CN104639446A - Method and device for obtaining multicasting source information - Google Patents
Method and device for obtaining multicasting source information Download PDFInfo
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- CN104639446A CN104639446A CN201510055736.3A CN201510055736A CN104639446A CN 104639446 A CN104639446 A CN 104639446A CN 201510055736 A CN201510055736 A CN 201510055736A CN 104639446 A CN104639446 A CN 104639446A
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Abstract
The invention provides a method and a device for obtaining multicasting source information. The method is applied to target transmission equipment. The method comprises the following steps: receiving a multicasting joining request sent by a member host, wherein the multicasting joining request comprises a required multicasting group address; when the multicasting source information corresponding to the multicasting group address is not found, writing the multicasting group address into a multicasting source request message; sending the multicasting source request message to an information server according to a pre-stored address of the information server to require the multicasting source information corresponding to the multicasting group address; receiving the multicasting source information corresponding to the multicasting group address, which is returned by the information server according to a multicasting source information table, so as to promote the target transmission equipment to send a corresponding multicasting joining message to a multicasting source, and lead the multicasting source information needed by a user to the member host from a multicasting source end.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of information about multicast source acquisition methods and device.
Background technology
Multiple PIM-SM (Protocol Independent Multicast-Sparse Mode in networking, the sparse mode of Protocol Independent Multicast) can according to MSDP (Multicast Source Discovery Protocol between territory, Multicast Source Discovery Protocol) set up MSDP peer relationship, thus realize interconnecting between multiple pim-sm domain.Multicast source regularly can send SA (Source Active, active multicast source) message usually, has information about multicast source on the pim-sm domain of MSDP peer relationship to upgrade each and multicast source.If have new member host in certain pim-sm domain to RP (the Rendezvous Point in this pim-sm domain, Rendezvous Point) ask information about multicast source, and on this RP not this information about multicast source time, then need target RP to obtain this information about multicast source by sending SA request message to the source RP at information about multicast source place.
In prior art, when target RP and source RP belongs to non-conterminous pim-sm domain respectively and there is not direct MSDP peer relationship, target RP is sent SA request message and will be forwarded by middle RP.If the configuration rule in middle RP does not allow to transmit this SA request message, or when forbidding the study to some multicast packet source, group, this SA request message then cannot arrive source RP, therefore cause target RP to obtain information about multicast source, and then this member host cannot join this multicast group.
Summary of the invention
In view of this, the invention provides a kind of information about multicast source acquisition methods and device solves the problem that target RP cannot obtain information about multicast source.
Particularly, the present invention is achieved through the following technical solutions:
A kind of information about multicast source acquisition methods, described method is applied to target forwarding unit, described target forwarding unit is connected with information server, information about multicast source table set up in advance by described information server, described information about multicast source table comprises the information about multicast source corresponding with the multicast source in the non-conterminous pim-sm domain of described target forwarding unit, and described method comprises:
The multicast receiving member host's initiation joins request, and described multicast joins request and comprises asked multicast group address;
When not finding information about multicast source corresponding to described multicast group address, by described multicast group address write multicast source request message;
According to the address of the described information server prestored, send multicast source request message, to ask the information about multicast source that described multicast group address is corresponding to described information server;
Receive the information about multicast source that described multicast group address that described information server returns according to described information about multicast source table is corresponding.
Further, described method also comprises:
After Multicast Source Discovery Protocol MSDP peer relationship set up by source forwarding unit and described information server, receive the address of the described information server that described source forwarding unit sends;
Preserve the address of described information server.
Further, after preserving the address of described information server, described method also comprises:
For the address of described information server arranges ageing time;
When the address aging of described information server, or when receiving the address of new information server that described source forwarding unit sends, delete the address of described information server.
Further, described method also comprises:
When described target forwarding unit does not receive information about multicast source corresponding to described multicast group address that described information server returns, send described multicast source request message according to Fixed Time Interval to described information server, to obtain described information about multicast source.
A kind of information about multicast source acquisition methods, described method is applied to information server, described information server is connected with target forwarding unit, information about multicast source table set up in advance by described information server, described information about multicast source table comprises the information about multicast source corresponding with the multicast source in the non-conterminous pim-sm domain of described target forwarding unit, and described method comprises:
Receive described target forwarding unit send multicast source request message, carry in described multicast source request message member host join request to the multicast that described target forwarding unit is initiated in multicast group address;
Obtain the multicast group address in described multicast source request message, in described information about multicast source table, search information about multicast source corresponding to described multicast group address;
Described information about multicast source is sent to described target forwarding unit.
Further, describedly set up information about multicast source table in advance, comprising:
MSDP peer relationship is set up with the source forwarding unit of described multicast source;
After receiving the information about multicast source message of source forwarding unit transmission, obtain the multicast group address of described information about multicast source and the correspondence of carrying in information about multicast source message;
Described information about multicast source and multicast group address are added in information about multicast source table.
Based on identical design, the present invention also provides a kind of information about multicast source acquisition device, described application of installation is in target forwarding unit, described target forwarding unit is connected with information server, information about multicast source table set up in advance by described information server, described information about multicast source table comprises the information about multicast source corresponding with the multicast source in the non-conterminous pim-sm domain of described target forwarding unit, and described device comprises:
Request reception unit, the multicast sent for receiving member host joins request, and described multicast joins request and comprises asked multicast group address;
Address writing unit, for when not finding information about multicast source corresponding to described multicast group address, by described multicast group address write multicast source request message;
Packet sending unit, for the address according to the described information server prestored, sends multicast source request message, to ask the information about multicast source that described multicast group address is corresponding to described information server;
Information receiving unit, for receiving information about multicast source corresponding to described multicast group address that described information server returns according to described information about multicast source table.
Further, described device also comprises:
Address accept unit, for after source forwarding unit and described information server set up MSDP peer relationship, receives the address of the described information server that described source forwarding unit sends;
Address storage unit, for preserving the address of described information server.
Further, described device also comprises:
Address setting unit, for arranging ageing time for the address of described information server;
Address delete cells, for when the address aging of described information server, or when receiving the address of the new information server that described source forwarding unit sends, deletes the address of described information server.
Further, described device also comprises:
Timed sending unit, during for not receiving information about multicast source corresponding to described multicast group address that described information server returns at described target forwarding unit, described multicast source request message is sent to described information server, to obtain described information about multicast source according to Fixed Time Interval.
A kind of information about multicast source acquisition device, described application of installation is in information server, and described information server is connected with target forwarding unit, and described device comprises:
List item sets up unit, and for setting up information about multicast source table in advance, described information about multicast source table comprises the information about multicast source corresponding with the multicast source in the non-conterminous pim-sm domain of described target forwarding unit;
Message receiving element, for receive described target forwarding unit send multicast source request message, carry in described multicast source request message member host join request to the multicast that described target forwarding unit is initiated in multicast group address;
Information searching unit, for obtaining the multicast group address in described multicast source request message, searches information about multicast source corresponding to described multicast group address in described information about multicast source table;
Information transmitting unit, for being sent to described target forwarding unit by described information about multicast source.
Further, described list item sets up unit, specifically comprises:
Relation sets up subelement, for setting up MSDP peer relationship with the source forwarding unit at described information about multicast source place;
Acquisition of information subelement, after receiving information about multicast source message that source forwarding unit sends, obtains the multicast group address of described information about multicast source and the correspondence of carrying in information about multicast source message;
Information adds subelement, for described information about multicast source and multicast group address being added in information about multicast source table.
As can be seen here, the information server that utilization of the present invention is connected with target forwarding unit is to preserve information about multicast source, when target forwarding unit request information about multicast source, by the multicast source request message sent to information server, thus obtain the information about multicast source of asking, and then impel target forwarding unit to send corresponding multicast to multicast source to join message, the information about multicast source that user needs is guided to member host from multicast source.
Accompanying drawing explanation
Fig. 1 is the group-network construction figure in a kind of illustrative embodiments of the present invention;
Fig. 2 is the process chart of a kind of information about multicast source acquisition methods in a kind of illustrative embodiments of the present invention;
Fig. 3 is the process chart of the another kind of information about multicast source acquisition methods in a kind of illustrative embodiments of the present invention;
Fig. 4 is the network architecture schematic diagram in a kind of illustrative embodiments of the present invention;
Fig. 5 is the interaction diagrams that in a kind of illustrative embodiments of the present invention, information about multicast source obtains;
Fig. 6 a is the hardware structure diagram of the target forwarding unit at information about multicast source acquisition device place in a kind of illustrative embodiments of the present invention;
Fig. 6 b is the building-block of logic of a kind of information about multicast source acquisition device in a kind of illustrative embodiments of the present invention;
Fig. 7 a is the hardware structure diagram of the information server at information about multicast source acquisition device place in a kind of illustrative embodiments of the present invention;
Fig. 7 b is the building-block of logic of the another kind of information about multicast source acquisition device in a kind of illustrative embodiments of the present invention.
Embodiment
Refer to Fig. 1, the group-network construction figure in a kind of illustrative embodiments of the present invention, wherein there is MSDP peer relationship in the PIM-SM1 territory at multicast source devices place and PIM-SM3 territory, there is MSDP peer relationship in PIM-SM2 territory and PIM-SM3 territory, therefore the target forwarding unit RP2 in PIM-SM2 territory by the intermediate forwarding devices RP3 in PIM-SM3 territory, can carry out cross-domain communication with source forwarding unit RP1.RP1 can regularly send SA message usually, to upgrade the information about multicast source on RP2 and RP3.
When there being new member host's request to add multicast group in PIM-SM2 territory, the multicast that target forwarding unit RP2 can receive this member host transmission joins request, and object is the information about multicast source of request corresponding to this multicast group.If not this information about multicast source on target forwarding unit RP2, then target forwarding unit RP2 needs to obtain this information about multicast source by sending SA request message to the source forwarding unit RP1 at information about multicast source place.Owing to there is not direct MSDP peer relationship between target forwarding unit RP2 and source forwarding unit RP1, therefore target forwarding unit RP2 transmission SA request message will be forwarded by the intermediate forwarding devices RP3 in PIM-SM3 territory.If the configuration rule of intermediate forwarding devices RP3 does not allow to transmit this SA request message, or when forbidding to some multicast packet source, group study, this SA request message then cannot arrive source forwarding unit RP1, therefore cause target forwarding unit RP2 to obtain information about multicast source, and then make this member host cannot join this multicast group.
In order to solve the problem, the information server that utilization of the present invention is connected with target forwarding unit is to preserve information about multicast source, when target forwarding unit request information about multicast source, by the multicast source request message sent to information server, thus obtain the information about multicast source of asking, and then impel target forwarding unit to send corresponding multicast to multicast source to join message, the information about multicast source that user needs is guided to member host from multicast source.
Please refer to Fig. 2, it is a kind of information about multicast source acquisition methods process chart in a kind of illustrative embodiments of the present invention, the method is applied to target forwarding unit, this target forwarding unit is connected with information server, this information server can set up information about multicast source table in advance, wherein this information about multicast source table comprises the information about multicast source corresponding with the multicast source in the non-conterminous pim-sm domain of described target forwarding unit, and described method comprises:
The multicast that step 201, target forwarding unit receive member host's initiation joins request, and described multicast joins request and comprises asked multicast group address;
Member host generally includes the multicast group address of this multicast group in joining message to the multicast that target forwarding unit is initiated.Target forwarding unit receives after this multicast joins message, and can to join message this multicast group address of middle extraction from this multicast.
Step 202, when target forwarding unit does not find information about multicast source corresponding to described multicast group address, by described multicast group address write multicast source request message;
After target forwarding unit obtains this multicast group address, first in the information about multicast source table self preserved, search information about multicast source corresponding to this multicast group address, if find, the multicast source to correspondence sends corresponding multicast and joins message, and the information about multicast source that user needs is guided to member host from multicast source this information about multicast source is sent to member host; If do not find, then by described multicast group address write multicast source request message.
Step 203, target forwarding unit, according to the address of the described information server prestored, send multicast source request message, to ask the information about multicast source that described multicast group address is corresponding to described information server;
Wherein, target forwarding unit by the address of above-mentioned multicast source request message according to information server, can send multicast source request message to this information server.
In optional embodiment of the present invention, usual source forwarding unit can select to have with target forwarding unit annexation have store and the equipment of forwarding capability as information server.Those skilled in the art should be understood that, described information server can be the independently network equipment, also can be certain part of the RP existed with source forwarding unit in the pim-sm domain of MSDP peer relationship, such as the part of interface in RP is carried out opening setting, make this RP can be received the information about multicast source of source forwarding unit transmission by MSDP peer relationship, also the RP in other territory can be made by open interface can be had access to the information about multicast source of buffer memory in this RP, and embodiment the present invention do not limit.
Source forwarding unit, after setting up MSDP peer relationship with this information server, can regularly send up-to-date information about multicast source to the information server and intermediate forwarding devices that self there is MSDP peer relationship.And source forwarding unit can also utilize the intermediate forwarding devices of the MSDP peer relationship set up, the address of information server is sent to and receives on target forwarding unit.
The address of this information server is kept at this locality after receiving the address of the information server that source forwarding unit sends by target forwarding unit.In preferred embodiments, target forwarding unit can also arrange ageing time for local information server address of preserving.Timing when preserving from this information server address, when timer arrives ageing time, or when receiving new information server address corresponding to this multicast group address that source forwarding unit sends, the address of this information server can be deleted by this target forwarding unit, thus can improve the effective rate of utilization of memory.
Step 204, target forwarding unit receive information about multicast source corresponding to described multicast group address that described information server returns according to described information about multicast source table.
When target forwarding unit receives information about multicast source corresponding to the described multicast group address that returns after information server makes reference information about multicast source table, corresponding multicast can be sent to multicast source to join message, the information about multicast source that user needs is guided to member host from multicast source, adds this multicast group to make member host according to this information about multicast source.
As can be seen here, the information server that utilization of the present invention is connected with target forwarding unit is to preserve information about multicast source, when target forwarding unit request information about multicast source, by the multicast source request message sent to information server, thus obtain the information about multicast source of asking, impel target forwarding unit to send corresponding multicast to multicast source to join message, the information about multicast source that user needs is guided to member host from multicast source.
In optional embodiment of the present invention, when not this target forwarding unit information about multicast source of asking and when cannot feed back on information server, this target forwarding unit can send above-mentioned multicast source request message according to Fixed Time Interval to described information server, until can obtain described information about multicast source.Therefore before this member host adds this multicast group, can avoid repeating to create multicast source request message, thus alleviate equipment operation burden.
Please refer to Fig. 3, it is the another kind of information about multicast source acquisition methods process chart in a kind of illustrative embodiments of the present invention, the method is applied to information server, described information server is connected with target forwarding unit, information about multicast source table set up in advance by described information server, described information about multicast source table comprises the information about multicast source corresponding with the multicast source in the non-conterminous pim-sm domain of described target forwarding unit, and described method comprises:
Step 301, information server receive described target forwarding unit send multicast source request message, carry in described multicast source request message member host join request to the multicast that described target forwarding unit is initiated in multicast group address;
Step 302, information server obtain the multicast group address in described multicast source request message, search information about multicast source corresponding to described multicast group address in the information about multicast source table prestored;
In optional embodiment of the present invention, after information server and source forwarding unit set up MSDP peer relationship, the information about multicast source message that source forwarding unit sends can be received.Information server, by resolving this information about multicast source message, obtains the multicast group address of its information about multicast source carried and correspondence, then described information about multicast source and multicast group address is added in local information about multicast source table.
After information server receives multicast source request message, the multicast group address in this multicast source request message can be obtained, then with this multicast group address for index, in the information about multicast source table of this locality, search information about multicast source corresponding to this multicast group address.
Described information about multicast source is sent to described target forwarding unit by step 303, information server.
After information server finds information about multicast source, this information about multicast source is added in response message, and send this response message to this target forwarding unit.
It should be noted that, the information server in the present embodiment can refer to the one or more information servers be connected with target forwarding unit.If there is multiple information server in networking, the Information Management Strategy that keeper can be arranged on source forwarding unit, above-mentioned multiple information server is divided the work, then different informations about multicast source can be sent to corresponding information server according to Information Management Strategy by source forwarding unit, then the address of each information server is sent on target forwarding unit, to make target forwarding unit according to different information server addresses, to the information about multicast source needed for different information server requests, thus the processing load on dispersed information server.
Described Information Management Strategy can be arranged according to user demand usually, for example, suppose to be provided with 2 information servers in this networking, and the configuration of these 2 information servers and performance is all identical.In order to improve the stability of a system, one of them information server can be set to main information server by keeper, is used for as forwarding unit provides service; And to arrange another information server be standby message server, be used for backing up the information about multicast source that main information server stores, when breaking down with the main information server of box lunch, main information server can be replaced to continue as forwarding unit provides service, thus can improve the stability of this system.If or the load of sharing on information server, then the forwarding unit in this networking can be divided into A group and B group according to the mode such as the network segment or pim-sm domain by keeper in advance, and the forwarding unit that one of them information server is responsible in A group is set service is provided, the forwarding unit that another information server is responsible in B group provides service, thus the load can shared on information server, improve treatment effeciency.The exemplary illustration of above lifted Information Management Strategy just to information server management method in the present invention, specific embodiments can be determined according to the actual requirements, does not limit herein.As can be seen here, the information server that utilization of the present invention is connected with target forwarding unit is to preserve information about multicast source, when target forwarding unit request information about multicast source, by the multicast source request message sent to information server, thus obtain the information about multicast source of asking, and then impel target forwarding unit to send corresponding multicast to multicast source to join message, the information about multicast source that user needs is guided to member host from multicast source.
For making object of the present invention, technical scheme and advantage clearly understand, below based on the network architecture of Fig. 4, the solution of the present invention is described in further detail.
Wherein, on Fig. 1 network architecture basis, in this networking, add information server, this information server and RP1, RP2, RP3 connect respectively, and MSDP peer relationship set up by the PIM-SM1 at multicast source place and information server.When the member host's request in PIM-SM2 adds the multicast group at multicast source place, the reciprocal process of RP2 and information server as shown in Figure 5.
RP2 receives the information server address ip A that RP1 sends, and arranges ageing time for information server address ip A, such as 60 seconds, to be then kept at by IPA in the address list of this locality and to open age timer.After the age timer that IPA is corresponding arrives ageing time, IPA can delete by RP2 from this address list.
When the multicast that RP2 receives member host's initiation joins request, multicast group address IPG during acquisition multicast joins request, and in the information about multicast source of this locality, search information about multicast source corresponding to this multicast group address IPG, if do not find, then this multicast group address IPG is write in multicast source request message.RP2 finds the information server address ip A that this multicast group address IPG is corresponding from the address list of this locality, then by the information server that this multicast source request message sends to IPA corresponding, as arrow in Fig. 4 1. shown in.
In addition in this side of information server, after setting up MSDP peer relationship with multicast source, information server can receive the information about multicast source message that RP1 sends.The IP address ip S of the multicast group address IPG that the multicast source carried in information server acquisition information about multicast source message is corresponding and multicast source.Described multicast source address IPS and multicast group address IPG is saved in local information about multicast source table by information server.
When information server receives the multicast source request message of this RP2 transmission, obtain the multicast group address IPG in multicast source request message, be index with IPG in the information about multicast source table prestored, search the information about multicast source that IPG is corresponding, thus obtain multicast source address IPS.Then described information about multicast source IPS is fed back to RP2 by information server, as arrow in Fig. 4 2. shown in.
After RP2 receives this information about multicast source IPS, corresponding multicast can be sent to multicast source and join message, and then the information about multicast source that user needs is guided to member host from multicast source.
For RP1, PIM-SM1 and PIM-SM3, PIM-SM2 and the PIM-SM3 at its place still have MSDP peer relationship, and therefore RP1 can also regularly send SA message to RP2, RP3.Because RP2, RP3 can obtain information about multicast source from information server, without the need to carrying information about multicast source in the SA message of therefore RP1 transmission, only send data message, thus improve the utilance of networking bandwidth.
As can be seen here, the information server that utilization of the present invention is connected with target forwarding unit is to preserve information about multicast source, when target forwarding unit request information about multicast source, by the multicast source request message sent to information server, thus obtain the information about multicast source of asking, and then impel target forwarding unit to send corresponding multicast to multicast source to join message, the information about multicast source that user needs is guided to member host from multicast source.
Based on identical design, the present invention also provides a kind of information about multicast source acquisition device, and described device can pass through software simulating, also can be realized by the mode of hardware or software and hardware combining.For software simulating, information about multicast source acquisition device of the present invention, as the device on a logical meaning, is run after being read by computer program instructions corresponding in memory by the CPU of its place network forwarding equipment to form.
Please refer to Fig. 6 a and Fig. 6 b, it is a kind of information about multicast source acquisition device 600 in a kind of illustrative embodiments of the present invention, described application of installation is in target forwarding unit, information about multicast source table set up in advance by described information server, described information about multicast source table comprises the information about multicast source corresponding with the multicast source in the non-conterminous pim-sm domain of described target forwarding unit, and the basic running environment of described device comprises CPU, memory and other hardware, from logic level, described device 600 comprises:
Request reception unit 601, the multicast sent for receiving member host joins request, and described multicast joins request and comprises asked multicast group address;
Address writing unit 602, for when not finding information about multicast source corresponding to described multicast group address, by described multicast group address write multicast source request message;
Packet sending unit 603, for the address according to the described information server prestored, sends multicast source request message, to ask the information about multicast source that described multicast group address is corresponding to described information server;
Information receiving unit 604, for receiving information about multicast source corresponding to described multicast group address that described information server returns according to described information about multicast source table.
Optionally, described device 600 also comprises address accept unit 605, for after source forwarding unit and described information server set up Multicast Source Discovery Protocol MSDP peer relationship, receives the address of the described information server that described source forwarding unit sends;
Address storage unit 606, for preserving the address of described information server.
Optionally, described device 600 also comprises address setting unit 607, for arranging ageing time for the address of described information server;
Address delete cells 608, for when the address aging of described information server, or when receiving the address of the new information server that described source forwarding unit sends, deletes the address of described information server.
Optionally, described device 600 also comprises timed sending unit 609, during for not receiving information about multicast source corresponding to described multicast group address that described information server returns at described target forwarding unit, described multicast source request message is sent to described information server, to obtain described information about multicast source according to Fixed Time Interval.
Please refer to Fig. 7 a and Fig. 7 b, it is the another kind of information about multicast source acquisition device 700 in a kind of illustrative embodiments of the present invention, described application of installation is in information server, described information server is connected with target forwarding unit, the basic running environment of described device comprises CPU, memory and other hardware, from logic level, described device 700 comprises:
List item sets up unit 701, and for setting up information about multicast source table in advance, described information about multicast source table comprises the information about multicast source corresponding with the multicast source in the non-conterminous pim-sm domain of described target forwarding unit;
Message receiving element 702, for receive described target forwarding unit send multicast source request message, carry in described multicast source request message member host join request to the multicast that described target forwarding unit is initiated in multicast group address;
Information searching unit 703, for obtaining the multicast group address in described multicast source request message, searches information about multicast source corresponding to described multicast group address in described information about multicast source table;
Information transmitting unit 704, for being sent to described target forwarding unit by described information about multicast source.
Optionally, described list item sets up unit 701, specifically comprises:
Relation sets up subelement 7011, for setting up MSDP peer relationship with the source forwarding unit at described information about multicast source place.
Acquisition of information subelement 7012, after receiving information about multicast source message that source forwarding unit sends, obtains the multicast group address of described information about multicast source and the correspondence of carrying in information about multicast source message.
Information adds subelement 7013, for described information about multicast source and multicast group address being added in information about multicast source table.
As can be seen here, the information server that utilization of the present invention is connected with target forwarding unit is to preserve information about multicast source, when target forwarding unit request information about multicast source, by the multicast source request message sent to information server, thus obtain the information about multicast source of asking, and then impel target forwarding unit to send corresponding multicast to multicast source to join message, the information about multicast source that user needs is guided to member host from multicast source.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (12)
1. an information about multicast source acquisition methods, it is characterized in that, described method is applied to target forwarding unit, described target forwarding unit is connected with information server, information about multicast source table set up in advance by described information server, described information about multicast source table comprises the information about multicast source corresponding with the multicast source in the sparse mode pim-SM territory of the non-conterminous Protocol Independent Multicast of described target forwarding unit, and described method comprises:
The multicast receiving member host's initiation joins request, and described multicast joins request and comprises asked multicast group address;
When not finding information about multicast source corresponding to described multicast group address, by described multicast group address write multicast source request message;
According to the address of the described information server prestored, send multicast source request message, to ask the information about multicast source that described multicast group address is corresponding to described information server;
Receive the information about multicast source that described multicast group address that described information server returns according to described information about multicast source table is corresponding.
2. method according to claim 1, is characterized in that, described method also comprises:
After Multicast Source Discovery Protocol MSDP peer relationship set up by source forwarding unit and described information server, receive the address of the described information server that described source forwarding unit sends;
Preserve the address of described information server.
3. method according to claim 2, is characterized in that, after preserving the address of described information server, described method also comprises:
For the address of described information server arranges ageing time;
When the address aging of described information server, or when receiving the address of new information server that described source forwarding unit sends, delete the address of described information server.
4. method according to claim 1, is characterized in that, described method also comprises:
When described target forwarding unit does not receive information about multicast source corresponding to described multicast group address that described information server returns, send described multicast source request message according to Fixed Time Interval to described information server, to obtain described information about multicast source.
5. an information about multicast source acquisition methods, it is characterized in that, described method is applied to information server, described information server is connected with target forwarding unit, information about multicast source table set up in advance by described information server, described information about multicast source table comprises the information about multicast source corresponding with the multicast source in the non-conterminous pim-sm domain of described target forwarding unit, and described method comprises:
Receive described target forwarding unit send multicast source request message, carry in described multicast source request message member host join request to the multicast that described target forwarding unit is initiated in multicast group address;
Obtain the multicast group address in described multicast source request message, in described information about multicast source table, search information about multicast source corresponding to described multicast group address;
Described information about multicast source is sent to described target forwarding unit.
6. method according to claim 5, is characterized in that, describedly sets up information about multicast source table in advance, comprising:
MSDP peer relationship is set up with the source forwarding unit of described multicast source;
After receiving the information about multicast source message of source forwarding unit transmission, obtain the multicast group address of described information about multicast source and the correspondence of carrying in information about multicast source message;
Described information about multicast source and multicast group address are added in information about multicast source table.
7. an information about multicast source acquisition device, it is characterized in that, described application of installation is in target forwarding unit, described target forwarding unit is connected with information server, information about multicast source table set up in advance by described information server, described information about multicast source table comprises the information about multicast source corresponding with the multicast source in the non-conterminous pim-sm domain of described target forwarding unit, and described device comprises:
Request reception unit, the multicast sent for receiving member host joins request, and described multicast joins request and comprises asked multicast group address;
Address writing unit, for when not finding information about multicast source corresponding to described multicast group address, by described multicast group address write multicast source request message;
Packet sending unit, for the address according to the described information server prestored, sends multicast source request message, to ask the information about multicast source that described multicast group address is corresponding to described information server;
Information receiving unit, for receiving information about multicast source corresponding to described multicast group address that described information server returns according to described information about multicast source table.
8. device according to claim 7, is characterized in that, described device also comprises:
Address accept unit, for after source forwarding unit and described information server set up MSDP peer relationship, receives the address of the described information server that described source forwarding unit sends;
Address storage unit, for preserving the address of described information server.
9. device according to claim 8, is characterized in that, described device also comprises:
Address setting unit, for arranging ageing time for the address of described information server;
Address delete cells, for when the address aging of described information server, or when receiving the address of the new information server that described source forwarding unit sends, deletes the address of described information server.
10. device according to claim 7, is characterized in that, described device also comprises:
Timed sending unit, during for not receiving information about multicast source corresponding to described multicast group address that described information server returns at described target forwarding unit, described multicast source request message is sent to described information server, to obtain described information about multicast source according to Fixed Time Interval.
11. 1 kinds of information about multicast source acquisition device, is characterized in that, described application of installation is in information server, and described information server is connected with target forwarding unit, and described device comprises:
List item sets up unit, and for setting up information about multicast source table in advance, described information about multicast source table comprises the information about multicast source corresponding with the multicast source in the non-conterminous pim-sm domain of described target forwarding unit;
Message receiving element, for receive described target forwarding unit send multicast source request message, carry in described multicast source request message member host join request to the multicast that described target forwarding unit is initiated in multicast group address;
Information searching unit, for obtaining the multicast group address in described multicast source request message, searches information about multicast source corresponding to described multicast group address in described information about multicast source table;
Information transmitting unit, for being sent to described target forwarding unit by described information about multicast source.
12. devices according to claim 11, is characterized in that, described list item sets up unit, specifically comprises:
Relation sets up subelement, for setting up MSDP peer relationship with the source forwarding unit at described information about multicast source place;
Acquisition of information subelement, after receiving information about multicast source message that source forwarding unit sends, obtains the multicast group address of described information about multicast source and the correspondence of carrying in information about multicast source message;
Information adds subelement, for described information about multicast source and multicast group address being added in information about multicast source table.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114727235A (en) * | 2022-03-29 | 2022-07-08 | 中国电信股份有限公司 | Multicast service processing method, device, storage medium and electronic equipment |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6594703B1 (en) * | 1999-06-02 | 2003-07-15 | Yunzhou Li | Apparatus and method of minimizing internal multicast traffic |
| US6738900B1 (en) * | 2000-01-28 | 2004-05-18 | Nortel Networks Limited | Method and apparatus for distributing public key certificates |
| EP1569383A1 (en) * | 2004-02-25 | 2005-08-31 | TeliaSonera Finland Oyj | Method, system and source for implementing multicasting |
| US20050220074A1 (en) * | 2004-03-30 | 2005-10-06 | Naokazu Kawamura | Multicast data communication system, data communication apparatus multicast data communication method, program and computer readable information recording medium |
| CN101232392A (en) * | 2008-02-22 | 2008-07-30 | 中兴通讯股份有限公司 | Method for notifying multicast source between MSDP and PIM |
| CN101247210A (en) * | 2008-03-12 | 2008-08-20 | 中兴通讯股份有限公司 | Method for implementing multicast forwarding tree based on multicast source discovering protocol |
| CN101483655A (en) * | 2009-02-10 | 2009-07-15 | 杭州华三通信技术有限公司 | Packet transmission method and proxy device for Internet group management protocol |
| CN101924641A (en) * | 2010-08-26 | 2010-12-22 | 北京星网锐捷网络技术有限公司 | Method, device and system for processing multicast source information |
| CN102025522A (en) * | 2010-12-21 | 2011-04-20 | 北京星网锐捷网络技术有限公司 | Method for realizing multicast between different IP domains and boundary gateway router |
| CN103516616A (en) * | 2013-10-18 | 2014-01-15 | 杭州华三通信技术有限公司 | Transmission method and equipment for SA messages |
-
2015
- 2015-02-03 CN CN201510055736.3A patent/CN104639446B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6594703B1 (en) * | 1999-06-02 | 2003-07-15 | Yunzhou Li | Apparatus and method of minimizing internal multicast traffic |
| US6738900B1 (en) * | 2000-01-28 | 2004-05-18 | Nortel Networks Limited | Method and apparatus for distributing public key certificates |
| EP1569383A1 (en) * | 2004-02-25 | 2005-08-31 | TeliaSonera Finland Oyj | Method, system and source for implementing multicasting |
| US20050220074A1 (en) * | 2004-03-30 | 2005-10-06 | Naokazu Kawamura | Multicast data communication system, data communication apparatus multicast data communication method, program and computer readable information recording medium |
| CN101232392A (en) * | 2008-02-22 | 2008-07-30 | 中兴通讯股份有限公司 | Method for notifying multicast source between MSDP and PIM |
| CN101247210A (en) * | 2008-03-12 | 2008-08-20 | 中兴通讯股份有限公司 | Method for implementing multicast forwarding tree based on multicast source discovering protocol |
| CN101483655A (en) * | 2009-02-10 | 2009-07-15 | 杭州华三通信技术有限公司 | Packet transmission method and proxy device for Internet group management protocol |
| CN101924641A (en) * | 2010-08-26 | 2010-12-22 | 北京星网锐捷网络技术有限公司 | Method, device and system for processing multicast source information |
| CN102025522A (en) * | 2010-12-21 | 2011-04-20 | 北京星网锐捷网络技术有限公司 | Method for realizing multicast between different IP domains and boundary gateway router |
| CN103516616A (en) * | 2013-10-18 | 2014-01-15 | 杭州华三通信技术有限公司 | Transmission method and equipment for SA messages |
Non-Patent Citations (3)
| Title |
|---|
| B.FENNER等: "《RFC3618》", 31 October 2003, IETF * |
| M.MCBRIDE等: "《RFC4611》", 31 August 2006, IETF * |
| 章磊等: "域间组播与PIM-SM的域间改进", 《微型电脑应用》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114727235A (en) * | 2022-03-29 | 2022-07-08 | 中国电信股份有限公司 | Multicast service processing method, device, storage medium and electronic equipment |
| CN114727235B (en) * | 2022-03-29 | 2024-01-30 | 中国电信股份有限公司 | Multicast service processing method and device, storage medium and electronic equipment |
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|---|---|
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