CN1283075C - Method for forwarding information when a media access control layer loadbearing another media access control layer - Google Patents
Method for forwarding information when a media access control layer loadbearing another media access control layer Download PDFInfo
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- CN1283075C CN1283075C CN 03128417 CN03128417A CN1283075C CN 1283075 C CN1283075 C CN 1283075C CN 03128417 CN03128417 CN 03128417 CN 03128417 A CN03128417 A CN 03128417A CN 1283075 C CN1283075 C CN 1283075C
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Abstract
The present invention provides a method for retransmitting information in the process of bearing the other medium access control layer by one medium access control layer, which comprises the following steps: receiving a message containing the service message information of a borne layer network by the fringe node of a bearing layer network receive; automatically establishing a mapping table of corresponding retransmission relation between the source MAC address of the service message and the MAC address of the network source node of the bearing layer the received message according to the received message; retransmitting the message containing the service message information of a borne layer network to the bearing layer network according to the mapping table. The present invention can intelligently and dynamically determine the objective node of the service message of the borne layer network in the bearing layer network in the process of bearing the other medium access control layer by one medium access control layer to correctly transmit the service information of the network in the process of the interconnection of networks with different types and improve the sharing capability of network resources.
Description
Technical field
The present invention relates to the network interconnection technology, be specifically related to the retransmission method of media access control layer information when carrying another media access control layer.
Background technology
Along with development of internet technology, in order to satisfy different business demands, various types of networks have appearred.Such as geographic Location Classification Local Area Network is arranged by network, metropolitan area network (MAN), wide area network (WAN), by the topology of networks classification Star Network is arranged, loop network, bus-network, by the transmission medium classification wired network is arranged, optical networking, wireless network, by the communication mode classification point-to-point transmission network is arranged, the broadcast type transmission network, the purpose classification of using by network has the shared resource net, the data processing net, data transmission network, by the method for service classification client/server network is arranged, peer-to-peer network, also have such as the ATM net of classifying by the characteristics of message transmission mode, and some non-normal sorting techniques: as enterprise network, campus network etc.Resilient Packet Ring (RPR), Ethernet (Ethernet), wireless lan (wlan) and token ring a lot of network tranmission techniques such as (Token Ring) all are based on IEEE 802 systems, but be applied in different field, for example: ETHERNET and TokenRing are that the office building network, the WLAN that use always are that regional WLAN (wireless local area network), RPR can be used in the transmission of carrying out the high efficient band width utilization in the metropolitan area network.
In order to realize resource-sharing in larger scope, networks of different type need be linked together by certain network equipment, realize the intercommunication of heterogeneous networks.Interconnect equipment mainly comprises repeater, bridge, switch, router and gateway.
Bridge (Bridge) claim bridger again, is operated on the second layer (data link layer) of OSI (open system is interconnected) reference model, realizes the store-and-forward unit of local area network interconnection on link layer.Bridge receives mac frame from local area network (LAN), after opening, check and correction, the verification, re-assemblies by the form of another local area network (LAN), mails to its physical layer.Because bridge is link layer device, therefore the added header of the above layer protocol of deal with data link layer not can not be done the modification of these levels.
But in the heterogeneous networks interconnection, this demand is often arranged, be about to a kind of media access control layer, carry another kind of media access control layer business as bearer network or transmission network.At this moment just the message of upper layer network need be encapsulated in the message payload of bearer network and go.The business of having carried WLAN such as the node A of the backbone network that uses Ethernet, the message of WLAN is mapped in the Ethernet goes, network by Ethernet is sent to Node B with message,, and is sent in the wlan network in Node B zone and goes the reduction of the message of WLAN by Node B.Seem from business network that so directly send over as professional, bearer network is transparent.
Problem is that the network as bearing bed might not be the connection of point-to-point, such as a bearer network A, B, four nodes of C, D is arranged, and each node all has the MAC Address of oneself.And destination address that oneself is also arranged by the loaded service network message.If A has received the message of the network of an operation layer, need then to judge that this message will send to which node of bearing bed network.
At present, usually the method that adopts is that equipment is carried out manual configuration, promptly according to the port of the backbone node access service of access service layer, and attached information in the message, manual to equipment disposition, determine this business should send to which node of bearing bed network.The content of configuration may comprise: the target MAC (Media Access Control) address of the port numbers of access service node device, business, professional vlan information etc.Device port has received that message directly goes to send according to the rule of manual configuration, and what bearer network was seen is exactly the connection of wire one by one.Adopt this method, under the various situation of traffic carrying capacity, can make the workload of manual configuration very big, become how much numbers to increase; In addition, this collocation method also can make the flexibility of Network be restricted, such as the access of a port probably just can only with a node communication of bearer network, can not satisfy the demand of multiple business.
Summary of the invention
The objective of the invention is to overcome the above-mentioned shortcoming of prior art, the retransmission method of information when providing a media access control layer to carry another media access control layer, wherein, a media access control layer is the bearing bed network, another media access control layer is by the bearing bed network, and two described media access control layer types can be identical, also can be different, it is characterized in that described method comprises step:
The fringe node of described bearing bed network, promptly insert described by the node of bearing bed Network, receive comprise described by the message of bearing bed Network message information;
Describedly comprise described message and set up one and comprise described according to what receive by the corresponding mapping table that concerns of transmitting of the source MAC of bearing bed Network message with the MAC Address of bearing bed network source node by bearing bed Network message information;
Include described to described bearing bed forwarded according to described mapping table by the message of the service message information of bearing bed network.
Alternatively, the fringe node of described bearing bed network, promptly insert by the node of bearing bed Network, receive and to comprise described step by the message of bearing bed Network message information and comprise step: the fringe node of described bearing bed network receives during as the bearing bed network source node described by the service message of bearing bed network; The fringe node of described bearing bed network receives during as bearing bed network destination node by the source node of described bearing bed network described by the bearing bed message of the source node information of the service message information of bearing bed network and described bearing bed network comprising of transmitting.
Preferably, describedly describedly comprise described message by bearing bed Network message information and set up one and describedly comprised step by the source MAC of bearing bed Network message with the corresponding step of transmitting the mapping table of relation of the MAC Address of bearing bed network source node according to what receive: foundation comprises described by the source MAC of bearing bed Network message, described by the described mapping table of bearing bed Network message characteristic field and described bearing bed network source node MAC Address list item.
Alternatively, describedly describedly comprise described message and set up one and describedly comprised step with the corresponding step of transmitting the mapping table of relation of the MAC Address of bearing bed network source node by the source MAC of bearing bed Network message by bearing bed Network message information according to what receive: the fringe node of described bearing bed network, set up and safeguard described mapping table automatically according to the message information of reception.
Preferably, the fringe node of described bearing bed network, set up automatically and safeguard that the step of described mapping table comprises step according to the message information that receives:
The fringe node of described bearing bed network is described by the bearing bed message of the source node information of the service message information of bearing bed network and described bearing bed network comprising of transmitting according to the source node by described bearing bed network that receives during as bearing bed network destination node, whether search has in the described mapping table and the described list item that is complementary by the source MAC in the bearing bed Network message that receives
If have, then keep former list item,
If no, in described mapping table, add the described list item that is concerned by the corresponding forwarding of the source MAC of bearing bed Network message with the MAC Address of the source node of described bearing bed network.
Preferably, describedly include described step according to described mapping table to described bearing bed forwarded and comprise step by the message of the service message information of bearing bed network:
Whether search has in the described mapping table and the described list item that is complementary by the target MAC (Media Access Control) address in the bearing bed Network message that receives,
If have, with the MAC Address of the described bearing bed network node in the described list item that is complementary as the target MAC (Media Access Control) address of described bearing bed message to described bearing bed network send include described by the message of bearing bed Network message information,
If no, with broadcast address as the target MAC (Media Access Control) address of described bearing bed message to described bearing bed network send include described by the message of bearing bed Network message information.
Alternatively, the described transmission to described bearing bed network includes described step by the message of bearing bed Network message information and comprises step: with in the described message payload that is encapsulated into described bearing bed network by bearing bed Network message as described bearing bed message, then to described bearing bed network send include described by the described bearing bed message of bearing bed Network message information.
Preferably, when the fringe node of described bearing bed network is searched described mapping table during as bearing bed network destination node, in the described mapping table during not with the described list item that is complementary by the source MAC in the bearing bed Network message that receives, the step of adding the described list item that is concerned by the corresponding forwarding with the MAC Address of the source node of described bearing bed network of the source MAC of bearing bed Network message in described mapping table comprises step: with described by the source MAC of bearing bed Network message, described by in the newly-increased together list item corresponding in the described mapping table of the source MAC of bearing bed Network message characteristic field and described bearing bed network message.
Alternatively, described with described by the source MAC of bearing bed Network message, describedly comprised step by the step in the newly-increased together list item corresponding in the described mapping table of the source MAC of bearing bed Network message characteristic field and described bearing bed network message: if in the described mapping table existing with by the source MAC of bearing bed Network message and described by all identical list item of bearing bed Network message characteristic field, then delete original list item, in described mapping table, add described then by the corresponding list item of transmitting relation of the source MAC of bearing bed Network message with the MAC Address of the source node of described bearing bed network.
Alternatively, describedly describedly comprise described message and set up one and describedly comprised step with the corresponding step of transmitting the mapping table that concerns of the MAC Address of bearing bed network node: for each list item in the described mapping table is set up a timing by the source MAC of bearing bed Network message by bearing bed Network message information according to what receive, timing is then deleted described list item after arriving.
Utilize the present invention, can be when a media access control layer carries another media access control layer business, do not need artificial intervention, intelligence, dynamically determine the destination node of Network message in bearer network of being carried, the correct transmission of network service information when realizing network interconnection, the shared ability of raising Internet resources.
Description of drawings
Fig. 1 is the flow chart of steps of the retransmission method of information when a media access control layer carries another media access control layer in the prior art;
Fig. 2 is that the bearing bed network node receives by the flow chart of the step of transmitting to bearing bed network destination node behind the bearing bed service message in the retransmission method of media access control layer of the present invention information when carrying another media access control layer;
Fig. 3 is that bearing bed network destination node receives behind flow chart from the bearing bed message to the step that is sent by the destination node of the service message of bearing bed network from the source node of bearing bed network in the retransmission method of media access control layer of the present invention information when carrying another media access control layer;
Fig. 4 is the business model schematic diagram that uses Ethernet bearing WLAN for example that the present invention uses;
Fig. 5 is the business model schematic diagram that uses RPR carrying Ethernet for example that the present invention uses.
Embodiment
The present invention is described in further detail below in conjunction with drawings and embodiments:
At first briefly introduce used MAC Address among the present invention.In OSI (open system interconnection) 7 layer network agreements (physical layer, data link layer, network layer, transport layer, session layer, presentation layer, application layer) reference model, the second layer is a data link layer.It comprises two sublayers, and last layer is logic link control (LLC), and following one deck promptly is MAC layer, i.e. media access control layer/media access control layer.So-called medium (Media) is meant the multiple physical environment that transmission signals passes through.Network medium commonly used comprises cable (as: twisted-pair feeder, coaxial cable, optical fiber), also has microwave, laser, infrared ray etc., claims also that sometimes medium is a physical medium.MAC Address also is physical address, hardware address or link address, writes on hardware inside when being produced by network device manufacturers.This address and network are irrelevant, and where the hardware (as network interface card, hub, router etc.) that also promptly no matter will have this address is linked into network, and it all has identical MAC Address, and MAC Address is generally immutable, can not be set by user oneself.
MAC Address works in local area network (LAN), length is 48 (6 bytes), be typically expressed as 12 16 system numbers, separate with colon between per 2 16 system numbers, as: 08:00:20:0A:8C:6D is exactly a MAC Address, wherein preceding 6 16 systems are counted the numbering that 08:00:20 represents network hardware manufacturer, and it is distributed by IEEE (IEEE), and then 3 16 systems are counted the series number that 0A:8C:6D represents certain networking products (as network interface card) of this manufacturer's manufacturing.Each network manufacturer must guarantee that each ethernet device of its manufacturing all has first three identical byte and different back three bytes.So just can guarantee that each ethernet device all has unique MAC Address in the world.
Fig. 1 has described the steps flow chart of the retransmission method of information when a media access control layer carries another media access control layer in the prior art, wherein bearing bed forwarded information table is to be deposited in the equipment well by manual configuration in advance, and the operation layer message of reception can only be finished Jia Bao and forwarding according to the list item of manual configuration.
With reference to Fig. 2, Fig. 2 has described that the bearing bed network node receives by the flow process of the step of transmitting to bearing bed network destination node behind the bearing bed service message in the retransmission method of information when media access control layer of the present invention carries another media access control layer:
At first in step 21, receive by the service message of bearing bed network by the fringe node of bearing bed network, as source node, its MAC Address is the source MAC of bearing bed message to the fringe node of this bearing bed network when bearing bed Network Transmission bearing bed message;
Enter step 22 then, according in transmitting mapping table, being searched of receiving by the target MAC (Media Access Control) address in the operation layer message of bearing bed network, wherein said forwarding mapping table is to be set up automatically according to the message information that receives by the fringe node of bearing bed network, and its each list item has reflected by the corresponding relation of the MAC Address of the MAC Address of bearing bed Network message and bearing bed network node;
Enter step 23 then, judge whether and the described list item that is complementary by the target MAC (Media Access Control) address in the bearing bed Network message that receives according to checking result,
If have in the forwarding mapping table and the described list item that is complementary by the target MAC (Media Access Control) address in the bearing bed Network message that receives, enter step 24, the node M AC address of the bearing bed network in the list item that will be complementary is as the destination address of bearing bed message,
Arrive step 26 then, with the MAC Address of this fringe node in the bearing bed network source address as the bearing bed message,
And then to step 27, the operation layer message that this edge joint in the bearing bed network is received is filled in the bearing bed message as payload,
Such as, by the bearing bed message be
| DA | SA | Payload | FCS |
The MAC Address of this fringe node of bearing bed is SA ', transmit in the mapping table with the list item that is complementary by the destination address DA of bearing bed message in the MAC Address of corresponding bearing bed node be DA ', the message of bearing bed is so
| DA′ | SA′ | DA | SA | Payload | FCS |
The bearing bed message has not only comprised the source node and the destination node information of bearing bed like this, also comprised simultaneously receive by the complete information of the service message of bearing bed,
Enter step 28, send above-mentioned comprising to the destination node of bearing bed network by the bearing bed message of the information of the service message of bearing bed, finished like this by the bearing bed message in the bearing bed network by the source node of bearing bed network repeating process to the destination node of bearing bed network;
If do not have in the forwarding mapping table and the described list item that is complementary by the target MAC (Media Access Control) address in the bearing bed Network message that receives, enter step 25, with the destination address of broadcast address as the bearing bed message, also in described forwarding mapping table, add described simultaneously by the corresponding list item of transmitting relation of the target MAC (Media Access Control) address of bearing bed network message with bearing bed Web broadcast address
Arrive step 26 then, with the MAC Address of this fringe node in the bearing bed network source address as the bearing bed message,
And then to step 27, the operation layer message that this edge joint in the bearing bed network is received is filled in the bearing bed message as payload,
Such as, by the bearing bed message be
| DA | SA | Payload | FCS |
The MAC Address of this fringe node of bearing bed is SA ', and the message of bearing bed is so
| Broadcast address | SA′ | DA | SA | Payload | FCS |
The bearing bed message has not only comprised the source node and the destination node information of bearing bed like this, also comprised simultaneously receive by the complete information of the service message of bearing bed,
Enter step 28, send above-mentioned comprising to the destination node of bearing bed network by the bearing bed message of the information of the service message of bearing bed, so also finished by the bearing bed message in the bearing bed network by the source node of bearing bed network repeating process to the destination node of bearing bed network.
Refer again to Fig. 3, Fig. 3 has described bearing bed network destination node in the retransmission method of information when media access control layer of the present invention carries another media access control layer and has received behind flow process from the bearing bed message to the step that is sent by the destination node of the service message of bearing bed network from the source node of bearing bed network:
At first in step 31, receive comprising that the source node of bearing bed network transmits by the bearing bed message of the information of the service message of bearing bed by the destination node of bearing bed network;
Enter step 32 then, from the bearing bed message that receives, parse by the service message of bearing bed;
Whether enter step 33, searching in the described forwarding mapping table of this node correspondence has and the list item that is complementary by the source address in the service message of bearing bed,
If have, then this is not transmitted mapping table and operate, directly enter step 35, to the service message that is parsed by the bearing bed transmission,
If do not have, then enter step 34, the source MAC of operation layer message, the source address of bearing bed message are added in the described forwarding mapping table, also other field of operation layer message can be added in the described forwarding mapping table in the lump, realize transmitting the automatic foundation of mapping table
Enter step 35 then, to sent the service message that parses by bearing bed.
Receive by the service message of bearing bed network through the bearing bed network edge node of describing among top Fig. 2, transmit the bearing bed message of the operation layer message information that comprises reception then to the destination node of bearing bed network, receive the above-mentioned bearing bed message of transmitting by the source node of bearing bed network through the destination node of describing among Fig. 3 again by the bearing bed network, from the bearing bed message, parse operation layer then, to being sent the operation layer message that parses, so just finished the repeating process of business information when a media access control layer carries another media access control layer again by bearing bed.In this repeating process, it is good by human configuration in advance that reflection is not needed by the forwarding mapping table of the corresponding relation of forward node in the destination address of bearer network layer service message and the bearing bed network, but dynamically set up in to the process of being transmitted by bearer network service message information and safeguard at bearer network.
If when in described forwarding mapping table, adding new list item, not only being added in the list item of mapping table by the source MAC of the source address of bearing bed message and bearing bed message, transmit in the mapping table in the corresponding list item simultaneously, then can play the better maintaining effect transmitting mapping table also being added to by the further feature of bearing bed message.Concrete maintenance process is as follows:
In step 35 shown in Figure 3, when in transmitting mapping table, searching the list item that whether has and be complementary by the source address in the service message of bearing bed, whether the source address of not only judging the service message in the list item is complementary with the source MAC of the service message that parses from the bearing bed message, whether the further feature that also will judge message in the list item is complementary with the further feature of the message that parses from the bearing bed message, if these several all identical, then before entering the new list item of step 36 interpolation, delete this list item that is complementary earlier, and then enter step 36, add new list item.Certainly when adding new list item, also need the source MAC of the service message that parses from the bearing bed message and the further feature of message are added in the new list item in the lump.Like this when the MAC Address change of the bearing bed of the MAC Address correspondence of operation layer, such as the equipment that breaks down in the network is changed, variation has also taken place in corresponding M AC address, at this moment operation layer MAC Address of receiving and bearing bed MAC Address just with former forwarding mapping table in the MAC Address safeguarded inconsistent, adopt above-mentioned processing can upgrade the forwarding mapping item, keep up-to-date corresponding relation, avoid operation layer information is mail to wrong direction.
Equally, can also be by realizing transmitting the maintenance better of mapping table for the method for transmitting a timer of each list item setting in the mapping table.Wherein the time of timer can dispose arbitrarily, timer then after, just delete the pairing list item of timer, so just can avoid because network failure or other special circumstances cause list item incorrect, for a long time operation layer information is mail to wrong direction.Because the list item in the forwarding mapping table is transmitted in the operation layer information process at bearing bed and is set up automatically, so the action of the corresponding list item of above-mentioned timer back deletion does not then influence the correct forwarding of operation layer information.
Further describe the present invention with two concrete application examples of the present invention below.
At first with reference to Fig. 4, Fig. 4 is the business model schematic diagram that uses Ethernet bearing WLAN for example that the present invention uses:
Suppose that four different WLAN nets (WLAN1, WLAN2, WLAN3, WLAN4) are connected into a network by Ethernet.
The MAC Address of setting ethernet node A is MACA, and the MAC Address of ethernet node C is MACC.
Ethernet node A receives the message of WLAN1 net: destination address MAC3, source address MAC1;
Search the forwarding mapping table, if not with the list item of destination address MAC3 coupling, then ethernet node A transmits the Ethernet message of the information of the message that comprises the WLAN1 net of receiving: destination address broadcasting, source address MACA;
After ethernet node C receives the Ethernet message of above-mentioned node A transmission, set up automatically and transmit map entries: MAC1-MACA, the message that parses the WLAN1 net then sends.
Equally, ethernet node C receives the message of WLAN3: destination address MAC1, source address MAC3;
Search the forwarding mapping table, the list item MAC1-with destination address MAC1 coupling is arranged MACA, then ethernet node C transmits the Ethernet message of the information of the message that comprises the WLAN3 net of receiving: destination address MACA, source address MACC;
After ethernet node A receives the Ethernet message of above-mentioned node C transmission, set up automatically and transmit map entries: MAC3-MACC, the message that parses the WLAN3 net then sends.
After this, two-way all is clean culture.
Equally, the communication between WLAN1 and the WLAN2 can be set up automatically by the node A and the Node B of Ethernet, and the communication between WLAN1 and the WLAN4 can be set up automatically by the node A and the node D of Ethernet.Can be between the node of bearer network according to message switching or forwarding information, final foundation transmitted map entries, do not need artificial intervention, and any one WLAN user can both follow other any one WLAN user communication.And in the scheme of manual configuration, if be configured by port, possible A port can only carry out the exchange of message with the C port, can not carry out the exchange of message with B, D port, will make like this WLAN1 zone the wireless user can only with the wireless subscriber communication in WLAN3 zone, and can not with the wireless subscriber communication in WLAN2 and WLAN4 zone.
Refer again to Fig. 5, Fig. 5 is the another application of the invention example, uses the business model schematic diagram of RPR carrying Ethernet:
Wherein, 51,52,53,54 represent four different user nodes in the Ethernet respectively, and 55,56,57,58 represent four different nodes in the RPR net respectively: node A, Node B, node C and node C.
RPR is a kind of emerging link layer protocol, is a kind of brand-new IP bag bearing technology that proposes at ring topology transmitting data bag for optimizing, and is networking and the link-layer technologies that is fit to metropolitan area network backbone layer, convergence-level.
The MAC Address of setting RPR node A is MACA, and the MAC Address of RPR Node B is MACB.
RPR node A receives the message of Ethernet: destination address MAC2, source address MAC1;
Search the forwarding mapping table, if not with the list item of destination address MAC2 coupling, then RPR node A transmits the RPR message of the information of the message that comprises the Ethernet of receiving: destination address broadcasting, source address MACA;
After the RPR Node B is received the RPR message of above-mentioned node A transmission, set up automatically and transmit map entries: MAC1-MACA, the message that parses Ethernet then sends.
Equally, the RPR Node B is received the message of Ethernet: destination address MAC1, source address MAC2;
Search the forwarding mapping table, the list item MAC1-with destination address MAC1 coupling is arranged MACA, then the RPR Node B is transmitted the RPR message of the information of the message that comprises the Ethernet of receiving: destination address MACA, source address MACB;
After RPR node A receives the Ethernet message of above-mentioned Node B transmission, set up automatically and transmit map entries: MAC2-MACB, the message that parses Ethernet then sends.
After this, two-way all is clean culture.
Equally, the user of Ethernet can can't see the existence of RPR fully arbitrarily with ethernet user's communication of other node.The PRP ring safeguards that dynamically forwarding information, each node do not need configuration, dynamically generate and safeguard the RPR node of ethernet user's MAC Address correspondence, thereby finish the scheduling of message forwarding and looped network.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wish that appended claim comprises these distortion and variation and do not break away from spirit of the present invention.
Claims (10)
1. the retransmission method of information when a media access control layer carries another media access control layer, wherein, a media access control layer is the bearing bed network, another media access control layer is by the bearing bed network, two described media access control layer types can be identical, also can be different, it is characterized in that described method comprises step:
The fringe node of described bearing bed network, promptly insert described by the node of bearing bed Network, receive comprise described by the message of bearing bed Network message information;
Describedly comprise described message and set up one and comprise described according to what receive by the corresponding mapping table that concerns of transmitting of the source MAC of bearing bed Network message with the MAC Address of the bearing bed network source node that sends this message by bearing bed Network message information;
Include described to described bearing bed forwarded according to described mapping table by the message of the service message information of bearing bed network.
2. the retransmission method of information as claimed in claim 1, it is characterized in that, the fringe node of described bearing bed network, promptly insert by the node of bearing bed Network, receive and to comprise described step by the message of bearing bed Network message information and comprise step: the fringe node of described bearing bed network receives during as the bearing bed network source node described by the service message of bearing bed network; The fringe node of described bearing bed network receives during as bearing bed network destination node by the source node of described bearing bed network described by the bearing bed message of the source node information of the service message information of bearing bed network and described bearing bed network comprising of transmitting.
3. the retransmission method of information as claimed in claim 1, it is characterized in that, describedly describedly comprise described message by bearing bed Network message information and set up one and describedly comprised step by the source MAC of bearing bed Network message with the corresponding step of transmitting the mapping table of relation of the MAC Address of bearing bed network source node according to what receive: foundation comprises described by the source MAC of bearing bed message, described by the described mapping table of bearing bed message characteristic field and described bearing bed network source node MAC Address list item.
4. the retransmission method of information as claimed in claim 1, it is characterized in that, describedly describedly comprise described message and set up one and describedly comprised step with the corresponding step of transmitting the mapping table of relation of the MAC Address of bearing bed network source node by the source MAC of bearing bed Network message by bearing bed Network message information according to what receive: the fringe node of described bearing bed network, set up and safeguard described mapping table automatically according to the message information of reception.
5. the retransmission method of information as claimed in claim 4 is characterized in that, the fringe node of described bearing bed network is set up automatically and safeguarded that the step of described mapping table comprises step according to the message information that receives:
The fringe node of described bearing bed network is described by the bearing bed message of the source node information of the service message information of bearing bed network and described bearing bed network comprising of transmitting according to the source node by described bearing bed network that receives during as bearing bed network destination node, whether search has in the described mapping table and the described list item that is complementary by the source MAC in the bearing bed Network message that receives
If have, then keep former list item,
If no, in described mapping table, add the described list item that is concerned by the corresponding forwarding of the source MAC of bearing bed Network message with the MAC Address of the source node of described bearing bed network.
6. the retransmission method of information as claimed in claim 1 is characterized in that, describedly includes described step by the message of the service message information of bearing bed network according to described mapping table to described bearing bed forwarded and comprises step:
Whether search has in the described mapping table and the described list item that is complementary by the target MAC (Media Access Control) address in the bearing bed Network message that receives,
If have, with the MAC Address of the described bearing bed network node in the described list item that is complementary as the target MAC (Media Access Control) address of described bearing bed message to described bearing bed network send include described by the message of bearing bed Network message information,
If no, with broadcast address as the target MAC (Media Access Control) address of described bearing bed message to described bearing bed network send include described by the message of bearing bed Network message information.
7. the retransmission method of information as claimed in claim 6, it is characterized in that, the described transmission to described bearing bed network includes described step by the message of bearing bed Network message information and comprises step: with in the described message payload that is encapsulated into described bearing bed network by bearing bed Network message as described bearing bed message, then to described bearing bed network send include described by the described bearing bed message of bearing bed Network message information.
8. the retransmission method of information as claimed in claim 5, it is characterized in that, when the fringe node of described bearing bed network is searched described mapping table during as bearing bed network destination node, in the described mapping table during not with the described list item that is complementary by the source MAC in the bearing bed Network message that receives, the step of adding the described list item that is concerned by the corresponding forwarding with the MAC Address of the source node of described bearing bed network of the source MAC of bearing bed Network message in described mapping table comprises step: with described by the source MAC of bearing bed Network message, described by in the newly-increased together list item corresponding in the described mapping table of the source MAC of bearing bed network message feature field and described bearing bed network message.
9. the retransmission method of information as claimed in claim 8, it is characterized in that, described with described by the source MAC of bearing bed Network message, describedly comprised step by the step in the newly-increased together list item corresponding in the described mapping table of the source MAC of bearing bed Network message characteristic field and described bearing bed network message: if in the described mapping table existing with by the source MAC of bearing bed Network message and described by all identical list item of bearing bed Network message characteristic field, then delete original list item, in described mapping table, add described then by the corresponding list item of transmitting relation of the source MAC of bearing bed Network message with the MAC Address of the source node of described bearing bed network.
10. the retransmission method of information as claimed in claim 1, it is characterized in that, describedly describedly comprise described message and set up one and describedly comprised step with the corresponding step of transmitting the mapping table that concerns of the MAC Address of bearing bed network source node: for each list item in the described mapping table is set up a timing by the source MAC of bearing bed Network message by bearing bed Network message information according to what receive, timing is then deleted described list item after arriving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03128417 CN1283075C (en) | 2003-04-23 | 2003-04-23 | Method for forwarding information when a media access control layer loadbearing another media access control layer |
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| CN 03128417 CN1283075C (en) | 2003-04-23 | 2003-04-23 | Method for forwarding information when a media access control layer loadbearing another media access control layer |
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| CN1540939A CN1540939A (en) | 2004-10-27 |
| CN1283075C true CN1283075C (en) | 2006-11-01 |
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| CN1863133A (en) * | 2005-07-18 | 2006-11-15 | 华为技术有限公司 | Method and apparatus for transmitting message |
| CN100461761C (en) * | 2005-10-28 | 2009-02-11 | 华为技术有限公司 | Method for inhibiting source port |
| CN101141290B (en) * | 2007-03-05 | 2010-05-26 | 中兴通讯股份有限公司 | Automatic regionalization method in communication network planning |
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