CN102647330A - Data transmission method and device - Google Patents
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- CN102647330A CN102647330A CN2011100399380A CN201110039938A CN102647330A CN 102647330 A CN102647330 A CN 102647330A CN 2011100399380 A CN2011100399380 A CN 2011100399380A CN 201110039938 A CN201110039938 A CN 201110039938A CN 102647330 A CN102647330 A CN 102647330A
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Abstract
The invention provides a data transmission method and device. The method comprises the following steps that a first boundary routing bridge of a first data center network receives a data message encapsulated in a TRILL (Transparent Interconnection of Lots of Links) message format from a first routing bridge of the first data center network; the first boundary routing bridge determined by the data message needs to span an intermediate network to be transmitted to a second data center network; and the first boundary routing bridge replaces the outer-layer Ethernet header of the data message with a message header corresponding to the intermediate network and then transmits the data message. According to the data transmission method and the device, all MAC (Media Access Control) address information of an opposite terminal data center does not need to be stored on boundary routing bridge equipment, so that the problem that the MAC address volume referred in the correlative technique is too large is solved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of data transmission method and device.
Background technology
Multipath transparent transmission (Transparent Interconnection of Lots of Links abbreviates TRILL as) is a kind ofly to have merged the advantage of two, three layers of prior art and evaded the technology of a kind of two layers of route of its shortcoming.
At present, the problem that two layers of bridge (bridge) exist in the network mainly comprises: generate tree and can block some ports, link can not be fully used; Generating the selected path of tree may not be the optimal path of flow, and transmitting is not to transmit (for example, SPF algorithm) according to shortest path as Routing Protocol; Ethernet header does not have hop count, when the Spanning-Tree Protocol on switch produces temporary loop, can cause Ether frame exponentially in network to be replicated, and possibly cause snowslide; Flow is transmitted along generating tree, causes flow to concentrate on and generates on the selected link of tree, can't on the suboptimum link, share flow; The variation that network topology is little can cause to generate to set and recomputate, and the network upheaval is bigger or the like.
And at present, the problem that three layers of router exists in the network mainly comprises: the configuration of router needs complicacy, can not be as bridge device plug and play; The necessary configuration of IP address of each link, the node that is connected on this link must dispose the IP prefix identical with this link, can't realize transparent to node.
The basic principle of TRILL agreement is: utilization Intermediate System-to-Intermediate System (Intermediate System-to-Intermediate System; Abbreviating ISIS as) ripe link-state routing protocol becomes network structure with the double layer network topological structure from tree; Solved the problem that the link in two layers of bridge is not fully utilized, the load balancing of link is provided through the mode of the equative route in the route; The shortest path thought of TRILL agreement use route and the mode of jumping figure solve the problem of loop; Avoid Spanning-Tree Protocol (Spanning Tree Protocol simultaneously; Abbreviate STP as) the later significantly network concussion of fault under the network condition; Use the thought solution multicast of distribution tree, the problem of broadcast delivery, use for reference the beta pruning of Routing Protocol, the back guaranteed and simplified processing from multicast message to modes such as path detection simultaneously.
TRILL only is used for local area network (LAN) or individual data central site network mostly at present; But in some applications; When being applied to a plurality of data center, possibly need to cross over IP network or multi protocol label exchange (Multi-Protocol Label Switching abbreviates MPLS as) network between the data center such as TRILL; Cross over the problem of three-layer network transmission for two layers of TRILL data; Present solution is to adopt the mode of a kind of medium access control (MAC) Over IP, need carry out the encapsulation of MAC over IP to Layer 2 data on the border of two three-layer networks, but adopts this method; On the routing bridge equipment of border, need to preserve all mac address informations of opposite end data center, cause the excessive problem of MAC Address capacity.
Need carry out the encapsulation of MAC over IP to Layer 2 data to the border at two three-layer networks in the correlation technique; But on the routing bridge equipment of border, need to preserve all mac address informations of opposite end data center; Cause the excessive problem of MAC Address capacity, do not propose effective solution at present as yet.
Summary of the invention
The present invention aims to provide a kind of data transmission method and device; Need carry out the encapsulation of MAC over IP to solve in the correlation technique to Layer 2 data on the border of two three-layer networks; But on the routing bridge equipment of border, need to preserve all mac address informations of opposite end data center, cause the excessive problem of MAC Address capacity.
According to an aspect of the present invention, a kind of data transmission method is provided, has comprised: the data message with the encapsulation of TRILL message format from first routing bridge of said first data center network is received in the first border route bridging of first data center network; The said first border routing bridge confirms that said data message needs between span centre Network Transmission to second data center network; The said first border routing bridge transmits said data message after the outer Ethernet head of said data message is replaced with the heading corresponding with said go-between.
According to a further aspect in the invention; A kind of data transmission device is provided; Be positioned at the first border routing bridge of first data center network, comprise: first receiver module is used to receive the data message with the encapsulation of TRILL message format from first routing bridge of said first data center network; Determination module is used for confirming that said data message needs between span centre Network Transmission to second data center network; Package module is used for the outer Ethernet head of said data message is replaced with the heading corresponding with said go-between; Transport module is used to transmit the said data message after said package module encapsulation.
In embodiments of the present invention; When two layers the message data with the encapsulation of multipath transparent transmission message format is crossed over three-layer network (being go-between) transmission; Transmitting terminal transmits after the outer Ethernet head of message data is replaced with the heading corresponding with three-layer network; Thereby make all mac address informations that on the routing bridge equipment of border, need not preserve opposite end data center, therefore solved the excessive problem of mentioning in the correlation technique of MAC Address capacity.
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 process chart according to the data transmission method of the embodiment of the invention;
Fig. 2 is the network environment sketch map according to the data transmission method of the embodiment of the invention;
Fig. 3 is the sketch map according to the message format of the embodiment of the invention;
Fig. 4 is a data encapsulation flow chart of realizing striding IP network according to the use TRILL agreement of the embodiment of the invention;
Fig. 5 is the particular flow sheet according to the data transmission procedure of the embodiment of the invention;
Fig. 6 is the structural representation according to a kind of data transmission device of the embodiment of the invention;
Fig. 7 is the structural representation of data transmission device according to the preferred embodiment of the invention;
Fig. 8 is the structural representation of the data transmission device of another preferred embodiment according to the present invention;
Fig. 9 is the structural representation according to the another kind of data transmission device of the embodiment of the invention;
Figure 10 is the structural representation of data transmission device according to the preferred embodiment of the invention;
Figure 11 is the structural representation of the data transmission device of another preferred embodiment according to the present invention.
Embodiment
Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
Mention in the correlation technique; Need carry out the encapsulation of MAC over IP to Layer 2 data to the border at two three-layer networks in the correlation technique; But on the routing bridge equipment of border, need to preserve all mac address informations of opposite end data center; Cause the excessive problem of MAC Address capacity, do not propose effective solution at present as yet.
For solving the problems of the technologies described above, the embodiment of the invention provides a kind of data transmission method, and its handling process is as shown in Figure 1, comprising:
Step S102, the data message with the encapsulation of multipath transparent transmission (TRILL) message format from first routing bridge of first data center network is received in the first border route bridging of first data center network;
Wherein, for the data message among the step S102, first routing bridge can be called the inlet routing bridge, and in the TRILL of this data message heading, inlet another name (nickname) is the another name of first routing bridge;
Step S104, the first border routing bridge confirm that said data message needs between span centre Network Transmission to second data center network;
For example; In network architecture sketch map shown in Figure 2; The host A of data center 1 need send data to the host B of data center 2, and host A sends to inlet routing bridge (being the RBridge 1 among Fig. 2) with data message, after the inlet routing bridge encapsulates this data message with the TRILL message format; Be transferred to the border routing bridge (being the RBridge 2 among Fig. 2) of data center 1, RBridge 2 need to confirm between span centre network with this data message transmission data center 2.
For example, can in the routing bridge of border, be configured in advance, configuration needs the MAC Address of network between span centre, to filter out the TRILL message data that need not stride IP network.The first border routing bridge is behind the data message that receives from first routing bridge; From the internal layer Ethernet heading of this data message, obtain the target MAC (Media Access Control) address of this data message; Search in the MAC Address that needs Network Transmission between span centre of configuration and whether have this target MAC (Media Access Control) address; If confirm that then this data message needs Network Transmission between span centre.Perhaps; Also can in the first border routing bridge, dispose the mac address range of notebook data central site network; The first border routing bridge is getting access to the target MAC (Media Access Control) address of this data message; Judge whether this MAC Address belongs in the mac address range of notebook data central site network, if not, confirm that then this data network needs Network Transmission between span centre.
Step S106, the first border routing bridge transmit this data message after the outer Ethernet head of this data message is replaced with the heading corresponding with go-between.
For example; Go-between can be IP network, and then the first border routing bridge will replace with the IP heading with the outer Ethernet head of the data message of TRILL message format encapsulation, promptly carry out TRILL over IP encapsulation; The structure of the data message after the encapsulation is as shown in Figure 3; Skin is the IP heading, is the TRILL heading then, and internal layer is the Ethernet heading.Outer IP heading is used to realize striding the routing addressing transmission of IP network, and the TRILL heading is used for the outlet routing bridge of this data message and the transfer of data between the inlet routing bridge.Internal layer Ethernet head is user's migration data header.After the encapsulation of TRILL over IP message, at the skin of IP message, data can also encapsulate ethernet header in the outside of IP heading according to the encapsulation format of TCP/IP again in the intemet transmission through network;
Fig. 4 realizes striding the data encapsulation schematic flow sheet of IP network for using the TRILL agreement in the embodiment of the invention, and as shown in Figure 3, host A needs the data of transmission with the encapsulation of Ethernet message format; As shown in Figure 4, host A is encapsulation Ethernet head on data (Payload) basis of sending, and in this Ethernet head, comprises the target MAC (Media Access Control) address and the source MAC of this data message; At this original Ethernet data; After arriving ingress RBridge (inlet routing bridge, i.e. RBridge among Fig. 4 1), RBridge1 carries out common TRILL message encapsulation to this data message; For this data message increases TRILL heading and outer Ethernet head; Wherein, the inlet nickname in the TRILL heading is the nickname of RBridge 1, transmits this data message then.This data message arrives border router bridge (Border RBridge; Be the Border RBridge 1 among Fig. 4) after; 2 pairs of these data messages of Border RBridge carry out the encapsulation of TRILL Over IP; The outer Ethernet head that is about to this data message replaces with the IP heading, and the source IP address that writes down at this IP heading is the IP address of Border RBridge 1, transmits this data message then.This data message is after IP network arrives the border routing bridge (being the Border RBridge 2 among Fig. 4) of opposite end; Border RBridge 2 separates TRILL over IP encapsulation; And then after adopting the encapsulation of TRILL message format again; Wherein, be the nickname of RBridge 1 with Border RBridge 2 with the inlet nickname (being the inlet nickname in the TRILL heading) of the data message of TRILL message format encapsulation, transmit this data message then.In data center 2, data message returns to the Ethernet message format after arriving egress RBridge (outlet routing bridge, i.e. RBridge among Fig. 4 2), is transferred to host B.
Perhaps, go-between also can be the MPLS network, and then the first border routing bridge will replace with the MPLS heading with the outer Ethernet head of the data message of TRILL message format encapsulation, promptly carry out TRILL over MPLS encapsulation.
In order to improve efficiency of transmission; In embodiments of the present invention; A plurality of routing bridge equipment can carry out the self study of address, therefore, and in Fig. 4; Border RBridge 2 is behind the data message that receives TRILL over IP encapsulation; Can from the IP heading, obtain the IP address of Border RBridge 2, and obtain the nickname of RBridge1 the TRILL heading after separating TRILL over IP encapsulation, preserve the corresponding relation of nickname of IP address and the RBridge 1 of Border RBridge 2 then.
And the RBridge 2 of data center 2 is behind the data message with the encapsulation of TRILL message format that receives Border RBridge 2 transmission; From the TRILL heading of this data message, obtain the nickname of RBridge 1; And obtain the source MAC that writes down in the internal layer Ethernet heading of this data message, and preserve the nickname of RBridge 1 and the corresponding relation of this source MAC.
Know in order to make data center 1 whether above-mentioned data message successfully receives; The host B of data center 2 is after receiving data message; Can send the receiveing the response of source MAC that target MAC (Media Access Control) address are above-mentioned data message to RBridge 2; Wherein, Similar process with above-mentioned data message transmission; Host B sends this response message with ethernet format, after RBridge 2 receives this response message, searches the corresponding relation of nickname of MAC Address and the routing bridge of preservation; Obtain the corresponding nickname of target MAC (Media Access Control) address that writes down in the Ethernet heading with response message; With this response message of TRILL message format encapsulation, the inlet nickname of the response message after the encapsulation (being the inlet nickname in the TRILL heading) be the nickname of RBridge2 then, and outlet nickname is the nickname (the corresponding nickname of target MAC (Media Access Control) address that writes down in promptly preservation and Ethernet heading response message) of RBridge 1; Response message with the TRILL encapsulation is transferred to Border RBridge 2 then; According to the routing bridge nickname that preserves and the corresponding relation of IP address, obtain the corresponding IP address (being the IP address of Border RBridge 1) of outlet nickname (being the nickname of RBridge 1) in the TRILL heading with response message, be transferred to Border RBridge 1 through IP network after will encapsulating this response message with TRILL over IP form then; Border RBridge 1 receives this response message; Separate TRILL over IP encapsulation; And preserve the corresponding relation of the IP address (being the source IP address in the IP heading of response message) of nickname (i.e. inlet nickname in the TRILL heading of this response message) Yu the Border RBridge2 of the Border RBridge 2 in this response message, and this response message is sent to RBridge 1 after with the TRILL encapsulation; RBridge 1 receives this response message, obtains the source MAC (being the source MAC that writes down in the internal layer Ethernet head, the just MAC Address of host B) of this response message; RBridge 1 preserves the nickname (being recorded among the inlet nickname of TRILL heading of response message) of Border RBridge2 and the corresponding relation of the source MAC of response message, is transferred to host A with ethernet format then.
Because RBridge 1 has learnt the corresponding relation of nickname and MAC Address; Therefore, when RBridge 1 received the data message of host A transmission, RBridge 1 can judge how to send this data message according to the corresponding relation of preserving; Particularly; After RBridge 1 receives the data message of host A transmission, from the Ethernet head (being internal layer Ethernet head) of this data message, obtain the target MAC (Media Access Control) address of this data message, whether preserve MAC Address then in the corresponding relation of local MAC Address of preserving of judgement and routing bridge nicknam with this target MAC (Media Access Control) address coupling; If; Then this data message is being carried out TRILL message format when encapsulation, with the nickname of the routing bridge corresponding preserved with this MAC Address as outlet nickname, with the nickname of RBridge 1 as the nickname that enters the mouth; This data message is encapsulated as the TRILL message format, and the data message after will encapsulating with the mode of unicast message then is sent to Border RBridge 1; If the local MAC Address of not preserving with the target MAC (Media Access Control) address coupling of this data message; Then the nickname with RBridge 1 is inlet nickname; Nickname with multicast is outlet nickname; This data message is encapsulated as the TRILL message format, this data message after the encapsulation is transmitted along multicast distribution tree.
And Border RBridge 1 is when the above-mentioned data message of transmission TRILL over IP encapsulation; Judge the RBridge nickname that whether has the outlet nickname (being recorded in the outlet nickname field of the TRILL heading of this data message) with this data message to mate in the corresponding relation of the local RBridge nickname that preserves and IP address; If; Then obtain the IP address corresponding, and this data message is transferred to the Border RBridge2 corresponding with this IP address with this RBridge nickname; If the RBridge nickname that matees less than outlet RBridge in the corresponding relation of local RBridge nickname of preservation and IP address with this data message; Then Border RBridge 1 is transferred to this data message respectively and above-mentioned one or more corresponding one or more opposite ends peer-to-peer in IP address according to the IP address of one or more opposite ends peer-to-peer of this locality configuration.
In embodiments of the present invention, inlet routing bridge (for example, RBridge among Fig. 41 and RBridge 2) can be through the MAC Address of self-study mechanism study self to its website (for example, host A among Fig. 4 and host B); Perhaps, main frame also can adopt ESADI mechanism, initiatively its MAC Address of announcement inlet routing bridge.
In embodiments of the present invention; When two layers multipath transparent transmission (TRILL) data are crossed over the three-layer network transmission; The border routing bridge can be according to the type of current three-layer network, and the data message that the TRILL message format is encapsulated carries out encapsulated delivery, makes Layer 2 data can cross over the three-layer network transmission; On the routing bridge of border, need not preserve all mac address informations of opposite end data center, therefore solve the excessive problem of mentioning in the correlation technique of MAC Address capacity.
With specific embodiment the data transmission method that the embodiment of the invention provides is described at present; Be illustrated in figure 4 as the structure of using the TRILL agreement to realize across a network with network environment and be example; Data center is by bridge (Bridge) and support the routing bridge two-layer equipments such as (RBridge) of TRILL agreement to form, and the Internet network of being made up of router Router in the middle of the data that the main frame Host A of data center (Data center) 1 sends need be crossed over arrives the main frame Host B of Data center 2.In Fig. 4, for the IP route network is an example, host A is as shown in Figure 5 to the process of host B transmission data first, mainly may further comprise the steps with the go-between:
Step 502, host A sends the Ethernet message to the ingress at notebook data center RBridge (being RBridge 1);
Step S504,1 pair of Ethernet message of ingress RBridge carries out the encapsulation of TRILL message format, owing to be first packet, Ingress RBridge encapsulates with unknown message;
Step S506, ingress RBridge 1 handles with unknown message, sends this TRILL encapsulated message to multicast distribution tree;
Step S508; After the Border of data center 1 RBridge (being 1 among Fig. 4) receives above-mentioned TRILL encapsulated message; Carry out the mode encapsulated message of TRILL over IP, replace outer Ethernet head with the IP heading, source IP address wherein is the IP address of Border RBridge 1;
Particularly, can in Border RBridge, be configured in advance, configuration need be striden the MAC Address of IP network; To filter out the TRILL message data that need not stride IP network; Border RBridge 1 obtains the target MAC (Media Access Control) address of this data message from internal layer Ethernet head after receiving the TRILL encapsulated message, and judge whether this MAC Address strides in the MAC Address of IP network at the needs of configuration; If then confirm to stride this data message of IP network transmission.
In addition, can also between Border RBridge, dispose peer-to-peer in advance, i.e. the IP address of its peer-to-peer of configuration in each Border RBridge; Therefore, in this step, when Border RBridge 1 carries out TRILL over IP encapsulation; Purpose IP address is the IP address of opposite end peer-to-peer; Source IP address is the IP address of this Border RBridge, in the time of a plurality of peer-to-peer, need carry out repeatedly encapsulation and the transmission of TRILL over IP;
Step S510, message transmits through the mode of route at IP network, is transferred to the Border RBridge (being the BorderRBridge 2 among Fig. 4) of opposite end;
Step S512; After the Border RBridge of opposite end receives message; Decapsulation TRILL over IP message carries out TRILL message encapsulation then, and wherein the ingress nickname in the TRILL heading still is the nickname of the ingress RBridge of data center 1 (being RBridge 1);
Step S514 transmits along multicast distribution tree in data center 2;
Step S516, after egress RBridge (being the RBridge 2 among Fig. 4) receives the TRILL message, decapsulation TRILL message;
Step S518, ethernet format are transferred to destination host Host B.
The said method that provides through the embodiment of the invention; The border routing bridge is through carrying out TRILL overIP encapsulation to the TRILL encapsulated message; Data message is transferred to another data center through IP network, thereby has avoided and to have stored all mac address informations of opposite end and to cause taking excessive problem easily by routing bridge on the border.
And; In the present embodiment, above-mentioned each routing bridge can carry out the self study of address, for example; Ingress RBridge (comprising RBridge 1 and RBridge 2) need learn source MAC (being the MAC of host A and host B), writes down the mac address information that it connects website; The Border RBridge of data center 2 need carry out the study of nickname and IP address; The IP address information of the Border RBridge of record ingress nickname (being the nickname of the RBridge 1 among Fig. 4) and data center 1, and preserve this recorded corresponding relation; And the Border RBridge of data center 1 need carry out the study of nickname and IP address, the IP address information of the Border RBridge of record ingress nickname (being the nickname of the RBridge 2 among Fig. 4) and data center 2; Egress RBridge need write down MAC Address and ingress nickname address, and preserves this corresponding relation.
In the above-described embodiments; Host B is after receiving data message; Can return response message to host A, thereby make the Border RBridge of data center 1 can record the IP address information of the Border RBridge of ingress nickname (being the nickname of the RBridge 2 among Fig. 4) and data center 2; RBridge 1 records the MAC Address and the RBridge2 nickname address of host B.
Therefore, for non-first packet, i.e. the forwarding of unicast data, above flow process is slightly different, among the step S504, need carry out the encapsulation of TRILL according to MAC Address of preserving and the corresponding relation of nickname; Among the step S506, send the TRILL message with the mode of unicast message, and need not transmit, adopt the mode of similar default route to send to BorderRBridge along distribution tree; Among the step S508, according to the IP address that nickname searches the opposite end peer-to-peer, destination address is this IP address, need repeatedly not encapsulate and transmit; The TRILL message of step S514 also transmits with the mode of clean culture, and does not need to transmit along distribution tree.
The embodiment of the invention also provides a kind of data transmission device; The first border routing bridge that this device is positioned at first data center network (for example; Border RBridge 1 among Fig. 4) its structure is as shown in Figure 6; Comprise: first receiver module 61 is used to receive the data message with the encapsulation of TRILL message format from first routing bridge of first data center network; Determination module 62 is used for confirming that this data message needs between span centre Network Transmission to second data center network; Package module 63 is used for the outer Ethernet head of this data message is replaced with the heading corresponding with said go-between; Transport module 64 is used to transmit the data message after package module 63 encapsulation.
Wherein, above-mentioned go-between can be IP network, and the heading corresponding with this go-between is the IP heading.
In a preferred implementation of the embodiment of the invention; As shown in Figure 7; This device can also comprise: second receiver module 65; Be used to receive the response message that said second data center network is returned, wherein, carry the IP address of the second border routing bridge of another name and said second data center network of the secondary route bridge of said second data center network in this response message; Memory module 66 is used to preserve the corresponding relation of IP address of another name and the said second border routing bridge of said secondary route bridge.
In another preferred implementation of the embodiment of the invention; As shown in Figure 8; This device can also comprise: judge module 67; Be used for judging whether said corresponding relation that memory module 66 is preserved has the routing bridge another name with the outlet alias match of said data message, if trigger then that said transport module 64 is transferred to said data message and the corresponding pairing said second border routing bridge in this IP address of this routing bridge another name; Otherwise, trigger said transport module 64 said data message be transferred to respectively and the local corresponding one or more opposite ends peer-to-peer in one or more IP addresses that disposes.
Wherein, determination module 62 can comprise: acquiring unit is used to obtain the target MAC (Media Access Control) address of said data message; Judging unit; Be used for judging the target MAC (Media Access Control) address that whether comprises said data message at the pre-configured MAC Address that needs Network Transmission between span centre; If; Confirm that then said data message needs Network Transmission between span centre,, confirm that then said data message does not need Network Transmission between span centre if not.
In embodiments of the present invention, above-mentioned go-between also can be the MPLS network, and the heading corresponding with said go-between is the MPLS heading.
The embodiment of the invention also provides another kind of data transmission device; The second border routing bridge that this device is positioned at second data center network (for example; Border RBridge 2 among Fig. 4), can be used in combination with the device among above-mentioned Fig. 6-8, its structure is as shown in Figure 9; Mainly comprise: first receiver module 90; Be used to receive the data message that the first border routing bridge of first data center network sends through go-between, wherein, said data message will be for replacing with the data message of the heading corresponding with said go-between with the outer Ethernet head of the data message of TRILL message format encapsulation; Decapsulation module 92; Be used for the said data message that the said receiver module of decapsulation receives; And with the said data message after the TRILL message format encapsulation decapsulation; Wherein, with the inlet another name of the said data message of TRILL message format encapsulation another name for first routing bridge of said first data center network; Transport module 93 is used to transmit the said data message of said decapsulation module 92 with the encapsulation of TRILL message format.
In a preferred implementation of the embodiment of the invention, above-mentioned go-between is an IP network, and the heading corresponding with this go-between is the IP heading; Shown in figure 10, this device can also comprise: memory module 94 is used for preserving the corresponding relation of the IP address of the said first border routing bridge that the IP heading of another name and the said data message of said first routing bridge carries.
In another preferred implementation of the embodiment of the invention; Shown in figure 11; This device also comprises: second receiver module 95 is used to receive the response message with the encapsulation of TRILL message format from the secondary route bridge of said second data center network, wherein; The inlet another name of the said response message of encapsulation is the another name of said secondary route bridge, and the outlet another name is the another name of said first routing bridge; Search module 96, be used for searching the IP address corresponding with the another name of said first routing bridge according to the corresponding relation of the routing bridge another name of preserving with the IP address; Second transport module 97 is used for said response message is transferred to said through said go-between and searches the corresponding said first border routing bridge in said IP address that module searches arrives.
In another preferred implementation of the embodiment of the invention, above-mentioned go-between is the MPLS network, and the heading corresponding with this go-between is the MPLS heading.
From above description; Can find out; In embodiments of the present invention; When two layers multipath transparent transmission TRILL data were crossed over the three-layer network transmission, the border routing bridge of transmitting terminal adopted the encapsulation format corresponding with three-layer network to carry out data encapsulation on the basis of TRILL protocol encapsulation, made Layer 2 data can cross over the three-layer network transmission; On the routing bridge equipment of border, need not preserve the mac address information of opposite end data center, therefore solve the excessive problem of mentioning in the correlation technique of MAC Address capacity.And in embodiments of the present invention, routing bridge can carry out address learning, thereby can improve transmitting speed.
Obviously; It is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize that they can concentrate on the single calculation element with the general calculation device; 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, carried out by calculation element thereby can they be stored in the storage device; 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 merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (22)
1. a data transmission method is characterized in that, comprising:
The data message with the encapsulation of multipath transparent transmission TRILL message format from first routing bridge of said first data center network is received in the first border route bridging of first data center network;
The said first border routing bridge confirms that said data message needs between span centre Network Transmission to second data center network;
The said first border routing bridge transmits said data message after the outer Ethernet head of said data message is replaced with the heading corresponding with said go-between.
2. method according to claim 1 is characterized in that, said go-between is an IP network, and the heading corresponding with said go-between is the IP heading.
3. method according to claim 2 is characterized in that, after the said first border routing bridge transmitted said TRILL encapsulated message, said method also comprised:
Said data message is received in the second border route bridging of said second data center network;
The said data message of the said second border routing bridge deblocking; Again with the said data message after the TRILL message format encapsulation decapsulation; Wherein, with the inlet another name of the said data message of TRILL message format encapsulation another name for first routing bridge of said first data center network;
The said second border routing bridge transmission is with the said data message of TRILL message format encapsulation.
4. method according to claim 3; It is characterized in that; After said data message was received in the said second border route bridging, said method also comprised: the said second border routing bridge is preserved the corresponding relation of the IP address of the said first border routing bridge that carries in the IP heading of another name and said data message of said first routing bridge.
5. method according to claim 4 is characterized in that, after the said data message of the said second border routing bridge transmission with the encapsulation of TRILL message format, said method also comprises:
The secondary route bridge joint of said second data center network is received the said data message with the encapsulation of TRILL message format;
The decapsulation of said secondary route bridge is with the said data message of TRILL message format encapsulation; Preserve the corresponding relation of source MAC of another name and the said data message of said first routing bridge; Wherein, said source MAC is recorded in the internal layer Ethernet heading of said data message;
The said data message of said secondary route bridge after with decapsulation is transferred to destination host with ethernet format.
6. method according to claim 5 is characterized in that, at said outlet routing bridge said data message is transferred to destination host, and said method also comprises:
It is the response message of the source MAC of said data message that said destination host sends target MAC (Media Access Control) address to said secondary route bridge;
Said secondary route bridge is according to the corresponding relation of the another name of MAC Address of preserving and routing bridge; Encapsulate said response message with the TRILL message format; Wherein, the inlet of the said response message of encapsulation another name is the another name of said secondary route bridge, and the outlet another name is the another name of said first routing bridge;
The said second border routing bridge receives said response message, according to the corresponding relation of the routing bridge another name of preserving with the IP address, said response message is transferred to the said first border routing bridge through said go-between;
The said first border routing bridge receives said response message, preserves the corresponding relation of IP address of another name and the said second border routing bridge of the said secondary route bridge in the said response message, and said response message is sent to said first routing bridge;
Said response message is received in said first route bridging, obtains the source MAC of said response message;
Said first routing bridge is preserved the corresponding relation of source MAC of another name and the said response message of said secondary route bridge.
7. method according to claim 6 is characterized in that, before the data message with the encapsulation of TRILL message format was received in the said first border route bridging, said method also comprised:
The said data message that source host sends is received in said first route bridging;
Said first routing bridge judges whether preserve the MAC Address that the target MAC (Media Access Control) address with said data message matees in the said corresponding relation of the local MAC Address of preserving and routing bridge another name; If; Then call as outlet with the another name of the routing bridge corresponding preserved with this MAC Address; Another name with said first routing bridge is called as inlet; Said data message is encapsulated as the TRILL message format, and the said data message after will encapsulating with the mode of unicast message is sent to the said first border routing bridge;
If the local MAC Address of not preserving with the target MAC (Media Access Control) address coupling of said data message; Then call as inlet with the another name of said first routing bridge; Said data message is encapsulated as the TRILL message format, the said data message after the encapsulation is transmitted along distribution tree.
8. method according to claim 6 is characterized in that, the said first border routing bridge transmits said data message and comprises:
The said first border routing bridge is judged the routing bridge another name that whether has in the corresponding relation of the local routing bridge another name of preserving and IP address with the outlet alias match of said data message; If; Then obtain and this corresponding IP address of routing bridge another name, and said data message is transferred to the said second border routing bridge corresponding with this IP address;
If in the local corresponding relation of preserving routing bridge another name and IP address not with the routing bridge another name of the outlet routing bridge coupling of said data message; The then said first border routing bridge is transferred to said data message respectively and said one or more corresponding one or more opposite ends peer-to-peer in IP address according to the IP address of one or more opposite ends peer-to-peer of this locality configuration.
9. according to each described method in the claim 5 to 8; It is characterized in that; The data of sending for said second data center network; Said secondary route bridge is for the inlet routing bridge, and for the data from said first data center network that receive, said secondary route bridge is the outlet routing bridge.
10. according to each described method in the claim 1 to 8; It is characterized in that; The data of sending for said first data center network; Said first routing bridge is for the inlet routing bridge, and for the data from said second data center network that receive, said first routing bridge is the outlet routing bridge.
11. method according to claim 1 is characterized in that, said go-between is a multi protocol label exchange MPLS network, and the heading corresponding with said go-between is the MPLS heading.
12., it is characterized in that the said first border routing bridge confirms that said data message needs that Network Transmission comprises to second data center network between span centre according to each described method in the claim 1 to 8 and 11:
The said first border routing bridge obtains the target MAC (Media Access Control) address of said data message;
The said first border routing bridge is searched the pre-configured MAC Address that needs Network Transmission between span centre; Whether the target MAC (Media Access Control) address of judging said data message is the MAC Address that needs Network Transmission between span centre; If; Confirm that then said data message needs Network Transmission between span centre,, confirm that then said data message does not need Network Transmission between span centre if not.
13. a data transmission device is positioned at the first border routing bridge of first data center network, it is characterized in that, comprising:
First receiver module is used to receive the data message with the encapsulation of TRILL message format from first routing bridge of said first data center network;
Determination module is used for confirming that said data message needs between span centre Network Transmission to second data center network;
Package module is used for the outer Ethernet head of said data message is replaced with the heading corresponding with said go-between;
Transport module is used to transmit the said data message after said package module encapsulation.
14. device according to claim 13 is characterized in that, said go-between is an IP network, and the heading corresponding with said go-between is the IP heading.
15. device according to claim 14 is characterized in that, said device also comprises:
Second receiver module; Be used to receive the response message that said second data center network is returned; Wherein, carry the IP address of the second border routing bridge of another name and said second data center network of the secondary route bridge of said second data center network in the said response message;
Memory module is used to preserve the corresponding relation of IP address of another name and the said second border routing bridge of said secondary route bridge.
16. device according to claim 15 is characterized in that, said device also comprises:
Judge module; Be used for judging whether said corresponding relation that said memory module is preserved has the routing bridge another name with the outlet alias match of said data message; If then trigger said transport module said data message be transferred to and the corresponding pairing said second border routing bridge in this IP address of this routing bridge another name; Otherwise, trigger said transport module said data message be transferred to respectively and the local corresponding one or more opposite ends peer-to-peer in one or more IP addresses that disposes.
17., it is characterized in that said determination module comprises according to each described device in the claim 13 to 16:
Acquiring unit is used to obtain the target MAC (Media Access Control) address of said data message;
Judging unit; Be used for judging the target MAC (Media Access Control) address that whether comprises said data message at the pre-configured MAC Address that needs Network Transmission between span centre; If; Confirm that then said data message needs Network Transmission between span centre,, confirm that then said data message does not need Network Transmission between span centre if not.
18. device according to claim 13 is characterized in that, said go-between is a multi protocol label exchange MPLS network, and the heading corresponding with said go-between is the MPLS heading.
19. a data transmission device is positioned at the second border routing bridge of second data center network, it is characterized in that, comprising:
First receiver module is used to receive that the first border routing bridge of first data center network sends through go-between
Data message, wherein, said data message will be for replacing with the data message of the heading corresponding with said go-between with the outer Ethernet head of the data message of TRILL message format encapsulation;
Decapsulation module; Be used for the said data message that the said receiver module of decapsulation receives; And with the said data message after the TRILL message format encapsulation decapsulation; Wherein, with the inlet another name of the said data message of TRILL message format encapsulation another name for first routing bridge of said first data center network;
Transport module is used to transmit the said data message of said decapsulation module with the encapsulation of TRILL message format.
20. device according to claim 19 is characterized in that, said go-between is an IP network, and the heading corresponding with said go-between is the IP heading; Said device also comprises:
Memory module is used for preserving the corresponding relation of the IP address of the said first border routing bridge that the IP heading of another name and the said data message of said first routing bridge carries.
21. device according to claim 20 is characterized in that, said device also comprises:
Second receiver module; Be used to receive response message with the encapsulation of TRILL message format from the secondary route bridge of said second data center network; Wherein, the inlet of the said response message of encapsulation another name is the another name of said secondary route bridge, and the outlet another name is the another name of said first routing bridge;
Search module, be used for searching the IP address corresponding with the another name of said first routing bridge according to the corresponding relation of the routing bridge another name of preserving with the IP address;
Second transport module is used for said response message is transferred to said through said go-between and searches the corresponding said first border routing bridge in said IP address that module searches arrives.
22. device according to claim 19 is characterized in that, said go-between is a multi protocol label exchange MPLS network, and the heading corresponding with said go-between is the MPLS heading.
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| CN201110039938.0A CN102647330B (en) | 2011-02-17 | Data transmission method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110039938.0A CN102647330B (en) | 2011-02-17 | Data transmission method and device |
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| Publication Number | Publication Date |
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| CN102647330A true CN102647330A (en) | 2012-08-22 |
| CN102647330B CN102647330B (en) | 2016-12-14 |
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