CN101873250A - Data retransmission method and device - Google Patents
Data retransmission method and device Download PDFInfo
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- CN101873250A CN101873250A CN200910137239A CN200910137239A CN101873250A CN 101873250 A CN101873250 A CN 101873250A CN 200910137239 A CN200910137239 A CN 200910137239A CN 200910137239 A CN200910137239 A CN 200910137239A CN 101873250 A CN101873250 A CN 101873250A
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Abstract
The invention provides a data retransmission method and a device. The data retransmission method comprises the following steps: a retransmission port receives a multicasting message for requesting for joining the group, and sets the corresponding relation between the outer layer label and the retransmission port according to the multicasting address of the multicasting message and the identification of the retransmission port; and according to the corresponding relation, the retransmission port corresponding to the outer layer label retransmits data of the multicasting message. The invention overcomes the defect that IGMP Snooping can not normally operate after the equipment port uses QingQ or SVLAN technology in the prior art, so that the multicasting message can be retransmitted normally.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of data forwarding method and device.
Background technology
Along with the development of metropolitan area network etherization, the problem relevant with management with user's location is more and more outstanding.For example, the message of present one deck label can only have 4096 users, and this can not satisfy present demand.Therefore, operator has proposed QinQ (802.1Q-in-802.1Q) technology and VLAN (Selective Virtual Local AreaNetwork abbreviates SVLAN as) technology.
IGMP snooping (Internet Group Management Protocol Snooping abbreviates IGMP Snooping as) is the multicast tied mechanism that operates on the layer 2 ethernet switch, is used for management and control multicast group.When not moving IGMP Snooping, multicast message will be at L 2 broadcast.Behind the operation IGMP Snooping, message will be no longer at L 2 broadcast, but carries out Layer 2 Multicast.That is, IGMP Snooping is mapped as a VLAN with the active members of same multicast group, after device port receives multicast packet, only transmits to the pairing member of vlan of this multicast group.
But after device port had used QinQ technology or SVLAN technology, the active members of the original same multicast group of safeguarding of IGMPSnooping and the mapping relations of VLAN will change, thereby cause IGMP Snooping normally to move.Yet, effective solution is not proposed as yet at present at this problem.
Summary of the invention
Propose the present invention at the above-mentioned problem that IGMPSnooping can't normally move after device port has used QinQ technology or SVLAN technology, the present invention aims to provide a kind of improved message and transmits scheme, to address the above problem.
To achieve these goals, according to an aspect of the present invention, provide a kind of data forwarding method.
Data forwarding method according to the present invention comprises: transmit the multicast message that port receives request adding group, according to the multicast address of this multicast message and the sign of forwarding port outer layer label and the corresponding relation of transmitting port are set; According to corresponding relation, in data corresponding to the forwarding port forwarding multicasting message of outer layer label.
Wherein, after port receives the multicast message of request adding group,, this multicast message of transmitting the port reception is added outer layer label according to the sign of transmitting port.
In addition, after the message interpolation outer layer label of transmitting the port reception, said method also comprises: multicast message is forwarded to the monitoring module; Monitor module records and from the message that receives, parse outer layer label sign and vpn label sign.And, monitor module and judge whether multicast message is transmitted by SVLAN or QINQ rule; Be judged as under the situation that is, monitoring module record vpn label sign in the node of outer tag identifier and forwarding port composition.
The above-mentioned operation that outer layer label and the corresponding relation of transmitting port are set further comprises: transmit port and all write down vpn label and identify after pairing request leaves the multicast message of group having received, remove and group corresponding outer layer label and the corresponding relation of transmitting port.
Preferably, represent the above-mentioned corresponding relation that outer layer label and described forwarding port are set with the form of form.
To achieve these goals, according to a further aspect in the invention, provide a kind of data forwarding device.
Data forwarding device according to the present invention comprises: module is set, is used for according to the multicast address of the multicast message of transmitting the request adding group that port receives and the sign of transmitting port outer layer label and the corresponding relation of transmitting port being set; Sending module is used for according to the corresponding relation that module is provided with is set, in the data corresponding to the forwarding port forwarding multicasting message of outer layer label.
Said apparatus also comprises: add module, be used for according to the sign of transmitting port, this is transmitted the multicast message interpolation outer layer label that port receives; And, being used to resolve the outer layer label sign of multicast message and the monitoring module of vpn label sign, this monitoring module also is used for the vpn label sign of record multicast message on the node that the outer layer label that adds identifies and the forwarding port is formed; Remove module, be used to remove and organize corresponding outer layer label and the corresponding relation of transmitting port.
By means of technique scheme one of at least, the present invention transmits with the corresponding relation of transmitting port according to default outer layer label and has added the outer layer label multicast message, and the whole multicast messages in group are when all needing to leave, just remove outer layer label and the corresponding relation of transmitting port, overcome the problem that IGMP Snooping can't normally move after device port has used QinQ technology or SVLAN technology of the prior art, and then multicast message is normally transmitted.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the data forwarding method of the embodiment of the invention;
Fig. 2 is according to the flow chart that the hardware forwarding table item is set in the data forwarding method of the embodiment of the invention;
Fig. 3 is the flow chart according to the removing hardware forwarding table item in the data forwarding method of the embodiment of the invention;
Fig. 4 is a system construction drawing of using the data forwarding method of the embodiment of the invention;
Fig. 5 is the block diagram according to the data forwarding device of the embodiment of the invention;
Fig. 6 is the block diagram of data forwarding device according to the preferred embodiment of the invention.
Embodiment
Functional overview
As mentioned above, because after device port had used QinQ technology or SVLAN technology, the active members of the original same multicast group of safeguarding of IGMP Snooping was just different with the corresponding relation of VLAN, this has caused IGMP Snooping normally to move.Based on this, the invention provides a kind of message and transmit scheme, the basic thought of this scheme is: according to default outer layer label and the corresponding relation of transmitting port, the outer layer label multicast message has been added in forwarding, and the whole multicast messages in group are when all needing to leave, just remove outer layer label and the corresponding relation of transmitting port, overcome the problem that IGMP Snooping can't normally move after device port has used QinQ technology or SVLAN technology of the prior art, and then multicast message is normally transmitted, filled up the blank of prior art.
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.Need to prove that if do not conflict, embodiment and the feature among the embodiment among the application can make up mutually.
Method embodiment
According to the embodiment of the invention, provide a kind of data forwarding method.
Fig. 1 is the flow chart according to the data forwarding method of the embodiment of the invention, and as shown in Figure 1, the flow process of this data forwarding method comprises step 102 and 104:
Step 102 is transmitted the multicast message that port receives request adding group, according to the multicast address (mac) of this multicast message and the sign of forwarding port outer layer label and the corresponding relation of transmitting port is set;
Need to prove, for convenience of description, in Fig. 1, illustrated and described the technical scheme of method embodiment of the present invention, can in computer system, carry out such as a set of computer-executable instructions in the step shown in Fig. 1 with the form of step.Though figure 1 illustrates logical order, in some cases, can carry out step shown or that describe with the order that is different from herein.
Below above-mentioned two steps are described in detail.
(1) step 102
Transmit port after the multicast message that receives request adding group,, this multicast message is added outer layer label at first according to the sign (that is, vlan id) of transmitting port; Then, this forwarding port is forwarded to the multicast message that adds outer layer label and monitors module (promptly, IGMP snooping module of the prior art), this monitors the vpn label sign of module this multicast message of record on the node of being made up of outer layer label sign of adding and forwarding port.The forwarding port here is meant the Custom mouth.
Preferably, this outer layer label and the corresponding relation of transmitting port can be set with the form of hardware forwarding table, promptly, for each list item in the hardware forwarding table, outer layer label wherein is corresponding with a plurality of forwarding ports, wherein, these transmit port at the vlan that this outer layer label identified, and these transmit the multicast message that port also receives the adding group.
(2) step 104
After being provided with outer layer label and transmitting the corresponding relation of port, in the vlanid of appointment, if the multicast packet of above-mentioned multicast message request is arranged, this multicast packet will be transmitted according to the corresponding relation that is provided with.
By above description as can be seen, by default outer layer label and the corresponding relation of transmitting port, can so that multicast message transmit normally.
Said method also comprises the operation of removing outer layer label and transmitting the corresponding relation of port, promptly, port has all write down vpn label and has identified after pairing request leaves the multicast message of group having received, and removes and this group corresponding outer layer label and the corresponding relation of transmitting port.That is to say, only when the corresponding multicast message of vpn label sign of monitoring module records all asks to leave, just can remove this group corresponding outer layer label and the corresponding relation of transmitting port.
In order to understand the present invention better, the technical scheme of the embodiment of the invention is described in further detail below.
Based on the correct equipment that has disposed SVLAN or QINQ, the data forwarding method that the embodiment of the invention provides comprises following processing procedure:
(1) processing of customer mouth
The customer mouth of equipment (being above-mentioned forwarding port) receives when being used to send the IGMP report message of request adding group, at first the message that receives is added outer layer label, afterwards, sends to IGMP snooping module; In the prior art, the message of customer mouth reception all is just to add outer layer label when the uplink mouth is transmitted;
(2) processing of IGMP snooping module
IGMP snooping resume module receives the IGMP report message that has outer layer label, and concrete processing procedure may further comprise the steps a to c:
Step a, IGMP snooping module judges according to the outer layer label of this message whether this message is the message that send by on SVLAN or the QINQ rule;
Step b, if, the vlan id that then parses outer layer label and vpn label respectively and identified; And write down the vlan id of outer layer label and label memory sign respectively, wherein, the vlan id that outer layer label identified is used for the forwarding of following steps, and the vlan id that vpn label identified is recorded in the node of forming with outer vlan id and customer mouth;
Step c is forwarded to the uplink mouth with this message, particularly, transmits operation and comprises transparent transmission and agency, and wherein, transparent transmission is directly will to forward from the uplink mouth from the message that has outer layer label that the customer mouth receives; The agency rebuilds a message that has double-layer label by equipment, forwards from the uplink mouth then; If the rule of SVLAN is not specified tag, then do not need to add outer tag;
(3) the hardware forwarding table item is set
Multicast mac (Media Access Control according to this multicast message, medium access control system) the vlan id that identified of address and outer layer label, hardware forwarding table is set, wherein, the hardware forwarding table item comprises: multicast mac address, the vlan id that is identified with outer layer label and the port that receives message;
After hardware forwarding table was finished, if the multicast traffic stream that has this IGMP message to be asked in the vlan of appointment id, this multicast traffic stream will be transmitted according to the port of indicating in this hardware forwarding table;
(4) remove the hardware forwarding table item
When configuration QINQ or SVLAN, if the vlan of the corresponding a plurality of internal layers of user on this equipment (node that outer tag and customer mouth constitute), then ought receive the correspondence under this user internal layer vlan leave message (promptly, the leave message) time, can not remove this user on this equipment, just transmit this leave message that receives to the uplink mouth, only when the leave message that last the internal layer vlan that receives this user's correspondence sends, just can make this user offline on this equipment, and remove the relevant hardware forwarding-table item.
Further describe above-mentioned setting and remove the process of hardware forwarding table item below in conjunction with Fig. 2 and Fig. 3.Wherein, Fig. 2 is according to the flow chart that the hardware forwarding table item is set in the data forwarding method of the embodiment of the invention, and Fig. 3 is the flow chart according to the removing hardware forwarding table item in the data forwarding method of the embodiment of the invention.
As shown in Figure 2, the process that the hardware forwarding table item is set comprises step 201-208:
Step 201 receives IGMP multicast protocol report message from the customer mouth;
Step 202 is added outer tag to the IGMP multicast protocol message that receives, and on give IGMP snooping module;
Step 203, IGMP snooping module judge whether the IGMP message is the message that send by on QINQ or the SVLAN rule, and promptly execution in step 204;
Step 204, IGMP snooping module judge whether the IGMP message has disposed QINQ or SVLAN, if judged result then proceeds to step 206 for being, otherwise, proceed to step 205;
Step 205, the vlan id that IGMP snooping module records internal layer tag is identified;
Step 206, the vlan id that the outer tag of IGMP snooping module records is identified, and under node (outer tag+customer promptly goes up the node that data are made up of outer layer label sign of adding and port), write down corresponding internal layer tag;
Step 207, IGMP snooping module is handled as parameter with the outer vlan id of record, and transmits to the uplink port;
Step 208 is provided with the hardware forwarding table item according to the outer vlan id that writes down.
Below describe the process of removing the hardware forwarding table item, as shown in Figure 3, the process of this removing hardware forwarding table item comprises that step 301 is to 310:
Step 301 receives IGMP multicast protocol leave message from the customer mouth;
Step 302 is added outer tag to the IGMP multicast protocol message that receives, and on give IGMP snooping module;
Step 303, IGMP snooping module judge whether inspection IGMP message is the message that send by on QINQ or the SVLAN, and promptly execution in step 304;
Step 304, IGMP snooping module judge whether the IGMP message has disposed QINQ or SVLAN, if judged result then proceeds to step 306 for being, otherwise, proceed to step 305;
Step 305, according to the vlan id that tag identified, deletion relevant hardware list item, and proceed to step 310;
Step 306 according to the vlan id that outer tag identified, is checked the node (outer tag+customer promptly goes up the node that data are made up of outer layer label sign of adding and port) of appointment, whether also has the internal layer vlan id of record, and promptly execution in step 307;
Step 307 judges whether unwritten internal layer vlan id, if exist, then proceeds to step 308, otherwise, proceed to step 309;
Step 308 according to the outer vlan id deletion hardware forwarding table item of IGMP message, and proceeds to step 309;
Step 309, IGMP snooping module is transmitted the leave message to the uplink port;
Step 310 is carried out the former processing flow process of IGMP snooping module.
System configuration below in conjunction with shown in Figure 4 describes in further detail the embodiment of the invention.
As shown in Figure 4, device A has disposed the QINQ technology, and port 5 is customer mouths, and PVID (Port vlan id promptly gives tacit consent to vlan id) is 100; Port 6 is uplink mouths, belongs to vlan 100 in the tag mode.When IGMP multicast protocol message (can the abbreviate multicast message as) request that receives from port 5 adds a group (224.1.1.1), it is 100 outer layer labels that port 5 adds a value at first for this multicast message, set up following forwarding-table item: multicast group mac (0100.5e01.0101) then in the hardware forwarding table in device A, vlan (100), outbound port (port 5).
When in vlan 100, the multicast data message of multicast group 224.1.1.1 being arranged, will forward from port 5.
Equipment B is connected with three terminals, and these three terminals belong to different vlan respectively.In vlan separately, these three terminals are transmitted IGMP by port 4 and are joined message.When the customer mouth on the multicast data message slave unit A of multicast group 224.1.1.1 is transmitted, multicast data message can remove outer layer label (promptly, tag100), only stay internal layer tag 10,20,30, on equipment B, be transmitted to different vlan respectively, then, port one, 2,3 receives multicast data message separately respectively.
After two terminals (being terminal 1 and terminal 2) of vlan 10,20 sent the leave message, the forwarding-table item on the device A can not be eliminated.At this moment, the terminal of vlan 30 (being terminal 3) still can receive multicast traffic stream; When the vlan30 terminal also sent leave message, device A just can be removed corresponding vlan100 and port 5 corresponding list items.
To describe the example of the processing procedure of above-mentioned setting and removing hardware forwarding table item based on concrete scene shown in Figure 4 in detail below.
(1) the hardware forwarding table item is set
Terminal 1, terminal 2, terminal 3 send three IGMP report messages respectively, request adding group 224.1.1.1.On equipment B, set up three forwarding-table items respectively:
01005e010101 vlan?10 port4
01005e010101 vlan?20 port4
01005e010101 vlan?30 port4
The port4 of B equipment transmits above-mentioned three IGMP report messages in single tag mode.
The port5 of device A adds outer tag 100 for respectively these three messages, and is forwarded to the IGMP snooping resume module on the device A after receiving three three messages that have tag vlan10, vlan 20, a vlan 30.IGMP snooping module writes down the value (for example, the value of tag 10) of vpn label when receiving the message of the two tag of first band, set up a forwarding-table item according to outer tag100:
01005e010101 vlan?100 port5
The message of latter two that receives couple tag 100 20 and tag 100 30 no longer is provided with hardware table item, only need write down 20,30 these two values under the node of this two crux words appointment of vlan100, port5.Then, transmit the message of these three two tag to the uplink mouth.
(2) remove the hardware forwarding table item
Terminal 1, terminal 2, terminal 3 send three IGMP leave messages respectively, and group 224.1.1.1 is left in request, and three forwarding-table items on the equipment B are eliminated.
Transmit three IGMP report messages at port4 in single tag mode on the B equipment.
After receiving these three three messages that have tag vlan10, vlan 20, a vlan30 on the port5 of device A, add outer tag 100 respectively for these three messages, and be forwarded to the IGMP snooping resume module on the device A.
IGMP snooping module is when receiving the message of the two tag of first band, internal layer tag is 10, number that has internal layer vlan and corresponding value 10,20,30 according to record under the node of outer tag 100 and port5 appointment are done corresponding processing, when receiving preceding two leave message, just transmit the message that has two tag 100 10, tag 100 20 to the uplink mouth, and do not remove the hardware forwarding table item, when receiving the message of last tag 100 30, remove the hardware forwarding table item, and transmit two tag messages of tag 100 30 to the uplink mouth.
Need to prove that basic identical with the handling process under the QINQ environment in the handling process under the environment of SVLAN, different is the outer tag difference of adding when the customer mouth receives IGMP multicast protocol message.Under the QINQ environment, the outer tag of interpolation is the PVID value of customer mouth.Under the environment of SVLAN, by the outer tag of SVLAN rule configuration interpolation.
Device embodiment
According to the embodiment of the invention, a kind of data forwarding device is provided, preferably, this device is used to realize the method described in the said method embodiment, for example, can realize forwarding of data based on flow process shown in Fig. 1,2,3 and scene shown in Figure 4.
Fig. 5 is the block diagram according to the data forwarding device of the embodiment of the invention, as shown in Figure 5, this device comprises: module 1 and sending module 2 are set, wherein, module 1 is set, and the sign that is used for the multicast address of multicast message of the request adding group that receives according to port and port is provided with the corresponding relation of outer layer label and port; Sending module 2 is connected to module 1 is set, and is used for according to the corresponding relation that module 1 is provided with is set, in the data corresponding to the port forwarding multicasting message of outer layer label.
By above description as can be seen, by sending module according to the corresponding relation that module is provided with is set, the data of forwarding multicasting message have solved the problem that IGMP Snooping can't normally move after device port has used QinQ technology or SVLAN technology of the prior art.
Said apparatus also comprises interpolation module 3 shown in Figure 6, monitors module 4 (being the IGMP snooping module among the said method embodiment) and removes module 5, wherein: add module 3, be used for the sign according to port, the multicast message that this port is received adds outer layer label; Monitor outer layer label sign and vpn label sign that module 4 is used to resolve multicast message, and the label memory that writes down multicast message on the node that the outer layer label sign of adding and port are formed identifies; Remove module 5, be connected to module 1 is set, be used to remove and organize corresponding outer layer label and the corresponding relation of transmitting port.
In practical operation, can also comprise being connected to the forwarding module (not shown) of adding module 3, be used for being forwarded to and monitoring module 4 with adding multicast message that module 3 added outer layer label.
Above-mentioned the concrete operations that module is provided with corresponding relation are set can be with reference to the associated description of the step 102 among the said method embodiment; In specific implementation process, this corresponding relation can be that the form with form exists, and the description of the corresponding relation that exists with the form of form also can repeat no more here with reference to the associated description that the hardware forwarding table item is set among the said method embodiment.In addition, other each module operating process particularly can repeat no more here with reference to the associated description among the said method embodiment.
In sum, by corresponding relation according to outer layer label that is provided with and forwarding port, the outer layer label multicast message has been added in forwarding, and the whole multicast messages in group are when all needing to leave, just remove outer layer label and the corresponding relation of transmitting port, overcome the problem that IGMP Snooping can't normally move after device port has used QinQ technology or SVLAN technology of the prior art, and then multicast message is normally transmitted, filled up the blank of prior art.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a data forwarding method is characterized in that, described method comprises:
Transmit the multicast message that port receives request adding group, the corresponding relation of outer layer label and described forwarding port is set according to the sign of the multicast address of this multicast message and described forwarding port;
According to described corresponding relation, in the data of transmitting described multicast message corresponding to the forwarding port of described outer layer label.
2. method according to claim 1 is characterized in that, after described forwarding port received the multicast message of request adding group, described method also comprised:
According to the sign of described forwarding port, described multicast message is added outer layer label.
3. method according to claim 2 is characterized in that, after the message interpolation outer layer label to described forwarding port reception, described method also comprises:
Described multicast message is forwarded to the monitoring module;
Described monitoring module records parses outer layer label sign and vpn label sign from the message that receives.
4. method according to claim 3 is characterized in that, described method also comprises:
Described monitoring module judges whether described multicast message is transmitted by SVLAN or QINQ rule; Be judged as under the situation that is, described monitoring module is the described vpn label sign of record in the node of outer tag identifier and forwarding port composition.
5. method according to claim 4 is characterized in that, the operation that the corresponding relation of outer layer label and forwarding port is set further comprises:
Received at described forwarding port and all to have write down vpn label and identify after pairing request leaves described group multicast message, removed and described group of corresponding outer layer label and the corresponding relation of transmitting port.
6. according to each described method in the claim 1 to 5, it is characterized in that described method also comprises:
Represent the described corresponding relation that outer layer label and described forwarding port are set with the form of form.
7. a data forwarding device is characterized in that, described device comprises:
Module is set, is used for being provided with the corresponding relation of outer layer label and described forwarding port according to the sign of the multicast address of the multicast message of transmitting the request adding group that port receives and described forwarding port;
Sending module is used for according to described the corresponding relation that module is provided with being set, in the data of transmitting described multicast message corresponding to the forwarding port of described outer layer label.
8. device according to claim 7 is characterized in that, described device also comprises:
Add module, be used for sign, this is transmitted the multicast message interpolation outer layer label that port receives according to described forwarding port.
9. device according to claim 8, described device also comprises the monitoring module that outer layer label identifies and vpn label identifies that is used to resolve described multicast message, it is characterized in that described monitoring module is used for the vpn label sign of the described multicast message of record on the node of the outer layer label sign of described interpolation and forwarding port composition.
10. device according to claim 7 is characterized in that, described device also comprises:
Remove module, be used to remove and described group of corresponding outer layer label and the corresponding relation of transmitting port.
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| CN200910137239A CN101873250A (en) | 2009-04-27 | 2009-04-27 | Data retransmission method and device |
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| CN200910137239A CN101873250A (en) | 2009-04-27 | 2009-04-27 | Data retransmission method and device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102647359A (en) * | 2012-04-26 | 2012-08-22 | 网经科技（苏州）有限公司 | Method for implementing network bridge IGMP (internet group management protocol) Snooping based on DSA TAG (digital signature algorithm tag) and user-defined protocol stack |
| CN103457861A (en) * | 2013-08-23 | 2013-12-18 | 深圳市共进电子股份有限公司 | IGMP Snooping realizing method of ONU based on VLAN |
| CN104113484A (en) * | 2013-04-19 | 2014-10-22 | 中兴通讯股份有限公司 | Message forwarding processing method and device |
| WO2017124712A1 (en) * | 2016-01-18 | 2017-07-27 | 中兴通讯股份有限公司 | Message generating method, message forwarding method and device |
-
2009
- 2009-04-27 CN CN200910137239A patent/CN101873250A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102647359A (en) * | 2012-04-26 | 2012-08-22 | 网经科技（苏州）有限公司 | Method for implementing network bridge IGMP (internet group management protocol) Snooping based on DSA TAG (digital signature algorithm tag) and user-defined protocol stack |
| CN102647359B (en) * | 2012-04-26 | 2014-10-08 | 网经科技（苏州）有限公司 | Method for implementing network bridge IGMP (internet group management protocol) Snooping based on DSA TAG (digital signature algorithm tag) and user-defined protocol stack |
| CN104113484A (en) * | 2013-04-19 | 2014-10-22 | 中兴通讯股份有限公司 | Message forwarding processing method and device |
| CN103457861A (en) * | 2013-08-23 | 2013-12-18 | 深圳市共进电子股份有限公司 | IGMP Snooping realizing method of ONU based on VLAN |
| WO2017124712A1 (en) * | 2016-01-18 | 2017-07-27 | 中兴通讯股份有限公司 | Message generating method, message forwarding method and device |
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Application publication date: 20101027 |