CN108156066A - Message forwarding method and device - Google Patents
Message forwarding method and device Download PDFInfo
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- CN108156066A CN108156066A CN201711487167.5A CN201711487167A CN108156066A CN 108156066 A CN108156066 A CN 108156066A CN 201711487167 A CN201711487167 A CN 201711487167A CN 108156066 A CN108156066 A CN 108156066A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
Abstract
The application provides a kind of message forwarding method and device, including：When receiving VXLAN messages by the first non-loopback port, VXLAN messages are decapsulated, to obtain the original IP packet in VXLAN messages；Original IP packet is forwarded to the first loopback port, and carry out three layers of forward process to original IP packet based on the first loopback port；According to three layers of forward process as a result, original IP packet is forwarded to treated；When receiving IP packet by the second non-loopback port, three layers of forward process are carried out to IP packet；By treated, IP packet is forwarded to the second loopback port, and by treated, IP packet is encapsulated as VXLAN messages based on the second loopback port；According to three layers of forward process as a result, being forwarded to the VXLAN messages after encapsulation.Technical scheme can realize three layers of communication between VXLAN networks and IP network and different VXLAN networks.
Description
Technical field
This application involves field of communication technology more particularly to a kind of message forwarding methods and device.
Background technology
With the continuous development of the communication technology, VXLAN (Virtual Extensible Local Area Network, void
Intend expansible LAN) as a kind of overlay network technologies of new release, it has also been obtained and is widely applied.
In the relevant technologies, the communication between VXLAN networks and traditional IP network and different VXLAN networks needs
It is realized by the network equipment for supporting tri- layers of communications of VXLAN.But in practical applications, since most network equipments do not prop up
Tri- layers of communications of VXLAN are held, therefore usually will appear the communication between VXLAN networks and IP network and three layers across VXLAN networks
The problem of communication can not be realized.
Invention content
In view of this, the application provides a kind of message forwarding method and device.
Specifically, the application is achieved by the following technical solution：
In a first aspect, the application provides a kind of message forwarding method, the method is applied to the network equipment, including：
When receiving VXLAN messages by the first non-loopback port, the VXLAN messages are decapsulated, to obtain
Take the original IP packet in the VXLAN messages；
The original IP packet is forwarded to the first loopback port, and based on the first loopback port to the initial IP
Message carries out three layers of forward process；
According to three layers of forward process as a result, original IP packet is forwarded to treated；
When receiving IP packet by the second non-loopback port, three layers of forward process are carried out to the IP packet；
By treated, IP packet is forwarded to the second loopback port, and will be after the processing based on the second loopback port
IP packet be encapsulated as VXLAN messages；
According to three layers of forward process as a result, being forwarded to the VXLAN messages after encapsulation.
Second aspect, the application provide a kind of apparatus for forwarding message, and described device is applied to the network equipment, including：
Decapsulation unit, for when receiving VXLAN messages by the first non-loopback port, to the VXLAN messages
It is decapsulated, to obtain the original IP packet in the VXLAN messages；
First processing units, for the original IP packet to be forwarded to the first loopback port, and based on first ring
It goes back to port and three layers of forward process is carried out to the original IP packet；
First retransmission unit, for according to three layers of forward process as a result, original IP packet is forwarded to treated；
Second processing unit, for when receiving IP packet by the second non-loopback port, being carried out to the IP packet
Three layers of forward process；
Encapsulation unit, for IP packet to be forwarded to the second loopback port, and based on the second loopback end by treated
Mouthful treated that IP packet is encapsulated as VXLAN messages by described；
Second retransmission unit, for according to three layers of forward process as a result, being forwarded to the VXLAN messages after encapsulation.
Above-mentioned technical proposal is analyzed it is found that using technical scheme, can be realized between VXLAN networks and IP network
Three layers of communication, while can also realize three layers between different VXLAN networks communication, that is, realize three across VXLAN networks
Layer communication.
Description of the drawings
Fig. 1 is a kind of flow chart of message forwarding method shown in one exemplary embodiment of the application；
Fig. 2 is a kind of schematic diagram of message forwarding system；
Fig. 3 is the schematic diagram of another message forwarding system；
Fig. 4 is a kind of hardware structure diagram of apparatus for forwarding message place equipment shown in one exemplary embodiment of the application；
Fig. 5 is a kind of block diagram of apparatus for forwarding message shown in one exemplary embodiment of the application.
Specific embodiment
Here exemplary embodiment will be illustrated in detail, example is illustrated in the accompanying drawings.Following description is related to
During attached drawing, unless otherwise indicated, the same numbers in different attached drawings represent the same or similar element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the application.
It is only merely for the purpose of description specific embodiment in term used in this application, and is not intended to be limiting the application.
It is also intended in the application and " one kind " of singulative used in the attached claims, " described " and "the" including majority
Form, unless context clearly shows that other meanings.It is also understood that term "and/or" used herein refers to and wraps
Containing one or more associated list items purposes, any or all may be combined.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the application
A little information should not necessarily be limited by these terms.These terms are only used for same type of information being distinguished from each other out.For example, not departing from
In the case of the application range, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on linguistic context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determining ".
It please refers to Fig.1, is a kind of flow chart of message forwarding method shown in one exemplary embodiment of the application.The message
Retransmission method can be applied to the network equipments such as interchanger, include the following steps：
Step 101：When receiving VXLAN messages by the first non-loopback port, the VXLAN messages are unsealed
Dress, to obtain the original IP packet in the VXLAN messages.
Step 102：The original IP packet is forwarded to the first loopback port, and based on the first loopback port to institute
It states original IP packet and carries out three layers of forward process.
Step 103：According to three layers of forward process as a result, original IP packet is forwarded to treated.
In the present embodiment, the network equipment is by the first non-loopback port when receiving VXLAN messages, can should
VXLAN message up sending is handled the VXLAN messages by processing chip to processing chip.It specifically, can be to the VXLAN
Message is decapsulated, that is, deletes VXLAN headings of the VXLAN messages etc., to obtain the initial IP report in the VXLAN messages
Text.
After the original IP packet is got, which can be forwarded to the first loopback port, so as to
Three layers of forward process are carried out to the original IP packet based on the first loopback port.
Specifically, after the original IP packet is forwarded to the first loopback port, you can at the first loopback port
It detects the original IP packet, i.e., the original IP packet is received by the first loopback port.And passing through first loopback
It, then can be again by the initial IP message up sending to processing chip, by processing chip pair after port receives the original IP packet
The original IP packet carries out three layers of forward process, i.e., searches local routing table according to the purpose IP address of the original IP packet, and
Next-hop routing and forwarding port in the route table items that the purpose IP address of the original IP packet is hit, as the initial IP
The corresponding next-hop routing of message and forwarding port.And after next-hop routing is determined, then it can be by the original IP packet
Target MAC (Media Access Control) address is revised as the MAC Address of next-hop routing to get (it is original that treated to modified original IP packet
IP packet).
Subsequently, can continue according to three layers of forward process as a result, by the forwarding port in three layers of forward process result,
The modified original IP packet is forwarded, will the modified original IP packet be forwarded to IP network.
It please refers to Fig.2, is a kind of schematic diagram of message forwarding system.In message forwarding system shown in Fig. 2, network is set
Standby 1 is the VTEP (VXLAN Tunneling End Point, VXLAN tunneling termination), VM in a certain VXLAN networks
(Virtual Machine, virtual machine) can access the VXLAN networks by the VTEP.What the network equipment 1 can send VM
IP packet is encapsulated as VXLAN messages, and the VXLAN messages are forwarded to the network equipment 2.
The network equipment 2, can be first to this when receiving the VXLAN messages by port 1 (the first non-loopback port)
VXLAN messages are decapsulated, to obtain the original IP packet in the VXLAN messages, the i.e. IP packet that the VM is sent.It is obtaining
To after the original IP packet, which can be forwarded to port 2 (the first loopback port), and connect by port 2
After receiving the original IP packet, then can local routing table be searched according to the purpose IP address of the original IP packet, with acquisition pair
The next-hop routing answered and forwarding port.It, then can be by the original IP packet assuming that the forwarding port-for-port 3 found
After target MAC (Media Access Control) address is revised as the MAC Address of next-hop routing, modified original IP packet is forwarded by port 3, it will
The modified original IP packet is forwarded to IP network.
It should be noted that loopback port can be pre-configured with by user, i.e., for can in advance will be in the network equipment
A part of port is configured to loopback port, and other ports in the network equipment are non-loopback port.
Step 104：When receiving IP packet by the second non-loopback port, the IP packet is carried out at three layers of forwarding
Reason.
Step 105：By treated, IP packet is forwarded to the second loopback port, and is based on the second loopback port by institute
Stating treated, IP packet is encapsulated as VXLAN messages.
Step 106：According to three layers of forward process as a result, being forwarded to the VXLAN messages after encapsulation.
In the present embodiment, the network equipment can report the IP when receiving IP packet by the second non-loopback port
It is sent on text to processing chip, the IP packet is handled by processing chip.Specifically, three layers can be carried out to the IP packet to turn
Hair processing searches local routing table, and the purpose IP address of the IP packet is hit according to the purpose IP address of the IP packet
Route table items in next-hop routing and forwarding port, as the routing of the IP packet corresponding next-hop and forwarding port.And
After next-hop routing is determined, then the target MAC (Media Access Control) address of the IP packet can be revised as to the MAC of next-hop routing
Location is to get to modified IP packet (treated IP packet).
Subsequently, which can be forwarded to the second loopback port, so as to be based on second ring
Going back to port, treated that IP packet is encapsulated as VXLAN messages by described.
Specifically, after the modified IP packet is forwarded to the second loopback port, you can at the second loopback end
The modified IP packet is detected at mouthful, i.e., the modified IP packet is received by the second loopback port.And logical
It crosses after the second loopback port receives the modified IP packet, then will can be sent in the modified IP packet to place again
Chip is managed, the modified IP packet is encapsulated as VXLAN messages by processing chip.
It should be noted that it can be determined and the forwarding port pair according to the forwarding port in three layers of forward process result
The VNI (VXLAN Network Identifier, VXLAN network identity) answered, so as to according to the VNI that this is modified
IP packet is encapsulated as VXLAN messages, i.e., the VNI in the VXLAN headings of the VXLAN messages after encapsulation is the VNI.
Subsequently, can continue according to three layers of forward process as a result, by the forwarding port in three layers of forward process result
VXLAN messages after the encapsulation are forwarded, VXLAN messages that will be after the encapsulation are forwarded to VXLAN networks.
Continue by taking message forwarding system shown in Fig. 2 as an example, the network equipment 2 can pass through (the second non-loopback end of port 3
Mouthful) receive the IP packet that the network equipment in IP network is sent.The network equipment 2 when receiving the IP packet by port 3,
Can local routing table first be searched according to the purpose IP address of the IP packet, end is route and forward to obtain corresponding next-hop
Mouthful.After next-hop routing is determined, the target MAC (Media Access Control) address of the IP packet can be revised as to the MAC of next-hop routing
Location.
Subsequently, modified IP packet can be forwarded to port 4 (the second loopback port), and received by port 4
To after the modified IP packet, then can the modified IP packet be encapsulated as by VXLAN reports according to 4 corresponding VNI of port
Text.Assuming that the forwarding port-for-port 1 found, then can forward the VXLAN messages after encapsulation by port 1, it will the envelope
VXLAN messages after dress are forwarded to the corresponding VXLAN networks of the VNI.In general, in this manner, can realize
Three layers between VXLAN networks and IP network communicate.
Further, three layers of communication between different VXLAN networks can also be realized in this manner, that is, are realized
Across three layers of communication of VXLAN networks.It please refers to Fig.3, the schematic diagram for another message forwarding system.Message shown in Fig. 3
In repeater system, the network equipment 1 is the VTEP in a certain VXLAN networks, and the network equipment 3 is the VTEP in another VXLAN networks,
The network equipment 2 and the network equipment 4 are then the network equipment using technical scheme.
VM in its affiliated VXLAN network IP packets sent can be encapsulated as VXLAN messages by the network equipment 1, and will
The VXLAN messages are forwarded to the network equipment 2.
The network equipment 2 can first unseal the VXLAN messages when receiving the VXLAN messages by port 1
Dress, to obtain the original IP packet in the VXLAN messages.It, can be by the original IP packet after the original IP packet is got
Port 2 is forwarded to, and after the original IP packet is received by port 2, then it can be according to the destination IP of the original IP packet
Address search local routing table route and forwards port to obtain corresponding next-hop.Assuming that the forwarding port found is end
Mouth 3, next-hop routing are the IP address of the network equipment 4, then can be revised as by the target MAC (Media Access Control) address of the original IP packet
After the MAC Address of the network equipment 4, modified original IP packet is forwarded to by the network equipment 4 by port 3.
The network equipment 4, can be first according to the IP packet when receiving the IP packet that the network equipment 2 is sent by port 6
Purpose IP address search local routing table, route and forwarding port with obtaining corresponding next-hop.Assuming that is found is next
The IP address that routing is the network equipment 3 is jumped, then the target MAC (Media Access Control) address of the IP packet can be revised as to the MAC of the network equipment 3
Address.
Subsequently, modified IP packet can be forwarded to port 5, and the modified IP is being received by port 5
After message, then the modified IP can be reported according to 5 corresponding VNI of port (VNI of VXLAN networks belonging to the network equipment 3)
Text is encapsulated as VXLAN messages.It, then can be by port 4 by the VXLAN after encapsulation assuming that the forwarding port-for-port 4 found
Message is forwarded to the network equipment 3.
The network equipment 3 can decapsulate the VXLAN messages after the encapsulation, to obtain the reports of the VXLAN after the encapsulation
Original IP packet in text, and the original IP packet is forwarded to the VM in its affiliated VXLAN network.Net can be realized as a result,
Three layers belonging to network equipment 1 between VXLAN networks and VXLAN networks belonging to the network equipment 3 communicate.
Corresponding with the embodiment of aforementioned message forwarding method, present invention also provides the embodiments of apparatus for forwarding message.
The embodiment of the application apparatus for forwarding message can be applied on network devices.Device embodiment can pass through software
It realizes, can also be realized by way of hardware or software and hardware combining.For implemented in software, as on a logical meaning
Device, be in by the processor of equipment where it, computer program instructions corresponding in nonvolatile memory are read
Deposit what middle operation was formed.For hardware view, as shown in figure 4, one for the application apparatus for forwarding message place network equipment
Kind hardware structure diagram, other than processor shown in Fig. 4, memory, network interface and nonvolatile memory, embodiment
The actual functional capability that the network equipment where middle device is forwarded generally according to the message can also include other hardware, to this no longer
It repeats.
Fig. 5 is please referred to, is a kind of block diagram of apparatus for forwarding message shown in one exemplary embodiment of the application.The message turns
Transmitting apparatus 500 can be applied to the network equipment shown in Fig. 4, including：
Decapsulation unit 501, for when receiving VXLAN messages by the first non-loopback port, being reported to the VXLAN
Text is decapsulated, to obtain the original IP packet in the VXLAN messages；
First processing units 502, for the original IP packet to be forwarded to the first loopback port, and based on described first
Loopback port carries out three layers of forward process to the original IP packet；
First retransmission unit 503, for according to three layers of forward process as a result, original IP packet turns to treated
Hair；
Second processing unit 504, for when receiving IP packet by the second non-loopback port, to the IP packet into
Three layers of forward process of row；
Encapsulation unit 505, for IP packet to be forwarded to the second loopback port, and based on second loopback by treated
Treated that IP packet is encapsulated as VXLAN messages by described for port；
Second retransmission unit 506, for according to three layers of forward process as a result, being forwarded to the VXLAN messages after encapsulation.
In an optional embodiment, the first processing units 502 can include：
Subelement 5021 is searched, for when receiving the original IP packet by the first loopback port, according to
The purpose IP address of the original IP packet searches local routing table, and port is route and forward to obtain corresponding next-hop；
Subelement 5022 is changed, is route for the target MAC (Media Access Control) address of the original IP packet to be revised as the next-hop
MAC Address；
First retransmission unit 503 can include：
Subelement 5031 is forwarded, for forwarding modified original IP packet by the forwarding port.
In another optional embodiment, the second processing unit 504 can include：
Subelement 5041 is searched, for when receiving IP packet by the second non-loopback port, according to the IP packet
Purpose IP address search local routing table, route and forwarding port with obtaining corresponding next-hop；
Subelement 5042 is changed, for the target MAC (Media Access Control) address of the IP packet to be revised as to the MAC of the next-hop routing
Address；
Second retransmission unit 506 can include：
Subelement 5061 is forwarded, for passing through the VXLAN messages after the forwarding port forwarding encapsulation.
In another optional embodiment, the encapsulation unit 505 can include：
Subelement 5051 is encapsulated, for when receiving treated the IP packet by the second loopback port,
According to the forwarding corresponding VXLAN network identities VNI in port, treated that IP packet is encapsulated as VXLAN messages by described.
The function of each unit and the realization process of effect specifically refer to and step are corresponded in the above method in above device
Realization process, details are not described herein.
For device embodiment, since it corresponds essentially to embodiment of the method, so related part is referring to method reality
Apply the part explanation of example.The apparatus embodiments described above are merely exemplary, wherein described be used as separating component
The unit of explanation may or may not be physically separate, and the component shown as unit can be or can also
It is not physical unit, you can be located at a place or can also be distributed in multiple network element.It can be according to reality
It needs that some or all of module therein is selected to realize the purpose of application scheme.Those of ordinary skill in the art are not paying
In the case of going out creative work, you can to understand and implement.
The foregoing is merely the preferred embodiment of the application, not limiting the application, all essences in the application
God and any modification, equivalent substitution, improvement and etc. within principle, done, should be included within the scope of the application protection.
Claims (8)
1. a kind of message forwarding method, which is characterized in that the method is applied to the network equipment, including：
When receiving VXLAN messages by the first non-loopback port, the VXLAN messages are decapsulated, to obtain
State the original IP packet in VXLAN messages；
The original IP packet is forwarded to the first loopback port, and based on the first loopback port to the original IP packet
Carry out three layers of forward process；
According to three layers of forward process as a result, original IP packet is forwarded to treated；
When receiving IP packet by the second non-loopback port, three layers of forward process are carried out to the IP packet；
Will treated IP packet is forwarded to the second loopback port, and will treated the IP based on the second loopback port
Message is encapsulated as VXLAN messages；
According to three layers of forward process as a result, being forwarded to the VXLAN messages after encapsulation.
2. according to the method described in claim 1, it is characterized in that, described be based on the first loopback port to the initial IP
Message carries out three layers of forward process, including：
When receiving the original IP packet by the first loopback port, according to the destination IP of the original IP packet
Local routing table is searched in location, and port is route and forward to obtain corresponding next-hop；
The target MAC (Media Access Control) address of the original IP packet is revised as to the MAC Address of the next-hop routing；
It is described according to three layers of forward process as a result, original IP packet is forwarded to treated, including：
Modified original IP packet is forwarded by the forwarding port.
3. according to the method described in claim 1, it is characterized in that, described receiving IP packet by the second non-loopback port
When, three layers of forward process are carried out to the IP packet, including：
When receiving IP packet by the second non-loopback port, local routing is searched according to the purpose IP address of the IP packet
Table route and forwards port to obtain corresponding next-hop；
The target MAC (Media Access Control) address of the IP packet is revised as to the MAC Address of the next-hop routing；
It is described according to three layers of forward process as a result, be forwarded to the VXLAN messages after encapsulation, including：
Pass through the VXLAN messages after the forwarding port forwarding encapsulation.
4. according to the method described in claim 3, it is characterized in that, described will be after the processing based on the second loopback port
IP packet be encapsulated as VXLAN messages, including：
It is corresponding according to the forwarding port when receiving treated the IP packet by the second loopback port
VXLAN network identity VNI, treated that IP packet is encapsulated as VXLAN messages by described.
5. a kind of apparatus for forwarding message, which is characterized in that described device is applied to the network equipment, including：
Decapsulation unit, for when receiving VXLAN messages by the first non-loopback port, being carried out to the VXLAN messages
Decapsulation, to obtain the original IP packet in the VXLAN messages；
First processing units, for the original IP packet to be forwarded to the first loopback port, and based on the first loopback end
Mouth carries out three layers of forward process to the original IP packet；
First retransmission unit, for according to three layers of forward process as a result, original IP packet is forwarded to treated；
Second processing unit, for when receiving IP packet by the second non-loopback port, three layers to be carried out to the IP packet
Forward process；
Encapsulation unit, for IP packet to be forwarded to the second loopback port, and will based on the second loopback port by treated
It is described that treated that IP packet is encapsulated as VXLAN messages；
Second retransmission unit, for according to three layers of forward process as a result, being forwarded to the VXLAN messages after encapsulation.
6. device according to claim 5, which is characterized in that the first processing units include：
Subelement is searched, for when receiving the original IP packet by the first loopback port, according to described original
The purpose IP address of IP packet searches local routing table, and port is route and forward to obtain corresponding next-hop；
Subelement is changed, for the target MAC (Media Access Control) address of the original IP packet to be revised as to the MAC of the next-hop routing
Location；
First retransmission unit includes：
Subelement is forwarded, for forwarding modified original IP packet by the forwarding port.
7. device according to claim 5, which is characterized in that the second processing unit includes：
Subelement is searched, for when receiving IP packet by the second non-loopback port, according to the destination IP of the IP packet
Address search local routing table route and forwards port to obtain corresponding next-hop；
Subelement is changed, for the target MAC (Media Access Control) address of the IP packet to be revised as to the MAC Address of the next-hop routing；
Second retransmission unit includes：
Subelement is forwarded, for passing through the VXLAN messages after the forwarding port forwarding encapsulation.
8. device according to claim 7, which is characterized in that the encapsulation unit includes：
Subelement is encapsulated, for when receiving treated the IP packet by the second loopback port, according to described
The corresponding VXLAN network identities VNI in port is forwarded, treated that IP packet is encapsulated as VXLAN messages by described.
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| CN115665070A (en) * | 2022-10-17 | 2023-01-31 | 浪潮思科网络科技有限公司 | Message sending method, device, equipment and medium |
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| 高扬: "SDN架构下VXLAN技术的研究与实现", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110535747A (en) * | 2019-09-09 | 2019-12-03 | 杭州迪普信息技术有限公司 | Message processor and method |
| CN110535747B (en) * | 2019-09-09 | 2021-11-02 | 杭州迪普信息技术有限公司 | Message processing device and method |
| CN115665070A (en) * | 2022-10-17 | 2023-01-31 | 浪潮思科网络科技有限公司 | Message sending method, device, equipment and medium |
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