CN101827037A - Multicast data stream sending method, device and two-layer switching equipment - Google Patents
Multicast data stream sending method, device and two-layer switching equipment Download PDFInfo
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Abstract
The invention discloses a multicast data stream sending method, a device and two-layer switching equipment. The multicast data stream sending method comprises the following steps: judging whether the data source information of received data streams is matched with the preset reliable data source information or not; transferring data streams to a terminal of a host machine when the data source information of the received data streams is matched with the preset reliable data source information; or abandoning the data streams when the data source information of the received data streams is not matched with the preset reliable data source information. The multicast data stream sending method, the device and the two-layer switching equipment provided by the invention judge whether the data source information of the received data streams is matched with the preset reliable data source information or not through comparing the data source information of the received data streams to the preset reliable data source information, the matched data streams are transferred to the terminal of the host machine, the unmatched data streams are abandoned, the invention ensures that the user of the terminal of the host machine can obtain correct data steam, and the normal operation of the business is realized.
Description
Technical field
The present invention relates to the Ethernet technical field of multicast, relate in particular to a kind of sending method, device and two-layer switching equipment of multicast traffic stream.
Technical background
In the prior art, (Internet Group Manage Protocol, major function IGMP) is to necessary group membership's relationship safeguard mechanism is provided between host terminal and the router Internet Group Management Protocol.For example the IGMP that adopts of Layer 2 Multicast is intercepted technology and is based upon on the IGMP agreement, IGMP is intercepted at link layer and is moved, when two-layer switching equipment is received the IGMP message that transmits between host terminal and the router, its information of carrying of IGMP intercept analysis, on two-layer switching equipment, set up and safeguard hardware address (Media Access Control, MAC) multicast address, after receiving the multicast traffic stream that router issues, transmit according to this MAC multicast address, thereby can prevent that multicast traffic stream from broadcasting in two-layer switching equipment.
Host terminal can add multicast group by IGMP message, and obtains data flow, and referring to Fig. 1, its flow process is as follows: host terminal 1 sends the application of IGMP report message to two-layer switching equipment and adds multicast group;
Two-layer switching equipment receives the IGMP report message and sets up the MAC multicast forward table according to this IGMP report message;
Two-layer switching equipment is transmitted this IGMP report message to router, informs that router has the data flow of host terminal request multicast group, and creates forwarding-table item.
Router is forwarded to the data flow that receives in the two-layer switching equipment according to forwarding-table item, and two-layer switching equipment is forwarded to host terminal 1 again according to the MAC multicast forward table with data flow.
Because host terminal 2 and host terminal 3 send IGMP report message request multicast packet to two-layer switching equipment, so two-layer switching equipment can not transmitted data flow to host terminal 2 and host terminal 3.
Host terminal also can leave multicast group with realization by send IG MP leave message to two-layer switching equipment, first kind of situation, and host terminal 1 and host terminal 2 are all multicast member, and host terminal 1 application is left, and referring to Fig. 2, its flow process is as follows:
Host terminal 1 sends IGMP leave message to two-layer switching equipment;
Two-layer switching equipment sends to multicast router with IGMP leave message, and to inform the all-router in the subnet, host terminal 1 is leaving multicast group;
After multicast router is received IGMP leave message, to all host terminal group-specific query messages, to determine in the current sub network whether host terminal being arranged, which has need data flow in multicast group;
Host terminal 2 receives the group-specific query message, and the feedback report message informs that host terminal 2 is multicast member in the subnet.
Router is forwarded to two-layer switching equipment with data flow, is forwarded on the host terminal 2 by two-layer switching equipment again.
First kind of situation, host terminal 2 are last member of multicast group, and host terminal 2 applications are left, and referring to Fig. 3, its flow process is as follows:
Host terminal 2 sends IGMP leave message to two-layer switching equipment;
Two-layer switching equipment sends to multicast router with IGMP leave message, and to inform the all-router in the subnet, host terminal 2 is leaving multicast group;
After multicast router is received IGMP leave message, to all host terminal group-specific query messages, to determine in the current sub network whether host terminal being arranged, which has need data flow in multicast group.
Multicast group has not had the group membership in the subnet at this moment, therefore there is not host terminal that response is made in this group-specific query, the forwarding-table item of router deletion multicast group correspondence, two-layer switching equipment is also deleted the MAC multicast forward table of multicast group correspondence simultaneously, so data flow is also no longer transmitted.
After above-mentioned host terminal adds, two-layer switching equipment can generate the MAC multicast forward table, this list item comprises the physical port of receiving the IGMP report message, the VLAN of this port (Virtual LocalArea Network, VLAN) MAC Address of ID and multicast group is transmitted the forwarding of carrying out data flow according to this MAC then.But this MAC transmits and only comprises data flow and send port information, does not have data flow access interface information, and the not control of access to data flow can't guarantee that the data flow that host terminal is received is correct.For example, if host terminal 3 is the assailant, the misdata stream that host terminal 3 sends to two-layer switching equipment, after two-layer switching equipment receives this data flow, same basis is transmitted and is transmitted, this moment, host terminal 1 can be received two piece of data stream, and the data flow of mistake may cause host terminal normally to move.
Summary of the invention
Main purpose of the present invention is to provide a kind of sending method, device and two-layer switching equipment of multicast traffic stream, prevents that host terminal from receiving wrong data flow, guarantees that host terminal normally moves.
The present invention proposes a kind of sending method of multicast traffic stream, and it comprises step:
Whether data source information and the preset reliable data source information of judging the data flow that receives mate;
When the data source information of the data flow that receives and preset reliable data source information coupling, transmit data flow to host terminal; Perhaps,
When the data source information of the data flow that receives and preset reliable data source information do not match, then abandon data flow.
Preferably, before whether the data source information of the data flow that judgement receives and preset reliable data source information mate, also comprise:
Obtain the data source information of the data flow that receives.
Preferably, described reliable data source information comprises one or more of following information: data source IP address information, data source mac address information, data source port information, Access Control List (ACL) information.
The present invention proposes a kind of dispensing device of multicast traffic stream in addition, and it comprises:
Detection module is used to judge whether the data source information of the data flow that receives and preset reliable data source information mate;
Sending module is used for transmitting data flow to host terminal when the data source information of the data flow that receives and preset reliable data source information coupling; Perhaps, when the data source information of the data flow that receives and preset reliable data source information do not match, abandon data flow.
Preferably, also comprise: acquisition module is used to obtain the data source information of the data flow that receives.
Preferably, described reliable data source information comprises one or more of following information: data source IP address information, data source mac address information, data source port information, Access Control List (ACL) information.
The present invention also proposes a kind of two-layer switching equipment, comprise the receiver module that is used for receiving data stream, it also comprises the dispensing device of multicast traffic stream, the dispensing device of described multicast traffic stream comprises again: detection module is used to judge whether the data source information of the data flow that receives and preset reliable data source information mate;
Sending module is used for transmitting data flow to host terminal when the data source information of the data flow that receives and preset reliable data source information coupling; Perhaps, when the data source information of the data flow that receives and preset reliable data source information do not match, abandon data flow.
Preferably, also comprise: acquisition module is used to obtain the data source information of the data flow that receives.
Preferably, described reliable data source information comprises one or more of following information: data source IP address information, data source mac address information, data source port information, Access Control List (ACL) information.
The sending method of a kind of multicast traffic stream provided by the present invention, device and two-layer switching equipment, the data source information and the preset reliable data source information of the data flow that receives by contrast, judge whether the two mates, the data flow of coupling then is transmitted to host terminal, unmatched data flow then abandons, guaranteed that the host terminal user obtains correct data flow, realized professional normal operation.
Description of drawings
Fig. 1 is the structural representation that host terminal of the prior art adds multicast group;
Fig. 2 is the structural representation that host terminal of the prior art leaves multicast group;
Fig. 3 is another structural representation that host terminal of the prior art leaves multicast group;
Fig. 4 is the flow chart of sending method one embodiment of multicast traffic stream of the present invention;
Fig. 5 is the flow chart of another embodiment of sending method of multicast traffic stream of the present invention;
Fig. 6 is the structural representation of dispensing device one embodiment of multicast traffic stream of the present invention;
Fig. 7 is the structural representation of another embodiment of dispensing device of multicast traffic stream of the present invention;
Fig. 8 is the structural representation of another embodiment of dispensing device of multicast traffic stream of the present invention;
Fig. 9 is the structure chart of two-layer switching equipment one embodiment of the present invention;
Figure 10 is the structure chart of another embodiment of two-layer switching equipment of the present invention;
Figure 11 is the structure chart of another embodiment of two-layer switching equipment of the present invention;
Figure 12 is the structural representation of the transmission example of multicast traffic stream of the present invention.
The realization of the object of the invention, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Referring to Fig. 4, sending method one embodiment of multicast traffic stream of the present invention is proposed, it comprises:
Whether the data source information and the preset reliable data source information of the data flow that step 101, judgement receive mate; When the data source information of the data flow that receives and preset reliable data source information coupling, change step 102 over to; Perhaps, when the data source information of the data flow that receives and preset reliable data source information do not match, then change step 103 over to;
Reliable data source information in this step comprises one or more of following information: data source IP address, data source MAC Address, data source port, Access Control List (ACL).
The data source port is the data flow access interface of the data flow that sends over of couple in router, and the form that this data flow access interface can be numbered is recorded in the reliable data source information.
Access Control List (ACL) records whether each port in the two-layer switching equipment of incoming data stream is forbidden that the data flow that will insert transmits the configuration information that is configured.
For example, preset reliable data source information is the IP address of a server, the data flow that receives is to send to router by this server just, transmit according to forwarding-table item by router then, the data flow that this moment, expression received is correct, the data source information and the preset reliable data source information of the data flow that promptly receives are complementary, and then change step 102 over to.
If the data flow that receives is sent by other host terminals, this data flow generally is wrong or destructive, the IP address of these other host terminals is different with the IP address of server, the data source information and the preset reliable data source information of the data flow that promptly receives are not complementary, and then change step 102 over to.
Information during this step is transmitted according to MAC is transmitted data flow to host terminal.
This step directly abandons this data flow at the access interface that inserts this data flow, prevents that host terminal from receiving wrong data flow.
Further,, propose another embodiment of sending method of multicast traffic stream of the present invention, before the step 101 of the foregoing description, also comprise referring to Fig. 5:
This step is that the step 101 of the foregoing description is prepared.
Present embodiment, the data source information and the preset reliable data source information of the data flow that receives by contrast, judge whether the two mates, the data flow of coupling then is transmitted to host terminal, unmatched data flow then abandons, guaranteed that the host terminal user obtains correct data flow, realized professional normal operation.
Referring to Fig. 6, dispensing device 10 1 embodiment of multicast traffic stream of the present invention are proposed, it comprises: detection module 11, sending module 12; Wherein, detection module 11 is used to judge whether the data source information of the data flow that receives and preset reliable data source information mate; Sending module 12 when being used in the data source information of the data flow that receives and preset reliable data source information coupling, is transmitted data flow to host terminal.For example, preset reliable data source information is the IP address of a server, and the data flow that receives is to send to router data stream by this server just, transmits according to forwarding-table item by router then.The data flow that this moment, expression received is correct.Sending module 12 when also being used in the data source information of the data flow that receives and preset reliable data source information and not matching, abandons data flow, prevents that host terminal from receiving wrong data flow.For example, preset reliable data source information is the IP address of a server as mentioned above, but the data flow that receives is sent by other host terminals, the IP address of these other host terminals and the IP address of server are not complementary, this data flow generally is wrong data flow or destructive data flow, may cause the host terminal that receives this data flow normally to move, therefore must abandon, directly abandon at the access interface that inserts this data flow.
Reliable data source information comprises one or more of following information: data source IP address information, data source mac address information, data source port information, Access Control List (ACL) information.
The data source port is the data flow access interface of the data flow that sends over of couple in router, and the form that this data flow access interface can be numbered is recorded in the reliable data source information.
Access Control List (ACL) records whether each port in the two-layer switching equipment of incoming data stream is forbidden that the data flow that will insert transmits the configuration information that is configured.
Further, referring to Fig. 7, the dispensing device 10 of above-mentioned multicast traffic stream also comprises: acquisition module 13, this acquisition module 13 is used to obtain the data source information of the data flow that receives.Whether mate for the data source information of detection module 11 judgment data stream and preset reliable data source information and to prepare.
Further, referring to Fig. 8, the dispensing device 10 of above-mentioned multicast traffic stream also comprises: memory module 14, this memory module 14 is used to store preset reliable data source information.
Present embodiment, the data source information and the preset reliable data source information of the data flow that receives by contrast, judge whether the two mates, the data flow of coupling then is transmitted to host terminal, unmatched data flow then abandons, guaranteed that the host terminal user obtains correct data flow, realized professional normal operation.
Referring to Fig. 9, two-layer switching equipment of the present invention is proposed, comprise the receiver module 41 that is used for receiving data stream and the dispensing device 10 of multicast traffic stream.The dispensing device 10 of multicast traffic stream comprises again: detection module 11 and sending module 12, wherein, detection module 11 is used to judge whether the data source information of the data flow that receives and preset reliable data source information mate.For example, preset reliable data source information is the IP address of a server, and the data flow that receives is to send to router data stream by this server just, transmits according to forwarding-table item by router then.The data flow that this moment, expression received is correct.Sending module 12 is used for transmitting data flow when the data source information of the data flow that receives and preset reliable data source information coupling; Perhaps, when the data source information of the data flow that receives and preset reliable data source information do not match, abandon data flow, prevent that host terminal from receiving wrong data flow.For example, preset reliable data source information is the IP address of a server as mentioned above, but the data flow that receives is sent by other host terminals, the IP address of these other host terminals and the IP address of server are not complementary, this data flow generally is wrong data flow or destructive data flow, may cause the host terminal that receives this data flow normally to move, therefore must abandon, directly abandon at the access interface that inserts this data flow.
Reliable data source information comprises one or more of following information: data source IP address information, data source mac address information, data source port information, Access Control List (ACL) information.
The data source port is the data flow access interface of the data flow that sends over of couple in router, and the form that this data flow access interface can be numbered is recorded in the reliable data source information.
Access Control List (ACL) records whether each port in the two-layer switching equipment of incoming data stream is forbidden that the data flow that will insert transmits the configuration information that is configured.
Further, referring to Figure 10, above-mentioned two-layer switching equipment also comprises: acquisition module 13; This acquisition module 13 is used to obtain the data source information of the data flow that receives.Whether mate for the data source information of detection module 11 judgment data stream and preset reliable data source information and to prepare.
Further, referring to Figure 11, above-mentioned two-layer switching equipment also comprises: memory module 14, this memory module 14 is used to store preset reliable data source information.
Present embodiment, the data source information and the preset reliable data source information of the data flow that receives by contrast, judge whether the two mates, the data flow of coupling then is transmitted to host terminal, unmatched data flow then abandons, guaranteed that the host terminal user obtains correct data flow, realized professional normal operation.
Above-mentioned two-layer switching equipment can be applied to the Ethernet multi-cast system, below be sent as example, be described in detail in Ethernet system, to carry out multicast traffic stream.Referring to Figure 12, the dispensing device 10 of above-mentioned multicast traffic stream can be arranged in the two-layer switching equipment 40 in the Ethernet system.In addition, it is 1.1.1.1 that the IP address of the server 20 of correct data stream is provided, and MAC Address is 00:00:00:0A:0B:0C, and this server 20 sends to router three 0 with data flow.
The process of transmitting of multicast traffic stream is as follows:
After router three 0 is received report message, create and transmit page or leaf, the data flow of then server 20 being sent is transmitted to two-layer switching equipment 40 according to transmitting page or leaf;
After receiver module 41 in the two-layer switching equipment 40 is received data flow, obtain the data source information of this data flow that receives by the acquisition module 13 in the dispensing device 10 of multicast traffic stream;
When the two is complementary, then sending module 12 is transmitted to host terminal 50 according to MAC and is transmitted data flow;
When the two is not complementary, then sending module 12 abandons this data flow from the port that receives this data flow.
Can prevent effectively that by said method host terminal from receiving wrong data flow, cause the generation of the situation that business can't normally move.
Should be understood that; below only be the preferred embodiments of the present invention; can not therefore limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (9)
1. the sending method of a multicast traffic stream is characterized in that, comprises step:
Whether data source information and the preset reliable data source information of judging the data flow that receives mate;
When the data source information of the data flow that receives and preset reliable data source information coupling, transmit data flow to host terminal; Perhaps,
When the data source information of the data flow that receives and preset reliable data source information do not match, then abandon data flow.
2. the sending method of multicast traffic stream according to claim 1 is characterized in that, also comprises before whether the data source information of the data flow that judgement receives and preset reliable data source information mate:
Obtain the data source information of the data flow that receives.
3. the sending method of multicast traffic stream according to claim 1 and 2, it is characterized in that described reliable data source information comprises one or more of following information: data source IP address information, data source mac address information, data source port information, Access Control List (ACL) information.
4. the dispensing device of a multicast traffic stream is characterized in that, comprising:
Detection module is used to judge whether the data source information of the data flow that receives and preset reliable data source information mate;
Sending module is used for transmitting data flow to host terminal when the data source information of the data flow that receives and preset reliable data source information coupling; Perhaps, when the data source information of the data flow that receives and preset reliable data source information do not match, abandon data flow.
5. the dispensing device of multicast traffic stream according to claim 4 is characterized in that, also comprises:
Acquisition module is used to obtain the data source information of the data flow that receives.
6. according to the dispensing device of claim 4 or 5 described multicast traffic streams, it is characterized in that described reliable data source information comprises one or more of following information: data source IP address information, data source mac address information, data source port information, Access Control List (ACL) information.
7. two-layer switching equipment, comprise the receiver module that is used for receiving data stream, it is characterized in that, the dispensing device that also comprises multicast traffic stream, the dispensing device of described multicast traffic stream comprises again: detection module is used to judge whether the data source information of the data flow that receives and preset reliable data source information mate;
Sending module is used for transmitting data flow to host terminal when the data source information of the data flow that receives and preset reliable data source information coupling; Perhaps, when the data source information of the data flow that receives and preset reliable data source information do not match, abandon data flow.
8. two-layer switching equipment according to claim 7 is characterized in that, also comprises:
Acquisition module is used to obtain the data source information of the data flow that receives.
9. according to claim 7 or 8 described two-layer switching equipments, it is characterized in that described reliable data source information comprises one or more of following information: data source IP address information, data source mac address information, data source port information, Access Control List (ACL) information.
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| WO2016041388A1 (en) * | 2014-09-19 | 2016-03-24 | 中兴通讯股份有限公司 | Multicast security control method and device based on dns |
| CN105871846A (en) * | 2016-03-31 | 2016-08-17 | 杭州华三通信技术有限公司 | Multicast group management method and device |
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Application publication date: 20100908 |