CN105306335A - Message forwarding method and device - Google Patents
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- CN105306335A CN105306335A CN201510770689.0A CN201510770689A CN105306335A CN 105306335 A CN105306335 A CN 105306335A CN 201510770689 A CN201510770689 A CN 201510770689A CN 105306335 A CN105306335 A CN 105306335A
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Abstract
The invention discloses a message forwarding method and device, wherein the message forwarding method comprises the following steps: obtaining destination address information of a message; inquiring an equipment information list of pre-collected equipment information according to the destination address information, and judging whether corresponding destination equipment is old equipment; if the destination equipment is not the old equipment, performing VXLAN packaging of the message, and forwarding the message subjected to VXLAN packaging; and, if the destination equipment is the old equipment, packaging a pre-set virtual local area network tag VLAN TAG to the message, and forwarding the packaged message. According to the message forwarding method and device provided in the embodiment of the invention, the old equipment not supporting VXLAN is accessed to a VXLAN network in a manner of setting a software integration bridge; hardware equipment is unnecessary to add; therefore, the cost is saved; the connection set of the old equipment is unnecessary to change; in the event of forwarding the message, a corresponding message packaging manner can be selected according to the address information of the destination equipment and then forwarding is carried out; and thus, seamless integration is realized.
Description
Technical field
The present invention relates to communication technique field, particularly relate to a kind of retransmission method and device of message.
Background technology
VXLAN (VirtualExtensibleLAN, virtual easily extensible local area network (LAN)) be the network technology of a kind of overlay (covering), the method of MACinUDP (physical address is at User Datagram Protocol) is used to encapsulate, the encapsulated message head of totally 50 bytes.VXLAN provides the ability of double layer network overlay on three-layer network, has better autgmentability than VLAN (VLAN).And in real network deployment, there is a large amount of hardware devices not supporting VXLAN, these equipment also need to be linked in VXLAN network.
At present, as intermediate layer, the conversion between VXLAN and VLAN is carried out mainly through increasing independent L2GW (Layer2Gateway, a two-layer gateway) equipment.The mapping relations of manual configuration VXLAN and VLAN on L2GW equipment, thus will not support that the hardware device assets of VXLAN are linked in VXLAN network.
But L2GW equipment adds purchase cost, and need to manage independently, and the mapping relations of manual configuration VXLAN and VLAN, the connection simultaneously also will changing the hardware device not supporting VXLAN is arranged, and cannot accomplish Seamless integration-.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, one object of the present invention is the retransmission method proposing a kind of message, without the need to increasing hardware device, save cost, connection without the need to changing used equipment is arranged, when E-Packeting, selecting corresponding message packaged type according to the address information of object equipment and forwarding, thus realizing Seamless integration-.
Second object of the present invention is the retransmission unit proposing a kind of message.
To achieve these goals, first aspect present invention embodiment proposes a kind of retransmission method of message, is applied in the mixed networking comprising virtual easily extensible LAN VXLAN and VLAN, comprises the following steps: the destination address information obtaining message; Inquire about the facility information list of collecting device information in advance according to described destination address information, judge whether corresponding object equipment is used equipment; If the non-used equipment of described object equipment, then carry out VXLAN encapsulation to described message, and the described message after VXLAN encapsulation is forwarded; And if described object equipment is used equipment, is then the virtual local area network tags VLANTAG that the encapsulation of described message is preset, and the described message after encapsulation is forwarded.
The retransmission method of the message of the embodiment of the present invention, by arranging the mode of software integration bridge, to not support that the used equipment of VXLAN is linked in VXLAN network, without the need to increasing hardware device, saving cost, arranging, when E-Packeting without the need to the connection changing used equipment, select corresponding message packaged type according to the address information of object equipment and forward, thus realizing Seamless integration-.
Second aspect present invention embodiment proposes a kind of retransmission unit of message, comprising: acquisition module, for obtaining the destination address information of message; Judge module, for inquiring about the facility information list of collecting device information in advance according to described destination address information, judges whether corresponding object equipment is used equipment; Package module, for when the non-used equipment of described object equipment, VXLAN encapsulation is carried out to described message, and the described message after VXLAN encapsulation is forwarded, when described object equipment is used equipment, for the virtual local area network tags VLANTAG that described message encapsulation is preset, and the described message after encapsulation is forwarded.
The retransmission unit of the message of the embodiment of the present invention, by arranging the mode of software integration bridge, to not support that the used equipment of VXLAN is linked in VXLAN network, without the need to increasing hardware device, saving cost, arranging, when E-Packeting without the need to the connection changing used equipment, select corresponding message packaged type according to the address information of object equipment and forward, thus realizing Seamless integration-.
Accompanying drawing explanation
Fig. 1 is that in prior art, VXLAN network message forwards principle schematic.
Fig. 2 is the flow chart of the retransmission method of message according to an embodiment of the invention.
Fig. 3 is that virtual machine and used equipment carry out the effect schematic diagram that communicates according to an embodiment of the invention.
Fig. 4 is the effect schematic diagram of communication between virtual machines.
Fig. 5 is the structural representation of the retransmission unit of message according to an embodiment of the invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In the prior art, for the network supporting VXLAN, as shown in Figure 1, its principle E-Packeted is as follows: the message that virtual machine VM1 or VM2 sends carries out VXLAN encapsulation at software forward bridge, after encapsulation, its outgoing interface is VXLAN virtual interface, and its IP layer encapsulation source IP address is the IP address of three local layer interface L3Int1 interfaces, the IP address of the three layer interface L3Int2 interfaces held for the purpose of object IP address.After encapsulation, the protocol stack eventually through L3Int1 interface realizes the transmission of message.
And the object of the invention is to the support equipment of VXLAN and the equipment of supported vlans to merge, being about to not support that the used equipment of VXLAN is added in VXLAN network, without the need to increasing external hardware device, the forwarding of message in hybrid network can being realized.
Fig. 2 is the flow chart of the retransmission method of message according to an embodiment of the invention.
As shown in Figure 2, the retransmission method of message can comprise:
S101, obtains the destination address information of message.
S102, inquires about the facility information list of collecting device information in advance according to destination address information, judge whether corresponding object equipment is used equipment.
Wherein, used equipment refers to the equipment not supporting VXLAN.
Particularly, the address information of used equipment can be gathered in advance, and logical port information is set for used equipment, then preserve address information and logical port information in facility information list.When there being message repeating, the address information of all devices in the destination address information in message and facility information list can be mated, after finding the address information of the equipment in network consistent with destination address information, whether the content can preserved according to facility information list obtains the logical port information of corresponding equipment, then be used equipment according to logical port information determination object equipment.
For example, physical address MAC and the logical address IP of known used equipment in network can be obtained in advance, by RESTAPI (RepresentationalStateTransferApplicationProgrammingInter face, declarative state transitions application programming interface) or static configuration mode be that establishment logic port unified by used equipment, can arrange logic port type is particular type, such as LEGENCY.Then, above-mentioned information be saved in facility information list, wherein, the logic port type of used equipment is unified is denoted as LEGENCY.When there being message repeating, can inquiry apparatus information list, according to the destination address information in message, the logic port type of corresponding object equipment can be determined.If the logic port type of object equipment is LEGENCY, then can determine that object equipment is used equipment; If the logic port type of object equipment is not LEGENCY, then can determine the non-used equipment of object equipment.
S103, if the non-used equipment of object equipment, then carries out VXLAN encapsulation to message, and forwards the message after VXLAN encapsulation.
Particularly, when the non-used equipment of object equipment, namely during object equipment support VXLAN, VXLAN tunnel flow table can be set up, and encapsulate virtual local area network tags VLANTAG in physical link layer.Wherein, VLANTAG can comprise default East and West direction VLAN ID VLANID.Then three layer interfaces to merging bridge are forwarded the packet by the virtual interface of software forward bridge, and through physical network card, and forwarded the packet to object equipment by physical switches.
S104, if object equipment is used equipment, is then the virtual local area network tags VLANTAG that message encapsulation is preset, and forwards the message after encapsulation.
Particularly, when object equipment is used equipment, namely when object equipment does not support VXLAN, can the VLANTAG of matching message be local VLANTAG, and the VLANTAG of encapsulated message is north-south VLANID, then directly forward the packet to fusion bridge, then through physical network card by software forward bridge, and forwarded the packet to object equipment by physical switches, thus realize the transmission of message.
Being described in detail with an instantiation below, when carrying out mixed networking to VXLAN and VLAN, can arranging in advance.First, the each independently tenant (being positioned at the set of the virtual machine of the same network segment) that can be in network distributes a north-south VLANID, virtual machine communicates with used equipment by this north-south VLANID, and communication flows is at link layer packaging north-south VLANTAG.
Secondly, for all virtual machines distribute a systemic presupposition VLANID unitedly, i.e. East and West direction VLANID, support to communicate by East and West direction VLANID between the equipment (non-used equipment) of VXLAN, communication flows is at link layer packaging East and West direction VLANTAG, and the TAG namely merging three layer interface L3Int1 and L3Int2 of bridge and the virtual interface of software forward bridge is East and West direction VLANTAG.
Then, can gather physical address MAC and the logical address IP of used equipment, be that establishment logic port unified by used equipment by RESTAPI or static configuration mode, can arrange logic port type is LEGENCY.When needing when there being message to forward, whether the logic port type can analyzing object equipment corresponding to destination address information in message is LEGENCY type.
If be LEGENCY type, then illustrate that the object equipment that message sends does not support VXLAN, be used equipment, then the virtual machine sending message can use north-south VLANID that message is sent to used equipment.As shown in Figure 3, suppose that virtual machine VM1 sends message to used equipment, this message is the flow produced that communicates between virtual machine and used equipment, then determine to use north-south flow between the two, the VLANTAG of message can be revised as north-south VLANTAG, then directly send to fusion bridge, then through physical network card from software forward bridge, and forwarded the packet to used equipment by physical switches, thus realize the transmission of message.
If logic port type is not LEGENCY, then the non-used equipment of illustration purpose equipment, for supporting the equipment of VXLAN, as shown in Figure 4, suppose that virtual machine VM1 sends message to virtual machine VM3, can by message at physical link layer encapsulation East and West direction VLANTAG.Then the three layer interface L3int1 to merging bridge are forwarded the packet by the VXLAN virtual interface of software forward bridge, and through physical network card, and forward the packet to object equipment by physical switches, again by the physical network card of object equipment, the three layer interface L3int2 merging bridge, software forward bridge VXLAN virtual interface and software access bridge, be finally sent to virtual machine VM3.
Should be understood that, no matter be the communication supported the communication between VXLAN equipment or support between VXLAN equipment and used equipment, message is all forwarded by Same Physical network interface card, without the need to purchasing L2GW equipment or many increases by one piece of physical network card, provides cost savings.
The retransmission method of the message of the embodiment of the present invention, by judging whether corresponding object equipment supports virtual easily extensible local area network (LAN) VXLAN according to the destination address information of the message got, and when object equipment supports VXLAN, VXLAN encapsulation is carried out to message and forwards, when object equipment does not support VXLAN, VLAN encapsulation is carried out to message and forwards, by arranging the mode of software integration bridge, the message of VXLAN encapsulation and the message of VLAN encapsulation all forward by same physical network card, effectively can will not support that the used equipment of VXLAN is linked in network, without the need to increasing hardware device, save cost, connection without the need to changing used equipment is arranged, realize Seamless integration-.
For achieving the above object, the present invention also proposes a kind of retransmission unit of message.
Fig. 5 is the structural representation of the retransmission unit of message according to an embodiment of the invention.
As shown in Figure 5, the retransmission unit of this message can comprise: acquisition module 110, judge module 120, package module 130 and preservation module 140.
Wherein, acquisition module 110 can obtain the destination address information of message.
Judge module 120 can inquire about the facility information list of collecting device information in advance according to destination address information, judge whether corresponding object equipment is used equipment.
Wherein, used equipment refers to the equipment not supporting VXLAN.
Particularly, preserve module 140 and can gather the address information of used equipment in advance, and arrange logical port information for used equipment, then preservation address information and logical port information are in facility information list.When there being message repeating, the address information of all devices in the destination address information in message and facility information list can be mated by judge module 120, after finding the address information of the equipment in network consistent with destination address information, whether the content can preserved according to facility information list obtains the logical port information of corresponding equipment, then be used equipment according to logical port information determination object equipment.
For example, physical address MAC and the logical address IP of known used equipment in network can be obtained in advance, by RESTAPI (RepresentationalStateTransferApplicationProgrammingInter face, declarative state transitions application programming interface) or static configuration mode be that establishment logic port unified by used equipment, can arrange logic port type is particular type, such as LEGENCY.Then, above-mentioned information be saved in facility information list, wherein, the logic port type of used equipment is unified is denoted as LEGENCY.When there being message repeating, can inquiry apparatus information list, according to the destination address information in message, the logic port type of corresponding object equipment can be determined.If the logic port type of object equipment is LEGENCY, then can determine that object equipment is used equipment; If the logic port type of object equipment is not LEGENCY, then can determine the non-used equipment of object equipment.
Package module 130 is for when the non-used equipment of object equipment, VXLAN encapsulation is carried out to message, and the message after VXLAN encapsulation is forwarded, when object equipment is used equipment, for the virtual local area network tags VLANTAG that message encapsulation is preset, and the message after encapsulation is forwarded.
Particularly, when the non-used equipment of object equipment, namely during object equipment support VXLAN, VXLAN tunnel flow table can be set up, and encapsulate virtual local area network tags VLANTAG in physical link layer.Wherein, VLANTAG can comprise default East and West direction VLAN ID VLANID.Then three layer interfaces to merging bridge are forwarded the packet by the virtual interface of software forward bridge, and through physical network card, and forwarded the packet to object equipment by physical switches.
Particularly, when object equipment is used equipment, namely when object equipment does not support VXLAN, can the VLANTAG of matching message be local VLANTAG, and the VLANTAG of encapsulated message is north-south VLANID, then directly forward the packet to fusion bridge, then through physical network card by software forward bridge, and forwarded the packet to object equipment by physical switches, thus realize the transmission of message.
Being described in detail with an instantiation below, when carrying out mixed networking to VXLAN and VLAN, can arranging in advance.First, the each independently tenant (being positioned at the set of the virtual machine of the same network segment) that can be in network distributes a north-south VLANID, virtual machine communicates with used equipment by this north-south VLANID, and communication flows is at link layer packaging north-south VLANTAG.
Secondly, for all virtual machines distribute a systemic presupposition VLANID unitedly, i.e. East and West direction VLANID, support to communicate by East and West direction VLANID between the equipment (non-used equipment) of VXLAN, communication flows is at link layer packaging East and West direction VLANTAG, and the TAG namely merging three layer interface L3Int1 and L3Int2 of bridge and the virtual interface of software forward bridge is East and West direction VLANTAG.
Then, can gather physical address MAC and the logical address IP of used equipment, be that establishment logic port unified by used equipment by RESTAPI or static configuration mode, can arrange logic port type is LEGENCY.When needing when there being message to forward, whether the logic port type can analyzing object equipment corresponding to destination address information in message is LEGENCY type.
If be LEGENCY type, then illustrate that the object equipment that message sends does not support VXLAN, be used equipment, then the virtual machine sending message can use north-south VLANID that message is sent to used equipment.As shown in Figure 3, suppose that virtual machine VM1 sends message to used equipment, this message is the flow produced that communicates between virtual machine and used equipment, then determine to use north-south flow between the two, the VLANTAG of message can be revised as north-south VLANTAG, then directly send to fusion bridge, then through physical network card from software forward bridge, and forwarded the packet to used equipment by physical switches, thus realize the transmission of message.
If logic port type is not LEGENCY, then the non-used equipment of illustration purpose equipment, for supporting the equipment of VXLAN, as shown in Figure 4, suppose that virtual machine VM1 sends message to virtual machine VM3, can by message at physical link layer encapsulation East and West direction VLANTAG.Then the three layer interface L3int1 to merging bridge are forwarded the packet by the VXLAN virtual interface of software forward bridge, and through physical network card, and forward the packet to object equipment by physical switches, again by the physical network card of object equipment, the three layer interface L3int2 merging bridge, software forward bridge VXLAN virtual interface and software access bridge, be finally sent to virtual machine VM3.
Should be understood that, no matter be the communication supported the communication between VXLAN equipment or support between VXLAN equipment and used equipment, message is all forwarded by Same Physical network interface card, without the need to purchasing L2GW equipment or many increases by one piece of physical network card, provides cost savings.
The retransmission unit of the message of the embodiment of the present invention, by judging whether corresponding object equipment supports virtual easily extensible local area network (LAN) VXLAN according to the destination address information of the message got, and when object equipment supports VXLAN, VXLAN encapsulation is carried out to message and forwards, when object equipment does not support VXLAN, VLAN encapsulation is carried out to message and forwards, by arranging the mode of software integration bridge, the message of VXLAN encapsulation and the message of VLAN encapsulation all forward by same physical network card, effectively can will not support that the used equipment of VXLAN is linked in network, without the need to increasing hardware device, save cost, connection without the need to changing used equipment is arranged, realize Seamless integration-.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (10)
1. a retransmission method for message, is applied in the mixed networking comprising virtual easily extensible LAN VXLAN and VLAN, it is characterized in that, comprise the following steps:
Obtain the destination address information of message;
Inquire about the facility information list of collecting device information in advance according to described destination address information, judge whether corresponding object equipment is used equipment, and described used equipment is the equipment not supporting VXLAN;
If the non-used equipment of described object equipment, then carry out VXLAN encapsulation to described message, and the described message after VXLAN encapsulation is forwarded; And
If described object equipment is used equipment, is then the virtual local area network tags VLANTAG that the encapsulation of described message is preset, and the described message after encapsulation is forwarded.
2. the method for claim 1, is characterized in that, the facility information list of collecting device information in advance comprises:
Gather the address information of described used equipment, and logical port information is set for described used equipment;
Preserve in described address information and described logical port information to described facility information list.
3. method as claimed in claim 2, is characterized in that, inquire about the facility information list of collecting device information in advance according to described destination address information, judges whether corresponding object equipment is used equipment, specifically comprises:
Inquire about described facility information list, described facility information list comprises the address information of all devices in network and logical port information corresponding to described address information;
Obtain the address information of the described equipment in network consistent with described destination address information and corresponding logical port information thereof, determine whether described object equipment is used equipment according to described logical port information.
4. method as claimed in claim 3, is characterized in that, describedly determines whether described object equipment is used equipment, comprising according to described logical port information:
If described logical port information is preset kind, then determine that described object equipment is used equipment;
If the non-preset kind of described logical port information, then determine the non-used equipment of described object equipment.
5. the method for claim 1, is characterized in that, is the virtual local area network tags VLANTAG that described message encapsulation is preset, comprises:
Mate the VLANTAG of described message for local VLANTAG, and the VLANTAG encapsulating described message is north-south VLANID; And
By software forward bridge directly by described message repeating to merging bridge, and through physical network card, and by physical switches by described message repeating to described object equipment.
6. a retransmission unit for message, is applied in the mixed networking comprising virtual easily extensible LAN VXLAN and VLAN, it is characterized in that, comprising:
Acquisition module, for obtaining the destination address information of message;
Judge module, for inquiring about the facility information list of collecting device information in advance according to described destination address information, judges whether corresponding object equipment is used equipment, and described used equipment refers to the equipment not supporting VXLAN;
Package module, for when the non-used equipment of described object equipment, VXLAN encapsulation is carried out to described message, and the described message after VXLAN encapsulation is forwarded, when described object equipment is used equipment, for the virtual local area network tags VLANTAG that described message encapsulation is preset, and the described message after encapsulation is forwarded.
7. device as claimed in claim 6, it is characterized in that, described device also comprises:
Preserving module, for gathering the address information of described used equipment, and logical port information being set for described used equipment, and preserve in described address information and described logical port information to described facility information list.
8. device as claimed in claim 7, is characterized in that, described judge module, for:
Inquire about described facility information list, described facility information list comprises the address information of all devices in network and logical port information corresponding to described address information;
Obtain the address information of the described equipment in network consistent with described destination address information and corresponding logical port information thereof, determine whether described object equipment is used equipment according to described logical port information.
9. device as claimed in claim 8, is characterized in that, described judge module, specifically for:
If described logical port information is preset kind, then determine that described object equipment is used equipment;
If the non-preset kind of described logical port information, then determine the non-used equipment of described object equipment.
10. device as claimed in claim 6, is characterized in that, described package module, specifically for:
Mate the VLANTAG of described message for local VLANTAG, and the VLANTAG encapsulating described message is north-south VLANID; And
By software forward bridge directly by described message repeating to merging bridge, and through physical network card, and by physical switches by described message repeating to described object equipment.
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Also Published As
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| CN105306335B (en) | 2019-10-22 |
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