CN103957164A - Method and device for maintaining two-layer multicast forwarding table items - Google Patents
Method and device for maintaining two-layer multicast forwarding table items Download PDFInfo
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Abstract
The invention discloses a method and device for maintaining two-layer multicast forwarding table items. The method includes the steps that IGMP/MLD proxy equipment sends query messages through a physical interface arranged in an uplink VLAN interface and connected with host equipment; after the IGMP/MLD proxy equipment receives multicast adding messages through the physical interface arranged in the uplink VLAN interface and connected with the host equipment, the corresponding relation between a multicast group carried by the multicast adding messages and needing adding to the host equipment and the physical interface receiving the multicast adding messages is recorded in the two-layer multicast forwarding table items. According to the method and device, forwarding of the multicast messages can be managed and controlled, so that the goal of distributing the multicast messages on the uplink VLAN interface according to the requirement is achieved.
Description
Technical field
The present invention relates to communication technical field, especially related under a kind of multicast application scene the maintaining method of second-layer multicast forwarding list item and equipment.
Background technology
In some simple tree network topologys, on edge device, do not need to move complicated multicast routing protocol (as PIM (Protocol Independent Multicast, Protocol Independent Multicast) agreement), and by configure IGMP (Internet Group Management Protocol on edge device, the Internet multicast igmpinternet)/MLD (Multicast Listener Discovery Protocol, multicast listener is found agreement) agency, to realize Multicast Routing function.The edge device that has configured IGMP/MLD agency can be called IGMP/MLD agent equipment, this IGMP/MLD agent equipment can replace the network equipment (being upstream network device) and main process equipment (being downstream main process equipment) to carry out alternately, and now IGMP/MLD agent equipment is as the network equipment of main process equipment; This IGMP/MLD agent equipment can also replace main process equipment and the network equipment to carry out alternately, and now IGMP/MLD agent equipment is as the main process equipment of the network equipment.
On IGMP/MLD agent equipment, need for main process equipment craft personal relational database, in this group membership's relational database, recorded the source address information of the multicast group that main process equipment adds, the group address message of multicast group that main process equipment adds, the group information such as address information of main process equipment.Maintenance process based on this group membership's relational database and use procedure, IGMP/MLD agent equipment can replace main process equipment and the network equipment to carry out alternately, and can replace the network equipment and main process equipment to carry out alternately.
On IGMP/MLD agent equipment, be defined as follows interface type: (1) upstream Interface, refer to move on IGMP/MLD agent equipment the interface of IGMP/MLD agent functionality, this upstream Interface is carried out the Host behavior of IGMP/MLD agreement.Further, based on this upstream Interface, when IGMP/MLD agent equipment is received the query message from the network equipment by upstream Interface, inquire about group membership's relational database that this IGMP/MLD agent equipment is safeguarded, and the group information exchange recording in group membership's relational database is crossed to upstream Interface feed back to the network equipment.(2) downstream interface, refers to the interface of the operation of other except upstream Interface on IGMP/MLD agent equipment IGMP/MLD agreement, and this downstream interface is carried out the router behavior of IGMP/MLD agreement.Further, based on this downstream interface, IGMP/MLD agent equipment sends query message by downstream interface to each main process equipment, by group information such as each host device responds " group address message of the multicast group that the source address information of the multicast group that main process equipment adds, main process equipment add, the address information of main process equipment ", and utilize the group maintenance of information group membership relational database of each host device responds.
As shown in Figure 1, application scenarios schematic diagram for operation IGMP/MLD agency, IGMP/MLD agent equipment is by VLAN (Virtual Local Area Network, VLAN) interface is connected with the network equipment (S), now this VLAN interface is upstream Interface, also be called ascending VLAN interface, follow-uply take up VLAN interface and describe as example; IGMP/MLD agent equipment is connected with main process equipment 4 by Ethernet interface 1, and is connected with main process equipment 3 by Ethernet interface 2, and now, Ethernet interface 1 and Ethernet interface 2 are downstream interface.Further, this ascending VLAN interface is comprised of actual physical interfaces P1, actual physical interfaces P2 and actual physical interfaces P3, this physical interface P1 is connected with main process equipment 1, and this physical interface P2 is connected with the network equipment (S), and this physical interface P3 is connected with main process equipment 2.
Because downstream interface only includes Ethernet interface 1 and Ethernet interface 2, therefore, IGMP/MLD agent equipment only can send query message by Ethernet interface 1 and Ethernet interface 2, now in group membership's relational database, only can record the group information (source address information of the multicast group that main process equipment adds of main process equipment 3 and main process equipment 4, the group address message of the multicast group that main process equipment adds, the address information of main process equipment), and the group information that also only can comprise main process equipment 3 and main process equipment 4 in the group information that IGMP/MLD agent equipment sends to the network equipment, and can not comprise the group information of main process equipment 1 and main process equipment 2.
Obviously, because IGMP/MLD agent equipment cannot record the group information of main process equipment 1 and main process equipment 2 in group membership's relational database, therefore IGMP/MLD agent equipment cannot proxy equipment 1 and the Host behavior of main process equipment 2, when main process equipment 1 and main process equipment 2 also have the demand that adds multicast group and receive flow, cannot be by IGMP/MLD agent equipment for main process equipment 1 and main process equipment 2 sending flow rates.
Summary of the invention
The embodiment of the present invention provides a kind of maintaining method and equipment of second-layer multicast forwarding list item, think that the main process equipment that physical interface in ascending VLAN interface connects safeguards second-layer multicast forwarding list item, and the main process equipment connecting for the physical interface in ascending VLAN interface issues multicast message.
In order to achieve the above object, the embodiment of the present invention provides a kind of maintaining method of second-layer multicast forwarding list item, and described method comprises: the Internet multicast igmpinternet IGMP/ multicast listener finds that MLD agent equipment sends query message by the physical interface being connected with main process equipment in uplink virtual local area network (LAN) VLAN interface; Wherein, described IGMP/MLD agent equipment is connected with the network equipment by described ascending VLAN interface, and described ascending VLAN interface is comprised of plural physical interface, and has physical interface to be connected with main process equipment in described plural physical interface; After described IGMP/MLD agent equipment receives that by the physical interface being connected with main process equipment in described ascending VLAN interface multicast joins message, in second-layer multicast forwarding list item, record the multicast group that main process equipment that described multicast carries in joining message need to add and receive the corresponding relation between the physical interface that described multicast joins message.
Described IGMP/MLD agent equipment sends query message by the physical interface being connected with main process equipment in ascending VLAN interface, specifically comprise: described IGMP/MLD agent equipment, when described ascending VLAN interface enable IGMP/MLD agent functionality, sends query message by the physical interface being connected with main process equipment in described ascending VLAN interface.
Described IGMP/MLD agent equipment sends query message by the physical interface being connected with main process equipment in ascending VLAN interface, specifically comprise: if described IGMP/MLD agent equipment is not received the query message from the network equipment by described ascending VLAN interface, described IGMP/MLD agent equipment self structure query message, and the query message of self constructing by the physical interface transmission being connected with main process equipment in described ascending VLAN interface; If described IGMP/MLD agent equipment is received the query message from the network equipment by described ascending VLAN interface, on described IGMP/MLD agent equipment each physical interface in described ascending VLAN interface, broadcast the described query message from the network equipment; While sending the query message of self constructing before described IGMP/MLD agent equipment, stop sending the query message of self constructing.
After described IGMP/MLD agent equipment records the multicast group that main process equipment that described multicast carries in joining message need to add and receives the corresponding relation between the physical interface that described multicast joins message in second-layer multicast forwarding list item, also comprise: described IGMP/MLD agent equipment is received multicast message, utilize the multicast group of described multicast message to inquire about described second-layer multicast forwarding list item, the physical interface corresponding to multicast group of the described multicast message recording in the described second-layer multicast forwarding list item of foundation sends described multicast message to main process equipment.
The embodiment of the present invention provides a kind of the Internet multicast igmpinternet IGMP/ multicast listener to find MLD agent equipment, and for safeguarding second-layer multicast forwarding list item, this IGMP/MLD agent equipment comprises:
Query message sending module, sends query message for the physical interface by being connected with main process equipment in uplink virtual local area network (LAN) VLAN interface; Wherein, described IGMP/MLD agent equipment is connected with the network equipment by described ascending VLAN interface, and described ascending VLAN interface is comprised of plural physical interface, and has physical interface to be connected with main process equipment in described plural physical interface;
Forwarding-table item maintenance module, for after receiving that by the physical interface being connected with main process equipment in described ascending VLAN interface multicast joins message, in second-layer multicast forwarding list item, record the multicast group that main process equipment that described multicast carries in joining message need to add and receive the corresponding relation between the physical interface that described multicast joins message.
Described by the physical interface transmission query message being connected with main process equipment in ascending VLAN interface, specifically comprise: when described ascending VLAN interface enable IGMP/MLD agent functionality, by the physical interface being connected with main process equipment in described ascending VLAN interface, send query message.
Described by the physical interface transmission query message being connected with main process equipment in ascending VLAN interface, specifically comprise: if IGMP/MLD agent equipment is not received the query message from the network equipment by described ascending VLAN interface, self constructs query message, by the physical interface being connected with main process equipment in described ascending VLAN interface, sends the query message of self constructing; If IGMP/MLD agent equipment is received the query message from the network equipment by described ascending VLAN interface, the described query message from the network equipment of broadcast on each physical interface in described ascending VLAN interface; While sending the query message of self constructing before IGMP/MLD agent equipment, stop sending the query message of self constructing.
Also comprise: multicast message sending module, after recording the multicast group that main process equipment that described multicast carries in joining message need to add at second-layer multicast forwarding list item and receiving the corresponding relation between the physical interface that described multicast joins message, receive multicast message, utilize the multicast group of described multicast message to inquire about described second-layer multicast forwarding list item, the physical interface corresponding to multicast group of the described multicast message recording in the described second-layer multicast forwarding list item of foundation sends described multicast message to main process equipment.
Compared with prior art, the embodiment of the present invention at least has the following advantages: in the embodiment of the present invention, while having one or more physical interfaces to be connected with main process equipment in a plurality of physical interfaces in ascending VLAN interface, while disposing multicast user in ascending VLAN interface, IGMP/MLD agent equipment can be safeguarded second-layer multicast forwarding list item for the main process equipment that the physical interface in ascending VLAN interface connects, thereby the forwarding of management and control multicast message, then the main process equipment connecting for the physical interface in above-mentioned VLAN interface issues multicast message, to realize multicast message in the distribution as required of ascending VLAN interface.
Accompanying drawing explanation
Fig. 1 is operation IGMP/MLD agency's application scenarios schematic diagram;
Fig. 2 is the maintaining method flow chart of a kind of second-layer multicast forwarding list item of providing of the embodiment of the present invention;
Fig. 3 is the structural representation of a kind of IGMP/MLD agent equipment of providing of the embodiment of the present invention.
Embodiment
For problems of the prior art, the embodiment of the present invention provides a kind of maintaining method of second-layer multicast forwarding list item, and the method is applied to comprise in the network of the network equipment, IGMP/MLD agent equipment (being igmp proxy equipment or MLD agent equipment) and main process equipment.This IGMP/MLD agent equipment is connected with the network equipment by ascending VLAN interface, and this ascending VLAN interface is comprised of plural physical interface, and has physical interface to be connected with main process equipment in this plural physical interface.
The application scenarios schematic diagram that the Fig. 1 of take is the embodiment of the present invention, IGMP/MLD agent equipment is connected with the network equipment (S) by VLAN interface, and now this VLAN interface is upstream Interface, and this VLAN interface is ascending VLAN interface; In addition, IGMP/MLD agent equipment is connected with main process equipment 4 by Ethernet interface 1, by Ethernet interface 2, is connected with main process equipment 3, and now Ethernet interface 1 and Ethernet interface 2 are downstream interface.Wherein, this ascending VLAN interface is comprised of physical interface P1, physical interface P2 and physical interface P3, and physical interface P1 is connected with main process equipment 1, and physical interface P2 is connected with the network equipment (S), and physical interface P3 is connected with main process equipment 2.
As shown in Figure 2, the maintaining method of this second-layer multicast forwarding list item can comprise the following steps:
Step 201, IGMP/MLD agent equipment sends query message by the physical interface being connected with main process equipment in ascending VLAN interface; By the main process equipment of receiving query message, when having the demand that adds multicast group, return to multicast and join message, and multicast carries the multicast group that main process equipment need to add in joining message.
Under the application scenarios shown in Fig. 1, because the physical interface P1 in ascending VLAN interface is connected with main process equipment 1, physical interface P3 in ascending VLAN interface is connected with main process equipment 2, therefore, IGMP/MLD agent equipment sends query message by the physical interface P1 by being connected with main process equipment 1 in this ascending VLAN interface, and sends query message by the physical interface P3 being connected with main process equipment 2 in this ascending VLAN interface.Further, main process equipment 1 is after receiving query message, if main process equipment 1 has the demand that adds multicast group, main process equipment 1 sends multicast to IGMP/MLD agent equipment and joins message, and this multicast has at least carried the multicast group that main process equipment 1 need to add (multicast group address information) in joining message.Main process equipment 2 is after receiving query message, if main process equipment 2 has the demand that adds multicast group, main process equipment 2 sends multicast to IGMP/MLD agent equipment and joins message, and this multicast has at least carried the multicast group that main process equipment 2 need to add (multicast group address information) in joining message.
In a kind of execution mode of the embodiment of the present invention, IGMP/MLD agent equipment sends query message by the physical interface being connected with main process equipment in ascending VLAN interface, specifically comprise: IGMP/MLD agent equipment is when this ascending VLAN interface enable IGMP/MLD agent functionality, and IGMP/MLD agent equipment sends query message by the physical interface by being connected with main process equipment in this ascending VLAN interface.
Concrete, IGMP/MLD agent equipment can be monitored the enabled state of the IGMP/MLD agent functionality in ascending VLAN interface; Wherein, if the current IGMP/MLD agent functionality that enabled of this ascending VLAN interface, IGMP/MLD agent equipment records this ascending VLAN interface and has enabled IGMP/MLD agent functionality; If this ascending VLAN interface is current, do not enable IGMP/MLD agent functionality or currently removed to enable IGMP/MLD agent functionality, recording this ascending VLAN interface and do not enable IGMP/MLD agent functionality.When this ascending VLAN interface has enabled IGMP/MLD agent functionality, IGMP/MLD agent equipment sends query message by the physical interface by being connected with main process equipment in this ascending VLAN interface; When this ascending VLAN interface does not enable IGMP/MLD agent functionality, IGMP/MLD agent equipment will not need the physical interface by being connected with main process equipment in this ascending VLAN interface to send query message.
In a kind of execution mode of the embodiment of the present invention, IGMP/MLD agent equipment sends query message by the physical interface being connected with main process equipment in ascending VLAN interface, specifically comprise: IGMP/MLD agent equipment is monitored the physical interface being connected with main process equipment in this ascending VLAN interface, and periodically sends query message by the physical interface being connected with main process equipment in this ascending VLAN interface.Wherein, the listening mode for the physical interface being connected with main process equipment in this ascending VLAN interface, repeats no longer in detail to this in the embodiment of the present invention, as long as can listen to the physical interface being connected with main process equipment in this ascending VLAN interface.In addition, the transmission cycle of this query message can arrange arbitrarily according to actual needs, and the transmission cycle to this query message in the embodiment of the present invention repeats no longer in detail.
In a kind of execution mode of the embodiment of the present invention, IGMP/MLD agent equipment sends query message by the physical interface being connected with main process equipment in ascending VLAN interface, specifically comprise: if IGMP/MLD agent equipment does not receive the query message from the network equipment by this ascending VLAN interface, this IGMP/MLD agent equipment self structure query message, and the query message of self constructing by the physical interface transmission being connected with main process equipment in this ascending VLAN interface.If IGMP/MLD agent equipment receives the query message from the network equipment by this ascending VLAN interface, on this IGMP/MLD agent equipment each physical interface in this ascending VLAN interface, broadcast the query message from the network equipment.Owing to being that IGMP/MLD agent equipment is broadcasted the query message from the network equipment on each physical interface, so this query message will send by the physical interface being connected with main process equipment in this ascending VLAN interface.Further, while having sent the query message of self constructing before IGMP/MLD agent equipment, IGMP/MLD agent equipment will stop sending the query message of self constructing.
Above-mentioned " by the physical interface being connected with main process equipment in ascending VLAN interface, sending query message ", can on IGMP/MLD agent equipment, configure IGMP Snooping (spying upon) agreement/MLD Snooping agreement, and realize above-mentioned " sending query message by the physical interface being connected with main process equipment in ascending VLAN interface " function by IGMP Snooping agreement/MLD Snooping agreement.Wherein, above-mentioned IGMP Snooping agreement/MLD Snooping agreement generates second-layer multicast forwarding list item by the protocol massages of intercepting between the network equipment and main process equipment, thus the forwarding of management and control multicast message.
Based on IGMP Snooping agreement/MLD Snooping agreement, if IGMP/MLD agent equipment listens to the query message from the network equipment, IGMP/MLD agent equipment record receives that the interface of query message is router interface.Therefore,, if IGMP/MLD agent equipment is not received the query message from the network equipment by ascending VLAN interface, IGMP/MLD agent equipment can not record and in VLAN, have router interface; If IGMP/MLD agent equipment is received the query message from the network equipment by ascending VLAN interface, IGMP/MLD agent equipment can record and in VLAN, have router interface.Based on this, if there is not router interface in VLAN, IGMP/MLD agent equipment is not known and is not received the query message from the network equipment by ascending VLAN interface; If there is router interface in VLAN, IGMP/MLD agent equipment is known and self by ascending VLAN interface, is received the query message from the network equipment.
Step 202, when IGMP/MLD agent equipment receives that by the physical interface being connected with main process equipment in ascending VLAN interface multicast joins message (this multicast has carried the multicast group that main process equipment need to add in joining message), in second-layer multicast forwarding list item, record the multicast group that main process equipment that this multicast carries in joining message need to add and receive the corresponding relation between the physical interface that this multicast joins message.
For example, when main process equipment 1 and main process equipment 2 all need to add multicast group 1, IGMP/MLD agent equipment, after receiving that by physical interface P1 multicast from main process equipment 1 joins message, records multicast group (being the group address message of multicast group 1) that main process equipment 1 need to add and the corresponding relation between physical interface P1 in second-layer multicast forwarding list item; IGMP/MLD agent equipment receiving by physical interface P3 from the adding after multicast message of main process equipment 2, records multicast group (being the group address message of multicast group 1) that main process equipment 2 need to add and the corresponding relation between physical interface P3 in second-layer multicast forwarding list item.
Step 203, IGMP/MLD agent equipment is received multicast message, the multicast group inquiry second-layer multicast forwarding list item that utilizes this multicast message, the physical interface corresponding according to the multicast group of this multicast message recording in this second-layer multicast forwarding list item sends this multicast message to main process equipment.
For example, IGMP/MLD agent equipment is after the multicast message of receiving for multicast group 1, utilize the multicast group that multicast message is corresponding (being the group address message of multicast group 1) inquiry second-layer multicast forwarding list item, now find the corresponding physical interface P1 of group address message and the physical interface P3 of multicast group 1, so IGMP/MLD agent equipment will send multicast message to main process equipment by physical interface P1 and physical interface P3.
In sum, in the embodiment of the present invention, while having physical interface to be connected with main process equipment in ascending VLAN interface, while being deployed with multicast user in ascending VLAN interface, IGMP/MLD agent equipment can be safeguarded second-layer multicast forwarding list item for the main process equipment that the physical interface in ascending VLAN interface connects, thereby the forwarding of management and control multicast message, then the main process equipment connecting for the physical interface in ascending VLAN interface issues multicast message, to realize multicast message in the distribution as required of ascending VLAN interface.
Inventive concept based on same with said method, in the embodiment of the present invention, also provide a kind of the Internet multicast igmpinternet IGMP/ multicast listener to find MLD agent equipment, be used for safeguarding second-layer multicast forwarding list item, as shown in Figure 3, described IGMP/MLD agent equipment specifically comprises:
Query message sending module 11, sends query message for the physical interface by being connected with main process equipment in uplink virtual local area network (LAN) VLAN interface; Wherein, described IGMP/MLD agent equipment is connected with the network equipment by described ascending VLAN interface, and described ascending VLAN interface is comprised of plural physical interface, and has physical interface to be connected with main process equipment in described plural physical interface;
Forwarding-table item maintenance module 12, for after receiving that by the physical interface being connected with main process equipment in described ascending VLAN interface multicast joins message, in second-layer multicast forwarding list item, record the multicast group that main process equipment that described multicast carries in joining message need to add and receive the corresponding relation between the physical interface that described multicast joins message.
Described by the physical interface transmission query message being connected with main process equipment in ascending VLAN interface, specifically comprise: when described ascending VLAN interface enable IGMP/MLD agent functionality, by the physical interface being connected with main process equipment in described ascending VLAN interface, send query message.
Described by the physical interface transmission query message being connected with main process equipment in ascending VLAN interface, specifically comprise: if IGMP/MLD agent equipment is not received the query message from the network equipment by described ascending VLAN interface, self constructs query message, by the physical interface being connected with main process equipment in described ascending VLAN interface, sends the query message of self constructing; If IGMP/MLD agent equipment is received the query message from the network equipment by described ascending VLAN interface, the described query message from the network equipment of broadcast on each physical interface in described ascending VLAN interface; While sending the query message of self constructing before IGMP/MLD agent equipment, stop sending the query message of self constructing.
Described IGMP/MLD agent equipment also comprises:
Multicast message sending module 13, after recording the multicast group that main process equipment that described multicast carries in joining message need to add at second-layer multicast forwarding list item and receiving the corresponding relation between the physical interface that described multicast joins message, receive multicast message, utilize the multicast group of described multicast message to inquire about described second-layer multicast forwarding list item, the physical interface corresponding to multicast group of the described multicast message recording in the described second-layer multicast forwarding list item of foundation sends described multicast message to main process equipment.
Wherein, the modules of apparatus of the present invention can be integrated in one, and also can separatedly dispose.Above-mentioned module can be merged into a module, also can further split into a plurality of submodules.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add essential general hardware platform by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better execution mode.Understanding based on such, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, or the network equipment etc.) carry out the method described in each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device in embodiment can be distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.The module of above-described embodiment can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Disclosed is above only several specific embodiment of the present invention, and still, the present invention is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (8)
1. a maintaining method for second-layer multicast forwarding list item, is characterized in that, described method comprises:
The Internet multicast igmpinternet IGMP/ multicast listener finds that MLD agent equipment sends query message by the physical interface being connected with main process equipment in uplink virtual local area network (LAN) VLAN interface; Wherein, described IGMP/MLD agent equipment is connected with the network equipment by described ascending VLAN interface, and described ascending VLAN interface is comprised of plural physical interface, and has physical interface to be connected with main process equipment in described plural physical interface;
After described IGMP/MLD agent equipment receives that by the physical interface being connected with main process equipment in described ascending VLAN interface multicast joins message, in second-layer multicast forwarding list item, record the multicast group that main process equipment that described multicast carries in joining message need to add and receive the corresponding relation between the physical interface that described multicast joins message.
2. the method for claim 1, is characterized in that, described IGMP/MLD agent equipment sends query message by the physical interface being connected with main process equipment in ascending VLAN interface, specifically comprises:
Described IGMP/MLD agent equipment, when described ascending VLAN interface enable IGMP/MLD agent functionality, sends query message by the physical interface being connected with main process equipment in described ascending VLAN interface.
3. the method for claim 1, is characterized in that, described IGMP/MLD agent equipment sends query message by the physical interface being connected with main process equipment in ascending VLAN interface, specifically comprises:
If described IGMP/MLD agent equipment is not received the query message from the network equipment by described ascending VLAN interface, described IGMP/MLD agent equipment self structure query message, and the query message of self constructing by the physical interface transmission being connected with main process equipment in described ascending VLAN interface;
If described IGMP/MLD agent equipment is received the query message from the network equipment by described ascending VLAN interface, on described IGMP/MLD agent equipment each physical interface in described ascending VLAN interface, broadcast the described query message from the network equipment; While sending the query message of self constructing before described IGMP/MLD agent equipment, stop sending the query message of self constructing.
4. the method for claim 1, it is characterized in that, described IGMP/MLD agent equipment also comprises after recording the multicast group that main process equipment that described multicast carries in joining message need to add and receive the corresponding relation between the physical interface that described multicast joins message in second-layer multicast forwarding list item:
Described IGMP/MLD agent equipment is received multicast message, utilize the multicast group of described multicast message to inquire about described second-layer multicast forwarding list item, the physical interface corresponding to multicast group of the described multicast message recording in the described second-layer multicast forwarding list item of foundation sends described multicast message to main process equipment.
5. the Internet multicast igmpinternet IGMP/ multicast listener is found a MLD agent equipment, for safeguarding second-layer multicast forwarding list item, it is characterized in that, described IGMP/MLD agent equipment comprises:
Query message sending module, sends query message for the physical interface by being connected with main process equipment in uplink virtual local area network (LAN) VLAN interface; Wherein, described IGMP/MLD agent equipment is connected with the network equipment by described ascending VLAN interface, and described ascending VLAN interface is comprised of plural physical interface, and has physical interface to be connected with main process equipment in described plural physical interface;
Forwarding-table item maintenance module, for after receiving that by the physical interface being connected with main process equipment in described ascending VLAN interface multicast joins message, in second-layer multicast forwarding list item, record the multicast group that main process equipment that described multicast carries in joining message need to add and receive the corresponding relation between the physical interface that described multicast joins message.
6. IGMP/MLD agent equipment as claimed in claim 5, is characterized in that,
Described by the physical interface transmission query message being connected with main process equipment in ascending VLAN interface, specifically comprise: when described ascending VLAN interface enable IGMP/MLD agent functionality, by the physical interface being connected with main process equipment in described ascending VLAN interface, send query message.
7. IGMP/MLD agent equipment as claimed in claim 5, is characterized in that,
Described by the physical interface transmission query message being connected with main process equipment in ascending VLAN interface, specifically comprise: if IGMP/MLD agent equipment is not received the query message from the network equipment by described ascending VLAN interface, self constructs query message, by the physical interface being connected with main process equipment in described ascending VLAN interface, sends the query message of self constructing; If IGMP/MLD agent equipment is received the query message from the network equipment by described ascending VLAN interface, the described query message from the network equipment of broadcast on each physical interface in described ascending VLAN interface; While sending the query message of self constructing before IGMP/MLD agent equipment, stop sending the query message of self constructing.
8. IGMP/MLD agent equipment as claimed in claim 5, is characterized in that, also comprises:
Multicast message sending module, after recording the multicast group that main process equipment that described multicast carries in joining message need to add at second-layer multicast forwarding list item and receiving the corresponding relation between the physical interface that described multicast joins message, receive multicast message, utilize the multicast group of described multicast message to inquire about described second-layer multicast forwarding list item, the physical interface corresponding to multicast group of the described multicast message recording in the described second-layer multicast forwarding list item of foundation sends described multicast message to main process equipment.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018177353A1 (en) * | 2017-03-29 | 2018-10-04 | 中兴通讯股份有限公司 | Multicast data forwarding method and apparatus |
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| CN109218187B (en) * | 2018-09-30 | 2020-12-01 | 中国船舶重工集团公司第七0九研究所 | Method and device for updating two-layer multicast forwarding table |
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| CN103957164B (en) | 2018-08-28 |
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