CN102447669A - Forwarding method of multimedia data streams and forwarding equipment - Google Patents
Forwarding method of multimedia data streams and forwarding equipment Download PDFInfo
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- CN102447669A CN102447669A CN2010102980044A CN201010298004A CN102447669A CN 102447669 A CN102447669 A CN 102447669A CN 2010102980044 A CN2010102980044 A CN 2010102980044A CN 201010298004 A CN201010298004 A CN 201010298004A CN 102447669 A CN102447669 A CN 102447669A
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Abstract
The invention provides a forwarding method supporting multiple instances of multimedia data streams and forwarding equipment realizing the method. The method comprises the following steps: configuring a table of correspondence between MAC (media access control) addresses and corresponding VLAN (virtual local area network) numbers and QoS (quality of service) values in advance in the forwarding equipment; after receiving the multimedia data streams, the forwarding equipment searching for the VLANs and QoS values corresponding to the MAC addresses which are matched with source MAC addresses and are configured in advance by reading the source MAC of the multimedia data streams; and forwarding the multimedia data streams in the corresponding VLANs according to the corresponding QoS values. The method and the equipment have the following beneficial effects: by configuring the first table of correspondence between the MAC addresses and the VLAN numbers and QoS values in advance and matching the source MAC of the multimedia data streams with the VLANs and QoS values, different multimedia data streams in the network can be guaranteed to be configured in different VLANs and be forwarded according to different QoS values.
Description
Technical field
The present invention relates to the ip voice technology, relate in particular to the retransmission technique of multimedia data stream.
Background technology
Growing along with voice technology, IP phone, IAD (Integrated Access Device, integrated access equipment), IPTV etc. use more and more widely, especially in broadband cell, often have voice flow and two kinds of flows of Business Stream in the network simultaneously.Voice flow need have the priority higher than business datum when transmitting, to reduce issuable time delay and packet loss phenomenon in the repeating process.
The traditional treatment method that improves the voice flow forwarding priority is to use ACL (ACL) that speech data is distinguished, and uses QoS (service quality) to guarantee transfer quality.For simplifying user's configuration, the forwarding strategy of Managing speech stream more easily, Voice VLAN (voice VLAN) is provided function.The main feature of Voice VLAN is exactly to automatically identify voice flow through the source MAC of message, and voice flow is distributed in the qos value of specific VLAN (Voice VLAN) by appointment transmits.
There are some restrictions in the implementation of current Voice VLAN; On an equipment, can only specify a VLAN to be used for VoiceVLAN and qos value can not be disposed by the user, that is to say voice flow through equipment can only be assigned to a VLAN and by one fixedly qos value handle.Above implementation can only be used to have only voice flow and voice flow need not specify the application of different qos values; But the development of IPTV now makes the service provider carry out also must carrying out the QoS processing to video flowing when QoS handles to voice flow, and obvious existing Voice VLAN can't meet the demands to the realization of multimedia data stream (comprising voice flow, video flowing etc.).
Summary of the invention
Technical problem to be solved by this invention is that a kind of retransmission method of many instances multimedia data stream and forwarding unit of realizing this method supported is provided.
The present invention solves the problems of the technologies described above the technical scheme that is adopted to be, the retransmission method of multimedia data stream comprises step:
The mapping table of pre-configured MAC Address and corresponding vlan number and qos value in forwarding unit;
After forwarding unit receives multimedia data stream,, find the pairing VLAN of pre-configured MAC Address and the qos value that are complementary with source MAC through reading the source MAC of multimedia data stream;
Multimedia data stream qos value by correspondence in the VLAN of correspondence is transmitted.
One of retransmission method embodiment of multimedia data stream of the present invention, when specifically comprising the steps: initialization, first mapping table of pre-configured MAC Address and corresponding vlan number and qos value; After forwarding unit receives multimedia data stream, read the source MAC of multimedia data stream, search in second mapping table whether the list item that matees fully with said source MAC is arranged earlier; In this way, multimedia data stream qos value by correspondence in corresponding VLAN is transmitted; As denying; Whether continuation is searched to have with said source MAC in first mapping table and is mated the perhaps list item of commensurate in scope fully; Find the vlan number then preserved in this source MAC and the said coupling list item and qos value to second mapping table; And multimedia data stream transmitted by corresponding qos value in said corresponding VLAN, otherwise transmit according to common data stream.
Two of the retransmission method embodiment of multimedia data stream of the present invention specifically comprises the steps:
During initialization, first mapping table of pre-configured MAC Address and corresponding vlan number and qos value;
After forwarding unit receives multimedia data stream, read the source MAC of multimedia data stream, search in first mapping table whether the list item that matees fully with said source MAC is arranged earlier; In this way, multimedia data stream qos value by correspondence in the VLAN of correspondence is transmitted; As denying; The list item that whether has with said source MAC commensurate in scope is searched in continuation in first mapping table; Find the vlan number then preserved in this source MAC and the said coupling list item and qos value to first mapping table; And multimedia data stream qos value by correspondence in the VLAN of correspondence transmitted, otherwise transmit according to common data stream.
First mapping table of the pre-configured MAC Address of the present invention and vlan number and qos value is through the source MAC of coupling multimedia data stream and the corresponding relation of VLAN and QOS value; Can ensure that multimedia data streams different in the network is configured among the different VLAN, transmit by different QOS values.
Further, the list item that matees fully with said source MAC is arranged, be meant that MAC Address and the source MAC in the list item is identical; List item with said source MAC commensurate in scope is arranged, be meant that source MAC is in list item in the mac address range.
Concrete, said QOS value representation forwarding priority, the forwarding priority of the big more correspondence of QOS is high more; The qos value that disposes in said first mapping table is greater than the qos value of common data stream.
Concrete, said second mapping table and first mapping table are same tables.
The qos value of said appointment is greater than the qos value of common data stream, and the multimedia data stream of designated like this qos value will be forwarded than common data stream faster.Common data stream is meant the data flow of searching the failure of MAC corresponding relation at this.
Forwarding unit comprises data flow receiving element, judging unit and classification transmission unit;
Said data flow receiving element is used for, receiving multimedia data stream;
Said judging unit is used for, and after receiving multimedia data stream, through reading the source MAC of multimedia data stream, searches in second mapping table whether the list item that matees fully with said source MAC is arranged earlier; In this way, trigger classification transmission unit qos value repeating multimedia data flow by correspondence in the VLAN of correspondence; As denying; Whether continuation is searched to have with said source MAC in first mapping table and is mated the perhaps list item of commensurate in scope fully; Find the vlan number then preserved in this source MAC and the said coupling list item and qos value to second mapping table; And trigger a classification transmission unit multimedia data stream qos value by correspondence in the VLAN of correspondence is transmitted, transmit according to common data stream otherwise trigger the classification transmission unit;
Said classification transmission unit is used for, and according to the execution result of judging unit, is having coupling to transmit by the qos value in the list item in according to the VLAN in the list item during list item multimedia data stream; Not mating list item then transmits according to common data stream.
The invention has the beneficial effects as follows, multimedia data stream is transmitted according to the VLAN and the qos value of user's appointment, meet consumers' demand more neatly.
Description of drawings
Fig. 1 is a multimedia forwarding unit sketch map;
Fig. 2 is the embodiment flow chart.
Embodiment
Forwarding unit shown in Figure 1 comprises data flow receiving element, judging unit and classification transmission unit.
During initialization, first mapping table of pre-configured MAC Address and vlan number and qos value.
Preserve first mapping table of pre-configured MAC Address and vlan number and qos value in the judging unit in the forwarding unit.The pairing VLAN of each pre-configured MAC Address and qos value can be inequality also can be identical; And pre-configured MAC Address can be a concrete address; Also can be an address realm (as; Use in the world MAC Address and address mask with after the address realm that obtains, be used for identifying the message that the speech ciphering equipment of each manufacturer sends, be called as OUI (the unified identifier in the whole world)).Specifying different vlan numbers and corresponding qos value for the pre-configured MAC Address of difference is the key that the present invention realizes many instances.The qos value Provisioning Policy: the qos value in the mapping table is greater than the qos value of common data stream.According to the execution result of judging unit, the classification transmission unit is having coupling to transmit by the qos value in the list item in by the VLAN in the list item during list item multimedia data stream; Do not mate then transmitting of list item according to common data stream.The source MAC that matees successful data flow and the corresponding relation of corresponding VLAN, qos value are to the classification transmission unit.
After the data flow receiving element of multimedia forwarding unit receives multimedia data stream, according to the execution result of judging unit, make the multimedia data stream of different source MAC to dispose according to the user, be assigned to different VLAN and qos value;
Divide the bill unit of walking around when handling different data flow, to have different forwarding behaviors.
According to the difference of forwarding unit, the mapping table of preserving in the judging unit can be had any different below.When said forwarding unit was two-layer switching equipment, the performed decision operation of judging unit was: search in second mapping table whether the list item that matees fully with said source MAC is arranged earlier; In this way, multimedia data stream qos value by correspondence in corresponding VLAN is transmitted; As denying; Whether continuation is searched to have with said source MAC in first mapping table and is mated the perhaps list item of commensurate in scope fully; Find the vlan number then preserved in this source MAC and the said coupling list item and qos value to second mapping table; And multimedia data stream transmitted by corresponding qos value in said corresponding VLAN, otherwise transmit according to common data stream.This moment, first mapping table was the relation table that is used to store concrete MAC Address and corresponding vlan number and qos value.
When said forwarding unit is routing forwarding equipment; Said second mapping table and first mapping table are same tables, and the performed decision operation of judging unit this moment is: judging unit searches in first mapping table whether the list item that matees fully with said source MAC is arranged earlier; In this way, multimedia data stream qos value by correspondence in the VLAN of correspondence is transmitted; As denying; The list item that whether has with said source MAC commensurate in scope is searched in continuation in first mapping table; Find the vlan number then preserved in this source MAC and the said coupling list item and qos value to first mapping table; And multimedia data stream qos value by correspondence in the VLAN of correspondence transmitted, otherwise transmit according to common data stream.
Be that two-layer switching equipment is an example below with the forwarding unit, the retransmission method of multimedia data stream of the present invention specified that idiographic flow is as shown in Figure 2:
Step 201: after the upstream plant speech ciphering equipment of multimedia forwarding unit powers on, will be in default vlan the initiation request message.Need not do two layers of configuration to speech ciphering equipment among the present invention, the message of speech ciphering equipment will be transmitted in the default vlan of network; Described speech ciphering equipment is to comprise that all are the multimedia equipment of identifier with source MAC.
Step 202: after forwarding unit received the multimedia data stream from speech ciphering equipment through port, judging unit was learnt the entrained source MAC of data flow;
Step 203: judging unit at first through search second corresponding relation judge the data flow receive whether with forwarding unit opening relationships.Opening relationships is meant; The list item that the source MAC of the data flow that in second corresponding relation, exists and receive matees fully; If opening relationships, explain the equipment that sends data flow be speech ciphering equipment and with forwarding unit opening relationships, get into step 206; Exist then carry out next step if it doesn't matter;
Step 204: whether the data flow that judgment unit judges receives is multimedia data stream; According to user pre-configured MAC Address and corresponding relation of VLAN and qos value in first mapping table, the source MAC of data flow and pre-configured MAC Address are carried out matching operation.Because pre-configured MAC Address can be a concrete MAC Address also can be an address realm, thereby matching condition is very flexible; Search whether to have and mate the perhaps list item of commensurate in scope fully with said source MAC.If coupling gets nowhere then thinks that this data flow is non-multimedia data stream, get into step 207.Successfully can confirm as multimedia data stream continuation next step and mate;
Step 205: preserve the source MAC of the successful data flow of coupling and corresponding relation second mapping table of corresponding VLAN, qos value, get into step 206.Though the corresponding relation of user's also pre-configured active MAC and VLAN and qos value in first corresponding relation before; But pre-configured MAC Address possibly be an address realm; But not point to certain concrete equipment; Just say that also it is that the user hopes to be used as the mac address range that multimedia data stream is handled that the user disposes corresponding relation, and this is in the MAC Address for the speech ciphering equipment of concrete transmission multimedia data stream that writes down in second mapping table;
Step 206: the classification transmission unit in the VLAN in correspondence is transmitted multimedia data stream when the coupling list item is arranged according to the execution result of judging unit by the qos value of correspondence; Do not mate then transmitting of list item according to common data stream.Because equipment can provide different forwarding priorities according to the qos value of data flow is different, usually the qos value of common data stream be 0 and the qos value of appointment greater than 0, thereby the data flow of designated qos value can be forwarded than common data stream faster.
Step 207: the data forwarding unit is handled by common data stream.
Three unit collaborative works are handled the data flow of input.Audio data stream is transmitted, auxiliary qos value Provisioning Policy, the low delay of assurance multimedia data stream, highly reliable forwarding by the VLAN and the qos value of user's appointment.Such as video flowing and voice flow are arranged in the network simultaneously, the source MAC of video flowing is 0003.6b00.0001, and the source MAC of voice flow is 00E0.BB00.0002.Forwarding unit can be 4 according to the corresponding VLAN 2 of the pre-configured 0003.6b00.0001 of service provider's demand, qos value, and the corresponding VLAN 3 of 00E0.BB00.0002, Qos value are 3.Like this, forwarding unit then can be so that video flowing be 4 to transmit with qos value in VLAN 2, and voice flow is 3 to transmit with the Qos value in VLAN 3.
Claims (9)
1. the retransmission method of multimedia data stream is characterized in that, comprises step:
The mapping table of pre-configured MAC Address and corresponding vlan number and qos value in forwarding unit;
After forwarding unit receives multimedia data stream,, find the pairing VLAN of pre-configured MAC Address and the qos value that are complementary with source MAC through reading the source MAC of multimedia data stream;
Multimedia data stream qos value by correspondence in the VLAN of correspondence is transmitted.
2. the retransmission method of multimedia data stream according to claim 1 is characterized in that, specifically comprises the steps:
During initialization, first mapping table of pre-configured MAC Address and corresponding vlan number and qos value;
After forwarding unit receives multimedia data stream, read the source MAC of multimedia data stream, search in second mapping table whether the list item that matees fully with said source MAC is arranged earlier; In this way, multimedia data stream qos value by correspondence in corresponding VLAN is transmitted; As denying; Whether continuation is searched to have with said source MAC in first mapping table and is mated the perhaps list item of commensurate in scope fully; Find the vlan number then preserved in this source MAC and the said coupling list item and qos value to second mapping table; And multimedia data stream transmitted by corresponding qos value in said corresponding VLAN, otherwise transmit according to common data stream.
3. the retransmission method of multimedia data stream according to claim 1 is characterized in that, specifically comprises the steps:
During initialization, first mapping table of pre-configured MAC Address and corresponding vlan number and qos value;
After forwarding unit receives multimedia data stream, read the source MAC of multimedia data stream, search in first mapping table whether the list item that matees fully with said source MAC is arranged earlier; In this way, multimedia data stream qos value by correspondence in the VLAN of correspondence is transmitted; As denying; The list item that whether has with said source MAC commensurate in scope is searched in continuation in first mapping table; Find the vlan number then preserved in this source MAC and the said coupling list item and qos value to first mapping table; And multimedia data stream qos value by correspondence in the VLAN of correspondence transmitted, otherwise transmit according to common data stream.
4. like the retransmission method of multimedia data stream in claim 2 or the 3 said voice VLANs, it is characterized in that the list item that matees fully with said source MAC is arranged, be meant that MAC Address and the source MAC in the list item is identical; List item with said source MAC commensurate in scope is arranged, be meant that source MAC is in list item in the mac address range.
5. like the retransmission method of multimedia data stream in the said voice VLAN of above-mentioned any claim; It is characterized in that; Said qos value representes that the forwarding priority of the big more correspondence of forwarding priority qos value is high more, and the qos value that disposes in said first mapping table is greater than the qos value of common data stream.
6. the multimedia forwarding unit is characterized in that, comprises data flow receiving element, judging unit and classification transmission unit;
Said data flow receiving element is used for, receiving multimedia data stream;
Said judging unit is used for, and after receiving multimedia data stream, through reading the source MAC of multimedia data stream, searches in second mapping table whether the list item that matees fully with said source MAC is arranged earlier; In this way, trigger classification transmission unit qos value repeating multimedia data flow by correspondence in the VLAN of correspondence; As denying; The list item that whether has with said source MAC commensurate in scope is searched in continuation in first mapping table; Find the vlan number then preserved in this source MAC and the said coupling list item and qos value to second mapping table; And trigger the classification transmission unit multimedia data stream qos value by correspondence in the VLAN of correspondence is transmitted, transmit according to common data stream otherwise trigger the classification transmission unit;
Said classification transmission unit is used for, and according to the execution result of judging unit, is having coupling to transmit by the qos value in the list item in according to the VLAN in the list item during list item multimedia data stream; Not mating list item then transmits according to common data stream.
7. like the said multimedia forwarding unit of claim 6, it is characterized in that said judgment unit judges has the list item that matees fully with said source MAC, be meant that MAC Address and the source MAC in the list item is identical; Said judgment unit judges has the list item with said source MAC commensurate in scope, is meant that source MAC is in list item in the mac address range.
8. like claim 6 or 7 said multimedia forwarding units, it is characterized in that said qos value is represented forwarding priority, the forwarding priority of the big more correspondence of qos value is high more; The qos value that disposes in said first mapping table is greater than the qos value of common data stream.
9. like the said multimedia forwarding unit of above-mentioned any claim, it is characterized in that said second mapping table and first mapping table are same tables.
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| CN2010102980044A CN102447669A (en) | 2010-09-30 | 2010-09-30 | Forwarding method of multimedia data streams and forwarding equipment |
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| WO2015196961A1 (en) * | 2014-06-24 | 2015-12-30 | 华为技术有限公司 | Device, system and method for providing quality of service (qos) for service packet |
| CN106130922A (en) * | 2016-07-28 | 2016-11-16 | 杭州华三通信技术有限公司 | A kind of method for dispatching message and network equipment |
| CN108965159A (en) * | 2017-05-24 | 2018-12-07 | 华为技术有限公司 | Method for controlling quality of service, equipment and system |
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Application publication date: 20120509 |