mentioned PE can be further used for having judged whether the PW multicast user, if having, then above-mentioned multicast data message is copied to the PW user port, otherwise, abandon above-mentioned multicast data message; And the PW outlet information table of searching above-mentioned PW user port correspondence, the multicast data message after duplicating is carried out two layers of tag head encapsulation.
Above-mentioned PE is a upstream PE, and the process that the multicast data message that this upstream PE sends CE is forwarded to downstream PE can repeat no more referring to Fig. 2 herein.
Upstream PE realizes duplicating and abandoning of multicast data message by searching the T-MPLS multicast forward table that comprises the multicast source IP address according to the source IP address in the multicast data message, multicast ip address and T-MPLS instance number; And the multicast data message after will encapsulating according to the information table of PW sends to downstream PE.
The present invention also provides a kind of provider edge device (PE), and above-mentioned PE is used for the multicast data message after the encapsulation that receives is carried out decapsulation, parses multicast source Internet protocol (IP) address, multicast ip address and pseudo-line (PW) label; Transmission-multi protocol label exchange (T-MPLS) instance number according to multicast source IP address, multicast ip address and above-mentioned PW label correspondence is searched the T-MPLS multicast forward table, finish duplicating or abandoning of above-mentioned multicast data message, wherein, comprise the CIP user that need duplicate in the above-mentioned T-MPLS multicast forward table; And, the multicast data message after duplicating is carried out the encapsulation of CIP information, and the multicast data message after will encapsulating sends on the customer edge (CE) according to the information table of client instance interface (CIP).
Particularly, above-mentioned PE can be further used for having judged whether the CIP multicast user, if having, then above-mentioned multicast data message is copied to the CIP user port, otherwise, abandon above-mentioned multicast data message; And the CIP outlet information table of searching above-mentioned CIP user port correspondence, the multicast data message after duplicating is carried out the encapsulation of CIP information.
Above-mentioned PE is a downstream PE, and the process that the multicast data message that this downstream PE sends upstream PE is forwarded to CE can repeat no more referring to Fig. 3 herein.
Downstream PE to the encapsulation after the multicast data message decapsulation after, search the T-MPLS multicast forward table that comprises the multicast source IP address according to the source IP address that parses, multicast ip address and T-MPLS instance number, realize duplicating and abandoning of multicast data message, and according to the information table of CIP, multicast data message after the encapsulation is sent on the CE, do not want the multicast source that receives or accurately specify the multicast data message that receives certain multicast source thereby can mask the user.
Above embodiment is only unrestricted in order to technical scheme of the present invention to be described, only with reference to preferred embodiment the present invention is had been described in detail.Those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention, and do not break away from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
1. a multicast data forwarding method of message is characterized in that, described method comprises:
Provider's edge device (PE) receives the multicast data message of customer edge (CE), transmission-multi protocol label exchange (T-MPLS) instance number according to multicast source Internet protocol (IP) address, multicast ip address and pseudo-line (PW) the passage correspondence of described multicast data message is searched the T-MPLS multicast forward table, and described multicast data message duplicated or abandon, wherein, comprise the PW user that need duplicate in the described T-MPLS multicast forward table; And
According to the information table of PW, the multicast data message after duplicating is carried out two layers of tag head encapsulation, and the multicast data message after will encapsulating sends to opposite end PE.
2. multicast data forwarding method of message according to claim 1 is characterized in that, described method also comprises:
Described PE and described opposite end PE set up pseudo-line (PW) passage.
3. multicast data forwarding method of message according to claim 1 and 2 is characterized in that, described described multicast data message is duplicated or abandons comprise:
Judged whether the PW multicast user,, then described multicast data message has been copied to the PW user port if having, otherwise, described multicast data message abandoned;
Described information table according to PW, carry out two layers of tag head encapsulation to the multicast data message after duplicating and comprise:
Search the PW outlet information table of described PW user port correspondence, the multicast data message after duplicating is carried out two layers of tag head encapsulation.
4. a multicast data forwarding method of message is characterized in that, described method comprises:
The multicast data message of provider's edge device (PE) after to the encapsulation that receives carries out decapsulation, parses multicast source Internet protocol (IP) address, multicast ip address and pseudo-line (PW) label;
Transmission-multi protocol label exchange (T-MPLS) instance number according to multicast source IP address, multicast ip address and described PW label correspondence is searched the T-MPLS multicast forward table, finish duplicating or abandoning of described multicast data message, wherein, comprise the cip user that need duplicate in the described T-MPLS multicast forward table; And
According to the information table of client instance interface (CIP), the multicast data message after duplicating is carried out the encapsulation of CIP information, and the multicast data message after will encapsulating sends on the customer edge (CE).
5. multicast data forwarding method of message according to claim 4 is characterized in that, describedly finishes duplicating or abandon and comprising of described multicast data message:
Judged whether the CIP multicast user,, then described multicast data message has been copied to the CIP user port if having, otherwise, described multicast data message abandoned;
Described information table according to CIP, carry out the encapsulation of CIP information to the multicast data message after duplicating and comprise:
Search the CIP outlet information table of described CIP user port correspondence, the multicast data message after duplicating is carried out the encapsulation of CIP information.
6. provider's edge device (PE) is characterized in that:
Described PE, be used to receive the multicast data message of customer edge (CE), transmission-multi protocol label exchange (T-MPLS) instance number according to multicast source Internet protocol (IP) address, multicast ip address and pseudo-line (PW) the passage correspondence of described multicast data message is searched the T-MPLS multicast forward table, and described multicast data message duplicated or abandon, wherein, comprise the PW user that need duplicate in the described T-MPLS multicast forward table; And, the multicast data message after duplicating is carried out two layers of tag head encapsulation, and the multicast data message after will encapsulating sends to opposite end PE according to the information table of PW.
7. provider according to claim 6 edge device is characterized in that:
Described PE also is used for setting up the PW passage with described opposite end PE.
8. according to claim 6 or 7 described provider edge devices, it is characterized in that:
Described PE is further used for having judged whether the PW multicast user, if having, then described multicast data message is copied to the PW user port, otherwise, abandon described multicast data message; And the PW outlet information table of searching described PW user port correspondence, the multicast data message after duplicating is carried out two layers of tag head encapsulation.
9. provider's edge device (PE) is characterized in that:
Described PE is used for the multicast data message after the encapsulation that receives is carried out decapsulation, parses multicast source Internet protocol (IP) address, multicast ip address and pseudo-line (PW) label; Transmission-multi protocol label exchange (T-MPLS) instance number according to multicast source IP address, multicast ip address and described PW label correspondence is searched the T-MPLS multicast forward table, finish duplicating or abandoning of described multicast data message, wherein, comprise the CIP user that need duplicate in the described T-MPLS multicast forward table; And, the multicast data message after duplicating is carried out the encapsulation of CIP information, and the multicast data message after will encapsulating sends on the customer edge (CE) according to the information table of client instance interface (CIP).
10. provider according to claim 9 edge device is characterized in that:
Described PE is further used for having judged whether the CIP multicast user, if having, then described multicast data message is copied to the CIP user port, otherwise, abandon described multicast data message; And the CIP outlet information table of searching described CIP user port correspondence, the multicast data message after duplicating is carried out the encapsulation of CIP information.
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| PCT/CN2011/078670 WO2012075832A1 (en) | 2010-12-09 | 2011-08-19 | Multicast data message forwarding method and provider edge device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012075832A1 (en) * | 2010-12-09 | 2012-06-14 | 中兴通讯股份有限公司 | Multicast data message forwarding method and provider edge device |
| WO2017028586A1 (en) * | 2015-08-19 | 2017-02-23 | 中国移动通信集团公司 | Service message multicast method and device |
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| WO2017028586A1 (en) * | 2015-08-19 | 2017-02-23 | 中国移动通信集团公司 | Service message multicast method and device |
| CN108809792A (en) * | 2017-04-26 | 2018-11-13 | 中兴通讯股份有限公司 | A kind of method and device of message data control |
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| CN102025626B (en) | 2014-12-10 |
| WO2012075832A1 (en) | 2012-06-14 |
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