CN104468219B - Virtual networking method for discovering network topology and equipment - Google Patents
Virtual networking method for discovering network topology and equipment Download PDFInfo
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- CN104468219B CN104468219B CN201410763191.7A CN201410763191A CN104468219B CN 104468219 B CN104468219 B CN 104468219B CN 201410763191 A CN201410763191 A CN 201410763191A CN 104468219 B CN104468219 B CN 104468219B
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Abstract
This application provides virtual networking method for discovering network topology and equipment.In the present invention, by disposing a Topology Management module on the physical equipment there are virtual networking, topological connection relation data in the virtual networking are obtained by the Topology Management module, and topological connection relation data carrying is passed into the external physical network equipment connecting with this equipment in LLDP message, in this way, the topological connection relation of virtual networking can be passed to the equipment in physical network, realize the Topology Discovery of virtual networking.
Description
Technical field
This application involves network communication technologies, in particular to virtual networking method for discovering network topology and equipment.
Background technique
So-called virtual networking refers to inside a physical equipment, by virtualization technology fictionalize virtual machine (VM:
Virtual Machine), equipment, the equipment that these are fictionalized such as virtual switch (Vswitch) is attached to form one
Virtual local area network, is denoted as virtual networking, and Fig. 1 shows the schematic diagram of virtual networking on physical equipment.
Virtual networking is " virtual ", also, in virtual networking, and between VM and VM connect with physical equipment
It is not directly connected between the external physical network equipment, this leads to the Topology Discovery Protocol being applied in physical network such as
Link layer Neighbor Discovery Protocol (LLDP), simple gateway monitoring protocol (SNMP) cannot all use completely.
Therefore, the network topology for how finding virtual networking, is a technical problem to be solved urgently.
Summary of the invention
This application provides virtual networking method for discovering network topology and equipment, to find the network topology of virtual networking.
The technical scheme provided by the application includes:
A kind of virtual networking method for discovering network topology, this method is applied to there are the physical equipment of virtual networking, described
Physical equipment has the Topology Management module for managing the virtual networking, this method comprises:
The Topology Management module obtains topological connection relation data in the virtual networking；
The topological connection relation data are carried and are reported in link layer Neighbor Discovery Protocol LLDP by the Topology Management module
The external physical network equipment connecting with this equipment is passed in text.
A kind of virtual networking method for discovering network topology, this method are applied to connect with the physical equipment there are virtual networking
Physical network device, this method comprises:
Receive and store the LLDP message that the physical equipment is sent；
When this equipment supports simple gateway management agreement SNMP, by the relevant physical topology connection relationship data of this equipment
And topological connection relation data organization is sent to together for managing in the virtual networking of the LLDP message carrying obtained
Manage the controller of network topology；
When this equipment does not support SNMP, show that topology is even in the virtual networking of the LLDP carrying by LLDP order line
Connect relation data.
A kind of virtual networking discovering network topology equipment, in there are the physical equipments of virtual networking, this sets the equipment application
It is standby to include:
Topology Management module, for managing the topology of the virtual networking comprising with lower unit:
Acquiring unit, for obtaining topological connection relation data in the virtual networking；
Packet sending unit, the topological connection relation data for obtaining the acquiring unit are carried in link layer neighbours
It was found that passing to the external physical network equipment connecting with this equipment in agreement LLDP message.
A kind of virtual networking discovering network topology equipment, the equipment application are connect in the physical equipment there are virtual networking
Physical network device, which includes:
Receiving unit, the LLDP message sent for receiving and storing the physical equipment；
Transmission unit, for when this equipment supports simple gateway management agreement SNMP, the relevant physics of this equipment to be opened up
Topological connection relation data organization is flutterred in the virtual networking that the LLDP message of connection relationship data and acquisition carries one
Act the controller being sent to for managing network topology；And
When this equipment does not support SNMP, show that topology is even in the virtual networking of the LLDP carrying by LLDP order line
Connect relation data.
As can be seen from the above technical solutions, in the present invention, by disposing one on the physical equipment there are virtual networking
A Topology Management module obtains topological connection relation data in the virtual networking by the Topology Management module, and will be described
The carrying of topological connection relation data passes to the external physical network equipment connecting with this equipment in LLDP message, in this way, energy
It is enough that the topological connection relation of virtual networking is passed into the equipment in physical network, realize the Topology Discovery of virtual networking；
Further, in the present invention, the Topology connection in virtual networking is closed by network layer protocol, that is, LLDP of standard
Coefficient does not depend on special webmastering software according to the external physical network equipment is passed to, more economical, simple, practical.
Detailed description of the invention
Fig. 1 is the schematic diagram of virtual networking on physics machine tool；
Fig. 2 is method flow diagram provided by the invention；
Fig. 3 a, Fig. 3 b are virtual networking schematic diagram provided in an embodiment of the present invention；
Fig. 4 is LLDP message format schematic diagram provided in an embodiment of the present invention；
Fig. 5 is equipment structure chart provided by the invention；
Fig. 6 is another equipment structure chart provided by the invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, right in the following with reference to the drawings and specific embodiments
The present invention is described in detail.
Virtual networking method for discovering network topology provided by the present application is realized based on network protocol layer, particular by
Topological connection relation data in virtual networking are passed to the external physical network equipment by network protocol layer, by external physical net
Network equipment shows the topological connection relation in virtual networking, or with by the external physical network equipment by the topology in virtual networking
Connection relationship data are transmitted to the controller for managing entire virtual networking and physical network, realize physical network and virtual networking
Discovering network topology.
Virtual networking method for discovering network topology provided by the present application is described below:
Referring to fig. 2, Fig. 2 is method flow diagram provided by the invention.The process is applied to the equipment such as physical equipment such as PC.
In the present invention, which is mounted with virtual software, and VM, void can be fictionalized on the physical equipment by the virtual software
The equipment such as quasi- interchanger, also, these equipment fictionalized form virtual networking by connection.
Connect in order to which the topological connection relation data on physical equipment in virtual networking are passed to external and this physical equipment
(physical network device is used to show and/or report the Topology connection of virtual networking on physical equipment to the physical network device connect
Relation data), in the present invention, one is disposed on the physical devices for managing the Topology Management module of the virtual networking, tool
Body, which is increased logic module in virtual software.
Based on the Topology Management module disposed on physical equipment, then as shown in Fig. 2, this method may include following step
It is rapid:
Step 201, the Topology Management module obtains topological connection relation data in the virtual networking.
As an embodiment of the present invention, topological connection relation data include at least following number in the virtual networking
According to:
For connected on the mark of VM of the virtual machine VM configuration in the virtual networking, VM virtual switch port,
With the mark of the VM virtual switch connecting and for the institute of virtual switch configuration in the virtual networking
State the physical network card that VLAN belonging to the port of the VM, virtual switch binding are connected on virtual switch.
It should be noted that the above-mentioned restriction to topological connection relation data is a kind of citing, and non-limiting range,
It can need to set according to real network, such as setting topological connection relation data are as follows:
For connected on the mark of VM of the virtual machine VM configuration in the virtual networking, VM virtual switch port,
The MAC Address of the port, in the virtual networking with the mark of the VM virtual switch connecting and be directed to the void
VLAN belonging to the port of the VM is connected on the virtual switch of quasi- interchanger configuration, the virtual switch is bound
Physical network card, MAC Address of the physical network card etc..
As an example, here for ease of description, by the mark of VM, the port of VM connection virtual switch, virtual friendship
The mark changed planes, the physical network card of virtual switch binding, to connect VLAN belonging to the port of the VM on virtual switch logical
Claim five-tuple data, is described below with topological connection relation data in virtual networking comprising the five-tuple data instance.
Step 202, topological connection relation data in the virtual networking are carried and are reported in LLDP by the Topology Management module
The external physical network equipment connecting with this equipment is passed in text.
Physical equipment first establishes LLDP with the external physical network equipment according to the physical network card in this equipment in the initial stage
Neighborhood is based on this, and in this step 202, Topology Management module carries topological connection relation data in the virtual networking
It is sent in LLDP message by each physical network card on physical equipment, establishes LLDP neighbours pass with this equipment to pass to
The external physical network equipment of system.As shown in Figure 3a, there are eth0 to eth1, totally three physical network cards, eth0 connect on physical equipment
The external physical network equipment connect is physical network device A, and the external physical network equipment of eth1 connection is physical network device
The external physical network equipment of B, eth2 connection is physical network device C, and initial, physical equipment passes through eth0 to eth1 tri-
Physical network card establishes LLDP neighborhood with physical network device A to C respectively, then when going to step 202, on physical equipment
Topology Management module by the virtual networking that step 201 obtains topological connection relation Deta bearer pass through in LLDP message
Tri- physical network cards of eth0 to eth1 send LLDP message respectively, in this way, external physical network equipment A to C just will receive LLDP,
Realize the purpose for topological connection relation data in virtual networking being dealt into the external physical network equipment.
As an embodiment of the present invention, in step 202, Topology Management module closes Topology connection in virtual networking
Coefficient passes to the external physical network equipment connecting with this equipment according to carrying concretely in LLDP message:
Step 1, topological connection relation data in the virtual networking are carried and are passed in LLDP message by Topology Management module
Pass the LLDP process in this equipment；
In the present invention, the LLDP process on physical equipment operates in the operating system of physical equipment, and Topology Management module is
LLDP message is passed to LLDP process by interface.
Step 2, LLDP process sends LLDP message by each physical network card on physical equipment and extremely builds with physical equipment
The external physical network equipment of LLDP neighborhood is found.
In the present invention, if multiple physical network cards of a virtual switch while binding physical equipment, such as Fig. 3 a institute
The virtual switch vswitch1 that shows while tri- physical network cards of eth0 to eth2 are bundled with, then in step 202, by virtual group
The carrying of topological connection relation data needs to distinguish different physical network cards in LLDP message in net, even with topology in virtual networking
Connecing relation data is five-tuple data instance, then different physical network cards can be distinguished by following format:
The physical network card of virtual switch binding, the mark of virtual switch, the end that the VM is connected on virtual switch
The port of virtual switch is connected in the mark of VM of VLAN, virtual switch connection belonging to mouthful, VM.
By taking Fig. 3 a as an example, virtual switch vswitch1 binds tri- physical network cards of eth0 to eth2, wherein vswitch1
Connect the port G1 of VM1, and it is VLAN11 that VLAN belonging to the port of VM1 is connected on vswitch1, then it will according to above-mentioned format
Three five-tuple data are carried in LLDP message to distinguish different physical network cards below:
eth0,vswitch1,VLAN11,VM1,G1；
eth1,vswitch1,VLAN11,VM1,G1；
eth2、vswitch1、VLAN11、VM1、G1。
And when a physical network card binds multiple virtual switches simultaneously, as shown in Figure 3b, physical network card eth1 is simultaneously
Two virtual switches of vswitch1, vswitch2 are bound, then in this step 202, by topological connection relation in virtual networking
Data carrying needs to distinguish different virtual switches in LLDP message, with topological connection relation data in virtual networking for five
For tuple data, then Topology Management module can distinguish different virtual switches by following format:
The mark of virtual switch, the physical network card of virtual switch binding, the end that the VM is connected on virtual switch
The port of virtual switch is connected in the mark of VM of VLAN, virtual switch connection belonging to mouthful, VM.
By taking Fig. 3 b as an example, in the virtual networking that physical equipment fictionalizes, virtual switch vswitch1, vswitch2 are same
When bind a physical network card eth1, wherein the port G1 on vswitch1 connection VM1, and on vswitch1 connection VM1 end
VLAN belonging to mouthful is VLAN11, the port G2 on vswitch2 connection VM2, and is connected belonging to the port of VM2 on vswitch2
VLAN be VLAN12, then according to above-mentioned format by following two five-tuple data carry in LLDP message to distinguish different void
Quasi- interchanger vswitch1 and vswitch2:
vswitch1,eth1,VLAN11,VM1,G1；
vswitch2、eth1、VLAN12、VM2、G2。
So far, 202 description is completed.It should be noted that in the present invention, for the ease of executing step 202 it may require that object
It manages equipment and supports LLDP.Certainly, it if physical equipment does not support LLDP, can be provided by the virtual software installed on physical equipment
The function of LLDP.
As an embodiment of the present invention, specifically, above topology management module connects topology in the virtual networking
Connect relation data carry LLDP message can are as follows:
Topological connection relation data organization in the virtual networking is encapsulated in link layer discovery data protocol data at TLV
Unit (LLDPDU).Dotted line shows the TLV being organized into Fig. 4.It should be noted that in the present invention, with described virtual
Topological connection relation data are five-tuple data instance in networking, then these five-tuple data can occupy a TLV respectively, can also
A TLV is occupied jointly, and the present invention does not limit specifically.
It, can be with the management information bank of standard when the external physical network equipment receives LLDP message in the present invention
The format of (MIB:Mangenment Information Base) saves Topology connection in the virtual networking of LLDP message carrying
Relation data.Namely at this point, the external physical network equipment such as interchanger obtains on the physical equipment such as PC of its connection
The topological connection relation of virtual networking.
When the external physical network equipment obtains topological connection relation data in the virtual networking that LLDP message carries, if
The external physical network equipment supports SNMP, then the external physical network equipment will be by the relevant physical topology connection relationship of this equipment
The organization of unity of topological connection relation data is sent out in LLDP message in the virtual networking that data and the LLDP message of acquisition carry
The controller for managing network topology is given, by taking SDN network as an example, then controller is just SDN controller.When controller receives
To the external physical network equipment send LLDP message when, will obtain the LLDP message carrying virtual networking in topology even
Relation data and physical topology connection relationship data are connect, and can describe and depict the whole network of physical network and virtual network
Topology.
And if the external physical network equipment does not support SNMP, it can be checked by modifying or extending the order line of LLDP
Topological connection relation data in the virtual networking that the external physical network equipment obtains, and generate Topology connection in corresponding virtual networking
The neighbor entry of relation data inquires network topology for the controller for managing network topology.Here, external object is checked
When managing topological connection relation data in the virtual networking that the network equipment obtains, it is contemplated that the means flexibly spliced, than avoiding equipment
Limitation to display field quantity.
As an embodiment of the present invention, it in the present invention, is sent when the external physical network equipment receives physical equipment
LLDP message when, can by receive LLDP message port return a LLDP message to physical equipment, it is here, described
The LLDP message that physical network device returns at least carries the mark of the physical network device, the port, default VLAN；
Topology Management module on physical equipment receives the LLDP message returned from physical network device in physical equipment
When, the topology in this equipment between virtual networking and the external physical network equipment is described based on the received LLDP message.
Method provided by the invention is described above.Equipment provided by the invention is described below:
Referring to Fig. 5, Fig. 5 is equipment structure chart provided by the invention.The equipment application is set in the physics there are virtual networking
It is standby, as shown in figure 5, the equipment includes:
Topology Management module, for managing the topology of the virtual networking comprising with lower unit:
Acquiring unit, for obtaining topological connection relation data in the virtual networking；
Packet sending unit, the topological connection relation data for obtaining the acquiring unit are carried in link layer neighbours
It was found that passing to the external physical network equipment connecting with this equipment in agreement LLDP message.
Preferably, the topological connection relation data include at least:
For connected on the mark of VM of the virtual machine VM configuration in the virtual networking, VM virtual switch port,
With the mark of the VM virtual switch connecting and for the institute of virtual switch configuration in the virtual networking
State the physical network card that VLAN belonging to the port of the VM, virtual switch binding are connected on virtual switch.
Preferably, topological connection relation data are carried and are passed to and this object in LLDP message by the packet sending unit
Managing the physical network device that equipment connects includes:
The topological connection relation data are carried in LLDP message and pass to the LLDP process in this equipment；
By LLDP process by being sent to the LLDP message and this by each physical network card on this physical equipment
Equipment establishes the external physical network equipment of LLDP neighborhood.
Preferably, the Topology Management module further comprises:
Message receiving unit is sent for receiving the external physical network equipment for establishing LLDP neighborhood with this equipment
LLDP message, the LLDP message that the external physical network equipment is sent at least carries mark, the outside of the external physical network equipment
Physical network device sends the port of LLDP message, default VLAN；
Collector unit, for based on virtual networking and outside described in the received LLDP Receive message of the message receiving unit
Topology between physical network device.
So far, equipment structure chart shown in fig. 5 is completed.
Referring to Fig. 6, Fig. 6 is another equipment structure chart provided by the invention.The equipment application in there are virtual networkings
The physical network device of physical equipment connection, as shown in fig. 6, the equipment can include:
Receiving unit, the LLDP message sent for receiving and storing the physical equipment；
Transmission unit, for when this equipment supports simple gateway management agreement SNMP, the relevant physics of this equipment to be opened up
Topological connection relation data organization is flutterred in the virtual networking that the LLDP message of connection relationship data and acquisition carries one
Act the controller being sent to for managing network topology；And
When this equipment does not support SNMP, show that topology is even in the virtual networking of the LLDP carrying by LLDP order line
Connect relation data.
So far, equipment structure chart shown in fig. 6 is completed.
As can be seen from the above technical solutions, in the present invention, by increasing by one on the physical equipment there are virtual networking
A Topology Management module obtains topological connection relation data in the virtual networking by the Topology Management module, and will be described
Topological connection relation data are carried in LLDP message and are passed to by the LLDP process in this equipment and connect with this equipment
The external physical network equipment is realized in such manner, it is possible to which the topological connection relation of virtual networking is passed to the equipment in physical network
The Topology Discovery of virtual networking；
Further, in the present invention, the Topology connection in virtual networking is closed by network layer protocol, that is, LLDP of standard
Coefficient does not depend on special webmastering software according to the external physical network equipment is passed to, more economical, simple, practical.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (6)
1. a kind of virtual networking method for discovering network topology, which is characterized in that this method is applied to there are the physics of virtual networking
Equipment, the physical equipment have the Topology Management module for managing the virtual networking, this method comprises:
The Topology Management module obtains topological connection relation data in the virtual networking；
The Topology Management module carries the topological connection relation data in link layer Neighbor Discovery Protocol LLDP message
Pass to the external physical network equipment connecting with this equipment；
The carrying of topological connection relation data is passed to the object connecting with this physical equipment by Topology Management module in LLDP message
Reason the network equipment include: by the topological connection relation data carry in LLDP message and pass to the LLDP in this equipment into
Journey；The LLDP message is sent to by each physical network card on this physical equipment by LLDP process and is established with this equipment
The external physical network equipment of LLDP neighborhood.
2. the method according to claim 1, wherein the topological connection relation data include at least:
For connect the port of virtual switch on the mark of VM of the virtual machine VM configuration in the virtual networking, VM, in institute
It states in virtual networking with the mark of the VM virtual switch connecting and for the void of virtual switch configuration
The physical network card of VLAN belonging to the port of the VM, virtual switch binding are connected on quasi- interchanger.
3. method according to claim 1 or 2, which is characterized in that this method further comprises:
The Topology Management module receives what the external physical network equipment for establishing LLDP neighborhood with this equipment was sent
LLDP message, the LLDP message that the external physical network equipment is sent at least carry the mark of the external physical network equipment, external object
It manages the network equipment and sends the port of LLDP message, default VLAN；
The Topology Management module is based on virtual networking and the external physical network equipment described in the received LLDP Receive message
Between topology.
4. a kind of virtual networking discovering network topology equipment, which is characterized in that the equipment application is in there are the physics of virtual networking
Equipment, the equipment include:
Topology Management module, for managing the topology of the virtual networking comprising with lower unit:
Acquiring unit, for obtaining topological connection relation data in the virtual networking；
Packet sending unit, the topological connection relation data for obtaining the acquiring unit are carried to be found in link layer neighbours
The external physical network equipment connecting with this equipment is passed in agreement LLDP message；
The carrying of topological connection relation data is passed in LLDP message and is connect with this physical equipment by the packet sending unit
Physical network device include: to carry the topological connection relation data in LLDP message and to pass in this equipment
LLDP process；The LLDP message is sent to and this equipment by each physical network card on this physical equipment by LLDP process
Establish the external physical network equipment of LLDP neighborhood.
5. equipment according to claim 4, which is characterized in that the topological connection relation data include at least:
For connect the port of virtual switch on the mark of VM of the virtual machine VM configuration in the virtual networking, VM, in institute
It states in virtual networking with the mark of the VM virtual switch connecting and for the void of virtual switch configuration
The physical network card of VLAN belonging to the port of the VM, virtual switch binding are connected on quasi- interchanger.
6. equipment according to claim 4 or 5, which is characterized in that the Topology Management module further comprises:
Message receiving unit, for receive with this equipment establish LLDP neighborhood the external physical network equipment send
LLDP message, the LLDP message that the external physical network equipment is sent at least carry the mark of the external physical network equipment, external object
It manages the network equipment and sends the port of LLDP message, default VLAN；
Collector unit, for based on virtual networking and external physical described in the received LLDP Receive message of the message receiving unit
Topology between the network equipment.
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